private unsafe void TestComparisons(string heapValue, int offset, string value, bool unicode = false) { byte[] heap; fixed(byte *heapPtr = (heap = Encoding.UTF8.GetBytes(heapValue))) { var block = new MemoryBlock(heapPtr, heap.Length); string heapSubstr = GetStringHeapValue(heapValue, offset); // compare: if (!unicode) { int actualCmp = block.CompareUtf8NullTerminatedStringWithAsciiString(offset, value); int expectedCmp = StringComparer.Ordinal.Compare(heapSubstr, value); Assert.Equal(Math.Sign(expectedCmp), Math.Sign(actualCmp)); } // equals: bool actualEq = block.Utf8NullTerminatedEquals(offset, value); bool expectedEq = StringComparer.Ordinal.Equals(heapSubstr, value); Assert.Equal(expectedEq, actualEq); // starts with: bool actualSW = block.Utf8NullTerminatedStartsWith(offset, value); bool expectedSW = heapSubstr.StartsWith(value, StringComparison.Ordinal); Assert.Equal(actualSW, expectedSW); } }
private unsafe void TestComparisons(string heapValue, int offset, string value, bool unicode = false, bool ignoreCase = false) { byte[] heap; MetadataStringDecoder decoder = MetadataStringDecoder.DefaultUTF8; fixed(byte *heapPtr = (heap = Encoding.UTF8.GetBytes(heapValue))) { var block = new MemoryBlock(heapPtr, heap.Length); string heapSubstr = GetStringHeapValue(heapValue, offset); // compare: if (!unicode) { int actualCmp = block.CompareUtf8NullTerminatedStringWithAsciiString(offset, value); int expectedCmp = StringComparer.Ordinal.Compare(heapSubstr, value); Assert.Equal(Math.Sign(expectedCmp), Math.Sign(actualCmp)); } if (!ignoreCase) { TestComparison(block, offset, value, heapSubstr, decoder, ignoreCase: true); } TestComparison(block, offset, value, heapSubstr, decoder, ignoreCase); } }