1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CONTENT_TEST_IMAGE_DECODER_TEST_H_ 6 #define CONTENT_TEST_IMAGE_DECODER_TEST_H_ 7 8 #include <string> 9 #include <vector> 10 11 #include "base/basictypes.h" 12 #include "base/compiler_specific.h" 13 #include "base/files/file_path.h" 14 15 #include "testing/gtest/include/gtest/gtest.h" 16 17 namespace blink { class WebImageDecoder; } 18 19 // Decodes a handful of image files and compares their MD5 sums to the stored 20 // sums on disk. To recalculate the MD5 sums, uncomment the CALCULATE_MD5_SUMS 21 // #define in the .cc file. 22 // 23 // The image files and corresponding MD5 sums live in the directory 24 // chrome/test/data/*_decoder (where "*" is the format being tested). 25 // 26 // Note: The MD5 sums calculated in this test by little- and big-endian systems 27 // will differ, since no endianness correction is done. If we start compiling 28 // for big endian machines this should be fixed. 29 30 enum ImageDecoderTestFileSelection { 31 TEST_ALL, 32 TEST_SMALLER, 33 TEST_BIGGER, 34 }; 35 36 // Returns the path the decoded data is saved at. 37 base::FilePath GetMD5SumPath(const base::FilePath& path); 38 39 class ImageDecoderTest : public testing::Test { 40 public: ImageDecoderTest(const std::string & format)41 explicit ImageDecoderTest(const std::string& format) : format_(format) { } 42 43 protected: 44 virtual void SetUp() OVERRIDE; 45 46 // Returns the vector of image files for testing. 47 std::vector<base::FilePath> GetImageFiles() const; 48 49 // Returns true if the image is bogus and should not be successfully decoded. 50 bool ShouldImageFail(const base::FilePath& path) const; 51 52 // Tests if decoder decodes image at image_path with underlying frame at 53 // index desired_frame_index. The md5_sum_path is needed if the test is not 54 // asked to generate one, i.e. if #define CALCULATE_MD5_SUMS is not set. 55 void TestWebKitImageDecoder(const base::FilePath& image_path, 56 const base::FilePath& md5_sum_path, 57 int desired_frame_index) const; 58 59 // Verifies each of the test image files is decoded correctly and matches the 60 // expected state. |file_selection| and |threshold| can be used to select 61 // files to test based on file size. 62 // If just the MD5 sum is wanted, this skips chunking. 63 void TestDecoding(ImageDecoderTestFileSelection file_selection, 64 const int64 threshold); 65 TestDecoding()66 void TestDecoding() { 67 TestDecoding(TEST_ALL, 0); 68 } 69 70 // Creates WebKit API's decoder. 71 virtual blink::WebImageDecoder* CreateWebKitImageDecoder() const = 0; 72 73 // The format to be decoded, like "bmp" or "ico". 74 std::string format_; 75 76 protected: data_dir()77 const base::FilePath& data_dir() const { return data_dir_; } 78 79 private: 80 // Path to the test files. 81 base::FilePath data_dir_; 82 83 DISALLOW_COPY_AND_ASSIGN(ImageDecoderTest); 84 }; 85 86 #endif // CONTENT_TEST_IMAGE_DECODER_TEST_H_ 87