New upstream version 1.19.90 upstream/1.19.90

1 files changed, 2247 insertions, 0 deletions

diff --git a/src/tests/test-core.c b/src/tests/test-core.c
new file mode 100644
index 00000000..3eaad104
--- /dev/null
+++ b/src/tests/test-core.c
@@ -0,0 +1,2247 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Copyright (C) 2014 Red Hat, Inc.
+ *
+ */
+
+#include "nm-default.h"
+
+#include <net/if.h>
+#include <byteswap.h>
+
+/* need math.h for isinf() and INFINITY. No need to link with -lm */
+#include <math.h>
+
+#include "NetworkManagerUtils.h"
+#include "nm-core-internal.h"
+#include "nm-core-utils.h"
+#include "systemd/nm-sd-utils-core.h"
+
+#include "dns/nm-dns-manager.h"
+#include "nm-connectivity.h"
+
+#include "nm-test-utils-core.h"
+
+/* Reference implementation for nm_utils_ip6_address_clear_host_address.
+ * Taken originally from set_address_masked(), src/ndisc/nm-lndp-ndisc.c
+ **/
+static void
+ip6_address_clear_host_address_reference (struct in6_addr *dst, struct in6_addr *src, guint8 plen)
+{
+	guint nbytes = plen / 8;
+	guint nbits = plen % 8;
+
+	g_return_if_fail (plen <= 128);
+	g_assert (src);
+	g_assert (dst);
+
+	if (plen >= 128)
+		*dst = *src;
+	else {
+		memset (dst, 0, sizeof (*dst));
+		memcpy (dst, src, nbytes);
+		dst->s6_addr[nbytes] = (src->s6_addr[nbytes] & (0xFF << (8 - nbits)));
+	}
+}
+
+static void
+_randomize_in6_addr (struct in6_addr *addr, GRand *r)
+{
+	int i;
+
+	for (i=0; i < 4; i++)
+		((guint32 *)addr)[i] = g_rand_int (r);
+}
+
+static void
+test_nm_utils_ip6_address_clear_host_address (void)
+{
+	GRand *r = g_rand_new ();
+	int plen, i;
+
+	g_rand_set_seed (r, 0);
+
+	for (plen = 0; plen <= 128; plen++) {
+		for (i =0; i<50; i++) {
+			struct in6_addr addr_src, addr_ref;
+			struct in6_addr addr1, addr2;
+
+			_randomize_in6_addr (&addr_src, r);
+			_randomize_in6_addr (&addr_ref, r);
+			_randomize_in6_addr (&addr1, r);
+			_randomize_in6_addr (&addr2, r);
+
+			addr1 = addr_src;
+			ip6_address_clear_host_address_reference (&addr_ref, &addr1, plen);
+
+			_randomize_in6_addr (&addr1, r);
+			_randomize_in6_addr (&addr2, r);
+			addr1 = addr_src;
+			nm_utils_ip6_address_clear_host_address (&addr2, &addr1, plen);
+			g_assert_cmpint (memcmp (&addr1, &addr_src, sizeof (struct in6_addr)), ==, 0);
+			g_assert_cmpint (memcmp (&addr2, &addr_ref, sizeof (struct in6_addr)), ==, 0);
+
+			/* test for self assignment/inplace update. */
+			_randomize_in6_addr (&addr1, r);
+			addr1 = addr_src;
+			nm_utils_ip6_address_clear_host_address (&addr1, &addr1, plen);
+			g_assert_cmpint (memcmp (&addr1, &addr_ref, sizeof (struct in6_addr)), ==, 0);
+		}
+	}
+
+	g_rand_free (r);
+}
+
+/*****************************************************************************/
+
+static void
+test_logging_domains (void)
+{
+	const char *s;
+
+	s = nm_logging_all_domains_to_string ();
+	g_assert (s && s[0]);
+}
+
+/*****************************************************************************/
+
+static void
+_test_same_prefix (const char *a1, const char *a2, guint8 plen)
+{
+	struct in6_addr a = *nmtst_inet6_from_string (a1);
+	struct in6_addr b = *nmtst_inet6_from_string (a2);
+
+	g_assert (nm_utils_ip6_address_same_prefix (&a, &b, plen));
+}
+
+static void
+test_nm_utils_ip6_address_same_prefix (void)
+{
+	guint n, i;
+	const guint N = 100;
+	union {
+		guint8 ptr[sizeof (struct in6_addr)];
+		struct in6_addr val;
+	} a, b, addrmask, addrmask_bit;
+	guint8 plen;
+
+	/* test#1 */
+	for (n = 0; n < N; n++) {
+		gboolean is_same = n < N / 2;
+		gboolean result;
+
+		nmtst_rand_buf (NULL, a.ptr, sizeof (a));
+		nmtst_rand_buf (NULL, b.ptr, sizeof (b));
+again_plen:
+		plen = nmtst_get_rand_uint32 () % 129;
+		if (!is_same && NM_IN_SET (plen, 0, 128))
+			goto again_plen;
+
+		if (plen < 128) {
+			for (i = 0; (i + 1) * 8 <= plen; i++)
+				b.ptr[i] = a.ptr[i];
+			if (plen % 8) {
+				guint8 mask;
+
+				g_assert (i < sizeof (a));
+				mask = ~((1 << (8 - (plen % 8))) - 1);
+				b.ptr[i] = (a.ptr[i] & mask) | (b.ptr[i] & ~mask);
+				if (!is_same) {
+					mask = (1 << (8 - (plen % 8)));
+					b.ptr[i] = (b.ptr[i] & ~mask) | ~(b.ptr[i] & mask);
+				}
+			} else if (!is_same) {
+				g_assert (i > 0);
+
+				b.ptr[i - 1] = (b.ptr[i - 1] & ~0x1) | ~(b.ptr[i - 1] & 0x1);
+			}
+		} else
+			b = a;
+
+		result = nm_utils_ip6_address_same_prefix (&a.val, &b.val, plen);
+		g_assert (result == is_same);
+		g_assert (NM_IN_SET (result, TRUE, FALSE));
+	}
+
+	/* test#2 */
+	for (n = 0; n < N; n++) {
+		nmtst_rand_buf (NULL, a.ptr, sizeof (a));
+		nmtst_rand_buf (NULL, b.ptr, sizeof (b));
+		plen = nmtst_get_rand_uint32 () % 129;
+
+		memset (addrmask.ptr, 0xFF, sizeof (addrmask));
+		nm_utils_ip6_address_clear_host_address (&addrmask.val, &addrmask.val, plen);
+
+		for (i = 0; i < sizeof (a); i++)
+			b.ptr[i] = (a.ptr[i] & addrmask.ptr[i]) | (b.ptr[i] & ~addrmask.ptr[i]);
+
+		g_assert (nm_utils_ip6_address_same_prefix (&a.val, &b.val, plen) == TRUE);
+	}
+
+	/* test#3 */
+	for (n = 0; n < N; n++) {
+		gboolean reached = FALSE;
+
+		nmtst_rand_buf (NULL, a.ptr, sizeof (a));
+		nmtst_rand_buf (NULL, b.ptr, sizeof (b));
+		plen = nmtst_get_rand_uint32 () % 129;
+
+		if (!plen)
+			continue;
+
+		memset (addrmask.ptr, 0xFF, sizeof (addrmask));
+		nm_utils_ip6_address_clear_host_address (&addrmask.val, &addrmask.val, plen);
+
+		memset (addrmask_bit.ptr, 0xFF, sizeof (addrmask_bit));
+		nm_utils_ip6_address_clear_host_address (&addrmask_bit.val, &addrmask_bit.val, plen - 1);
+
+		for (i = 0; i < sizeof (a); i++)
+			b.ptr[i] = (a.ptr[i] & addrmask.ptr[i]) | (b.ptr[i] & ~addrmask.ptr[i]);
+
+		/* flip the last bit. */
+		for (i = 0; i < sizeof (a); i++) {
+			guint8 mask = addrmask.ptr[i] ^ addrmask_bit.ptr[i];
+			if (mask) {
+				g_assert (!reached);
+				g_assert (nm_utils_is_power_of_two (mask));
+				reached = TRUE;
+				b.ptr[i] = (b.ptr[i] & ~mask) | ~(b.ptr[i] & mask);
+			}
+		}
+		g_assert (reached);
+
+		g_assert (nm_utils_ip6_address_same_prefix (&a.val, &b.val, plen) == FALSE);
+	}
+
+	/* test#4 */
+	_test_same_prefix ("::", "::1", 10);
+	_test_same_prefix ("abcd::", "abcd::1", 10);
+}
+
+/*****************************************************************************/
+
+static void
+test_nm_utils_log_connection_diff (void)
+{
+	NMConnection *connection;
+	NMConnection *connection2;
+
+	/* if logging is disabled (the default), nm_utils_log_connection_diff() returns
+	 * early without doing anything. Hence, in the normal testing, this test does nothing.
+	 * It only gets interesting, when run verbosely with NMTST_DEBUG=debug ... */
+
+	nm_log (LOGL_DEBUG, LOGD_CORE, NULL, NULL, "START TEST test_nm_utils_log_connection_diff...");
+
+	connection = nm_simple_connection_new ();
+	nm_connection_add_setting (connection, nm_setting_connection_new ());
+	nm_utils_log_connection_diff (connection, NULL, LOGL_DEBUG, LOGD_CORE, "test1", ">>> ", NULL);
+
+	nm_connection_add_setting (connection, nm_setting_wired_new ());
+	nm_utils_log_connection_diff (connection, NULL, LOGL_DEBUG, LOGD_CORE, "test2", ">>> ", NULL);
+
+	connection2 = nm_simple_connection_new_clone (connection);
+	nm_utils_log_connection_diff (connection, connection2, LOGL_DEBUG, LOGD_CORE, "test3", ">>> ", NULL);
+
+	g_object_set (nm_connection_get_setting_connection (connection),
+	              NM_SETTING_CONNECTION_ID, "id",
+	              NM_SETTING_CONNECTION_UUID, "uuid",
+	              NULL);
+	g_object_set (nm_connection_get_setting_connection (connection2),
+	              NM_SETTING_CONNECTION_ID, "id2",
+	              NM_SETTING_CONNECTION_MASTER, "master2",
+	              NULL);
+	nm_utils_log_connection_diff (connection, connection2, LOGL_DEBUG, LOGD_CORE, "test4", ">>> ", NULL);
+
+	nm_connection_add_setting (connection, nm_setting_802_1x_new ());
+	nm_utils_log_connection_diff (connection, connection2, LOGL_DEBUG, LOGD_CORE, "test5", ">>> ", NULL);
+
+	g_object_set (nm_connection_get_setting_802_1x (connection),
+	              NM_SETTING_802_1X_PASSWORD, "id2",
+	              NM_SETTING_802_1X_PASSWORD_FLAGS, NM_SETTING_SECRET_FLAG_NOT_SAVED,
+	              NULL);
+	nm_utils_log_connection_diff (connection, NULL, LOGL_DEBUG, LOGD_CORE, "test6", ">>> ", NULL);
+	nm_utils_log_connection_diff (connection, connection2, LOGL_DEBUG, LOGD_CORE, "test7", ">>> ", NULL);
+	nm_utils_log_connection_diff (connection2, connection, LOGL_DEBUG, LOGD_CORE, "test8", ">>> ", NULL);
+
+	g_clear_object (&connection);
+	g_clear_object (&connection2);
+
+	connection = nmtst_create_minimal_connection ("id-vpn-1", NULL, NM_SETTING_VPN_SETTING_NAME, NULL);
+	nm_utils_log_connection_diff (connection, NULL, LOGL_DEBUG, LOGD_CORE, "test-vpn-1", ">>> ", NULL);
+
+	g_clear_object (&connection);
+}
+
+/*****************************************************************************/
+
+static void
+do_test_sysctl_ip_conf (int addr_family,
+                        const char *iface,
+                        const char *property)
+{
+	char path[NM_UTILS_SYSCTL_IP_CONF_PATH_BUFSIZE];
+	const char *pp;
+
+	pp = nm_utils_sysctl_ip_conf_path (addr_family, path, iface, property);
+	g_assert (pp == path);
+	g_assert (path[0] == '/');
+
+	g_assert (nm_utils_sysctl_ip_conf_is_path (addr_family, path, iface, property));
+	g_assert (nm_utils_sysctl_ip_conf_is_path (addr_family, path, NULL, property));
+}
+
+static void
+test_nm_utils_sysctl_ip_conf_path (void)
+{
+	do_test_sysctl_ip_conf (AF_INET6, "a", "mtu");
+	do_test_sysctl_ip_conf (AF_INET6, "eth0", "mtu");
+	do_test_sysctl_ip_conf (AF_INET6, "e23456789012345", "mtu");
+}
+
+/*****************************************************************************/
+
+static NMConnection *
+_match_connection_new (void)
+{
+	NMConnection *connection;
+	NMSettingConnection *s_con;
+	NMSettingWired *s_wired;
+	NMSettingIPConfig *s_ip4, *s_ip6;
+	char *uuid;
+
+	connection = nm_simple_connection_new ();
+
+	s_con = (NMSettingConnection *) nm_setting_connection_new ();
+	nm_connection_add_setting (connection, (NMSetting *) s_con);
+	uuid = nm_utils_uuid_generate ();
+	g_object_set (G_OBJECT (s_con),
+	              NM_SETTING_CONNECTION_ID, "blahblah",
+	              NM_SETTING_CONNECTION_UUID, uuid,
+	              NM_SETTING_CONNECTION_TYPE, NM_SETTING_WIRED_SETTING_NAME,
+	              NM_SETTING_CONNECTION_AUTOCONNECT, FALSE,
+	              NULL);
+	g_free (uuid);
+
+	s_wired = (NMSettingWired *) nm_setting_wired_new ();
+	nm_connection_add_setting (connection, (NMSetting *) s_wired);
+
+	s_ip4 = (NMSettingIPConfig *) nm_setting_ip4_config_new ();
+	nm_connection_add_setting (connection, (NMSetting *) s_ip4);
+	g_object_set (G_OBJECT (s_ip4),
+	              NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP4_CONFIG_METHOD_AUTO,
+	              NULL);
+
+	s_ip6 = (NMSettingIPConfig *) nm_setting_ip6_config_new ();
+	nm_connection_add_setting (connection, (NMSetting *) s_ip6);
+	g_object_set (G_OBJECT (s_ip6),
+	              NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP6_CONFIG_METHOD_AUTO,
+	              NULL);
+
+	return connection;
+}
+
+static NMConnection *
+_match_connection (GSList *connections,
+                   NMConnection *original,
+                   gboolean device_has_carrier,
+                   gint64 default_v4_metric,
+                   gint64 default_v6_metric)
+{
+	gs_free NMConnection **list = NULL;
+	guint i, len;
+
+	len = g_slist_length (connections);
+	g_assert (len < 10);
+
+	list = g_malloc ((len + 1) * sizeof (NMConnection *));
+	for (i = 0; i < len; i++, connections = connections->next) {
+		g_assert (connections);
+		g_assert (connections->data);
+		list[i] = connections->data;
+	}
+	list[i] = NULL;
+
+	return nm_utils_match_connection (list, original, FALSE, device_has_carrier, default_v4_metric, default_v6_metric, NULL, NULL);
+}
+
+static void
+test_connection_match_basic (void)
+{
+	NMConnection *orig, *copy, *matched;
+	GSList *connections = NULL;
+	NMSettingIPConfig *s_ip4;
+
+	orig = _match_connection_new ();
+	copy = nm_simple_connection_new_clone (orig);
+	connections = g_slist_append (connections, copy);
+
+	matched = _match_connection (connections, orig, TRUE, 0, 0);
+	g_assert (matched == copy);
+
+	/* Now change a material property like IPv4 method and ensure matching fails */
+	s_ip4 = nm_connection_get_setting_ip4_config (orig);
+	g_assert (s_ip4);
+	g_object_set (G_OBJECT (s_ip4),
+	              NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP4_CONFIG_METHOD_LINK_LOCAL,
+	              NULL);
+	matched = _match_connection (connections, orig, TRUE, 0, 0);
+	g_assert (matched == NULL);
+
+	g_slist_free (connections);
+	g_object_unref (orig);
+	g_object_unref (copy);
+}
+
+static void
+test_connection_match_ip6_method (void)
+{
+	NMConnection *orig, *copy, *matched;
+	GSList *connections = NULL;
+	NMSettingIPConfig *s_ip6;
+
+	orig = _match_connection_new ();
+	copy = nm_simple_connection_new_clone (orig);
+	connections = g_slist_append (connections, copy);
+
+	/* Check that if the generated connection is IPv6 method=link-local, and the
+	 * candidate is both method=auto and may-faily=true, that the candidate is
+	 * matched.
