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docs: note about sharded projects in the merged config (#30184) 

Fixes https://github.com/microsoft/playwright/issues/29841
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Yury Semikhatsky 2024-04-02 14:41:23 -07:00 committed by GitHub
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9
docs/src/test-reporter-api/class-reporter.md
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@ -87,6 +87,15 @@ and [`method: Reporter.onError`] is called when something went wrong outside of
If your custom reporter does not print anything to the terminal, implement [`method: Reporter.printsToStdio`] and return `false`. This way, Playwright will use one of the standard terminal reporters in addition to your custom reporter to enhance user experience.
**Merged report API notes**
When merging mutliple [`blob`](./test-reporters#blob-reporter) reports via [`merge-reports`](./test-sharding#merge-reports-cli) CLI
command, the same [Reporter] API is called to produce final reports and all existing reporters
should work without any changes. There some subtle differences though which might affect some custom
reporters.
* Projects from different shards are always kept as separate [TestProject] objects. E.g. if project 'Desktop Chrome' was sharded across 5 machines then there will be 5 instances of projects with the same name in the config passed to [`method: Reporter.onBegin`].
## optional method: Reporter.onBegin
* since: v1.10

11
packages/playwright/types/testReporter.d.ts vendored
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@ -441,6 +441,17 @@ export interface FullResult {
* [reporter.printsToStdio()](https://playwright.dev/docs/api/class-reporter#reporter-prints-to-stdio) and return
* `false`. This way, Playwright will use one of the standard terminal reporters in addition to your custom reporter
* to enhance user experience.
*
* **Merged report API notes**
*
* When merging mutliple [`blob`](https://playwright.dev/docs/api/test-reporters#blob-reporter) reports via
* [`merge-reports`](https://playwright.dev/docs/api/test-sharding#merge-reports-cli) CLI command, the same {@link Reporter} API is called to
* produce final reports and all existing reporters should work without any changes. There some subtle differences
* though which might affect some custom reporters.
* - Projects from different shards are always kept as separate {@link TestProject} objects. E.g. if project
* 'Desktop Chrome' was sharded across 5 machines then there will be 5 instances of projects with the same name in
* the config passed to
* [reporter.onBegin(config, suite)](https://playwright.dev/docs/api/class-reporter#reporter-on-begin).
*/
export interface Reporter {
/**