Merge pull request #7700 from owncloud/cucumber-report-docs

[docs] add more information about generating reports for cucumber tests

docs/testing/testing.md

@@ -185,10 +185,25 @@ If you're using a M1 Mac, you need to use `seleniarm/standalone-chromium:4.0.0-b
 To watch the tests while running, open [http://host.docker.internal:6080/](http://host.docker.internal:6080/) in the browser to access your VNC client.
 
 
-#### Watch the test report
+### Watch the test report
+
+The cucumber library is used as the test runner for both e2e and acceptance tests. The report generator script lives inside the `tests/e2e/cucumber/report` folder. If you want to create a report after the tests are done, run the command:
+
+```bash
+node tests/e2e/cucumber/report --report-input=tests/e2e/cucumber/report/report.json
+```
+
+`--report-input` is the path to the report file generated by the test runner. If you want to generate a report for the acceptance tests, you can run the command
+
+```bash
+node tests/e2e/cucumber/report --report-input=tests/acceptance/report/report.json
+```
 
-If you want to create a report after the tests are done, run the command ```node tests/e2e/cucumber/report```.
 By default, the report gets generated to reports/e2e/cucumber/releaseReport/cucumber_report.html.
 The location can be changed by adding the ```--report-location``` flag.
 
-To see all available options run ```node tests/e2e/cucumber/report --help```.
+To see all available options run
+
+```bash
+node tests/e2e/cucumber/report --help
+```