+	 */
+	s_ip6 = nm_connection_get_setting_ip6_config (orig);
+	g_assert (s_ip6);
+	g_object_set (G_OBJECT (s_ip6),
+	              NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP6_CONFIG_METHOD_LINK_LOCAL,
+	              NULL);
+
+	s_ip6 = nm_connection_get_setting_ip6_config (copy);
+	g_assert (s_ip6);
+	g_object_set (G_OBJECT (s_ip6),
+	              NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP6_CONFIG_METHOD_AUTO,
+	              NM_SETTING_IP_CONFIG_MAY_FAIL, TRUE,
+	              NULL);
+
+	matched = _match_connection (connections, orig, TRUE, 0, 0);
+	g_assert (matched == copy);
+
+	g_slist_free (connections);
+	g_object_unref (orig);
+	g_object_unref (copy);
+}
+
+static void
+test_connection_match_ip6_method_ignore (void)
+{
+	NMConnection *orig, *copy, *matched;
+	GSList *connections = NULL;
+	NMSettingIPConfig *s_ip6;
+
+	orig = _match_connection_new ();
+	copy = nm_simple_connection_new_clone (orig);
+	connections = g_slist_append (connections, copy);
+
+	/* Check that if the generated connection is IPv6 method=link-local, and the
+	 * candidate is method=ignore, that the candidate is matched.
+	 */
+	s_ip6 = nm_connection_get_setting_ip6_config (orig);
+	g_assert (s_ip6);
+	g_object_set (G_OBJECT (s_ip6),
+	              NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP6_CONFIG_METHOD_LINK_LOCAL,
+	              NULL);
+
+	s_ip6 = nm_connection_get_setting_ip6_config (copy);
+	g_assert (s_ip6);
+	g_object_set (G_OBJECT (s_ip6),
+	              NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP6_CONFIG_METHOD_IGNORE,
+	              NULL);
+
+	matched = _match_connection (connections, orig, TRUE, 0, 0);
+	g_assert (matched == copy);
+
+	g_slist_free (connections);
+	g_object_unref (orig);
+	g_object_unref (copy);
+}
+
+static void
+test_connection_match_ip6_method_ignore_auto (void)
+{
+	NMConnection *orig, *copy, *matched;
+	GSList *connections = NULL;
+	NMSettingIPConfig *s_ip6;
+
+	orig = _match_connection_new ();
+	copy = nm_simple_connection_new_clone (orig);
+	connections = g_slist_append (connections, copy);
+
+	/* Check that if the generated connection is IPv6 method=auto, and the
+	 * candidate is method=ignore, that the candidate is matched.
+	 */
+	s_ip6 = nm_connection_get_setting_ip6_config (orig);
+	g_assert (s_ip6);
+	g_object_set (G_OBJECT (s_ip6),
+	              NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP6_CONFIG_METHOD_AUTO,
+	              NULL);
+
+	s_ip6 = nm_connection_get_setting_ip6_config (copy);
+	g_assert (s_ip6);
+	g_object_set (G_OBJECT (s_ip6),
+	              NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP6_CONFIG_METHOD_IGNORE,
+	              NULL);
+
+	matched = _match_connection (connections, orig, TRUE, 0, 0);
+	g_assert (matched == copy);
+
+	g_slist_free (connections);
+	g_object_unref (orig);
+	g_object_unref (copy);
+}
+
+static void
+test_connection_match_ip4_method (void)
+{
+	NMConnection *orig, *copy, *matched;
+	GSList *connections = NULL;
+	NMSettingIPConfig *s_ip4;
+
+	orig = _match_connection_new ();
+	copy = nm_simple_connection_new_clone (orig);
+	connections = g_slist_append (connections, copy);
+
+	/* Check that if the generated connection is IPv4 method=disabled, and the
+	 * candidate is both method=auto and may-faily=true, and the device has no
+	 * carrier that the candidate is matched.
+	 */
+	s_ip4 = nm_connection_get_setting_ip4_config (orig);
+	g_assert (s_ip4);
+	g_object_set (G_OBJECT (s_ip4),
+	              NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP4_CONFIG_METHOD_DISABLED,
+	              NULL);
+
+	s_ip4 = nm_connection_get_setting_ip4_config (copy);
+	g_assert (s_ip4);
+	g_object_set (G_OBJECT (s_ip4),
+	              NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP4_CONFIG_METHOD_AUTO,
+	              NM_SETTING_IP_CONFIG_MAY_FAIL, TRUE,
+	              NULL);
+
+	matched = _match_connection (connections, orig, FALSE, 0, 0);
+	g_assert (matched == copy);
+
+	/* Ensure when carrier=true matching fails */
+	matched = _match_connection (connections, orig, TRUE, 0, 0);
+	g_assert (matched == NULL);
+
+	g_slist_free (connections);
+	g_object_unref (orig);
+	g_object_unref (copy);
+}
+
+static void
+test_connection_match_interface_name (void)
+{
+	NMConnection *orig, *copy, *matched;
+	GSList *connections = NULL;
+	NMSettingConnection *s_con;
+
+	orig = _match_connection_new ();
+	copy = nm_simple_connection_new_clone (orig);
+	connections = g_slist_append (connections, copy);
+
+	/* Check that if the generated connection has an interface name and the
+	 * candidate's interface name is NULL, that the candidate is matched.
+	 */
+	s_con = nm_connection_get_setting_connection (orig);
+	g_assert (s_con);
+	g_object_set (G_OBJECT (s_con),
+	              NM_SETTING_CONNECTION_INTERFACE_NAME, "em1",
+	              NULL);
+
+	s_con = nm_connection_get_setting_connection (copy);
+	g_assert (s_con);
+	g_object_set (G_OBJECT (s_con),
+	              NM_SETTING_CONNECTION_INTERFACE_NAME, NULL,
+	              NULL);
+
+	matched = _match_connection (connections, orig, TRUE, 0, 0);
+	g_assert (matched == copy);
+
+	g_slist_free (connections);
+	g_object_unref (orig);
+	g_object_unref (copy);
+}
+
+static void
+test_connection_match_wired (void)
+{
+	NMConnection *orig, *copy, *matched;
+	GSList *connections = NULL;
+	NMSettingWired *s_wired;
+	char *subchan_arr[] = { "0.0.8000", "0.0.8001", "0.0.8002", NULL };
+	const char *mac = "52:54:00:ab:db:23";
+
+	orig = _match_connection_new ();
+	copy = nm_simple_connection_new_clone (orig);
+	connections = g_slist_append (connections, copy);
+
+	s_wired = nm_connection_get_setting_wired (orig);
+	g_assert (s_wired);
+	g_object_set (G_OBJECT (s_wired),
+	              NM_SETTING_WIRED_PORT, "tp",           /* port is not compared */
+	              NM_SETTING_WIRED_MAC_ADDRESS, mac,     /* we allow MAC address just in one connection */
+	              NM_SETTING_WIRED_S390_SUBCHANNELS, subchan_arr,
+	              NM_SETTING_WIRED_S390_NETTYPE, "qeth",
+	              NULL);
+
+	s_wired = nm_connection_get_setting_wired (copy);
+	g_assert (s_wired);
+	g_object_set (G_OBJECT (s_wired),
+	              NM_SETTING_WIRED_S390_SUBCHANNELS, subchan_arr,
+	              NM_SETTING_WIRED_S390_NETTYPE, "qeth",
+	              NULL);
+
+	matched = _match_connection (connections, orig, TRUE, 0, 0);
+	g_assert (matched == copy);
+
+	g_slist_free (connections);
+	g_object_unref (orig);
+	g_object_unref (copy);
+}
+
+static void
+test_connection_match_wired2 (void)
+{
+	NMConnection *orig, *copy, *matched;
+	GSList *connections = NULL;
+	NMSettingWired *s_wired;
+	const char *mac = "52:54:00:ab:db:23";
+
+	orig = _match_connection_new ();
+	s_wired = nm_connection_get_setting_wired (orig);
+	g_assert (s_wired);
+	g_object_set (G_OBJECT (s_wired),
+	              NM_SETTING_WIRED_PORT, "tp",           /* port is not compared */
+	              NM_SETTING_WIRED_MAC_ADDRESS, mac,     /* we allow MAC address just in one connection */
+	              NULL);
+
+	copy = nm_simple_connection_new_clone (orig);
+	connections = g_slist_append (connections, copy);
+
+	/* Check that if the generated connection do not have wired setting
+	 * and s390 properties in the existing connection's setting are default,
+	 * the connections match. It can happen if assuming VLAN devices. */
+	nm_connection_remove_setting (orig, NM_TYPE_SETTING_WIRED);
+
+	matched = _match_connection (connections, orig, TRUE, 0, 0);
+	g_assert (matched == copy);
+
+	g_slist_free (connections);
+	g_object_unref (orig);
+	g_object_unref (copy);
+}
+
+static void
+test_connection_match_cloned_mac (void)
+{
+	NMConnection *orig, *exact, *fuzzy, *matched;
+	GSList *connections = NULL;
+	NMSettingWired *s_wired;
+
+	orig = _match_connection_new ();
+
+	fuzzy = nm_simple_connection_new_clone (orig);
+	connections = g_slist_append (connections, fuzzy);
+	s_wired = nm_connection_get_setting_wired (orig);
+	g_assert (s_wired);
+	g_object_set (G_OBJECT (s_wired),
+	              NM_SETTING_WIRED_CLONED_MAC_ADDRESS, "52:54:00:ab:db:23",
+	              NULL);
+
+	matched = _match_connection (connections, orig, TRUE, 0, 0);
+	g_assert (matched == fuzzy);
+
+	exact = nm_simple_connection_new_clone (orig);
+	connections = g_slist_append (connections, exact);
+	s_wired = nm_connection_get_setting_wired (exact);
+	g_assert (s_wired);
+	g_object_set (G_OBJECT (s_wired),
+	              NM_SETTING_WIRED_CLONED_MAC_ADDRESS, "52:54:00:ab:db:23",
+	              NULL);
+
+	matched = _match_connection (connections, orig, TRUE, 0, 0);
+	g_assert (matched == exact);
+
+	g_object_set (G_OBJECT (s_wired),
+	              NM_SETTING_WIRED_CLONED_MAC_ADDRESS, "52:54:00:ab:db:24",
+	              NULL);
+
+	matched = _match_connection (connections, orig, TRUE, 0, 0);
+	g_assert (matched == fuzzy);
+
+	g_slist_free (connections);
+	g_object_unref (orig);
+	g_object_unref (fuzzy);
+	g_object_unref (exact);
+}
+
+static void
+test_connection_no_match_ip4_addr (void)
+{
+	NMConnection *orig, *copy, *matched;
+	GSList *connections = NULL;
+	NMSettingIPConfig *s_ip4, *s_ip6;
+	NMIPAddress *nm_addr;
+	GError *error = NULL;
+
+	orig = _match_connection_new ();
+	copy = nm_simple_connection_new_clone (orig);
+	connections = g_slist_append (connections, copy);
+
+	/* Check that if we have two differences, ipv6.method (exception we allow) and
+	 * ipv4.addresses (which is fatal), we don't match the connections.
