test: add Playwright coverage and test ids for CpsTreeSelectComponent

[fateeand]

Summary

• Added 12 tests: keyboard arrow navigation, Escape close, directory expand/collapse via click, Enter/Space selecting a leaf (+closing), Enter expanding a directory, virtual-scroll rendering, chip removal, prefix icon rendering, required-field validation, two-way binding readout, accessible-name computation, hideDetails, openOnClear=false.
• Added test ids to the component's template.
• Added four new demo examples to cover hideDetails, openOnClear=false, ariaLabel and expandAll()/collapseAll().
• Fixed a bug in case when there is no selected value, where expandAll()/collapseAll() mutated TreeNode.expanded in place but never told PrimeNG's p-tree (which is OnPush) to re-render, so the DOM silently never reflected the call.
• Fixed a Prettier reformat on CpsTreeSelectAppearanceType.

TODO: Merge with feat: add test ids to tree select component and fix expandAll()/collapseAll() re-render

---

Release notes:

• added Playwright E2E coverage for cps-tree-select
• added test ids to cps-tree-select
• fixed expandAll()/collapseAll() re-render

[github-actions]

Coverage report for library

St.❔	Category	Percentage	Covered / Total
🟡	Statements	77.81%	6273/8062
🟡	Branches	66.94%	2891/4319
🟡	Functions	79.45%	1183/1489
🟡	Lines	78.8%	5865/7443

Test suite run success

2474 tests passing in 76 suites.

Report generated by 🧪jest coverage report action from cfa280d

[Copilot]

Pull request overview

This PR adds end-to-end Playwright coverage for cps-tree-select, introduces stable data-testid hooks across the component template and composition demo page, and fixes expandAll() / collapseAll() so PrimeNG’s p-tree reliably re-renders after in-place expansion state mutations.

Changes:

• Added a new Playwright spec covering keyboard navigation, selection, expand/collapse behaviors, virtual scroll rendering, chip removal, validation, accessibility name, and hideDetails / openOnClear=false.
• Added data-testid attributes to CpsTreeSelectComponent template and to the composition demo page instances to support stable E2E selectors.
• Updated expandAll() / collapseAll() in the shared base tree dropdown to force a tree refresh and mark the tree for check.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
projects/cps-ui-kit/src/lib/components/internal/cps-base-tree-dropdown/cps-base-tree-dropdown.component.ts	Ensures expand/collapse all triggers a refresh and change detection for PrimeNG tree re-rendering.
projects/cps-ui-kit/src/lib/components/cps-tree-select/cps-tree-select.component.ts	Formatting-only change to the appearance type union.
projects/cps-ui-kit/src/lib/components/cps-tree-select/cps-tree-select.component.html	Adds data-testid hooks throughout the tree-select UI for stable Playwright selectors.
projects/composition/src/app/pages/tree-select-page/tree-select-page.examples.ts	Adds new demo/example snippets for expand/collapse, ariaLabel, hideDetails, and openOnClear=false.
projects/composition/src/app/pages/tree-select-page/tree-select-page.component.ts	Imports CpsButtonComponent to support the new expand/collapse demo controls.
projects/composition/src/app/pages/tree-select-page/tree-select-page.component.scss	Adds styling for the new expand/collapse action button row.
projects/composition/src/app/pages/tree-select-page/tree-select-page.component.html	Adds new demo sections and data-testid attributes used by Playwright tests.
playwright/cps-ui-kit/components/cps-tree-select.spec.ts	New Playwright E2E test suite covering key interaction, rendering, a11y name, and option behaviors.

---

💡 Add a code-review agent skill for context-aware, tailored reviews. Learn more in the docs.

[github-actions]

Playwright test results

 790 passed

Details

 790 tests across 33 suites
 23 minutes, 34 seconds
 cfa280d
 For details, download the Playwright report