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// Copyright (c) 2012 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 CONTENT_TEST_IMAGE_DECODER_TEST_H_
#define CONTENT_TEST_IMAGE_DECODER_TEST_H_
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/files/file_path.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace blink { class WebImageDecoder; }
// Decodes a handful of image files and compares their MD5 sums to the stored
// sums on disk. To recalculate the MD5 sums, uncomment the CALCULATE_MD5_SUMS
// #define in the .cc file.
//
// 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.
enum ImageDecoderTestFileSelection {
TEST_ALL,
TEST_SMALLER,
TEST_BIGGER,
};
// Returns the path the decoded data is saved at.
base::FilePath GetMD5SumPath(const base::FilePath& path);
class ImageDecoderTest : public testing::Test {
public:
explicit ImageDecoderTest(const std::string& format) : format_(format) { }
protected:
virtual void SetUp() override;
// Returns the vector of image files for testing.
std::vector<base::FilePath> GetImageFiles() const;
// Returns true if the image is bogus and should not be successfully decoded.
bool ShouldImageFail(const base::FilePath& path) const;
// Tests if decoder decodes image at image_path with underlying frame at
// index desired_frame_index. The md5_sum_path is needed if the test is not
// asked to generate one, i.e. if #define CALCULATE_MD5_SUMS is not set.
void TestWebKitImageDecoder(const base::FilePath& image_path,
const base::FilePath& md5_sum_path,
int desired_frame_index) 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.
// If just the MD5 sum is wanted, this skips chunking.
void TestDecoding(ImageDecoderTestFileSelection file_selection,
const int64 threshold);
void TestDecoding() {
TestDecoding(TEST_ALL, 0);
}
// Creates WebKit API's decoder.
virtual blink::WebImageDecoder* CreateWebKitImageDecoder() const = 0;
// The format to be decoded, like "bmp" or "ico".
std::string format_;
protected:
const base::FilePath& data_dir() const { return data_dir_; }
private:
// Path to the test files.
base::FilePath data_dir_;
DISALLOW_COPY_AND_ASSIGN(ImageDecoderTest);
};
#endif // CONTENT_TEST_IMAGE_DECODER_TEST_H_