+	 */
+	s_ip6 = nm_connection_get_setting_ip6_config (orig);
+	g_assert (s_ip6);
+	g_object_set (G_OBJECT (s_ip6),
+	              NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP6_CONFIG_METHOD_LINK_LOCAL,
+	              NULL);
+
+	s_ip6 = nm_connection_get_setting_ip6_config (copy);
+	g_assert (s_ip6);
+	g_object_set (G_OBJECT (s_ip6),
+	              NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP6_CONFIG_METHOD_IGNORE,
+	              NULL);
+
+	s_ip4 = nm_connection_get_setting_ip4_config (orig);
+	g_assert (s_ip4);
+	g_object_set (G_OBJECT (s_ip4),
+	              NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP4_CONFIG_METHOD_MANUAL,
+	              NM_SETTING_IP_CONFIG_GATEWAY, "1.1.1.254",
+	              NULL);
+	nm_addr = nm_ip_address_new (AF_INET, "1.1.1.4", 24, &error);
+	g_assert_no_error (error);
+	nm_setting_ip_config_add_address (s_ip4, nm_addr);
+	nm_ip_address_unref (nm_addr);
+
+	s_ip4 = nm_connection_get_setting_ip4_config (copy);
+	g_assert (s_ip4);
+	g_object_set (G_OBJECT (s_ip4),
+	              NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP4_CONFIG_METHOD_MANUAL,
+	              NM_SETTING_IP_CONFIG_GATEWAY, "2.2.2.254",
+	              NULL);
+	nm_addr = nm_ip_address_new (AF_INET, "2.2.2.4", 24, &error);
+	g_assert_no_error (error);
+	nm_setting_ip_config_add_address (s_ip4, nm_addr);
+	nm_ip_address_unref (nm_addr);
+
+	matched = _match_connection (connections, orig, TRUE, 0, 0);
+	g_assert (matched != copy);
+
+	g_slist_free (connections);
+	g_object_unref (orig);
+	g_object_unref (copy);
+}
+
+static void
+test_connection_no_match_vlan (void)
+{
+	NMConnection *orig, *copy, *matched;
+	GSList *connections = NULL;
+	NMSettingConnection *s_con;
+	NMSettingVlan *s_vlan_orig, *s_vlan_copy;
+	char *uuid;
+
+	orig = nm_simple_connection_new ();
+	s_con = (NMSettingConnection *) nm_setting_connection_new ();
+	nm_connection_add_setting (orig, (NMSetting *) s_con);
+	uuid = nm_utils_uuid_generate ();
+	g_object_set (G_OBJECT (s_con),
+	              NM_SETTING_CONNECTION_ID, "vlan-test",
+	              NM_SETTING_CONNECTION_UUID, uuid,
+	              NM_SETTING_CONNECTION_TYPE, NM_SETTING_VLAN_SETTING_NAME,
+	              NM_SETTING_CONNECTION_AUTOCONNECT, FALSE,
+	              NULL);
+	g_free (uuid);
+	nm_connection_add_setting (orig, nm_setting_vlan_new ());
+
+	copy = nm_simple_connection_new_clone (orig);
+	connections = g_slist_append (connections, copy);
+
+	/* Check that the connections do not match if VLAN flags differ */
+	s_vlan_orig = nm_connection_get_setting_vlan (orig);
+	g_assert (s_vlan_orig);
+	g_object_set (G_OBJECT (s_vlan_orig),
+	              NM_SETTING_VLAN_FLAGS, NM_VLAN_FLAG_REORDER_HEADERS,
+	              NULL);
+
+	s_vlan_copy = nm_connection_get_setting_vlan (copy);
+	g_assert (s_vlan_copy);
+	g_object_set (G_OBJECT (s_vlan_copy),
+	              NM_SETTING_VLAN_FLAGS, 0,
+	              NULL);
+
+	matched = _match_connection (connections, orig, TRUE, 0, 0);
+	g_assert (matched != copy);
+
+	/* Check that the connections do not match if VLAN priorities differ */
+	g_object_set (G_OBJECT (s_vlan_orig), NM_SETTING_VLAN_FLAGS, 0, NULL);
+	nm_setting_vlan_add_priority_str (s_vlan_orig, NM_VLAN_INGRESS_MAP, "1:3");
+
+	g_object_set (G_OBJECT (s_vlan_copy), NM_SETTING_VLAN_FLAGS, 0, NULL);
+	nm_setting_vlan_add_priority_str (s_vlan_copy, NM_VLAN_INGRESS_MAP, "4:2");
+
+	matched = _match_connection (connections, orig, TRUE, 0, 0);
+	g_assert (matched != copy);
+
+	g_slist_free (connections);
+	g_object_unref (orig);
+	g_object_unref (copy);
+}
+
+static void
+test_connection_match_ip4_routes1 (void)
+{
+	gs_unref_object NMConnection *orig = NULL, *copy = NULL;
+	NMConnection *matched;
+	gs_free_slist GSList *connections = NULL;
+	NMSettingIPConfig *s_ip4;
+
+	orig = _match_connection_new ();
+
+	s_ip4 = nm_connection_get_setting_ip4_config (orig);
+	g_assert (s_ip4);
+	g_object_set (G_OBJECT (s_ip4),
+	              NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP4_CONFIG_METHOD_MANUAL,
+	              NULL);
+
+	nmtst_setting_ip_config_add_address (s_ip4, "10.0.0.1", 8);
+
+	/* Clone connection */
+	copy = nm_simple_connection_new_clone (orig);
+	connections = g_slist_append (connections, copy);
+
+	/* Set routes on original connection */
+	nmtst_setting_ip_config_add_route (s_ip4, "172.25.16.0", 24, "10.0.0.2", -1);
+	nmtst_setting_ip_config_add_route (s_ip4, "172.25.17.0", 24, "10.0.0.3", 20);
+
+	/* Set single route on cloned connection */
+	s_ip4 = nm_connection_get_setting_ip4_config (copy);
+	g_assert (s_ip4);
+	nmtst_setting_ip_config_add_route (s_ip4, "172.25.17.0", 24, "10.0.0.3", 20);
+
+	/* Try to match the connections */
+	matched = _match_connection (connections, orig, FALSE, 100, 0);
+	g_assert (matched == NULL);
+}
+
+static void
+test_connection_match_ip4_routes2 (void)
+{
+	gs_unref_object NMConnection *orig = NULL, *copy = NULL;
+	NMConnection *matched;
+	gs_free_slist GSList *connections = NULL;
+	NMSettingIPConfig *s_ip4;
+
+	orig = _match_connection_new ();
+
+	s_ip4 = nm_connection_get_setting_ip4_config (orig);
+	g_assert (s_ip4);
+	g_object_set (G_OBJECT (s_ip4),
+	              NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP4_CONFIG_METHOD_MANUAL,
+	              NULL);
+
+	nmtst_setting_ip_config_add_address (s_ip4, "10.0.0.1", 8);
+
+	/* Clone connection */
+	copy = nm_simple_connection_new_clone (orig);
+	connections = g_slist_append (connections, copy);
+
+	/* Set routes on original connection */
+	nmtst_setting_ip_config_add_route (s_ip4, "172.25.16.0", 24, "10.0.0.2", -1);
+	nmtst_setting_ip_config_add_route (s_ip4, "172.25.17.0", 24, "10.0.0.3", 20);
+
+	/* Set routes on cloned connection, changing order and using explicit metrics */
+	s_ip4 = nm_connection_get_setting_ip4_config (copy);
+	g_assert (s_ip4);
+	nmtst_setting_ip_config_add_route (s_ip4, "172.25.17.0", 24, "10.0.0.3", 20);
+	nmtst_setting_ip_config_add_route (s_ip4, "172.25.16.0", 24, "10.0.0.2", 100);
+
+	/* Try to match the connections using different default metrics */
+	matched = _match_connection (connections, orig, FALSE, 100, 0);
+	g_assert (matched == copy);
+	matched = _match_connection (connections, orig, FALSE, 500, 0);
+	g_assert (matched == NULL);
+}
+
+static void
+test_connection_match_ip6_routes (void)
+{
+	gs_unref_object NMConnection *orig = NULL, *copy = NULL;
+	NMConnection *matched;
+	gs_free_slist GSList *connections = NULL;
+	NMSettingIPConfig *s_ip6;
+
+	orig = _match_connection_new ();
+
+	s_ip6 = nm_connection_get_setting_ip6_config (orig);
+	g_assert (s_ip6);
+	g_object_set (G_OBJECT (s_ip6),
+	              NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP6_CONFIG_METHOD_MANUAL,
+	              NULL);
+
+	nmtst_setting_ip_config_add_address (s_ip6, "fd01::15", 64);
+
+	/* Clone connection */
+	copy = nm_simple_connection_new_clone (orig);
+	connections = g_slist_append (connections, copy);
+
+	/* Set routes on original connection */
+	nmtst_setting_ip_config_add_route (s_ip6, "2001:db8:a:b:0:0:0:0", 64, "fd01::16", -1);
+
+	/* Set routes on cloned connection */
+	s_ip6 = nm_connection_get_setting_ip6_config (copy);
+	g_assert (s_ip6);
+	nmtst_setting_ip_config_add_route (s_ip6, "2001:db8:a:b:0:0:0:0", 64, "fd01::16", 50);
+
+	/* Try to match the connections */
+	matched = _match_connection (connections, orig, FALSE, 0, 100);
+	g_assert (matched == NULL);
+	matched = _match_connection (connections, orig, FALSE, 0, 50);
+	g_assert (matched == copy);
+}
+
+#define do_test_wildcard_match(str, result, ...) \
+	g_assert (nm_wildcard_match_check (str, \
+	                                  (const char *const[]) { __VA_ARGS__ }, \
+	                                  NM_NARG (__VA_ARGS__)) \
+	          == result);
+
+static void
+test_wildcard_match (void)
+{
+	do_test_wildcard_match ("foobar", TRUE);
+
+	do_test_wildcard_match ("foo",    TRUE,  "foo", "bar", "baz");
+	do_test_wildcard_match ("bar",    TRUE,  "foo", "bar", "baz");
+	do_test_wildcard_match ("baz",    TRUE,  "foo", "bar", "baz");
+	do_test_wildcard_match ("aaa",    FALSE, "foo", "bar", "baz");
+	do_test_wildcard_match ("",       FALSE, "foo", "bar", "baz");
+
+	do_test_wildcard_match ("ens1",   TRUE,  "ens1*");
+	do_test_wildcard_match ("ens10",  TRUE,  "ens1*");
+	do_test_wildcard_match ("ens11",  TRUE,  "ens1*");
+	do_test_wildcard_match ("ens12",  TRUE,  "ens1*");
+	do_test_wildcard_match ("eth0",   FALSE, "ens1*");
+	do_test_wildcard_match ("ens",    FALSE, "ens1*");
+
+	do_test_wildcard_match ("ens1*",  TRUE,  "ens1\\*");
+	do_test_wildcard_match ("ens1" ,  FALSE, "ens1\\*");
+	do_test_wildcard_match ("ens10",  FALSE, "ens1\\*");
+
+	do_test_wildcard_match ("abcd",   TRUE,   "ab??");
+	do_test_wildcard_match ("ab",     FALSE,  "ab??");
+
+	do_test_wildcard_match ("ab??",   TRUE,  "ab\\?\\?");
+	do_test_wildcard_match ("abcd",   FALSE, "ab\\?\\?");
+
+	do_test_wildcard_match ("ens10",  TRUE,  "ens1*", "!ens11");
+	do_test_wildcard_match ("ens11",  FALSE, "ens1*", "!ens11");
+	do_test_wildcard_match ("ens12",  TRUE,  "ens1*", "!ens11");
+
+	do_test_wildcard_match ("a",      FALSE, "!a", "!b");
+	do_test_wildcard_match ("b",      FALSE, "!a", "!b");
+	do_test_wildcard_match ("c",      TRUE,  "!a", "!b");
+	do_test_wildcard_match ("!a",     TRUE,  "!a", "!b");
+
+	do_test_wildcard_match ("!net",   TRUE,  "\\!net");
+	do_test_wildcard_match ("net",    FALSE, "\\!net");
+	do_test_wildcard_match ("ens10",  FALSE, "\\!net");
+	do_test_wildcard_match ("\\!net", FALSE, "\\!net");
+
+	do_test_wildcard_match ("eth0",   FALSE, "*eth?", "!veth*", "!*0");
+	do_test_wildcard_match ("eth1",   TRUE,  "*eth?", "!veth*", "!*0");
+	do_test_wildcard_match ("myeth0", FALSE, "*eth?", "!veth*", "!*0");
+	do_test_wildcard_match ("myeth2", TRUE,  "*eth?", "!veth*", "!*0");
+	do_test_wildcard_match ("veth0",  FALSE, "*eth?", "!veth*", "!*0");
+	do_test_wildcard_match ("veth1",  FALSE, "*eth?", "!veth*", "!*0");
+	do_test_wildcard_match ("dummy1", FALSE, "*eth?", "!veth*", "!*0");
+
+	do_test_wildcard_match ("a",      TRUE,  "!!a");
+	do_test_wildcard_match ("b",      TRUE,  "!!a");
+	do_test_wildcard_match ("!a",     FALSE, "!!a");
+
+	do_test_wildcard_match ("\\",     TRUE,  "\\\\");
+	do_test_wildcard_match ("\\\\",   FALSE, "\\\\");
+	do_test_wildcard_match ("",       FALSE, "\\\\");
+
+	do_test_wildcard_match ("name",   FALSE, "name[123]");
+	do_test_wildcard_match ("name1",  TRUE,  "name[123]");
+	do_test_wildcard_match ("name2",  TRUE,  "name[123]");
+	do_test_wildcard_match ("name3",  TRUE,  "name[123]");
+	do_test_wildcard_match ("name4",  FALSE, "name[123]");
+
+	do_test_wildcard_match ("[a]",    TRUE,  "\\[a\\]");
+}
+
+static NMConnection *
+_create_connection_autoconnect (const char *id, gboolean autoconnect, int autoconnect_priority)
+{
+	NMConnection *c;
+	NMSettingConnection *s_con;
+
+	c = nmtst_create_minimal_connection (id, NULL, NM_SETTING_WIRED_SETTING_NAME, &s_con);
+	g_object_set (s_con,
+	              NM_SETTING_CONNECTION_AUTOCONNECT, autoconnect,
+	              NM_SETTING_CONNECTION_AUTOCONNECT_PRIORITY, autoconnect_priority,
+	              NULL);
+	nmtst_connection_normalize (c);
+	return c;
+}
+
+static int
+_cmp_autoconnect_priority_p_with_data (gconstpointer pa, gconstpointer pb, gpointer user_data)
+{
+	return nm_utils_cmp_connection_by_autoconnect_priority (*((NMConnection **) pa), *((NMConnection **) pb));
+}
+
+static void
+_test_connection_sort_autoconnect_priority_one (NMConnection **list, gboolean shuffle)
+{
+	int i, j;
+	int count = 0;
+	gs_unref_ptrarray GPtrArray *connections = g_ptr_array_new ();
+
+	while (list[count])
+		count++;
+	g_assert (count > 1);
+
+	/* copy the list of connections over to @connections and shuffle. */
+	for (i = 0; i < count; i++)
+		g_ptr_array_add (connections, list[i]);
+	if (shuffle) {
+		for (i = count - 1; i > 0; i--) {
+			j = g_rand_int (nmtst_get_rand ()) % (i + 1);
