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// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef WEBKIT_TOOLS_TEST_SHELL_IMAGE_DECODER_UNITTEST_H_
#define WEBKIT_TOOLS_TEST_SHELL_IMAGE_DECODER_UNITTEST_H_
#include <string>
#include <vector>
#include "Vector.h"
#include "ImageDecoder.h"
#undef LOG
#include "base/basictypes.h"
#include "base/file_path.h"
#include "testing/gtest/include/gtest/gtest.h"
// If CALCULATE_MD5_SUMS is not defined, then this test decodes a handful of
// image files and compares their MD5 sums to the stored sums on disk.
//
// To recalculate the MD5 sums, uncommment CALCULATE_MD5_SUMS.
//
// The image files and corresponding MD5 sums live in the directory
// chrome/test/data/*_decoder (where "*" is the format being tested).
//
// Note: The MD5 sums calculated in this test by little- and big-endian systems
// will differ, since no endianness correction is done. If we start compiling
// for big endian machines this should be fixed.
//#define CALCULATE_MD5_SUMS
enum ImageDecoderTestFileSelection {
TEST_ALL,
TEST_SMALLER,
TEST_BIGGER,
};
// Reads the contents of the specified file into the specified vector.
void ReadFileToVector(const FilePath& path, Vector<char>* contents);
// Returns the path the decoded data is saved at.
FilePath GetMD5SumPath(const FilePath& path);
#ifdef CALCULATE_MD5_SUMS
// Saves the MD5 sum to the specified file.
void SaveMD5Sum(const FilePath& path, WebCore::RGBA32Buffer* buffer);
#else
// Verifies the image. |path| identifies the path the image was loaded from.
// |frame_index| indicates which index from the decoder we should examine.
void VerifyImage(WebCore::ImageDecoder* decoder,
const FilePath& path,
const FilePath& md5_sum_path,
size_t frame_index);
#endif
class ImageDecoderTest : public testing::Test {
public:
explicit ImageDecoderTest(const std::string& format) : format_(format) { }
protected:
virtual void SetUp();
// Returns the vector of image files for testing.
std::vector<FilePath> GetImageFiles() const;
// Returns true if the image is bogus and should not be successfully decoded.
bool ShouldImageFail(const FilePath& path) const;
// Creates and returns an ImageDecoder for the file at the given |path|. If
// |split_at_random| is true, also verifies that breaking the data supplied to
// the decoder into two random pieces does not cause problems.
WebCore::ImageDecoder* SetupDecoder(const FilePath& path,
bool split_at_random) const;
// Verifies each of the test image files is decoded correctly and matches the
// expected state. |file_selection| and |threshold| can be used to select
// files to test based on file size.
void TestDecoding(ImageDecoderTestFileSelection file_selection,
const int64 threshold) const;
void TestDecoding() const {
TestDecoding(TEST_ALL, 0);
}
#ifndef CALCULATE_MD5_SUMS
// Verifies that decoding still works correctly when the files are split into
// pieces at a random point. |file_selection| and |threshold| can be used to
// select files to test based on file size.
void TestChunkedDecoding(ImageDecoderTestFileSelection file_selection,
const int64 threshold) const;
void TestChunkedDecoding() const {
TestChunkedDecoding(TEST_ALL, 0);
}
#endif
// Returns the correct type of image decoder for this test.
virtual WebCore::ImageDecoder* CreateDecoder() const = 0;
// The format to be decoded, like "bmp" or "ico".
std::string format_;
protected:
// Path to the test files.
FilePath data_dir_;
private:
DISALLOW_COPY_AND_ASSIGN(ImageDecoderTest);
};
#endif // WEBKIT_TOOLS_TEST_SHELL_IMAGE_DECODER_UNITTEST_H_
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