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subprojects/gst-python/testsuite/old/test_interface.py

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+# -*- Mode: Python -*-
+# vi:si:et:sw=4:sts=4:ts=4
+#
+# gst-python - Python bindings for GStreamer
+# Copyright (C) 2002 David I. Lehn
+# Copyright (C) 2004 Johan Dahlin
+# Copyright (C) 2005 Edward Hervey
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+
+from common import gst, unittest, TestCase
+
+import gobject
+
+def find_mixer_element():
+    """ Searches for an element implementing the mixer interface """
+    allmix = [x for x in gst.registry_get_default().get_feature_list(gst.ElementFactory)
+              if x.has_interface("GstMixer") and x.has_interface("GstPropertyProbe")]
+    if allmix == []:
+        return None
+    return allmix[0]
+
+class Availability(TestCase):
+    def testXOverlay(self):
+        assert hasattr(gst.interfaces, 'XOverlay')
+        assert issubclass(gst.interfaces.XOverlay, gobject.GInterface)
+
+    def testMixer(self):
+        assert hasattr(gst.interfaces, 'Mixer')
+        assert issubclass(gst.interfaces.Mixer, gobject.GInterface)
+
+class FunctionCall(TestCase):
+    def FIXME_testXOverlay(self):
+        # obviously a testsuite is not allowed to instantiate this
+        # since it needs a running X or will fail.  find some way to
+        # deal with that.
+        element = gst.element_factory_make('xvimagesink')
+        assert isinstance(element, gst.Element)
+        assert isinstance(element, gst.interfaces.XOverlay)
+        element.set_xwindow_id(0L)
+
+class MixerTest(TestCase):
+    def setUp(self):
+        TestCase.setUp(self)
+        amix = find_mixer_element()
+        if amix:
+            self.mixer = amix.create()
+        else:
+            self.mixer = None
+
+    def tearDown(self):
+        del self.mixer
+        TestCase.tearDown(self)
+
+    def testGetProperty(self):
+        if self.mixer == None:
+            return
+        self.failUnless(self.mixer.probe_get_property('device'))
+        self.assertRaises(ValueError,
+                          self.mixer.probe_get_property, 'non-existent')
+
+    def testGetProperties(self):
+        if self.mixer == None:
+            return
+        properties = self.mixer.probe_get_properties()
+        self.failUnless(properties)
+        self.assertEqual(type(properties), list)
+        prop = properties[0]
+        self.assertEqual(prop.name, 'device')
+        self.assertEqual(prop.value_type, gobject.TYPE_STRING)
+
+    def testGetValuesName(self):
+        if self.mixer == None:
+            return
+        values = self.mixer.probe_get_values_name('device')
+        self.assertEqual(type(values), list)
+
+
+if __name__ == "__main__":
+    unittest.main()