+			NMTST_SWAP (connections->pdata[i], connections->pdata[j]);
+		}
+	}
+
+	/* sort it... */
+	g_ptr_array_sort_with_data (connections, _cmp_autoconnect_priority_p_with_data, NULL);
+
+	for (i = 0; i < count; i++) {
+		if (list[i] == connections->pdata[i])
+			continue;
+		if (shuffle && nm_utils_cmp_connection_by_autoconnect_priority (list[i], connections->pdata[i]) == 0)
+			continue;
+		g_message ("After sorting, the order of connections is not as expected!! Offending index: %d", i);
+		for (j = 0; j < count; j++)
+			g_message ("  %3d:  %p/%-20s - %p/%-20s", j, list[j], nm_connection_get_id (list[j]), connections->pdata[j], nm_connection_get_id (connections->pdata[j]));
+		g_assert_not_reached ();
+	}
+}
+
+static void
+_test_connection_sort_autoconnect_priority_free (NMConnection **list)
+{
+	while (*list) {
+		g_object_unref (*list);
+		*list = NULL;
+	}
+}
+
+static void
+test_connection_sort_autoconnect_priority (void)
+{
+	NMConnection *c1[] = {
+		_create_connection_autoconnect ("AC/100", TRUE, 100),
+		_create_connection_autoconnect ("AC/100", TRUE, 100),
+		_create_connection_autoconnect ("AC/99", TRUE, 99),
+		_create_connection_autoconnect ("AC/0", TRUE, 0),
+		_create_connection_autoconnect ("AC/0", TRUE, 0),
+		_create_connection_autoconnect ("AC/-1", TRUE, -1),
+		_create_connection_autoconnect ("AC/-3", TRUE, -3),
+		_create_connection_autoconnect ("ac/0", FALSE, 0),
+		_create_connection_autoconnect ("ac/0", FALSE, 0),
+		_create_connection_autoconnect ("ac/1", FALSE, 1),
+		_create_connection_autoconnect ("ac/-1", FALSE, -1),
+		_create_connection_autoconnect ("ac/1", FALSE, 1),
+		_create_connection_autoconnect ("ac/0", FALSE, 0),
+		NULL,
+	};
+	NMConnection *c2[] = {
+		_create_connection_autoconnect ("AC/100", TRUE, 100),
+		_create_connection_autoconnect ("AC/99", TRUE, 99),
+		_create_connection_autoconnect ("AC/0", TRUE, 0),
+		_create_connection_autoconnect ("AC/-1", TRUE, -1),
+		_create_connection_autoconnect ("AC/-3", TRUE, -3),
+		_create_connection_autoconnect ("ac/0", FALSE, 0),
+		NULL,
+	};
+
+	_test_connection_sort_autoconnect_priority_one (c1, FALSE);
+	_test_connection_sort_autoconnect_priority_one (c2, FALSE);
+	_test_connection_sort_autoconnect_priority_one (c1, TRUE);
+	_test_connection_sort_autoconnect_priority_one (c2, TRUE);
+
+	_test_connection_sort_autoconnect_priority_free (c1);
+	_test_connection_sort_autoconnect_priority_free (c2);
+}
+
+/*****************************************************************************/
+
+#define MATCH_S390 "S390:"
+#define MATCH_DRIVER "DRIVER:"
+
+static NMMatchSpecMatchType
+_test_match_spec_device (const GSList *specs, const char *match_str)
+{
+	if (match_str && g_str_has_prefix (match_str, MATCH_S390))
+		return nm_match_spec_device (specs, NULL, NULL, NULL, NULL, NULL, &match_str[NM_STRLEN (MATCH_S390)], NULL);
+	if (match_str && g_str_has_prefix (match_str, MATCH_DRIVER)) {
+		gs_free char *s = g_strdup (&match_str[NM_STRLEN (MATCH_DRIVER)]);
+		char *t;
+
+		t = strchr (s, '|');
+		if (t) {
+			t[0] = '\0';
+			t++;
+		}
+		return nm_match_spec_device (specs, NULL, NULL, s, t, NULL, NULL, NULL);
+	}
+	return nm_match_spec_device (specs, match_str, NULL, NULL, NULL, NULL, NULL, NULL);
+}
+
+static void
+_do_test_match_spec_device (const char *spec_str,
+                            const char *const *matches,
+                            const char *const *no_matches,
+                            const char *const *neg_matches)
+{
+	GSList *specs, *specs_randperm = NULL, *specs_resplit, *specs_i, *specs_j;
+	guint i;
+	gs_free char *specs_joined = NULL;
+	const char *s;
+	static const char *no_matches_default[] = {
+		"e",
+		"em",
+		"em*",
+		"em\\",
+		"em\\*",
+		"em\\1",
+		"em\\11",
+		"em\\2",
+		"em1",
+		"em11",
+		"em2",
+		"=em*",
+		NULL
+	};
+
+	g_assert (spec_str);
+
+	specs = nm_match_spec_split (spec_str);
+
+	/* assert that split(join(specs)) == specs */
+	specs_joined = nm_match_spec_join (specs);
+	specs_resplit = nm_match_spec_split (specs_joined);
+	specs_i = specs;
+	specs_j = specs_resplit;
+	while (specs_i && specs_j && g_strcmp0 (specs_i->data, specs_j->data) == 0) {
+		specs_i = specs_i->next;
+		specs_j = specs_j->next;
+	}
+	g_assert (!specs_i);
+	g_assert (!specs_j);
+	g_slist_free_full (specs_resplit, g_free);
+
+	/* also check the matches in the random order. They must yield the same result because
+	 * matches are inclusive -- except "except:" which always wins. */
+	specs_randperm = nmtst_rand_perm_gslist (NULL, g_slist_copy (specs));
+
+	for (i = 0; matches && matches[i]; i++) {
+		g_assert (_test_match_spec_device (specs, matches[i]) == NM_MATCH_SPEC_MATCH);
+		g_assert (_test_match_spec_device (specs_randperm, matches[i]) == NM_MATCH_SPEC_MATCH);
+	}
+	for (i = 0; neg_matches && neg_matches[i]; i++) {
+		g_assert (_test_match_spec_device (specs, neg_matches[i]) == NM_MATCH_SPEC_NEG_MATCH);
+		g_assert (_test_match_spec_device (specs_randperm, neg_matches[i]) == NM_MATCH_SPEC_NEG_MATCH);
+	}
+	for (i = 0; no_matches && no_matches[i]; i++) {
+		g_assert (_test_match_spec_device (specs, no_matches[i]) == NM_MATCH_SPEC_NO_MATCH);
+		g_assert (_test_match_spec_device (specs_randperm, no_matches[i]) == NM_MATCH_SPEC_NO_MATCH);
+	}
+	if (!no_matches) {
+		for (i = 0; (s = no_matches_default[i]); i++) {
+			if (   (matches && g_strv_contains (matches, s))
+			    || (neg_matches && g_strv_contains (neg_matches, s)))
+				continue;
+			g_assert (_test_match_spec_device (specs, s) == NM_MATCH_SPEC_NO_MATCH);
+			g_assert (_test_match_spec_device (specs_randperm, s) == NM_MATCH_SPEC_NO_MATCH);
+		}
+	}
+
+	g_slist_free (specs_randperm);
+	g_slist_free_full (specs, g_free);
+}
+
+static void
+test_match_spec_device (void)
+{
+	_do_test_match_spec_device ("em1",
+	                            NM_MAKE_STRV ("em1"),
+	                            NULL,
+	                            NULL);
+	_do_test_match_spec_device ("em1,em2",
+	                            NM_MAKE_STRV ("em1", "em2"),
+	                            NULL,
+	                            NULL);
+	_do_test_match_spec_device ("em1,em2,interface-name:em2",
+	                            NM_MAKE_STRV ("em1", "em2"),
+	                            NULL,
+	                            NULL);
+	_do_test_match_spec_device ("interface-name:em1",
+	                            NM_MAKE_STRV ("em1"),
+	                            NULL,
+	                            NULL);
+	_do_test_match_spec_device ("interface-name:em*",
+	                            NM_MAKE_STRV ("em", "em*", "em\\", "em\\*", "em\\1", "em\\11", "em\\2", "em1", "em11", "em2", "em3"),
+	                            NULL,
+	                            NULL);
+	_do_test_match_spec_device ("interface-name:em\\*",
+	                            NM_MAKE_STRV ("em\\", "em\\*", "em\\1", "em\\11", "em\\2"),
+	                            NULL,
+	                            NULL);
+	_do_test_match_spec_device ("interface-name:~em\\*",
+	                            NM_MAKE_STRV ("em\\", "em\\*", "em\\1", "em\\11", "em\\2"),
+	                            NULL,
+	                            NULL);
+	_do_test_match_spec_device ("except:*",
+	                            NULL,
+	                            NM_MAKE_STRV (NULL),
+	                            NM_MAKE_STRV ("a"));
+	_do_test_match_spec_device ("interface-name:=em*",
+	                            NM_MAKE_STRV ("em*"),
+	                            NULL,
+	                            NULL);
+	_do_test_match_spec_device ("interface-name:em*,except:interface-name:em1*",
+	                            NM_MAKE_STRV ("em", "em*", "em\\", "em\\*", "em\\1", "em\\11", "em\\2", "em2", "em3"),
+	                            NULL,
+	                            NM_MAKE_STRV ("em1", "em11"));
+	_do_test_match_spec_device ("interface-name:em*,except:interface-name:=em*",
+	                            NM_MAKE_STRV ("em", "em\\", "em\\*", "em\\1", "em\\11", "em\\2", "em1", "em11", "em2", "em3"),
+	                            NULL,
+	                            NM_MAKE_STRV ("em*"));
+	_do_test_match_spec_device ("except:interface-name:em*",
+	                            NM_MAKE_STRV ("", "eth", "eth1", "e1"),
+	                            NM_MAKE_STRV (NULL),
+	                            NM_MAKE_STRV ("em", "em\\", "em\\*", "em\\1", "em\\11", "em\\2", "em1", "em11", "em2", "em3"));
+	_do_test_match_spec_device ("aa,bb,cc\\,dd,e,,",
+	                            NM_MAKE_STRV ("aa", "bb", "cc,dd", "e"),
+	                            NULL,
+	                            NULL);
+	_do_test_match_spec_device ("aa;bb;cc\\;dd;e,;",
+	                            NM_MAKE_STRV ("aa", "bb", "cc;dd", "e"),
+	                            NULL,
+	                            NULL);
+	_do_test_match_spec_device ("interface-name:em\\;1,em\\,2,\\,,\\\\,,em\\\\x",
+	                            NM_MAKE_STRV ("em;1", "em,2", ",", "\\", "em\\x"),
+	                            NULL,
+	                            NULL);
+	_do_test_match_spec_device ("\\s\\s,\\sinterface-name:a,\\s,",
+	                            NM_MAKE_STRV ("  ", " ", " interface-name:a"),
+	                            NULL,
+	                            NULL);
+	_do_test_match_spec_device (" aa ;  bb   ; cc\\;dd  ;e , ; \t\\t  , ",
+	                            NM_MAKE_STRV ("aa", "bb", "cc;dd", "e", "\t"),
+	                            NULL,
+	                            NULL);
+
+	_do_test_match_spec_device ("s390-subchannels:0.0.1000\\,0.0.1001",
+	                            NM_MAKE_STRV (MATCH_S390"0.0.1000", MATCH_S390"0.0.1000,deadbeef", MATCH_S390"0.0.1000,0.0.1001", MATCH_S390"0.0.1000,0.0.1002"),
+	                            NM_MAKE_STRV (MATCH_S390"0.0.1001"),
+	                            NULL);
+	_do_test_match_spec_device ("*,except:s390-subchannels:0.0.1000\\,0.0.1001",
+	                            NULL,
+	                            NM_MAKE_STRV (NULL),
+	                            NM_MAKE_STRV (MATCH_S390"0.0.1000", MATCH_S390"0.0.1000,deadbeef", MATCH_S390"0.0.1000,0.0.1001", MATCH_S390"0.0.1000,0.0.1002"));
+
+	_do_test_match_spec_device ("driver:DRV",
+	                            NM_MAKE_STRV (MATCH_DRIVER"DRV", MATCH_DRIVER"DRV|1.6"),
+	                            NM_MAKE_STRV (MATCH_DRIVER"DR", MATCH_DRIVER"DR*"),
+	                            NULL);
+	_do_test_match_spec_device ("driver:DRV//",
+	                            NM_MAKE_STRV (MATCH_DRIVER"DRV/"),
+	                            NM_MAKE_STRV (MATCH_DRIVER"DRV/|1.6", MATCH_DRIVER"DR", MATCH_DRIVER"DR*"),
+	                            NULL);
+	_do_test_match_spec_device ("driver:DRV//*",
+	                            NM_MAKE_STRV (MATCH_DRIVER"DRV/", MATCH_DRIVER"DRV/|1.6"),
+	                            NM_MAKE_STRV (MATCH_DRIVER"DR", MATCH_DRIVER"DR*"),
+	                            NULL);
+	_do_test_match_spec_device ("driver:DRV//1.5*",
+	                            NM_MAKE_STRV (MATCH_DRIVER"DRV/|1.5", MATCH_DRIVER"DRV/|1.5.2"),
+	                            NM_MAKE_STRV (MATCH_DRIVER"DRV/", MATCH_DRIVER"DRV/|1.6", MATCH_DRIVER"DR", MATCH_DRIVER"DR*"),
+	                            NULL);
+}
+
+/*****************************************************************************/
+
+static void
+_do_test_match_spec_config (const char *file, int line, const char *spec_str, guint version, guint v_maj, guint v_min, guint v_mic, NMMatchSpecMatchType expected)
+{
+	GSList *specs;
+	NMMatchSpecMatchType match_result;
+	guint c_maj, c_min, c_mic;
+
+	g_assert_cmpint (version, ==, nm_encode_version (v_maj, v_min, v_mic));
+
+	nm_decode_version (version, &c_maj, &c_min, &c_mic);
+	g_assert_cmpint (c_maj, ==, c_maj);
+	g_assert_cmpint (c_min, ==, c_min);
+	g_assert_cmpint (c_mic, ==, c_mic);
+
+	specs = nm_match_spec_split (spec_str);
+
+	match_result = nm_match_spec_config (specs, version, NULL);
+
