diff options
Diffstat (limited to 'core/fxge/skia/fx_skia_device_unittest.cpp')
-rw-r--r-- | core/fxge/skia/fx_skia_device_unittest.cpp | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/core/fxge/skia/fx_skia_device_unittest.cpp b/core/fxge/skia/fx_skia_device_unittest.cpp new file mode 100644 index 0000000000..57a4ec140b --- /dev/null +++ b/core/fxge/skia/fx_skia_device_unittest.cpp @@ -0,0 +1,31 @@ +// Copyright 2016 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "core/fxge/skia/fx_skia_device.cpp" +#include "testing/fx_string_testhelpers.h" +#include "testing/gtest/include/gtest/gtest.h" + +namespace { + +uint32_t _GetBits32(const uint8_t* pData, int bitpos, int nbits) { + int result = 0; + for (int i = 0; i < nbits; i++) + if (pData[(bitpos + i) / 8] & (1 << (7 - (bitpos + i) % 8))) { + result |= 1 << (nbits - i - 1); + } + return result; +} + +} // namespace + +TEST(fxge, GetBits32) { + unsigned char data[] = {0xDE, 0x3F, 0xB1, 0x7C, 0x12, 0x9A, 0x04, 0x56}; + for (int nbits = 1; nbits <= 32; ++nbits) { + for (int bitpos = 0; bitpos < (int)sizeof(data) * 8 - nbits; ++bitpos) { + uint32_t ref = _GetBits32(data, bitpos, nbits); + uint32_t test = GetBits32(data, bitpos, nbits); + EXPECT_TRUE(ref == test); + } + } +} |