[I] Frontend specs replace the parent template at test time, hiding it from coverage [texera]

["Yicong-Huang (via GitHub)" <gi...@apache.org>]

Yicong-Huang opened a new issue, #5188:
URL: https://github.com/apache/texera/issues/5188

   ### Task Summary
   
   Several frontend component specs replace the parent component's template at test time — either with `overrideComponent({ set: { template: "" } })`, with a stripped stub markup string, or with the broader `overrideComponent({ set: { imports: [], schemas: [CUSTOM_ELEMENTS_SCHEMA] } })` form. The intent in each case is to keep heavy child components or directives out of the test build, but the side effect is that `fixture.detectChanges()` renders an empty or stub DOM, the real `.component.html` never executes, and v8 coverage records 0% for it — even though the specs themselves report green.
   
   A handful of specs also carry `schemas: [NO_ERRORS_SCHEMA]`, which Angular's own docs warn against because it hides real template typos and missing bindings. For Angular 19 standalone components the schema is usually unnecessary anyway: the parent's `imports:` array pulls the child graph in transitively, so unknown-element errors no longer fire.
   
   Refactor the affected specs to render the real template, document the right approach in `frontend/TESTING.md`, and add ESLint rules so the patterns can't grow back.
   
   ### Task Type
   
   - [x] Testing / QA
   - [x] Documentation


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Re: [I] Frontend specs replace the parent template at test time, hiding it from coverage [texera]

["Yicong-Huang (via GitHub)" <gi...@apache.org>]

Yicong-Huang closed issue #5188: Frontend specs replace the parent template at test time, hiding it from coverage
URL: https://github.com/apache/texera/issues/5188


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