+	if (expected != match_result)
+		g_error ("%s:%d: failed comparing \"%s\" with %u.%u.%u. Expected %d, but got %d", file, line, spec_str, v_maj, v_min, v_mic, (int) expected, (int) match_result);
+
+	if (   g_slist_length (specs) == 1
+	    && !g_str_has_prefix (specs->data, "except:")) {
+		/* there is only one spec in the list... test that we match except: */
+		char *sss = g_strdup_printf ("except:%s", (char *) specs->data);
+		GSList *specs2 = g_slist_append (NULL, sss);
+		NMMatchSpecMatchType match_result2;
+
+		match_result2 = nm_match_spec_config (specs2, version, NULL);
+		if (match_result == NM_MATCH_SPEC_NO_MATCH)
+			g_assert_cmpint (match_result2, ==, NM_MATCH_SPEC_MATCH);
+		else
+			g_assert_cmpint (match_result2, ==, NM_MATCH_SPEC_NEG_MATCH);
+
+		g_slist_free_full (specs2, g_free);
+	}
+
+	g_slist_free_full (specs, g_free);
+}
+#define do_test_match_spec_config(spec, v_maj, v_min, v_mic, expected) \
+	_do_test_match_spec_config (__FILE__, __LINE__, (""spec), NM_ENCODE_VERSION ((v_maj), (v_min), (v_mic)), (v_maj), (v_min), (v_mic), (expected))
+
+static void
+test_match_spec_config (void)
+{
+	do_test_match_spec_config ("", 1, 2, 3, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version:1.2.3", 1, 2, 2, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version:1.2.3", 1, 2, 3, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version:1.2.3", 1, 2, 4, NM_MATCH_SPEC_NO_MATCH);
+
+	do_test_match_spec_config ("nm-version:1.2", 1, 1, 2, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version:1.2", 1, 2, 0, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version:1.2", 1, 2, 2, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version:1.2", 1, 2, 3, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version:1.2", 1, 2, 4, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version:1.2", 1, 3, 0, NM_MATCH_SPEC_NO_MATCH);
+
+	do_test_match_spec_config ("nm-version-min:1.2.3", 0, 2, 30, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.2.3", 1, 1, 1, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.2.3", 1, 2, 2, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.2.3", 1, 2, 3, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.2.3", 1, 2, 5, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.2.3", 1, 3, 0, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.2.3", 1, 3, 30, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.2.3", 1, 4, 30, NM_MATCH_SPEC_NO_MATCH);
+
+	do_test_match_spec_config ("nm-version-min:1.2", 0, 2, 30, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.2", 1, 1, 1, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.2", 1, 2, 0, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.2", 1, 2, 3, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.2", 1, 2, 5, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.2", 1, 3, 0, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.2", 1, 3, 30, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.2", 1, 4, 30, NM_MATCH_SPEC_MATCH);
+
+	do_test_match_spec_config ("nm-version-min:1", 0, 2, 30, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-min:1", 1, 1, 1, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1", 1, 2, 0, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1", 1, 2, 3, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1", 1, 2, 5, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1", 1, 3, 0, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1", 1, 3, 30, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1", 1, 4, 30, NM_MATCH_SPEC_MATCH);
+
+	do_test_match_spec_config ("nm-version-max:1.2.3", 0, 2, 30, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-max:1.2.3", 1, 1, 1, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-max:1.2.3", 1, 2, 0, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-max:1.2.3", 1, 2, 1, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-max:1.2.3", 1, 2, 2, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-max:1.2.3", 1, 2, 3, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-max:1.2.3", 1, 2, 5, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-max:1.2.3", 1, 3, 0, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-max:1.2.3", 1, 3, 30, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-max:1.2.3", 1, 4, 30, NM_MATCH_SPEC_NO_MATCH);
+
+	do_test_match_spec_config ("nm-version-max:1.2", 0, 2, 30, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-max:1.2", 1, 1, 1, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-max:1.2", 1, 2, 0, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-max:1.2", 1, 2, 3, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-max:1.2", 1, 2, 5, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-max:1.2", 1, 3, 0, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-max:1.2", 1, 3, 30, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-max:1.2", 1, 4, 30, NM_MATCH_SPEC_NO_MATCH);
+
+	do_test_match_spec_config ("nm-version-max:1", 0, 2, 30, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-max:1", 1, 1, 1, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-max:1", 1, 2, 0, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-max:1", 1, 2, 3, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-max:1", 1, 2, 5, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-max:1", 1, 3, 0, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-max:1", 1, 3, 30, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-max:1", 1, 4, 30, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-max:1", 2, 4, 30, NM_MATCH_SPEC_NO_MATCH);
+
+	do_test_match_spec_config ("except:nm-version:1.4.8", 1, 6, 0, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.6,except:nm-version:1.4.8", 1, 6, 0, NM_MATCH_SPEC_MATCH);
+
+	do_test_match_spec_config ("nm-version-min:1.6,nm-version-min:1.4.6,nm-version-min:1.2.16,except:nm-version:1.4.8", 1, 2, 0, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.6,nm-version-min:1.4.6,nm-version-min:1.2.16,except:nm-version:1.4.8", 1, 2, 0, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.6,nm-version-min:1.4.6,nm-version-min:1.2.16,except:nm-version:1.4.8", 1, 2, 15, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.6,nm-version-min:1.4.6,nm-version-min:1.2.16,except:nm-version:1.4.8", 1, 2, 16, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.6,nm-version-min:1.4.6,nm-version-min:1.2.16,except:nm-version:1.4.8", 1, 2, 17, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.6,nm-version-min:1.4.6,nm-version-min:1.2.16,except:nm-version:1.4.8", 1, 2, 20, NM_MATCH_SPEC_MATCH);
+
+	do_test_match_spec_config ("nm-version-min:1.6,nm-version-min:1.4.6,nm-version-min:1.2.16,except:nm-version:1.4.8", 1, 3, 0, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.6,nm-version-min:1.4.6,nm-version-min:1.2.16,except:nm-version:1.4.8", 1, 4, 0, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.6,nm-version-min:1.4.6,nm-version-min:1.2.16,except:nm-version:1.4.8", 1, 4, 5, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.6,nm-version-min:1.4.6,nm-version-min:1.2.16,except:nm-version:1.4.8", 1, 4, 6, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.6,nm-version-min:1.4.6,nm-version-min:1.2.16,except:nm-version:1.4.8", 1, 4, 7, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.6,nm-version-min:1.4.6,nm-version-min:1.2.16,except:nm-version:1.4.8", 1, 4, 8, NM_MATCH_SPEC_NEG_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.6,nm-version-min:1.4.6,nm-version-min:1.2.16,except:nm-version:1.4.8", 1, 4, 9, NM_MATCH_SPEC_MATCH);
+
+	do_test_match_spec_config ("nm-version-min:1.6,nm-version-min:1.4.6,nm-version-min:1.2.16,except:nm-version:1.4.8", 1, 5, 0, NM_MATCH_SPEC_NO_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.6,nm-version-min:1.4.6,nm-version-min:1.2.16,except:nm-version:1.4.8", 1, 6, 0, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.6,nm-version-min:1.4.6,nm-version-min:1.2.16,except:nm-version:1.4.8", 1, 6, 5, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.6,nm-version-min:1.4.6,nm-version-min:1.2.16,except:nm-version:1.4.8", 1, 7, 7, NM_MATCH_SPEC_MATCH);
+	do_test_match_spec_config ("nm-version-min:1.6,nm-version-min:1.4.6,nm-version-min:1.2.16,except:nm-version:1.4.8", 1, 8, 8, NM_MATCH_SPEC_MATCH);
+}
+
+/*****************************************************************************/
+
+static void
+test_nm_utils_strbuf_append (void)
+{
+#define BUF_ORIG "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+#define STR_ORIG "abcdefghijklmnopqrstuvwxyz"
+	int buf_len;
+	int rep;
+	char buf[NM_STRLEN (BUF_ORIG) + 1];
+	char str[NM_STRLEN (BUF_ORIG) + 1];
+
+#define _strbuf_append(buf, len, format, ...) \
+	G_STMT_START { \
+		char **_buf = (buf); \
+		gsize *_len = (len); \
+		const char *_str_iter; \
+		gs_free char *_str = NULL; \
+		\
+		switch (nmtst_get_rand_uint32 () % 4) { \
+		case 0: \
+			nm_utils_strbuf_append (_buf, _len, (format), __VA_ARGS__); \
+			break; \
+		case 1: \
+			_str = g_strdup_printf ((format), __VA_ARGS__); \
+			nm_utils_strbuf_append_str (_buf, _len, _str); \
+			break; \
+		case 2: \
+			_str = g_strdup_printf ((format), __VA_ARGS__); \
+			nm_utils_strbuf_append_bin (_buf, _len, _str, strlen (_str)); \
+			break; \
+		case 3: \
+			_str = g_strdup_printf ((format), __VA_ARGS__); \
+			if (!_str[0]) \
+				nm_utils_strbuf_append_str (_buf, _len, _str); \
+			for (_str_iter = _str; _str_iter[0]; _str_iter++) \
+				nm_utils_strbuf_append_c (_buf, _len, _str_iter[0]); \
+			break; \
+		} \
+	} G_STMT_END
+
+#define _strbuf_append_str(buf, len, str) \
+	G_STMT_START { \
+		char **_buf = (buf); \
+		gsize *_len = (len); \
+		const char *_str = (str); \
+		\
+		switch (nmtst_get_rand_uint32 () % 4) { \
+		case 0: \
+			nm_utils_strbuf_append (_buf, _len, "%s", _str ?: ""); \
+			break; \
+		case 1: \
+			nm_utils_strbuf_append_str (_buf, _len, _str); \
+			break; \
+		case 2: \
+			nm_utils_strbuf_append_bin (_buf, _len, _str, _str ? strlen (_str) : 0); \
+			break; \
+		case 3: \
+			if (!_str || !_str[0]) \
+				nm_utils_strbuf_append_str (_buf, _len, _str); \
+			for (; _str && _str[0]; _str++) \
+				nm_utils_strbuf_append_c (_buf, _len, _str[0]); \
+			break; \
+		} \
+	} G_STMT_END
+
+#define _strbuf_append_c(buf, len, ch) \
+	G_STMT_START { \
+		char **_buf = (buf); \
+		gsize *_len = (len); \
+		char _ch = (ch); \
+		\
+		switch (nmtst_get_rand_uint32 () % 4) { \
+		case 0: \
+			nm_utils_strbuf_append (_buf, _len, "%c", _ch); \
+			break; \
+		case 1: \
+			nm_utils_strbuf_append_str (_buf, _len, ((char[2]) { _ch, 0 })); \
+			break; \
+		case 2: \
+			nm_utils_strbuf_append_bin (_buf, _len, &_ch, 1); \
+			break; \
+		case 3: \
+			nm_utils_strbuf_append_c (_buf, _len, _ch); \
+			break; \
+		} \
+	} G_STMT_END
+
+	for (buf_len = 0; buf_len < 10; buf_len++) {
+		for (rep = 0; rep < 50; rep++) {
+			const int s_len = nmtst_get_rand_uint32 () % (sizeof (str) - 5);
+			char *t_buf;
+			gsize t_len;
+			int test_mode;
+
+			strcpy (str, STR_ORIG);
+			str[s_len] = '\0';
+
+			g_assert_cmpint (str[sizeof (str) - 1], ==, '\0');
+			g_assert_cmpint (strlen (str), ==, s_len);
+
+			strcpy (buf, BUF_ORIG);
+
+			t_buf = buf;
+			t_len = buf_len;
+
+			test_mode = nmtst_get_rand_uint32 () % 5;
+
+			switch (test_mode) {
+			case 0:
+				if (s_len == 1) {
+					_strbuf_append_c (&t_buf, &t_len, str[0]);
+					break;
+				}
+				/* fall through */
+			case 1:
+				_strbuf_append_str (&t_buf, &t_len, str);
+				break;
+			case 2:
+				if (s_len == 1) {
+					_strbuf_append (&t_buf, &t_len, "%c", str[0]);
+					break;
+				}
+				/* fall through */
+			case 3:
+				_strbuf_append (&t_buf, &t_len, "%s", str);
+				break;
+			case 4:
+				g_snprintf (t_buf, t_len, "%s", str);
+				if (   t_len > 0
+				    && strlen (str) >= buf_len
+				    && (nmtst_get_rand_uint32 () % 2)) {
+					/* the string was truncated by g_snprintf(). That means, at the last position in the
+					 * buffer is now NUL.
