tests: keep compiling failing vhost-user tests

Let's protect the failing tests under a QTEST_VHOST_USER_FIXME
environment variable, so we keep compiling the tests and we can easily
run them.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20180201132757.23063-6-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

tests/vhost-user-test.c

@@ -30,8 +30,6 @@
 #include <linux/virtio_net.h>
 #include <sys/vfs.h>
 
-#define VHOST_USER_NET_TESTS_WORKING 0 /* broken as of 2.10.0 */
-
 /* GLIB version compatibility flags */
 #if !GLIB_CHECK_VERSION(2, 26, 0)
 #define G_TIME_SPAN_SECOND              (G_GINT64_CONSTANT(1000000))
@@ -765,7 +763,7 @@ static void wait_for_rings_started(TestServer *s, size_t count)
     g_mutex_unlock(&s->data_mutex);
 }
 
-#if VHOST_USER_NET_TESTS_WORKING && defined(CONFIG_HAS_GLIB_SUBPROCESS_TESTS)
+#if defined(CONFIG_HAS_GLIB_SUBPROCESS_TESTS)
 static inline void test_server_connect(TestServer *server)
 {
     test_server_create_chr(server, ",reconnect=1");
@@ -956,16 +954,19 @@ int main(int argc, char **argv)
     qtest_add_func("/vhost-user/migrate", test_migrate);
     qtest_add_func("/vhost-user/multiqueue", test_multiqueue);
 
-#if VHOST_USER_NET_TESTS_WORKING && defined(CONFIG_HAS_GLIB_SUBPROCESS_TESTS)
-    qtest_add_func("/vhost-user/reconnect/subprocess",
-                   test_reconnect_subprocess);
-    qtest_add_func("/vhost-user/reconnect", test_reconnect);
-    qtest_add_func("/vhost-user/connect-fail/subprocess",
-                   test_connect_fail_subprocess);
-    qtest_add_func("/vhost-user/connect-fail", test_connect_fail);
-    qtest_add_func("/vhost-user/flags-mismatch/subprocess",
-                   test_flags_mismatch_subprocess);
-    qtest_add_func("/vhost-user/flags-mismatch", test_flags_mismatch);
+#if defined(CONFIG_HAS_GLIB_SUBPROCESS_TESTS)
+    /* keeps failing on build-system since Aug 15 2017 */
+    if (getenv("QTEST_VHOST_USER_FIXME")) {
+        qtest_add_func("/vhost-user/reconnect/subprocess",
+                       test_reconnect_subprocess);
+        qtest_add_func("/vhost-user/reconnect", test_reconnect);
+        qtest_add_func("/vhost-user/connect-fail/subprocess",
+                       test_connect_fail_subprocess);
+        qtest_add_func("/vhost-user/connect-fail", test_connect_fail);
+        qtest_add_func("/vhost-user/flags-mismatch/subprocess",
+                       test_flags_mismatch_subprocess);
+        qtest_add_func("/vhost-user/flags-mismatch", test_flags_mismatch);
+    }
 #endif
 
     ret = g_test_run();