[Test Improver] Add unit tests for useRuntimeFlag composable

[github-actions]

🤖 Test Improver — automated AI assistant

Goal and Rationale

shell/composables/useRuntimeFlag.ts had zero test coverage despite containing meaningful semver-based version-gating logic:

• featureDropdownMenu uses semver.coerce() to normalise version strings (strips v prefixes, pre-release tags, uncoercible strings fall back to 0.0.0)
• Then semver.gte() compares against the 2.11.0 boundary

Bugs here would silently disable the dropdown menu feature for all users.

Approach

• Mock @shell/utils/version.getVersionInfo to return a reactive ref-backed version string
• The featureDropdownMenu computed auto-invalidates when mockVersion.value changes (Vue reactive dependency tracking)
• Single it.each table with 8 cases — no jest.isolateModules needed
• useRuntimeFlag({} as any) called once at describe-level; the returned featureDropdownMenu ref is shared across all entries

Coverage Impact

File	Stmts	Branch	Funcs	Lines
Before	0 %	0 %	0 %	0 %
After	87 %	100 %	50 %	87 %

Statement/function coverage is < 100 % because useRuntimeFlag itself (the trivial one-liner setter) is not separately tested per project guidelines ("What NOT to Test").

Test Cases

Version input	Expected
2.11.0	true (at boundary)
2.12.0	true (above boundary)
v2.11.0	true (v-prefixed, coerced to 2.11.0)
2.11.0-rc1	true (pre-release, coerced to 2.11.0)
2.10.9	false (just below boundary)
2.0.0	false (well below boundary)
dev	false (uncoercible → falls back to 0.0.0)
unknown	false (uncoercible → falls back to 0.0.0)

Test Status

PASS shell/composables/useRuntimeFlag.test.ts
Tests: 8 passed, 8 total
ESLint: 0 warnings, 0 errors

Reproducibility

# run tests
NODE_OPTIONS=--max_old_space_size=8192 node_modules/.bin/jest --no-coverage shell/composables/useRuntimeFlag.test.ts

# lint
node_modules/.bin/eslint --max-warnings 0 shell/composables/useRuntimeFlag.test.ts

Trade-offs

• The reactive-ref mock approach avoids jest.isolateModules boilerplate while correctly invalidating Vue's computed cache between test entries
• Low maintenance burden: tests are table-driven and only test meaningful logic branches

Warning

Firewall blocked 1 domain

The following domain was blocked by the firewall during workflow execution:

• download.cypress.io

To allow these domains, add them to the network.allowed list in your workflow frontmatter:

network:
  allowed:
    - defaults
    - "download.cypress.io"

See Network Configuration for more information.

Generated by Daily Test Improver · ● 4M · ◷