角度测试：无法加载记者“”，它没有注册

Question

I am trying the following command from https://cli.angular.io/reference.pdf

ng test --reporters

The following error is showing. Please tell me how to register reporter.

 05 01 2017 12:47:19.437:ERROR [reporter]: Can not load reporter "", it is not re gistered! Perhaps you are missing some plugin? 05 01 2017 12:47:44.876:WARN [karma]: No captured browser, open http://localhost :9876/ 05 01 2017 12:47:44.894:INFO [karma]: Karma v1.2.0 server started at http://loca lhost:9876/ 05 01 2017 12:47:44.895:INFO [launcher]: Launching browser Chrome with unlimited concurrency 05 01 2017 12:47:44.897:ERROR [karma]: Found 1 load error 

Answer 1

I have able to figure out how to use reporters in angular-cli

I have updated the Karma configuration file (karma.conf.js) as follows

require('karma-jasmine-html-reporter'),

and

reporters: config.angularCli && config.angularCli.codeCoverage
              ? ['progress', 'karma-remap-istanbul', 'kjhtml']
              : ['progress', 'kjhtml'],

Then run the following command to install the plugin

npm install karma-jasmine-html-reporter --save-dev

then I run

ng test --code-coverage

It is giving me a report like this