tests: mfvideosrc: Add unit test

Simple test for reuse scenario

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/760>

tests/check/elements/mfvideosrc.c

@@ -0,0 +1,111 @@
+/* GStreamer
+ *
+ * Copyright (C) 2020 Seungha Yang <seungha@centricular.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+#include <gst/check/gstcheck.h>
+
+GST_START_TEST (test_mf_video_src_reuse)
+{
+  GstElement *pipeline;
+  GstStateChangeReturn ret;
+  GstBus *bus;
+  GstMessage *msg;
+
+  pipeline = gst_parse_launch ("mfvideosrc ! fakevideosink name=sink", NULL);
+  fail_unless (pipeline != NULL);
+
+  bus = gst_element_get_bus (GST_ELEMENT (pipeline));
+  fail_unless (bus != NULL);
+
+  GST_INFO ("Set state playing");
+  ret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
+  msg = gst_bus_poll (bus, GST_MESSAGE_ASYNC_DONE | GST_MESSAGE_ERROR, -1);
+  fail_unless (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_ASYNC_DONE);
+  gst_message_unref (msg);
+
+  GST_INFO ("Set state ready");
+  ret = gst_element_set_state (pipeline, GST_STATE_READY);
+  fail_unless (ret == GST_STATE_CHANGE_SUCCESS);
+
+  GST_INFO ("Set state playing again");
+  ret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
+  msg = gst_bus_poll (bus, GST_MESSAGE_ASYNC_DONE | GST_MESSAGE_ERROR, -1);
+  fail_unless (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_ASYNC_DONE);
+  gst_message_unref (msg);
+
+  ret = gst_element_set_state (pipeline, GST_STATE_NULL);
+  fail_unless (ret == GST_STATE_CHANGE_SUCCESS);
+
+  gst_object_unref (bus);
+  gst_object_unref (pipeline);
+}
+
+GST_END_TEST;
+
+static gboolean
+check_mf_available (void)
+{
+  gboolean ret = TRUE;
+  GstElement *mfvideosrc;
+
+  mfvideosrc = gst_element_factory_make ("mfvideosrc", NULL);
+  if (!mfvideosrc) {
+    GST_INFO ("nvh264dec is not available");
+    return FALSE;
+  }
+
+  /* GST_STATE_READY is meaning that camera is available */
+  if (gst_element_set_state (mfvideosrc,
+          GST_STATE_READY) != GST_STATE_CHANGE_SUCCESS) {
+    GST_INFO ("cannot open device");
+    ret = FALSE;
+  }
+
+  gst_element_set_state (mfvideosrc, GST_STATE_NULL);
+  gst_object_unref (mfvideosrc);
+
+  return ret;
+}
+
+static Suite *
+mfvideosrc_suite (void)
+{
+  Suite *s = suite_create ("mfvideosrc");
+  TCase *tc_basic = tcase_create ("general");
+  gboolean have_mf = FALSE;
+
+  suite_add_tcase (s, tc_basic);
+
+  have_mf = check_mf_available ();
+
+  if (have_mf) {
+    tcase_add_test (tc_basic, test_mf_video_src_reuse);
+  } else {
+    GST_INFO ("Skipping tests, media foundation plugin is unavailable");
+  }
+
+  return s;
+}
+
+GST_CHECK_MAIN (mfvideosrc);

tests/check/meson.build

@@ -34,6 +34,7 @@ base_tests = [
   [['elements/hlsdemux_m3u8.c'], not hls_dep.found(), [hls_dep]],
   [['elements/id3mux.c']],
   [['elements/jpeg2000parse.c'], false, [libparser_dep, gstcodecparsers_dep]],
+  [['elements/mfvideosrc.c'], host_machine.system() != 'windows', ],
   [['elements/mpegtsmux.c'], false, [gstmpegts_dep]],
   [['elements/mpeg4videoparse.c'], false, [libparser_dep, gstcodecparsers_dep]],
   [['elements/mpegvideoparse.c'], false, [libparser_dep, gstcodecparsers_dep]],