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

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+# -*- Mode: Python -*-
+# vi:si:et:sw=4:sts=4:ts=4
+#
+# Copyright (C) 2005 Johan Dahlin
+#
+# 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
+
+import unittest
+from common import gst, TestCase
+
+class IteratorTest(TestCase):
+    # XXX: Elements
+    def testBinIterateElements(self):
+        pipeline = gst.parse_launch("fakesrc name=src ! fakesink name=sink")
+        elements = list(pipeline.elements())
+        fakesrc = pipeline.get_by_name("src")
+        fakesink = pipeline.get_by_name("sink")
+        
+        self.assertEqual(len(elements), 2)
+        self.failUnless(fakesrc in elements)
+        self.failUnless(fakesink in elements)
+
+        pipeline.remove(fakesrc)
+        elements = list(pipeline.elements())
+
+        self.assertEqual(len(elements), 1)
+        self.failUnless(not fakesrc in pipeline)
+
+        # XXX : There seems to be a problem about the GType
+        #       set in gst_bin_iterated_sorted
+
+    def testBinIterateSorted(self):
+        pipeline =  gst.parse_launch("fakesrc name=src ! fakesink name=sink")
+        elements = list(pipeline.sorted())
+        fakesrc = pipeline.get_by_name("src")
+        fakesink = pipeline.get_by_name("sink")
+
+        self.assertEqual(elements[0], fakesink)
+        self.assertEqual(elements[1], fakesrc)
+
+    def testBinIterateRecurse(self):
+        pipeline = gst.parse_launch("fakesrc name=src ! fakesink name=sink")
+        elements = list(pipeline.recurse())
+        fakesrc = pipeline.get_by_name("src")
+        fakesink = pipeline.get_by_name("sink")
+
+        self.assertEqual(elements[0], fakesink)
+        self.assertEqual(elements[1], fakesrc)
+
+    def testBinIterateSinks(self):
+        pipeline = gst.parse_launch("fakesrc name=src ! fakesink name=sink")
+        elements = list(pipeline.sinks())
+        fakesrc = pipeline.get_by_name("src")
+        fakesink = pipeline.get_by_name("sink")
+
+        self.assertEqual(len(elements), 1)
+        self.failUnless(fakesink in elements)
+        self.failUnless(not fakesrc in elements)
+
+    
+    def testIteratePadsFakeSrc(self):
+        fakesrc = gst.element_factory_make('fakesrc')
+        pads = list(fakesrc.pads())
+        srcpad = fakesrc.get_pad('src')
+        self.assertEqual(len(pads), 1)
+        self.assertEqual(pads[0], srcpad)
+        srcpads = list(fakesrc.src_pads())
+        self.assertEqual(len(srcpads), 1)
+        self.assertEqual(srcpads[0], srcpad)
+        sinkpads = list(fakesrc.sink_pads())
+        self.assertEqual(sinkpads, [])
+
+        self.assertEqual(len(list(fakesrc)), 1)
+        for pad in fakesrc:
+            self.assertEqual(pad, srcpad)
+            break
+        else:
+            raise AssertionError
+        
+    def testIteratePadsFakeSink(self):
+        fakesink = gst.element_factory_make('fakesink')
+        pads = list(fakesink.pads())
+        sinkpad = fakesink.get_pad('sink')
+        self.assertEqual(len(pads), 1)
+        self.assertEqual(pads[0], sinkpad)
+        srcpads = list(fakesink.src_pads())
+        self.assertEqual(srcpads, [])
+        sinkpads = list(fakesink.sink_pads())
+        self.assertEqual(len(sinkpads), 1)
+        self.assertEqual(sinkpads[0], sinkpad)
+
+        self.assertEqual(len(list(fakesink)), 1)
+        for pad in fakesink:
+            self.assertEqual(pad, sinkpad)
+            break
+        else:
+            raise AssertionError
+
+    def testInvalidIterator(self):
+        p = gst.Pad("p", gst.PAD_SRC)
+        # The C function will return NULL, we should
+        # therefore have an exception raised
+        self.assertRaises(TypeError, p.iterate_internal_links)
+        del p
+