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- // Copyright 2013 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 TESTING_DATA_DRIVEN_TESTING_DATA_DRIVEN_TEST_H_
- #define TESTING_DATA_DRIVEN_TESTING_DATA_DRIVEN_TEST_H_
- #include <string>
- #include "base/files/file_path.h"
- namespace testing {
- // A convenience class for implementing data-driven tests. Subclassers need only
- // implement the conversion of serialized input data to serialized output data
- // and provide a set of input files. For each input file, on the first run, a
- // gold output file is generated; for subsequent runs, the test output is
- // compared to this gold output.
- class DataDrivenTest {
- public:
- DataDrivenTest(const DataDrivenTest&) = delete;
- DataDrivenTest& operator=(const DataDrivenTest&) = delete;
- // For each file in |input_directory| whose filename matches
- // |file_name_pattern|, slurps in the file contents and calls into
- // |GenerateResults()|. If the corresponding output file already exists in
- // the |output_directory|, verifies that the results match the file contents;
- // otherwise, writes a gold result file to the |output_directory|.
- void RunDataDrivenTest(const base::FilePath& input_directory,
- const base::FilePath& output_directory,
- const base::FilePath::StringType& file_name_pattern);
- // As above, but runs a test for a single file, the full path of which is
- // given by |test_file_name|.
- void RunOneDataDrivenTest(const base::FilePath& test_file_name,
- const base::FilePath& output_directory,
- bool is_expected_to_pass);
- // Given the |input| data, generates the |output| results. The output results
- // must be stable across runs.
- // Note: The return type is |void| so that googletest |ASSERT_*| macros will
- // compile.
- virtual void GenerateResults(const std::string& input,
- std::string* output) = 0;
- // Return |base::FilePath|s to the test input and output subdirectories
- // ../|feature_dir|/|test_name|/input and ../|feature_dir|/|test_name|/output.
- base::FilePath GetInputDirectory();
- base::FilePath GetOutputDirectory();
- protected:
- DataDrivenTest(const base::FilePath& test_data_directory,
- const base::FilePath::StringType& feature_name,
- const base::FilePath::StringType& test_name);
- virtual ~DataDrivenTest();
- private:
- base::FilePath test_data_directory_;
- base::FilePath::StringType feature_directory_;
- base::FilePath::StringType test_name_;
- };
- } // namespace testing
- #endif // TESTING_DATA_DRIVEN_TESTING_DATA_DRIVEN_TEST_H_
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