Initial commit

test/common/seekablesubreadstream.h

@@ -0,0 +1,73 @@
+#include <cxxtest/TestSuite.h>
+
+#include "common/memstream.h"
+#include "common/substream.h"
+
+class SeekableSubReadStreamTestSuite : public CxxTest::TestSuite {
+	public:
+	void test_traverse() {
+		byte contents[10] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+		Common::MemoryReadStream ms(contents, 10);
+
+		int start = 2, end = 8;
+
+		Common::SeekableSubReadStream ssrs(&ms, start, end);
+
+		int i;
+		byte b;
+		for (i = start; i < end; ++i) {
+			TS_ASSERT(!ssrs.eos());
+
+			TS_ASSERT_EQUALS(i - start, ssrs.pos());
+
+			ssrs.read(&b, 1);
+			TS_ASSERT_EQUALS(i, b);
+		}
+
+		TS_ASSERT(!ssrs.eos());
+		TS_ASSERT_EQUALS((uint)0, ssrs.read(&b, 1));
+		TS_ASSERT(ssrs.eos());
+	}
+
+	void test_seek() {
+		byte contents[10] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+		Common::MemoryReadStream ms(contents, 10);
+
+		Common::SeekableSubReadStream ssrs(&ms, 1, 9);
+		byte b;
+
+		TS_ASSERT_EQUALS(ssrs.pos(), 0);
+
+		ssrs.seek(1, SEEK_SET);
+		TS_ASSERT_EQUALS(ssrs.pos(), 1);
+		b = ssrs.readByte();
+		TS_ASSERT_EQUALS(b, 2);
+
+		ssrs.seek(5, SEEK_CUR);
+		TS_ASSERT_EQUALS(ssrs.pos(), 7);
+		b = ssrs.readByte();
+		TS_ASSERT_EQUALS(b, 8);
+
+		ssrs.seek(-3, SEEK_CUR);
+		TS_ASSERT_EQUALS(ssrs.pos(), 5);
+		b = ssrs.readByte();
+		TS_ASSERT_EQUALS(b, 6);
+
+		ssrs.seek(0, SEEK_END);
+		TS_ASSERT_EQUALS(ssrs.pos(), 8);
+		TS_ASSERT(!ssrs.eos());
+		b = ssrs.readByte();
+		TS_ASSERT(ssrs.eos());
+
+		ssrs.seek(-3, SEEK_END);
+		TS_ASSERT(!ssrs.eos());
+		TS_ASSERT_EQUALS(ssrs.pos(), 5);
+		b = ssrs.readByte();
+		TS_ASSERT_EQUALS(b, 6);
+
+		ssrs.seek(-8, SEEK_END);
+		TS_ASSERT_EQUALS(ssrs.pos(), 0);
+		b = ssrs.readByte();
+		TS_ASSERT_EQUALS(b, 1);
+	}
+};