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Merged
kohsuke merged 1 commit into from
Nov 27, 2025
Merged

Update tests/data/karma/README.md #1200

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21 changes: 15 additions & 6 deletions tests/data/karma/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@ Karma

```bash
npm init -y
npm install --save-dev karma karma-jasmine jasmine-core karma-chrome-launcher karma-json-reporter
npm install --save-dev karma karma-jasmine jasmine-core karma-chrome-launcher karma-json-reporter karma-reports-with-file-paths
```
The instructions are based on:
https://karma-runner.github.io/6.4/intro/installation.html
Expand All @@ -30,10 +30,14 @@ npx karma init
module.exports = function (config) {
config.set({
files: process.env.KARMA_FILES ? JSON.parse(process.env.KARMA_FILES) : [],
preprocessors: {
'**/*.spec.js': ['reports-with-file-paths']
},
...
plugins: [
...
require('karma-json-reporter')
require('karma-json-reporter'),
require('karma-reports-with-file-paths')
],
jsonReporter: {
outputFile: require('path').join(__dirname, 'test-results.json'),
Expand Down Expand Up @@ -99,7 +103,7 @@ npx karma start --single-run
```
ng new ng-karma-app --test-runner=karma
cd ng-karma-app
npm install --save-dev karma karma-chrome-launcher karma-coverage karma-jasmine karma-jasmine-html-reporter jasmine-core karma-json-reporter @types/jasmine
npm install --save-dev karma karma-chrome-launcher karma-coverage karma-jasmine karma-jasmine-html-reporter jasmine-core karma-json-reporter karma-reports-with-file-paths @types/jasmine
ng test --no-watch --no-progress --browsers=ChromeHeadless
```

Expand All @@ -116,10 +120,15 @@ ng generate config karma
```
module.exports = function (config) {
config.set({
...
preprocessors: {
'**/*.spec.ts': ['reports-with-file-paths']
},
...
plugins: [
...
require('karma-json-reporter')
require('karma-json-reporter'),
require('karma-reports-with-file-paths')
],
jsonReporter: {
outputFile: require('path').join(__dirname, 'test-results.json'),
Expand All @@ -143,13 +152,13 @@ ng test --no-watch --no-progress --browsers=ChromeHeadless
launchable record tests karma test-results.json
```

**Subset tests with **ng**:**
**Subset tests with ng:**
```
ng test --list-tests | grep src > test_list.txt
cat test_list.txt | launchable subset --target 25% karma --with ng > subset.txt
```

**Run subset of tests**
```
ng test --no-watch --no-progress --browsers=ChromeHeadless --include $(cat subset.txt)
ng test --no-watch --no-progress --browsers=ChromeHeadless $(cat subset.txt)
```
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