1 files changed, 65 insertions, 0 deletions
diff --git a/test/common/bufferedseekablereadstream.h b/test/common/bufferedseekablereadstream.h
new file mode 100644
index 0000000000..63941904cd
--- /dev/null
+++ b/test/common/bufferedseekablereadstream.h
@@ -0,0 +1,65 @@
+#include <cxxtest/TestSuite.h>
+
+#include "common/stream.h"
+
+class BufferedSeekableReadStreamTestSuite : public CxxTest::TestSuite {
+	public:
+	void test_traverse(void) {
+		byte contents[10] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+		Common::MemoryReadStream ms(contents, 10);
+
+		Common::BufferedSeekableReadStream ssrs(&ms, 4);
+
+		int i;
+		byte b;
+		for (i = 0; i < 10; ++i) {
+			TS_ASSERT( !ssrs.eos() );
+
+			TS_ASSERT_EQUALS( i, ssrs.pos() );
+
+			ssrs.read(&b, 1);
+			TS_ASSERT_EQUALS( i, b );
+		}
+
+		TS_ASSERT( ssrs.eos() );
+	}
+
+	void test_seek(void) {
+		byte contents[10] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+		Common::MemoryReadStream ms(contents, 10);
+
+		Common::BufferedSeekableReadStream ssrs(&ms, 4);
+		byte b;
+
+		TS_ASSERT_EQUALS( ssrs.pos(), (uint32)0 );
+
+		ssrs.seek(1, SEEK_SET);
+		TS_ASSERT_EQUALS( ssrs.pos(), (uint32)1 );
+		b = ssrs.readByte();
+		TS_ASSERT_EQUALS( b, 1 );
+
+		ssrs.seek(5, SEEK_CUR);
+		TS_ASSERT_EQUALS( ssrs.pos(), (uint32)7 );
+		b = ssrs.readByte();
+		TS_ASSERT_EQUALS( b, 7 );
+
+		ssrs.seek(-3, SEEK_CUR);
+		TS_ASSERT_EQUALS( ssrs.pos(), (uint32)5 );
+		b = ssrs.readByte();
+		TS_ASSERT_EQUALS( b, 5 );
+
+		ssrs.seek(0, SEEK_END);
+		TS_ASSERT_EQUALS( ssrs.pos(), (uint32)10 );
+		TS_ASSERT( ssrs.eos() );
+
+		ssrs.seek(3, SEEK_END);
+		TS_ASSERT_EQUALS( ssrs.pos(), (uint32)7 );
+		b = ssrs.readByte();
+		TS_ASSERT_EQUALS( b, 7 );
+
+		ssrs.seek(8, SEEK_END);
+		TS_ASSERT_EQUALS( ssrs.pos(), (uint32)2 );
+		b = ssrs.readByte();
+		TS_ASSERT_EQUALS( b, 2 );
+	}
+};