defined in @angular/platform-browser/testing.ts (line 1) BrowserTestingModule查看 BrowserTestingModule 文档TEST_BROWSER_APPLICATION_PROVIDERS查看 TEST_BROWSER_APPLICATION_PROVIDERS 文档TEST_BROWSER_PLATFORM_PROVIDERS查看 TEST_BROWSER_PLATFORM_PROVIDERS 文档browserTestingPlatform查看 browserTestingPlatform 文档platformBrowserTesting查看 platformBrowserTesting 文档