javascript - 浏览器在执行 karma 测试用例时断开连接

嗨，我有大约603个用茉莉花写的测试用例。我正在尝试使用ng test命令运行这些测试用例。但是每次浏览器在390个测试用例断开连接并再次重新启动浏览器并从编号1重新运行测试用例时，消息如下：

HeadlessChrome 0.0.0 (Windows 7 0.0.0): Executed 390 of 603 (14 FAILED) (0 secs / 37 mins 55.402 secs)HeadlessChrome 0.0.0 (Windows 7 0.0.0) ERROR DisconnectedHeadlessChrome 0.0.0 (Windows 7 0.0.0): Executed 390 of 603 (14 FAILED) DISCONNECTED (38 mins 45.052 secs / 37 mins 55.402 secs)HeadlessChrome 0.0.0 (Windows 7 0.0.0) ERRORHeadlessChrome 0.0.0 (Windows 7 0.0.0): Executed 390 of 603 (14 FAILED) DISCONNECTED (38 mins 45.052 secs / 37 mins 55.402 secs)26 08 2019 14:57:29.558:INFO [karma]: Restarting HeadlessChrome 0.0.0 (Windows 7 0.0.0) (1 of 5 attempts)26 08 2019 14:57:33.062:INFO [HeadlessChrome 0.0.0 (Windows 7 0.0.0)]: Connected on socket CF0U7yNUkencldeeAAAB with id 69964403

Karma.conf文件

 module.exports = function(config) {
    config.set({
        basePath: '',
        frameworks: ['jasmine', '@angular-devkit/build-angular'],
        plugins: [
            require('karma-jasmine'),
            require('karma-phantomjs-launcher'),
            require('karma-chrome-launcher'),
            require('karma-junit-reporter'),
            require('karma-jasmine-html-reporter'),
            require('karma-coverage-istanbul-reporter'),
            require('@angular-devkit/build-angular/plugins/karma')
        ],
        client: {
            clearContext: false
        },
        coverageIstanbulReporter: {
            reports: ['html', 'lcovonly'],
            fixWebpackSourcePaths: true
        },
        angularCli: {
            environment: 'dev'
        },
        mime: {
            'text/x-typescript': ['ts']
        },
        reporters: ['progress', 'kjhtml', 'junit'],
        junitReporter: {
            outputFile: './target/surefire-reports/TEST-com.ericsson.bss.rm.cpm.cpc.xml',
            suite: 'com.ericsson.bss.rm.cpm.cpc',
            useBrowserName: false
        },
        port: 9876,
        failOnEmptyTestSuite: false,
        colors: true,
        logLevel: config.LOG_INFO,
        autoWatch: false,
        mime: { 'text/x-typescript': ['ts', 'tsx'] },
        browsers: ['ChromeHeadless'],
        singleRun: true,
       captureTimeout: 800000,
       browserDisconnectTimeout: 2000,
       browserDisconnectTolerance: 5,
       browserNoActivityTimeout: 800000,
       webpack: { node: { fs: 'empty' } }
    });
};

Package.json文件：-

"devDependencies": {
    "@angular/cli": "^8.2.0",
    "@ericsson/cus-ui": "3.0.0",
    "@types/jasmine": "2.8.8",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "~12.0.8",
    "codelyzer": "^5.0.1",
    "jasmine-core": "~2.8.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~2.0.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-cli": "~1.0.1",
    "karma-coverage-istanbul-reporter": "^1.2.1",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "karma-junit-reporter": "^1.2.0",
    "karma-phantomjs-launcher": "^1.0.4",
    "karma-remap-istanbul": "0.6.0",
    "karma-spec-reporter": "0.0.30",
    "protractor": "5.4.2",
    "ts-node": "~8.2.0",
    "tslint": "~5.17.0",
    "typescript": "~3.4.3"
}

最佳答案

我遇到了与您完全相同的问题，并通过为它定义了一个自定义启动器来设法解决了这个问题：

browsers: ["Chrome-headless"],
            customLaunchers: {
                "Chrome-headless": {
                    base: 'Chrome',
                    flags: ['--headless', '--remote-debugging-port=9222', '--no-sandbox']
                }
            }

或者，您也可以通过在自定义启动器中添加以下附加标志来进行尝试：

--js-flags="--max_old_space_size=4096"

关于javascript - 浏览器在执行 karma 测试用例时断开连接，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/57655499/