Added test for ringbuffer.cpp

1 files changed, 181 insertions, 0 deletions

diff --git a/test/base/ringbuffer.cpp b/test/base/ringbuffer.cpp
new file mode 100644
index 00000000..99631108
--- /dev/null
+++ b/test/base/ringbuffer.cpp
@@ -0,0 +1,181 @@
+/*
+ * UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ */
+
+#include "ringbuffer.hpp"
+#include <cstring>
+#include <cppunit/extensions/HelperMacros.h>
+
+namespace usdx
+{
+	class RingBufferTest : public CppUnit::TestFixture {
+		CPPUNIT_TEST_SUITE(RingBufferTest);
+		CPPUNIT_TEST(testReadNullBuffer);
+		CPPUNIT_TEST(testReadNegativeCount);
+		CPPUNIT_TEST(testReadEmptyRingBuffer);
+		CPPUNIT_TEST(testWriteNullBuffer);
+		CPPUNIT_TEST(testWriteNegativeCount);
+		CPPUNIT_TEST(testWriteOverflow);
+		CPPUNIT_TEST(testWriteOverflow2);
+		CPPUNIT_TEST(testWriteRead);
+		CPPUNIT_TEST(testReadMoreThanAvailable);
+		CPPUNIT_TEST(testCurrentSize);
+		CPPUNIT_TEST(testCurrentAvailable);
+		CPPUNIT_TEST(testFlush);
+		CPPUNIT_TEST_SUITE_END();
+	private:
+		RingBuffer *rbuff;
+	public:
+		void setUp()
+		{
+			rbuff = new RingBuffer(10);
+		
+		}
+
+		void tearDown()
+		{
+			delete rbuff;
+		}
+
+		// check if the read function reports an error in form of a 
+		// negative value when the given buffer is NULL
+		void testReadNullBuffer()
+		{
+			CPPUNIT_ASSERT( -1 == rbuff->read(NULL,10) );
+		}
+
+		// check if the read function reports an error in form of a
+		// negative value when the given count is negative
+		void testReadNegativeCount()
+		{
+			char buffer[10];
+			CPPUNIT_ASSERT( -1 == rbuff->read(buffer,-1) );
+		}
+
+		// check the returnvalue when reading on a empty ringbuffer
+		void testReadEmptyRingBuffer()
+		{
+			char buffer[10];
+			CPPUNIT_ASSERT( 0 == rbuff->read(buffer,10) );
+		}
+
+		// check in the read function reports an error in form of a 
+		// negative value when the given buffer is NULL
+		void testWriteNullBuffer()
+		{
+			CPPUNIT_ASSERT( -1 == rbuff->write(NULL,10) );
+		}
+
+		// check if the read function reports an error in form of a
+		// negative value when the given count is negative
+		void testWriteNegativeCount()
+		{
+			char buffer[10];
+			CPPUNIT_ASSERT( -1 == rbuff->write(buffer,-1) );
+		}
+
+		// checks the retrunvalue when writeing over the limits of a
+		// ringbuffer
+		void testWriteOverflow()
+		{
+			char buffer[20];
+			CPPUNIT_ASSERT( 0 == rbuff->read(buffer,20) );
+		}
+
+		// check if the read value is ajusted correctly, when
+		// a buffer overflow happens
+		void testWriteOverflow2()
+		{
+			char w1Buffer[4]="AAA";
+			char w2Buffer[4]="BBB";
+			char rBuffer[7]="CCCCCC";
+			CPPUNIT_ASSERT( 3 == rbuff->write(w1Buffer,3) );
+			CPPUNIT_ASSERT( 3 == rbuff->write(w1Buffer,3) );
+			CPPUNIT_ASSERT( 3 == rbuff->write(w1Buffer,3) );
+			CPPUNIT_ASSERT( 4 == rbuff->write(w2Buffer,4) );
+			CPPUNIT_ASSERT( 6 == rbuff->read(rBuffer,6) );
+			CPPUNIT_ASSERT( 0 == strcmp("AAAAAA",rBuffer) );
+		}
+
+		// check if inputdata equals outputdata
+		void testWriteRead()
+		{
+			char w1Buffer[4]="AAA";
+			char w2Buffer[4]="BBB";
+			char rBuffer[7]="CCCCCC";
+			CPPUNIT_ASSERT( 3 == rbuff->write(w1Buffer,3) );
+			CPPUNIT_ASSERT( 4 == rbuff->write(w2Buffer,4) );
+			CPPUNIT_ASSERT( 7 == rbuff->read(rBuffer,7) );
+			CPPUNIT_ASSERT( 0 == strcmp("AAABBB",rBuffer) );
+		}
+
+		// check what happens when read trys to read more data than
+		// available
+		void testReadMoreThanAvailable()
+		{
+			char wBuffer[4]="AAA";
+			char rBuffer[5]="BBBB";
+			CPPUNIT_ASSERT( 4 == rbuff->write(wBuffer,4) );
+			CPPUNIT_ASSERT( 4 == rbuff->read(rBuffer,5) );
+			CPPUNIT_ASSERT( 0 == strcmp("AAA",rBuffer) );
+		}
+
+		// check if the correct ringbuffer size is reported
+		void testCurrentSize()
+		{
+			char w1Buffer[4]="AAA";
+			char w2Buffer[5]="BBBB";
+			CPPUNIT_ASSERT( 4 == rbuff->write(w1Buffer,4) );
+			CPPUNIT_ASSERT( 5 == rbuff->write(w2Buffer,5) );
+			CPPUNIT_ASSERT( 10 == rbuff->get_size() );
+		}
+
+		// check if the available space in the ringbuffer
+		void testCurrentAvailable()
+		{
+			char w1Buffer[4]="AAA";
+			char w2Buffer[5]="BBBB";
+			CPPUNIT_ASSERT( 4 == rbuff->write(w1Buffer,4) );
+			CPPUNIT_ASSERT( 5 == rbuff->write(w2Buffer,5) );
+			CPPUNIT_ASSERT( 9 == rbuff->get_available() );
+		}
+		
+		// check if the flush function clears the buffer correctly
+		void testFlush()
+		{
+			char w1Buffer[4]="AAA";
+			char w2Buffer[4]="BBB";
+			char rBuffer[4]="CCC";
+			CPPUNIT_ASSERT( 4 == rbuff->write(w1Buffer,4) );
+			rbuff->flush();
+			CPPUNIT_ASSERT( 4 == rbuff->write(w2Buffer,4) );
+			CPPUNIT_ASSERT( 4 == rbuff->read(rBuffer,4) );
+			CPPUNIT_ASSERT( 0 == strcmp("BBB",rBuffer) );
+		}
+
+	};
+
+	CPPUNIT_TEST_SUITE_REGISTRATION(RingBufferTest);
+};