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#include <cxxtest/TestSuite.h>
#include "common/stream.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( 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 );
}
};
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