feat: add vitest test runner with fixture loader and mock activation#260
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Configures vitest as the primary test runner for the v6 Local Testing & Simulation Framework (Phase 47: Mock Infrastructure, issue #249). Changes: - package.json: add vitest ^2.0.0 devDependency; npm test → vitest run; npm run test:watch → vitest; npm run test:node preserves existing node --test runner for .test.cjs files - vitest.config.js: node environment, setupFiles: ['./test/setup.js'], includes .test.js/.spec.js, excludes .test.cjs (node:test incompatible) - test/setup.js: auto-activates mock-github and mock-gsd-agent in beforeEach/afterEach; conditional require — works when PRs #258/#259 are not yet merged to main; exports mockGitHub/mockGsdAgent - test/loadFixture.js: loadFixture(name) helper that reads from test/fixtures/; supports namespaced paths (e.g. 'github/issue-view'); throws descriptive errors on missing/invalid fixtures Closes #249 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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…cycle (#250) Adds test/validate-and-load.test.js with 23 vitest integration tests (5 groups) covering fresh .mgw/ init, migrateProjectState() idempotency, loadActiveIssue() prefix pattern, staleness detection via mock-github.cjs, and loadCrossRefs() validation — all isolated in tmp directories via process.cwd() override. Also includes vitest infrastructure (vitest.config.js, test/setup.js, test/loadFixture.js, test/fixtures/github/) from PRs #247 and #260 required to run the test suite. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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…cycle (#250) Adds test/validate-and-load.test.js with 23 vitest integration tests (5 groups) covering fresh .mgw/ init, migrateProjectState() idempotency, loadActiveIssue() prefix pattern, staleness detection via mock-github.cjs, and loadCrossRefs() validation — all isolated in tmp directories via process.cwd() override. Also includes vitest infrastructure (vitest.config.js, test/setup.js, test/loadFixture.js, test/fixtures/github/) from PRs #247 and #260 required to run the test suite. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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…cycle (#250) (#261) Adds test/validate-and-load.test.js with 23 vitest integration tests (5 groups) covering fresh .mgw/ init, migrateProjectState() idempotency, loadActiveIssue() prefix pattern, staleness detection via mock-github.cjs, and loadCrossRefs() validation — all isolated in tmp directories via process.cwd() override. Also includes vitest infrastructure (vitest.config.js, test/setup.js, test/loadFixture.js, test/fixtures/github/) from PRs #247 and #260 required to run the test suite. Co-authored-by: Stephen Miller <Stephen@betterbox.pw> Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
Closes #249
Configures vitest as the test runner for the v6 Local Testing & Simulation Framework (Phase 47: Mock Infrastructure). Adds test/setup.js for automatic mock activation, a loadFixture(name) helper, and vitest-based npm scripts.
Phase Context: Phase 47 of 4 in milestone v6 — Local Testing & Simulation Framework
GSD Route: plan-phase (quick-full execution)
Changes
package.jsonvitest ^2.0.0devDependency;npm test→vitest run; newtest:watchandtest:nodescriptsvitest.config.js.test.js, exclude.test.cjstest/setup.jstest/loadFixture.jsloadFixture(name)reads from test/fixtures/; namespaced paths supportedMock Compatibility
test/setup.jsuses conditionalrequire()withtry/catchfor bothlib/mock-github.cjs(PR #258) andlib/mock-gsd-agent.cjs(PR #259). The vitest infrastructure is fully functional before those PRs merge — tests run without errors and mocks auto-activate once the dependencies land.Script Compatibility
Existing node:test based
*.test.cjsfiles are preserved and accessible vianpm run test:node. The vitestincludepattern targets.test.jsand.spec.jsonly, with.test.cjsexplicitly excluded.Plan Summary (quick-10)
Task 1: Add vitest devDependency and update npm scripts in package.json
Task 2: Create vitest.config.js with setupFiles, node environment, include/exclude patterns
Task 3: Create test/setup.js with conditional mock activation (beforeEach/afterEach)
Task 4: Create test/loadFixture.js with loadFixture(name) helper and FIXTURES_DIR export
All 4 tasks completed in commit 0ef8314.
Test Plan
npm run test:node— existing node:test suite passes unchangednpm test— runs vitest (no vitest tests yet, exits 0 with "No test files found")npm run test:watch— vitest starts in watch modetest/setup.jsauto-activates both mocks in vitest testsloadFixture('github/issue-view')resolves totest/fixtures/github/issue-view.jsonloadFixture('agents/gsd-planner')resolves totest/fixtures/agents/gsd-planner.jsonloadFixture('nonexistent')throws descriptive errorDependencies
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