1 files changed, 128 insertions, 0 deletions
diff --git a/libs/audiographer/tests/general/interleaver_test.cc b/libs/audiographer/tests/general/interleaver_test.cc
new file mode 100644
index 0000000000..1512d054fc
--- /dev/null
+++ b/libs/audiographer/tests/general/interleaver_test.cc
@@ -0,0 +1,128 @@
+#include "tests/utils.h"
+
+#include "audiographer/general/interleaver.h"
+
+using namespace AudioGrapher;
+
+class InterleaverTest : public CppUnit::TestFixture
+{
+  CPPUNIT_TEST_SUITE (InterleaverTest);
+  CPPUNIT_TEST (testUninitialized);
+  CPPUNIT_TEST (testInvalidInputIndex);
+  CPPUNIT_TEST (testInvalidInputSize);
+  CPPUNIT_TEST (testOutputSize);
+  CPPUNIT_TEST (testZeroInput);
+  CPPUNIT_TEST (testChannelSync);
+  CPPUNIT_TEST_SUITE_END ();
+
+  public:
+	void setUp()
+	{
+		channels = 3;
+		frames = 128;
+		random_data = TestUtils::init_random_data (frames, 1.0);
+
+		interleaver.reset (new Interleaver<float>());
+		sink.reset (new VectorSink<float>());
+		
+		interleaver->init (channels, frames);
+	}
+
+	void tearDown()
+	{
+		delete [] random_data;
+	}
+
+	void testUninitialized()
+	{
+		interleaver.reset (new Interleaver<float>());
+		ProcessContext<float> c (random_data, frames, 1);
+		CPPUNIT_ASSERT_THROW (interleaver->input(0)->process (c), Exception);
+	}
+
+	void testInvalidInputIndex()
+	{
+		ProcessContext<float> c (random_data, frames, 1);
+		CPPUNIT_ASSERT_THROW (interleaver->input (3)->process (c), Exception);
+	}
+
+	void testInvalidInputSize()
+	{
+		ProcessContext<float> c (random_data, frames + 1, 1);
+		CPPUNIT_ASSERT_THROW (interleaver->input (0)->process (c), Exception);
+		
+		interleaver->input (0)->process (c.beginning (frames));
+		interleaver->input (1)->process (c.beginning (frames));
+		CPPUNIT_ASSERT_THROW (interleaver->input (2)->process (c.beginning (frames - 1)), Exception);
+
+		interleaver->input (0)->process (c.beginning (frames - 1));
+		interleaver->input (1)->process (c.beginning (frames - 1));
+		CPPUNIT_ASSERT_THROW (interleaver->input (2)->process (c.beginning (frames)), Exception);
+	}
+
+	void testOutputSize()
+	{
+		interleaver->add_output (sink);
+
+		ProcessContext<float> c (random_data, frames, 1);
+		interleaver->input (0)->process (c);
+		interleaver->input (1)->process (c);
+		interleaver->input (2)->process (c);
+
+		nframes_t expected_frames = frames * channels;
+		nframes_t generated_frames = sink->get_data().size();
+		CPPUNIT_ASSERT_EQUAL (expected_frames, generated_frames);
+
+		nframes_t less_frames = frames / 2;
+		interleaver->input (0)->process (c.beginning (less_frames));
+		interleaver->input (1)->process (c.beginning (less_frames));
+		interleaver->input (2)->process (c.beginning (less_frames));
+
+		expected_frames = less_frames * channels;
+		generated_frames = sink->get_data().size();
+		CPPUNIT_ASSERT_EQUAL (expected_frames, generated_frames);
+	}
+
+	void testZeroInput()
+	{
+		interleaver->add_output (sink);
+
+		// input zero frames to all inputs
+		ProcessContext<float> c (random_data, frames, 1);
+		interleaver->input (0)->process (c.beginning (0));
+		interleaver->input (1)->process (c.beginning (0));
+		interleaver->input (2)->process (c.beginning (0));
+		
+		// NOTE zero input is allowed to be a NOP
+		
+		// ...now test regular input
+		interleaver->input (0)->process (c);
+		interleaver->input (1)->process (c);
+		interleaver->input (2)->process (c);
+
+		nframes_t expected_frames = frames * channels;
+		nframes_t generated_frames = sink->get_data().size();
+		CPPUNIT_ASSERT_EQUAL (expected_frames, generated_frames);
+	}
+
+	void testChannelSync()
+	{
+		interleaver->add_output (sink);
+		ProcessContext<float> c (random_data, frames, 1);
+		interleaver->input (0)->process (c);
+		CPPUNIT_ASSERT_THROW (interleaver->input (0)->process (c), Exception);		
+	}
+
+
+  private:
+	boost::shared_ptr<Interleaver<float> > interleaver;
+
+	boost::shared_ptr<VectorSink<float> > sink;
+
+	nframes_t channels;
+	float * random_data;
+	nframes_t frames;
+};
+
+CPPUNIT_TEST_SUITE_REGISTRATION (InterleaverTest);
+