+					 * Replace the NUL by the actual character, and check that nm_utils_strbuf_seek_end()
+					 * does the right thing: NUL terminate the buffer and seek past the end of the buffer. */
+					g_assert_cmpmem (t_buf, t_len - 1, str, t_len - 1);
+					g_assert (t_buf[t_len - 1] == '\0');
+					g_assert (str[t_len - 1] != '\0');
+					t_buf[t_len - 1] = str[t_len - 1];
+					nm_utils_strbuf_seek_end (&t_buf, &t_len);
+					g_assert (t_len == 0);
+					g_assert (t_buf == &buf[buf_len]);
+					g_assert (t_buf[-1] == '\0');
+				} else {
+					nm_utils_strbuf_seek_end (&t_buf, &t_len);
+					if (   buf_len > 0
+					    && strlen (str) + 1 > buf_len) {
+						/* the buffer was truncated by g_snprintf() above.
+						 *
+						 * But nm_utils_strbuf_seek_end() does not recognize that and returns
+						 * a remaining length of 1.
+						 *
+						 * Note that other nm_utils_strbuf_append*() functions recognize
+						 * truncation, and properly set the remaining length to zero.
+						 * As the assertions below check for the behavior of nm_utils_strbuf_append*(),
+						 * we assert here that nm_utils_strbuf_seek_end() behaved as expected, and then
+						 * adjust t_buf/t_len according to the "is-truncated" case. */
+						g_assert (t_len == 1);
+						g_assert (t_buf == &buf[buf_len - 1]);
+						g_assert (t_buf[0] == '\0');
+						t_len = 0;
+						t_buf++;
+					}
+				}
+				break;
+			}
+
+			/* Assert that the source-buffer is unmodified. */
+			g_assert_cmpint (str[s_len], ==, '\0');
+			str[s_len] = STR_ORIG[s_len];
+			g_assert (!memcmp (str, STR_ORIG, sizeof (str)));
+			str[s_len] = '\0';
+
+			g_assert_cmpint (t_len, >=, 0);
+			g_assert_cmpint (t_len, <=, buf_len);
+			g_assert (t_buf >= buf);
+
+			/* Assert what was written to the destination buffer. */
+			switch (buf_len) {
+			case 0:
+				g_assert_cmpint (t_len, ==, 0);
+				g_assert (t_buf == buf);
+				g_assert (!memcmp (buf, BUF_ORIG, sizeof (buf)));
+				break;
+			case 1:
+				if (s_len == 0) {
+					g_assert_cmpint (t_len, ==, 1);
+					g_assert (t_buf == buf);
+					g_assert (buf[0] == '\0');
+					g_assert (!memcmp (&buf[1], &BUF_ORIG[1], sizeof (buf) - 1));
+				} else {
+					g_assert_cmpint (t_len, ==, 0);
+					g_assert (t_buf == &buf[1]);
+					g_assert (buf[0] == '\0');
+					g_assert (!memcmp (&buf[1], &BUF_ORIG[1], sizeof (buf) - 1));
+				}
+				break;
+			default:
+				if (s_len == 0) {
+					g_assert_cmpint (t_len, ==, buf_len);
+					g_assert (t_buf == buf);
+					g_assert (buf[0] == '\0');
+					g_assert (!memcmp (&buf[1], &BUF_ORIG[1], sizeof (buf) - 1));
+				} else if (buf_len <= s_len) {
+					g_assert_cmpint (t_len, ==, 0);
+					g_assert (t_buf == &buf[buf_len]);
+					g_assert (!memcmp (buf, STR_ORIG, buf_len - 1));
+					g_assert (buf[buf_len - 1] == '\0');
+					g_assert (!memcmp (&buf[buf_len], &BUF_ORIG[buf_len], sizeof (buf) - buf_len));
+				} else {
+					g_assert_cmpint (t_len, >, 0);
+					g_assert_cmpint (buf_len - t_len, ==, s_len);
+					g_assert_cmpint (strlen (buf), ==, s_len);
+					g_assert (t_buf == &buf[s_len]);
+					g_assert (!memcmp (buf, STR_ORIG, s_len));
+					g_assert (buf[s_len] == '\0');
+					g_assert (!memcmp (&buf[s_len + 1], &BUF_ORIG[s_len + 1], sizeof (buf) - s_len - 1));
+				}
+				break;
+			}
+		}
+	}
+}
+
+/*****************************************************************************/
+
+static void
+test_duplicate_decl_specifier (void)
+{
+	/* We're intentionally assigning values to static arrays v_const
+	 * and v_result without using it afterwards just so that valgrind
+	 * doesn't complain about the leak. */
+	NM_PRAGMA_WARNING_DISABLE("-Wunused-but-set-variable")
+
+	/* have some static variables, so that the result is certainly not optimized out. */
+	static const int v_const[1] = { 1 };
+	static int v_result[1] = { };
+	const int v2 = 3;
+
+	/* Test that we don't get a compiler warning about duplicate const specifier.
+	 * C99 allows that and it can easily happen in macros. */
+
+#define TEST_MAX(a, b) \
+	({ \
+		const typeof(a) _a = (a); \
+		const typeof(b) _b = (b); \
+		\
+		(_a > _b ? _a : _b); \
+	})
+
+	v_result[0] = TEST_MAX (v_const[0], nmtst_get_rand_uint32 () % 5) + v2;
+
+	NM_PRAGMA_WARNING_REENABLE
+}
+
+static void
+test_reverse_dns_ip4 (void)
+{
+	guint32 addr;
+	GPtrArray *domains = g_ptr_array_new_full (8, g_free);
+
+	inet_pton (AF_INET, "7.2.3.0", &addr);
+	nm_utils_get_reverse_dns_domains_ip4 (addr, 27, domains);
+	g_assert_cmpuint (domains->len, ==, 32);
+	g_assert_cmpstr (domains->pdata[0], ==, "0.3.2.7.in-addr.arpa");
+	g_assert_cmpstr (domains->pdata[31], ==, "31.3.2.7.in-addr.arpa");
+
+	g_ptr_array_set_size (domains, 0);
+
+	inet_pton (AF_INET, "10.155.16.0", &addr);
+	nm_utils_get_reverse_dns_domains_ip4 (addr, 22, domains);
+	g_assert_cmpuint (domains->len, ==, 4);
+	g_assert_cmpstr (domains->pdata[0], ==, "16.155.10.in-addr.arpa");
+	g_assert_cmpstr (domains->pdata[1], ==, "17.155.10.in-addr.arpa");
+	g_assert_cmpstr (domains->pdata[2], ==, "18.155.10.in-addr.arpa");
+	g_assert_cmpstr (domains->pdata[3], ==, "19.155.10.in-addr.arpa");
+
+	g_ptr_array_set_size (domains, 0);
+
+	inet_pton (AF_INET, "4.5.6.7", &addr);
+	nm_utils_get_reverse_dns_domains_ip4 (addr, 32, domains);
+	g_assert_cmpuint (domains->len, ==, 1);
+	g_assert_cmpstr (domains->pdata[0], ==, "7.6.5.4.in-addr.arpa");
+
+	g_ptr_array_set_size (domains, 0);
+
+	inet_pton (AF_INET, "4.5.6.7", &addr);
+	nm_utils_get_reverse_dns_domains_ip4 (addr, 8, domains);
+	g_assert_cmpuint (domains->len, ==, 1);
+	g_assert_cmpstr (domains->pdata[0], ==, "4.in-addr.arpa");
+
+	g_ptr_array_set_size (domains, 0);
+
+	inet_pton (AF_INET, "4.180.6.7", &addr);
+	nm_utils_get_reverse_dns_domains_ip4 (addr, 9, domains);
+	g_assert_cmpuint (domains->len, ==, 128);
+	g_assert_cmpstr (domains->pdata[0], ==, "128.4.in-addr.arpa");
+	g_assert_cmpstr (domains->pdata[1], ==, "129.4.in-addr.arpa");
+	g_assert_cmpstr (domains->pdata[127], ==, "255.4.in-addr.arpa");
+
+	g_ptr_array_set_size (domains, 0);
+
+	inet_pton (AF_INET, "172.16.0.0", &addr);
+	nm_utils_get_reverse_dns_domains_ip4 (addr, 12, domains);
+	g_assert_cmpuint (domains->len, ==, 16);
+	g_assert_cmpstr (domains->pdata[0],  ==, "16.172.in-addr.arpa");
+	g_assert_cmpstr (domains->pdata[1],  ==, "17.172.in-addr.arpa");
+	g_assert_cmpstr (domains->pdata[14], ==, "30.172.in-addr.arpa");
+	g_assert_cmpstr (domains->pdata[15], ==, "31.172.in-addr.arpa");
+
+	g_ptr_array_set_size (domains, 0);
+
+	inet_pton (AF_INET, "1.2.3.4", &addr);
+	nm_utils_get_reverse_dns_domains_ip4 (addr, 0, domains);
+	g_assert_cmpuint (domains->len, ==, 0);
+
+	g_ptr_array_unref (domains);
+}
+
+static void
+test_reverse_dns_ip6 (void)
+{
+	struct in6_addr addr;
+	GPtrArray *domains = g_ptr_array_new_full (8, g_free);
+
+	inet_pton (AF_INET6, "1234::56", &addr);
+	nm_utils_get_reverse_dns_domains_ip6 (&addr, 16, domains);
+	g_assert_cmpuint (domains->len, ==, 1);
+	g_assert_cmpstr (domains->pdata[0], ==, "4.3.2.1.ip6.arpa");
+
+	g_ptr_array_set_size (domains, 0);
+
+	inet_pton (AF_INET6, "1234::56", &addr);
+	nm_utils_get_reverse_dns_domains_ip6 (&addr, 17, domains);
+	g_assert_cmpuint (domains->len, ==, 8);
+	g_assert_cmpstr (domains->pdata[0], ==, "0.4.3.2.1.ip6.arpa");
+	g_assert_cmpstr (domains->pdata[1], ==, "1.4.3.2.1.ip6.arpa");
+	g_assert_cmpstr (domains->pdata[7], ==, "7.4.3.2.1.ip6.arpa");
+
+	g_ptr_array_set_size (domains, 0);
+
+	inet_pton (AF_INET6, "2001:db8::", &addr);
+	nm_utils_get_reverse_dns_domains_ip6 (&addr, 29, domains);
+	g_assert_cmpuint (domains->len, ==, 8);
+	g_assert_cmpstr (domains->pdata[0], ==, "8.b.d.0.1.0.0.2.ip6.arpa");
+	g_assert_cmpstr (domains->pdata[1], ==, "9.b.d.0.1.0.0.2.ip6.arpa");
+	g_assert_cmpstr (domains->pdata[7], ==, "f.b.d.0.1.0.0.2.ip6.arpa");
+
+	g_ptr_array_set_size (domains, 0);
+
+	inet_pton (AF_INET6, "0123:4567:89ab:cdef::", &addr);
+	nm_utils_get_reverse_dns_domains_ip6 (&addr, 63, domains);
+	g_assert_cmpuint (domains->len, ==, 2);
+	g_assert_cmpstr (domains->pdata[0], ==, "e.e.d.c.b.a.9.8.7.6.5.4.3.2.1.0.ip6.arpa");
+	g_assert_cmpstr (domains->pdata[1], ==, "f.e.d.c.b.a.9.8.7.6.5.4.3.2.1.0.ip6.arpa");
+
+	g_ptr_array_set_size (domains, 0);
+
+	inet_pton (AF_INET6, "fec0:1234:5678:9ab0::", &addr);
+	nm_utils_get_reverse_dns_domains_ip6 (&addr, 61, domains);
+	g_assert_cmpuint (domains->len, ==, 8);
+	g_assert_cmpstr (domains->pdata[0], ==, "0.b.a.9.8.7.6.5.4.3.2.1.0.c.e.f.ip6.arpa");
+	g_assert_cmpstr (domains->pdata[7], ==, "7.b.a.9.8.7.6.5.4.3.2.1.0.c.e.f.ip6.arpa");
+
+	g_ptr_array_set_size (domains, 0);
+
+	inet_pton (AF_INET6, "0123:4567:89ab:cdee::", &addr);
+	nm_utils_get_reverse_dns_domains_ip6 (&addr, 0, domains);
+	g_assert_cmpuint (domains->len, ==, 0);
+
+	g_ptr_array_unref (domains);
+}
+
+/*****************************************************************************/
