test(frontend): add unit tests for WorkspaceComponent

[Yicong-Huang]

What changes were proposed in this PR?

Replace the license-only placeholder spec with 19 unit tests covering WorkspaceComponent's public surface — pid parsing, cold/warm start, workflow loading (success / 403 / broken / URL fragment), view-count wiring, write-access from metadata, auto-persist idempotency, destroy-time persist + cleanup, and the copilot getter.

The fixture overrides the template to <div #codeEditor> so the heavyweight children don't compile in the test build, and stubs all 14 injected services.

Drop the spec from the exclude lists in tsconfig.spec.json and angular.json.

Any related issues, documentation, discussions?

Closes #4967.

How was this PR tested?

yarn ng test --watch=false: 267 pass, 8 skip, 2 todo. yarn format:ci clean.

Was this PR authored or co-authored using generative AI tooling?

Generated-by: Claude Opus 4.7 (1M context)

[aglinxinyuan]

The fixture overrides the component's template to a minimal <div #codeEditor>

Do we have to overrides the component's template to a minimal <div #codeEditor>? If we don't load children, the test cannot verify the side effects after loading them.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 41.17%. Comparing base (8b5dbf8) to head (234573e).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #4969      +/-   ##
============================================
- Coverage     42.49%   41.17%   -1.33%     
  Complexity     2180     2180              
============================================
  Files          1005     1045      +40     
  Lines         37429    39853    +2424     
  Branches       3914     4201     +287     
============================================
+ Hits          15907    16409     +502     
- Misses        20558    22422    +1864     
- Partials        964     1022      +58     

Flag	Coverage Δ
frontend	30.52% <ø> (-1.75%)	⬇️

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[Copilot]

Pull request overview

This PR replaces the placeholder WorkspaceComponent spec with a real Vitest-based unit test suite and re-enables that spec in the frontend test build configuration, improving confidence in the workspace route’s initialization and workflow-loading behaviors.

Changes:

• Implemented unit tests covering key WorkspaceComponent behaviors (ngOnInit, ngAfterViewInit, loadWorkflowWithId, triggerCenter, registerAutoPersistWorkflow, copilotEnabled) with service stubs and a minimal overridden template.
• Updated frontend test configurations to stop excluding workspace.component.spec.ts so it is compiled and executed as part of ng test.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
frontend/src/app/workspace/component/workspace.component.spec.ts	Adds a real unit test suite for WorkspaceComponent with mocked dependencies and a minimal template override.
frontend/src/tsconfig.spec.json	Removes the workspace spec from the TypeScript spec exclude list so it compiles in test builds.
frontend/angular.json	Removes the workspace spec from the Angular test exclude list so it runs under the unit-test builder.

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[aglinxinyuan]

If we don't load children, the test cannot verify the side effects after loading them.

[Yicong-Huang]

code editor has other issue on tests. do you think we can enable it later? or maybe we can fix code editor's test first. WDYT?

[aglinxinyuan]

We can fix it later. Let's note it somewhere.