File: data_driven_test.cc

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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.

#include "components/autofill/core/browser/data_driven_test.h"

#include "base/files/file_enumerator.h"
#include "base/files/file_util.h"
#include "base/strings/string_util.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace autofill {
namespace {

// Reads |file| into |content|, and converts Windows line-endings to Unix ones.
// Returns true on success.
bool ReadFile(const base::FilePath& file, std::string* content) {
  if (!base::ReadFileToString(file, content))
    return false;

  base::ReplaceSubstringsAfterOffset(content, 0, "\r\n", "\n");
  return true;
}

// Write |content| to |file|. Returns true on success.
bool WriteFile(const base::FilePath& file, const std::string& content) {
  int write_size = base::WriteFile(file, content.c_str(),
                                   static_cast<int>(content.length()));
  return write_size == static_cast<int>(content.length());
}

}  // namespace

void DataDrivenTest::RunDataDrivenTest(
    const base::FilePath& input_directory,
    const base::FilePath& output_directory,
    const base::FilePath::StringType& file_name_pattern) {
  ASSERT_TRUE(base::DirectoryExists(input_directory));
  ASSERT_TRUE(base::DirectoryExists(output_directory));
  base::FileEnumerator input_files(input_directory,
                                   false,
                                   base::FileEnumerator::FILES,
                                   file_name_pattern);

  for (base::FilePath input_file = input_files.Next();
       !input_file.empty();
       input_file = input_files.Next()) {
    RunOneDataDrivenTest(input_file, output_directory);
  }
}

void DataDrivenTest::RunOneDataDrivenTest(
    const base::FilePath& test_file_name,
    const base::FilePath& output_directory) {
  // iOS doesn't get rid of removed test files. TODO(estade): remove this after
  // all iOS bots are clobbered.
  if (test_file_name.BaseName().value() == FILE_PATH_LITERAL("multimerge.in"))
    return;

  ASSERT_TRUE(base::DirectoryExists(output_directory));
  SCOPED_TRACE(test_file_name.BaseName().value());

  std::string input;
  ReadFile(test_file_name, &input);

  std::string output;
  GenerateResults(input, &output);

  base::FilePath output_file = output_directory.Append(
      test_file_name.BaseName().StripTrailingSeparators().ReplaceExtension(
          FILE_PATH_LITERAL(".out")));

  std::string output_file_contents;
  if (ReadFile(output_file, &output_file_contents))
    EXPECT_EQ(output_file_contents, output);
  else
    ASSERT_TRUE(WriteFile(output_file, output));
}

base::FilePath DataDrivenTest::GetInputDirectory(
    const base::FilePath::StringType& test_name) {
  base::FilePath dir;
  dir = test_data_directory_.AppendASCII("autofill")
                            .Append(test_name)
                            .AppendASCII("input");
  return dir;
}

base::FilePath DataDrivenTest::GetOutputDirectory(
    const base::FilePath::StringType& test_name) {
  base::FilePath dir;
  dir = test_data_directory_.AppendASCII("autofill")
                            .Append(test_name)
                            .AppendASCII("output");
  return dir;
}

DataDrivenTest::DataDrivenTest(const base::FilePath& test_data_directory)
    : test_data_directory_(test_data_directory) {
}

DataDrivenTest::~DataDrivenTest() {
}

}  // namespace autofill