+
+static void
+do_test_stable_id_parse (const char *stable_id,
+                         NMUtilsStableType expected_stable_type,
+                         const char *expected_generated)
+{
+	gs_free char *generated = NULL;
+	NMUtilsStableType stable_type;
+
+	if (expected_stable_type == NM_UTILS_STABLE_TYPE_GENERATED)
+		g_assert (expected_generated);
+	else
+		g_assert (!expected_generated);
+
+	if (expected_stable_type == NM_UTILS_STABLE_TYPE_UUID)
+		g_assert (!stable_id);
+	else
+		g_assert (stable_id);
+
+	stable_type = nm_utils_stable_id_parse (stable_id, "_DEVICE", "_MAC", "_BOOT", "_CONNECTION", &generated);
+
+	g_assert_cmpint (expected_stable_type, ==, stable_type);
+
+	if (stable_type == NM_UTILS_STABLE_TYPE_GENERATED) {
+		g_assert_cmpstr (expected_generated, ==, generated);
+		g_assert (generated);
+	} else
+		g_assert (!generated);
+}
+
+static void
+test_stable_id_parse (void)
+{
+#define _parse_stable_id(stable_id)                     do_test_stable_id_parse (""stable_id"", NM_UTILS_STABLE_TYPE_STABLE_ID, NULL)
+#define _parse_generated(stable_id, expected_generated) do_test_stable_id_parse (""stable_id"", NM_UTILS_STABLE_TYPE_GENERATED, ""expected_generated"")
+#define _parse_random(stable_id)                        do_test_stable_id_parse (""stable_id"", NM_UTILS_STABLE_TYPE_RANDOM, NULL)
+	do_test_stable_id_parse (NULL, NM_UTILS_STABLE_TYPE_UUID, NULL);
+	_parse_stable_id ("");
+	_parse_stable_id ("a");
+	_parse_stable_id ("a$");
+	_parse_stable_id ("a$x");
+	_parse_stable_id (" ${a$x");
+	_parse_stable_id ("${");
+	_parse_stable_id ("${=");
+	_parse_stable_id ("${a");
+	_parse_stable_id ("${a$x");
+	_parse_stable_id ("a$$");
+	_parse_stable_id ("a$$x");
+	_parse_stable_id ("a$${CONNECTION}");
+	_parse_stable_id ("a$${CONNECTION}x");
+	_parse_generated ("${CONNECTION}", "${CONNECTION}=11{_CONNECTION}");
+	_parse_generated ("${${CONNECTION}", "${${CONNECTION}=11{_CONNECTION}");
+	_parse_generated ("${CONNECTION}x", "${CONNECTION}=11{_CONNECTION}x");
+	_parse_generated ("x${CONNECTION}", "x${CONNECTION}=11{_CONNECTION}");
+	_parse_generated ("${BOOT}x", "${BOOT}=5{_BOOT}x");
+	_parse_generated ("x${BOOT}", "x${BOOT}=5{_BOOT}");
+	_parse_generated ("x${BOOT}${CONNECTION}", "x${BOOT}=5{_BOOT}${CONNECTION}=11{_CONNECTION}");
+	_parse_generated ("xX${BOOT}yY${CONNECTION}zZ", "xX${BOOT}=5{_BOOT}yY${CONNECTION}=11{_CONNECTION}zZ");
+	_parse_generated ("${MAC}x", "${MAC}=4{_MAC}x");
+	_parse_random ("${RANDOM}");
+	_parse_random (" ${RANDOM}");
+	_parse_random ("${BOOT}${RANDOM}");
+}
+
+/*****************************************************************************/
+
+static void
+test_stable_id_generated_complete (void)
+{
+#define ASSERT(str, expected) \
+	G_STMT_START { \
+		gs_free char *_s = NULL; \
+		\
+		_s = nm_utils_stable_id_generated_complete ((str)); \
+		g_assert_cmpstr ((expected), ==, _s); \
+	} G_STMT_END
+
+	ASSERT ("", "2jmj7l5rSw0yVb/vlWAYkK/YBwk");
+	ASSERT ("a", "hvfkN/qlp/zhXR3cuerq6jd2Z7g");
+	ASSERT ("password", "W6ph5Mm5Pz8GgiULbPgzG37mj9g");
+#undef ASSERT
+}
+
+/*****************************************************************************/
+
+static void
+test_nm_utils_exp10 (void)
+{
+#define FLOAT_CMP(a, b) \
+	G_STMT_START { \
+		double _a = (a); \
+		double _b = (b); \
+		\
+		if (isinf (_b)) \
+			g_assert (isinf (_a)); \
+		else if (_b >= 0.0 && _b <= 0.0) \
+			g_assert (_a - _b < G_MINFLOAT); \
+		else { \
+			double _x = (_a) - (_b); \
+			g_assert (_b > 0.0); \
+			if (_x < 0.0) \
+				_x = -_x; \
+			g_assert (_x / _b <  1E-10); \
+		} \
+	} G_STMT_END
+
+	FLOAT_CMP (nm_utils_exp10 (G_MININT16),  0.0);
+	FLOAT_CMP (nm_utils_exp10 (-310),        0.0);
+	FLOAT_CMP (nm_utils_exp10 (-309),        0.0);
+	FLOAT_CMP (nm_utils_exp10 (-308),        1e-308);
+	FLOAT_CMP (nm_utils_exp10 (-307),        1e-307);
+	FLOAT_CMP (nm_utils_exp10 (-1),          1e-1);
+	FLOAT_CMP (nm_utils_exp10 (-2),          1e-2);
+	FLOAT_CMP (nm_utils_exp10 (0),           1e0);
+	FLOAT_CMP (nm_utils_exp10 (1),           1e1);
+	FLOAT_CMP (nm_utils_exp10 (2),           1e2);
+	FLOAT_CMP (nm_utils_exp10 (3),           1e3);
+	FLOAT_CMP (nm_utils_exp10 (4),           1e4);
+	FLOAT_CMP (nm_utils_exp10 (5),           1e5);
+	FLOAT_CMP (nm_utils_exp10 (6),           1e6);
+	FLOAT_CMP (nm_utils_exp10 (7),           1e7);
+	FLOAT_CMP (nm_utils_exp10 (122),         1e122);
+	FLOAT_CMP (nm_utils_exp10 (200),         1e200);
+	FLOAT_CMP (nm_utils_exp10 (307),         1e307);
+	FLOAT_CMP (nm_utils_exp10 (308),         1e308);
+	FLOAT_CMP (nm_utils_exp10 (309),         INFINITY);
+	FLOAT_CMP (nm_utils_exp10 (310),         INFINITY);
+	FLOAT_CMP (nm_utils_exp10 (G_MAXINT16),  INFINITY);
+}
+
+/*****************************************************************************/
+
+static void
+test_utils_file_is_in_path (void)
+{
+	g_assert (!nm_utils_file_is_in_path ("/", "/"));
+	g_assert (!nm_utils_file_is_in_path ("//", "/"));
+	g_assert (!nm_utils_file_is_in_path ("/a/", "/"));
+	g_assert ( nm_utils_file_is_in_path ("/a", "/"));
+	g_assert ( nm_utils_file_is_in_path ("///a", "/"));
+	g_assert ( nm_utils_file_is_in_path ("//b/a", "/b//"));
+	g_assert ( nm_utils_file_is_in_path ("//b///a", "/b//"));
+	g_assert (!nm_utils_file_is_in_path ("//b///a/", "/b//"));
+	g_assert (!nm_utils_file_is_in_path ("//b///a/", "/b/a/"));
+	g_assert (!nm_utils_file_is_in_path ("//b///a", "/b/a/"));
+	g_assert ( nm_utils_file_is_in_path ("//b///a/.", "/b/a/"));
+	g_assert ( nm_utils_file_is_in_path ("//b///a/..", "/b/a/"));
+}
+
+/*****************************************************************************/
+
+#define _TEST_RC(searches, nameservers, options, expected) \
+	G_STMT_START { \
+		const char *const*const _searches = (searches); \
+		const char *const*const _nameservers = (nameservers); \
+		const char *const*const _options = (options); \
+		gs_free char *_content = NULL; \
+		\
+		_content = nmtst_dns_create_resolv_conf (_searches, _nameservers, _options); \
+		g_assert_cmpstr (_content, ==, expected); \
+	} G_STMT_END
+
+static void
+test_dns_create_resolv_conf (void)
+{
+	_TEST_RC (NM_MAKE_STRV ("a"),
+	          NULL,
+	          NULL,
+	          "# Generated by NetworkManager\n"
+	          "search a\n"
+	          "");
+
+	_TEST_RC (NM_MAKE_STRV ("a", "b.com"),
+	          NM_MAKE_STRV ("192.168.55.1", "192.168.56.1"),
+	          NM_MAKE_STRV ("opt1", "opt2"),
+	          "# Generated by NetworkManager\n"
+	          "search a b.com\n"
+	          "nameserver 192.168.55.1\n"
+	          "nameserver 192.168.56.1\n"
+	          "options opt1 opt2\n"
+	          "");
+
+	_TEST_RC (NM_MAKE_STRV ("a2x456789.b2x456789.c2x456789.d2x456789.e2x456789.f2x456789.g2x456789.h2x456789.i2x456789.j2x4567890",
+	                        "a2y456789.b2y456789.c2y456789.d2y456789.e2y456789.f2y456789.g2y456789.h2y456789.i2y456789.j2y4567890",
+	                        "a2z456789.b2z456789.c2z456789.d2z456789.e2z456789.f2z456789.g2z456789.h2z456789.i2z456789.j2z4567890"),
+	          NULL,
+	          NULL,
+	          "# Generated by NetworkManager\n"
+	          "search a2x456789.b2x456789.c2x456789.d2x456789.e2x456789.f2x456789.g2x456789.h2x456789.i2x456789.j2x4567890 a2y456789.b2y456789.c2y456789.d2y456789.e2y456789.f2y456789.g2y456789.h2y456789.i2y456789.j2y4567890                                                        a2z456789.b2z456789.c2z456789.d2z456789.e2z456789.f2z456789.g2z456789.h2z456789.i2z456789.j2z4567890\n"
+	          "");
+
+}
+
+/*****************************************************************************/
+
+static void
+test_machine_id_read (void)
+{
+	NMUuid machine_id_sd;
+	const NMUuid *machine_id;
+	char machine_id_str[33];
+	gpointer logstate;
+
+	logstate = nmtst_logging_disable (FALSE);
+	/* If you run this test as root, without a valid /etc/machine-id,
+	 * the code will try to get the secret-key. That is a bit ugly,
+	 * but no real problem. */
+	machine_id = nm_utils_machine_id_bin ();
+	nmtst_logging_reenable (logstate);
+
+	g_assert (machine_id);
+	g_assert (nm_utils_bin2hexstr_full (machine_id,
+	                                    sizeof (NMUuid),
+	                                    '\0',
+	                                    FALSE,
+	                                    machine_id_str) == machine_id_str);
+	g_assert (strlen (machine_id_str) == 32);
+	g_assert_cmpstr (machine_id_str, ==, nm_utils_machine_id_str ());
+
+	/* double check with systemd's implementation... */
+	if (!nm_sd_utils_id128_get_machine (&machine_id_sd)) {
+		/* if systemd failed to read /etc/machine-id, the file likely
+		 * is invalid. Our machine-id is fake, and we have nothing to
+		 * compare against. */
+
+		/* NOTE: this test will fail, if you don't have /etc/machine-id,
+		 * but a valid "LOCALSTATEDIR/lib/dbus/machine-id" file.
