Implement a way to run each interactive UI test isolated

chrome/test/browser/browser_test_runner.cc

-// Copyright (c) 2009 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 "chrome/test/browser/browser_test_runner.h"
-
-#include <vector>
-
-#include "base/command_line.h"
-#include "base/logging.h"
-#include "base/process_util.h"
-#include "base/scoped_ptr.h"
-#include "base/string_util.h"
-
-namespace {
-
-const wchar_t* const kGTestListTestsFlag = L"gtest_list_tests";
-const wchar_t* const kGTestRunDisabledTestsFlag =
-    L"gtest_also_run_disabled_tests";
-
-// Retrieves the list of tests to run by running gtest with the
-// --gtest_list_tests flag in a forked process and parsing its output.
-// |command_line| should contain the command line used to start the browser
-// test launcher, it is expected that it does not contain the
-// --gtest_list_tests flag already.
-// Note: we cannot implement this in-process for InProcessBrowserTestRunner as
-// GTest prints to the stdout and there are no good way of temporarily
-// redirecting outputs.
-bool GetTestList(const CommandLine& command_line,
-                 std::vector<std::string>* test_list) {
-  DCHECK(!command_line.HasSwitch(kGTestListTestsFlag));
-
-  // Run ourselves with the --gtest_list_tests option and read the output.
-  CommandLine new_command_line(command_line);
-  new_command_line.AppendSwitch(kGTestListTestsFlag);
-  std::string output;
-  if (!base::GetAppOutput(new_command_line, &output))
-    return false;
-
-  // The output looks like:
-  // TestCase.
-  //   Test1
-  //   Test2
-  // OtherTestCase.
-  //   FooTest
-  // ...
-  std::vector<std::string> lines;
-  SplitString(output, '\n', &lines);
-
-  std::string test_case;
-  for (std::vector<std::string>::const_iterator iter = lines.begin();
-       iter != lines.end(); ++iter) {
-    std::string line = *iter;
-    if (line.empty())
-      continue;  // Just ignore empty lines if any.
-
-    if (line[line.size() - 1] == '.') {
-      // This is a new test case.
-      test_case = line;
-      continue;
-    }
-
-    if (!command_line.HasSwitch(kGTestRunDisabledTestsFlag) &&
-        line.find("DISABLED") != std::string::npos)
-      continue;  // Skip disabled tests.
-
-    // We are dealing with a test.
-    test_list->push_back(test_case + line);
-  }
-  return true;
-}
-
-}  // namespace
-
-namespace browser_tests {
-
-BrowserTestRunner::BrowserTestRunner() {
-}
-
-BrowserTestRunner::~BrowserTestRunner() {
-}
-
-bool RunTests(const BrowserTestRunnerFactory& browser_test_runner_factory) {
-  const CommandLine* command_line = CommandLine::ForCurrentProcess();
-
-  DCHECK(!command_line->HasSwitch(kGTestListTestsFlag));
-
-  // First let's get the list of tests we need to run.
-  std::vector<std::string> test_list;
-  if (!GetTestList(*command_line, &test_list)) {
-    printf("Failed to retrieve the tests to run.\n");
-    return false;
-  }
-
-  if (test_list.empty()) {
-    printf("No tests to run.\n");
-    return false;
-  }
-
-  int test_run_count = 0;
-  std::vector<std::string> failed_tests;
-  for (std::vector<std::string>::const_iterator iter = test_list.begin();
-       iter != test_list.end(); ++iter) {
-    std::string test_name = *iter;
-    scoped_ptr<BrowserTestRunner> test_runner(
-        browser_test_runner_factory.CreateBrowserTestRunner());
-    if (!test_runner.get() || !test_runner->Init())
-      return false;
-    test_run_count++;
-    if (!test_runner->RunTest(test_name.c_str())) {
-      if (std::find(failed_tests.begin(), failed_tests.end(), test_name) ==
-          failed_tests.end()) {
-        failed_tests.push_back(*iter);
-      }
-    }
-  }
-
-  printf("%d test%s run\n", test_run_count, test_run_count > 1 ? "s" : "");
-  printf("%d test%s failed\n", static_cast<int>(failed_tests.size()),
-                               failed_tests.size() > 1 ? "s" : "");
-  if (failed_tests.empty())
-    return true;
-
-  printf("Failing tests:\n");
-  for (std::vector<std::string>::const_iterator iter = failed_tests.begin();
-       iter != failed_tests.end(); ++iter) {
-    printf("%s\n", iter->c_str());
-  }
-
-  return false;
-}
-
-}  // namespace