Angular CLI - 代码覆盖率

本章解释了代码覆盖率命令的语法及其示例。

语法

代码覆盖率命令的语法如下所示 -

ng test <project> --codeCoverage=true

ng test 命令允许使用编写的测试用例来检查代码覆盖率。查看下面的示例。

使用 **ng xi18n** 命令更新一个 Angular 项目。这一章在 https://tutorialspoint.com/angular_cli/angular_cli_ng_xi18n.htm. 中提供。使用 codeCoverage 命令运行测试。

示例

ng 代码覆盖率命令的例子如下 -

\>Node\>TutorialsPoint> ng test --codeCoverage=true
10% building 2/2 modules 0 active07 06 2020 15:21:46.292:WARN [karma]: No captur
ed browser, open https://:9876/
07 06 2020 15:21:46.299:INFO [karma-server]: Karma v4.4.1 server started at http
://0.0.0.0:9876/
07 06 2020 15:21:46.300:INFO [launcher]: Launching browsers Chrome with concurre
ncy unlimited
07 06 2020 15:21:46.312:INFO [launcher]: Starting browser Chrome
07 06 2020 15:21:55.456:WARN [karma]: No captured browser, open https://
:9876/
07 06 2020 15:21:55.533:INFO [Chrome 83.0.4103 (Windows 7.0.0)]: Connected on so
cket gJgRaX_rXI6ZqoAiAAAA with id 261512
...
Chrome 83.0.4103 (Windows 7.0.0): Executed 1 of 2 SUCCESS (0 secs / 0.053 secs)
...
Chrome 83.0.4103 (Windows 7.0.0): Executed 2 of 2 SUCCESS (0.107 secs / 0.082 se
cs)
TOTAL: 2 SUCCESS

=============================== Coverage summary ===============================

Statements   : 100% ( 8/8 )
Branches     : 100% ( 0/0 )
Functions    : 100% ( 3/3 )
Lines        : 100% ( 6/6 )
================================================================================

ng test 命令在 TutorialsPoint（项目文件夹）中创建了一个 coverage 文件夹，并将覆盖率报告以 html 格式生成。报告位置为：\>Node\>TutorialsPoint\>coverage\>TutorialsPoint\>index.html。