+		 * Just don't do that. */
+		g_assert (nm_utils_machine_id_is_fake ());
+	} else {
+		g_assert (!nm_utils_machine_id_is_fake ());
+		g_assert_cmpmem (&machine_id_sd, sizeof (NMUuid), machine_id, 16);
+	}
+}
+
+/*****************************************************************************/
+
+static void
+test_nm_utils_dhcp_client_id_systemd_node_specific (gconstpointer test_data)
+{
+	const int TEST_IDX = GPOINTER_TO_INT (test_data);
+	const guint8 HASH_KEY[16] = { 0x80, 0x11, 0x8c, 0xc2, 0xfe, 0x4a, 0x03, 0xee, 0x3e, 0xd6, 0x0c, 0x6f, 0x36, 0x39, 0x14, 0x09 };
+	const guint16 duid_type_en = htons (2);
+	const guint32 systemd_pen = htonl (43793);
+	const struct {
+		NMUuid machine_id;
+		const char *ifname;
+		guint64 ifname_hash_1;
+		guint32 iaid_ifname;
+		guint64 duid_id;
+	} d_array[] = {
+		[0] = {
+			.machine_id.uuid = { 0xcb, 0xc2, 0x2e, 0x47, 0x41, 0x8e, 0x40, 0x2a, 0xa7, 0xb3, 0x0d, 0xea, 0x92, 0x83, 0x94, 0xef },
+			.ifname = "lo",
+			.ifname_hash_1 = 0x7297085c2b12c911llu,
+			.iaid_ifname = htobe32 (0x5985c14du),
+			.duid_id = htobe64 (0x3d769bb2c14d29e1u),
+		},
+		[1] = {
+			.machine_id.uuid = { 0x11, 0x4e, 0xb4, 0xda, 0xd3, 0x22, 0x4a, 0xff, 0x9f, 0xc3, 0x30, 0x83, 0x38, 0xa0, 0xeb, 0xb7 },
+			.ifname = "eth0",
+			.ifname_hash_1 = 0x9e1cb083b54cd7b6llu,
+			.iaid_ifname = htobe32 (0x2b506735u),
+			.duid_id = htobe64 (0x551572e0f2a2a10fu),
+		},
+	};
+	int i;
+	typeof (d_array[0]) *d = &d_array[TEST_IDX];
+	gint64 u64;
+	gint32 u32;
+
+	/* the test already hard-codes the expected values iaid_ifname and duid_id
+	 * above. Still, redo the steps to derive them from the ifname/machine-id
+	 * and double check. */
+	u64 = c_siphash_hash (HASH_KEY, (const guint8 *) d->ifname, strlen (d->ifname));
+	g_assert_cmpint (u64, ==, d->ifname_hash_1);
+	u32 = be32toh ((u64 & 0xffffffffu) ^ (u64 >> 32));
+	g_assert_cmpint (u32, ==, d->iaid_ifname);
+
+	u64 = htole64 (c_siphash_hash (HASH_KEY, (const guint8 *) &d->machine_id, sizeof (d->machine_id)));
+	g_assert_cmpint (u64, ==, d->duid_id);
+
+	for (i = 0; i < 2; i++) {
+		const gboolean legacy_unstable_byteorder = (i != 0);
+		gs_unref_bytes GBytes *client_id = NULL;
+		const guint8 *cid;
+		guint32 iaid = d->iaid_ifname;
+
+		client_id = nm_utils_dhcp_client_id_systemd_node_specific_full (legacy_unstable_byteorder,
+		                                                                (const guint8 *) d->ifname,
+		                                                                strlen (d->ifname),
+		                                                                (const guint8 *) &d->machine_id,
+		                                                                sizeof (d->machine_id));
+
+		g_assert (client_id);
+		g_assert_cmpint (g_bytes_get_size (client_id), ==, 19);
+		cid = g_bytes_get_data (client_id, NULL);
+		g_assert_cmpint (cid[0], ==, 255);
+#if __BYTE_ORDER == __BIG_ENDIAN
+		if (legacy_unstable_byteorder) {
+			/* on non-little endian, the legacy behavior is to have the bytes
+			 * swapped. */
+			iaid = bswap_32 (iaid);
+		}
+#endif
+		g_assert_cmpmem (&cid[1], 4, &iaid, sizeof (iaid));
+		g_assert_cmpmem (&cid[5], 2, &duid_type_en, sizeof (duid_type_en));
+		g_assert_cmpmem (&cid[7], 4, &systemd_pen, sizeof (systemd_pen));
+		g_assert_cmpmem (&cid[11], 8, &d->duid_id, sizeof (d->duid_id));
+
+		g_assert_cmpint (iaid, ==, htonl (nm_utils_create_dhcp_iaid (legacy_unstable_byteorder,
+		                                                             (const guint8 *) d->ifname,
+		                                                             strlen (d->ifname))));
+	}
+}
+
+/*****************************************************************************/
+
+static void
+test_connectivity_state_cmp (void)
+{
+	NMConnectivityState a;
+
+#define _cmp(a, b, cmp) \
+	G_STMT_START { \
+		const NMConnectivityState _a = (a); \
+		const NMConnectivityState _b = (b); \
+		const int _cmp = (cmp); \
+		\
+		g_assert (NM_IN_SET (_cmp, -1, 0, 1)); \
+		g_assert_cmpint (nm_connectivity_state_cmp (_a, _b), ==, _cmp); \
+		g_assert_cmpint (nm_connectivity_state_cmp (_b, _a), ==, -_cmp); \
+	} G_STMT_END
+
+	for (a = NM_CONNECTIVITY_UNKNOWN; a <= NM_CONNECTIVITY_FULL; a++)
+		_cmp (a, a, 0);
+
+	_cmp (NM_CONNECTIVITY_UNKNOWN, NM_CONNECTIVITY_UNKNOWN,  0);
+	_cmp (NM_CONNECTIVITY_UNKNOWN, NM_CONNECTIVITY_NONE,    -1);
+	_cmp (NM_CONNECTIVITY_UNKNOWN, NM_CONNECTIVITY_LIMITED, -1);
+	_cmp (NM_CONNECTIVITY_UNKNOWN, NM_CONNECTIVITY_PORTAL,  -1);
+	_cmp (NM_CONNECTIVITY_UNKNOWN, NM_CONNECTIVITY_FULL,    -1);
+
+	_cmp (NM_CONNECTIVITY_NONE,    NM_CONNECTIVITY_UNKNOWN,  1);
+	_cmp (NM_CONNECTIVITY_NONE,    NM_CONNECTIVITY_NONE,     0);
+	_cmp (NM_CONNECTIVITY_NONE,    NM_CONNECTIVITY_LIMITED, -1);
+	_cmp (NM_CONNECTIVITY_NONE,    NM_CONNECTIVITY_PORTAL,  -1);
+	_cmp (NM_CONNECTIVITY_NONE,    NM_CONNECTIVITY_FULL,    -1);
+
+	_cmp (NM_CONNECTIVITY_LIMITED, NM_CONNECTIVITY_UNKNOWN,  1);
+	_cmp (NM_CONNECTIVITY_LIMITED, NM_CONNECTIVITY_NONE,     1);
+	_cmp (NM_CONNECTIVITY_LIMITED, NM_CONNECTIVITY_LIMITED,  0);
+	_cmp (NM_CONNECTIVITY_LIMITED, NM_CONNECTIVITY_PORTAL,  -1);
+	_cmp (NM_CONNECTIVITY_LIMITED, NM_CONNECTIVITY_FULL,    -1);
+
+	_cmp (NM_CONNECTIVITY_PORTAL,  NM_CONNECTIVITY_UNKNOWN,  1);
+	_cmp (NM_CONNECTIVITY_PORTAL,  NM_CONNECTIVITY_NONE,     1);
+	_cmp (NM_CONNECTIVITY_PORTAL,  NM_CONNECTIVITY_LIMITED,  1);
+	_cmp (NM_CONNECTIVITY_PORTAL,  NM_CONNECTIVITY_PORTAL,   0);
+	_cmp (NM_CONNECTIVITY_PORTAL,  NM_CONNECTIVITY_FULL,    -1);
+
+	_cmp (NM_CONNECTIVITY_FULL,    NM_CONNECTIVITY_UNKNOWN,  1);
+	_cmp (NM_CONNECTIVITY_FULL,    NM_CONNECTIVITY_NONE,     1);
+	_cmp (NM_CONNECTIVITY_FULL,    NM_CONNECTIVITY_LIMITED,  1);
+	_cmp (NM_CONNECTIVITY_FULL,    NM_CONNECTIVITY_PORTAL,   1);
+	_cmp (NM_CONNECTIVITY_FULL,    NM_CONNECTIVITY_FULL,     0);
+
+#undef _cmp
+}
+
+/*****************************************************************************/
+
+NMTST_DEFINE ();
+
+int
+main (int argc, char **argv)
+{
+	nmtst_init_with_logging (&argc, &argv, NULL, "ALL");
+
+	g_test_add_func ("/general/test_logging_domains", test_logging_domains);
+
+	g_test_add_func ("/general/nm_utils_strbuf_append", test_nm_utils_strbuf_append);
+
+	g_test_add_func ("/general/nm_utils_ip6_address_clear_host_address", test_nm_utils_ip6_address_clear_host_address);
+	g_test_add_func ("/general/nm_utils_ip6_address_same_prefix", test_nm_utils_ip6_address_same_prefix);
+	g_test_add_func ("/general/nm_utils_log_connection_diff", test_nm_utils_log_connection_diff);
+
+	g_test_add_func ("/general/nm_utils_sysctl_ip_conf_path", test_nm_utils_sysctl_ip_conf_path);
+
+	g_test_add_func ("/general/exp10", test_nm_utils_exp10);
+
+	g_test_add_func ("/general/connection-match/basic", test_connection_match_basic);
+	g_test_add_func ("/general/connection-match/ip6-method", test_connection_match_ip6_method);
+	g_test_add_func ("/general/connection-match/ip6-method-ignore", test_connection_match_ip6_method_ignore);
+	g_test_add_func ("/general/connection-match/ip6-method-ignore-auto", test_connection_match_ip6_method_ignore_auto);
+	g_test_add_func ("/general/connection-match/ip4-method", test_connection_match_ip4_method);
+	g_test_add_func ("/general/connection-match/con-interface-name", test_connection_match_interface_name);
+	g_test_add_func ("/general/connection-match/wired", test_connection_match_wired);
+	g_test_add_func ("/general/connection-match/wired2", test_connection_match_wired2);
+	g_test_add_func ("/general/connection-match/cloned_mac", test_connection_match_cloned_mac);
+	g_test_add_func ("/general/connection-match/no-match-ip4-addr", test_connection_no_match_ip4_addr);
+	g_test_add_func ("/general/connection-match/no-match-vlan", test_connection_no_match_vlan);
+	g_test_add_func ("/general/connection-match/routes/ip4/1", test_connection_match_ip4_routes1);
+	g_test_add_func ("/general/connection-match/routes/ip4/2", test_connection_match_ip4_routes2);
+	g_test_add_func ("/general/connection-match/routes/ip6", test_connection_match_ip6_routes);
+
+	g_test_add_func ("/general/wildcard-match", test_wildcard_match);
+
+	g_test_add_func ("/general/connection-sort/autoconnect-priority", test_connection_sort_autoconnect_priority);
+
+	g_test_add_func ("/general/match-spec/device", test_match_spec_device);
+	g_test_add_func ("/general/match-spec/config", test_match_spec_config);
+	g_test_add_func ("/general/duplicate_decl_specifier", test_duplicate_decl_specifier);
+
+	g_test_add_func ("/general/reverse_dns/ip4", test_reverse_dns_ip4);
+	g_test_add_func ("/general/reverse_dns/ip6", test_reverse_dns_ip6);
+
+	g_test_add_func ("/general/stable-id/parse", test_stable_id_parse);
+	g_test_add_func ("/general/stable-id/generated-complete", test_stable_id_generated_complete);
+
+	g_test_add_func ("/general/machine-id/read", test_machine_id_read);
+
+	g_test_add_func ("/general/test_utils_file_is_in_path", test_utils_file_is_in_path);
+
+	g_test_add_func ("/general/test_dns_create_resolv_conf", test_dns_create_resolv_conf);
+
+	g_test_add_data_func ("/general/nm_utils_dhcp_client_id_systemd_node_specific/0", GINT_TO_POINTER (0), test_nm_utils_dhcp_client_id_systemd_node_specific);
+	g_test_add_data_func ("/general/nm_utils_dhcp_client_id_systemd_node_specific/1", GINT_TO_POINTER (1), test_nm_utils_dhcp_client_id_systemd_node_specific);
+
+	g_test_add_func ("/core/general/test_connectivity_state_cmp", test_connectivity_state_cmp);
+
+	return g_test_run ();
+}
+