Implement a way to run each interactive UI test isolated

chrome/test/browser/browser_test_launcher_out_of_proc.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 <string>
-
-#include "base/command_line.h"
-#include "base/logging.h"
-#include "base/process_util.h"
-
-#include "chrome/test/browser/browser_test_runner.h"
-#include "chrome/test/unit/chrome_test_suite.h"
-
-// This version of the browser test launcher forks a new process for each test
-// it runs.
-
-namespace {
-
-const wchar_t* const kGTestListTestsFlag = L"gtest_list_tests";
-const wchar_t* const kChildProcessFlag = L"child";
-
-class OutOfProcBrowserTestRunner : public browser_tests::BrowserTestRunner {
- public:
-  OutOfProcBrowserTestRunner() {
-  }
-
-  virtual ~OutOfProcBrowserTestRunner() {
-  }
-
-  bool Init() {
-    return true;
-  }
-
-  // Returns true if the test succeeded, false if it failed.
-  bool RunTest(const std::string& test_name) {
-    const CommandLine* cmd_line = CommandLine::ForCurrentProcess();
-    CommandLine new_cmd_line(cmd_line->argv());
-    // Always enable disabled tests.  This method is not called with disabled
-    // tests unless this flag was specified to the browser test executable.
-    new_cmd_line.AppendSwitch(L"gtest_also_run_disabled_tests");
-    new_cmd_line.AppendSwitchWithValue(L"gtest_filter", ASCIIToWide(test_name));
-    new_cmd_line.AppendSwitch(kChildProcessFlag);
-
-    base::ProcessHandle process_handle;
-    bool r = base::LaunchApp(new_cmd_line, false, false, &process_handle);
-    if (!r)
-      return false;
-
-    int exit_code = 0;
-    r = base::WaitForExitCode(process_handle, &exit_code);
-    if (!r)
-      return false;
-
-    return exit_code == 0;
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(OutOfProcBrowserTestRunner);
-};
-
-class OutOfProcBrowserTestRunnerFactory
-    : public browser_tests::BrowserTestRunnerFactory {
- public:
-  OutOfProcBrowserTestRunnerFactory() { }
-
-  virtual browser_tests::BrowserTestRunner* CreateBrowserTestRunner() const {
-    return new OutOfProcBrowserTestRunner();
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(OutOfProcBrowserTestRunnerFactory);
-};
-
-}  // namespace
-
-int main(int argc, char** argv) {
-  CommandLine::Init(argc, argv);
-  const CommandLine* command_line = CommandLine::ForCurrentProcess();
-
-  if (command_line->HasSwitch(kChildProcessFlag))
-    return ChromeTestSuite(argc, argv).Run();
-
-  if (command_line->HasSwitch(kGTestListTestsFlag))
-    return ChromeTestSuite(argc, argv).Run();
-
-  OutOfProcBrowserTestRunnerFactory test_runner_factory;
-  return browser_tests::RunTests(test_runner_factory) ? 0 : 1;
-}