feat(core): add option to infer the tag names of components in tests #62283
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thePunderWoman
approved these changes
Jun 26, 2025
| // Note: injecting the renderer before accessing the definition appears to be load-bearing. | ||
| const testComponentRenderer = this.inject(TestComponentRenderer); | ||
| const componentDef: ComponentDef<T> = (type as any).ɵcmp; | ||
| const rootElId = `root${_nextRootElementId++}`; |
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Optional nit: It'd be nice to have a comment for the next two lines explaining what this is doing.
devversion
approved these changes
Jun 26, 2025
Exposes the code that we use to infer the tag name of a component as a private export so that we can use it in `TestBed`.
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I've reworked this PR with the following changes:
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devversion
approved these changes
Jul 23, 2025
Currently when testing a component using `TestBed.createComponent`, we always create the component as a `div` which isn't aligned with the runtime. The runtime tries to parse out the tag name from the first selector in `@Component` and only falls back to `div` if there isn't one. This behavior difference can cause components to not behave like they would in production which reduces the usefulness of the tests. These changes add the `inferTagName` option to `TestBed.createComponent` and `TestBed.configureTestingModule` that allows apps to opt into inferring the tag name from the selector in the same way as the runtime. Currently the new option is set to `false`, but we intend to change it to `true` in a future version.
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This PR was merged into the repository by commit cec91c0. The changes were merged into the following branches: main |
kirjs
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Jul 23, 2025
…62283) Currently when testing a component using `TestBed.createComponent`, we always create the component as a `div` which isn't aligned with the runtime. The runtime tries to parse out the tag name from the first selector in `@Component` and only falls back to `div` if there isn't one. This behavior difference can cause components to not behave like they would in production which reduces the usefulness of the tests. These changes add the `inferTagName` option to `TestBed.createComponent` and `TestBed.configureTestingModule` that allows apps to opt into inferring the tag name from the selector in the same way as the runtime. Currently the new option is set to `false`, but we intend to change it to `true` in a future version. PR Close #62283
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Currently when testing a component using
TestBed.createComponent, we always create the component as adivwhich isn't aligned with the runtime. The runtime tries to parse out the tag name from the first selector in@Componentand only falls back todivif there isn't one. This behavior difference can cause components to not behave like they would in production which reduces the usefulness of the tests.These changes add the
inferTagNameoption toTestBed.createComponentandTestBed.configureTestingModulethat allows apps to opt into inferring the tag name from the selector in the same way as the runtime. Currently the new option is set tofalse, but we intend to change it totruein a future version.