docs: replace deprecated karma-coverage-istanbul-reporter (#41246)

'karma-coverage-istanbul-reporter' usage has been deprecated since version 11.
Please install 'karma-coverage' and update 'karma.conf.js.' For more info, see https://github.com/karma-runner/karma-coverage/blob/master/README.md

PR Close #41246
This commit is contained in:
Manuele Dones 2021-03-17 18:14:44 +01:00 committed by Misko Hevery
parent e23994191c
commit ac9c4289e0
1 changed files with 18 additions and 11 deletions

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@ -38,20 +38,27 @@ The code coverage percentages let you estimate how much of your code is tested.
If your team decides on a set minimum amount to be unit tested, you can enforce this minimum with the Angular CLI.
For example, suppose you want the code base to have a minimum of 80% code coverage.
To enable this, open the [Karma](https://karma-runner.github.io) test platform configuration file, `karma.conf.js`, and add the following in the `coverageIstanbulReporter:` key.
To enable this, open the [Karma](https://karma-runner.github.io) test platform configuration file, `karma.conf.js`, and add the `check` property in the `coverageReporter:` key.
```
coverageIstanbulReporter: {
reports: [ 'html', 'lcovonly' ],
fixWebpackSourcePaths: true,
thresholds: {
statements: 80,
lines: 80,
branches: 80,
functions: 80
```js
coverageReporter: {
dir: require('path').join(__dirname, './coverage/<project-name>'),
subdir: '.',
reporters: [
{ type: 'html' },
{ type: 'text-summary' }
],
check: {
global: {
statements: 80,
branches: 80,
functions: 80,
lines: 80
}
}
}
```
The `thresholds` property causes the tool to enforce a minimum of 80% code coverage when the unit tests are run in the project.
The `check` property causes the tool to enforce a minimum of 80% code coverage when the unit tests are run in the project.
You can find more info about the different coverage configuration options [here](https://github.com/karma-runner/karma-coverage/blob/master/docs/configuration.md).