[code-vortexIII]

Summary

Add mutation testing infrastructure and quality metrics

What was solved

#1192 — Add mutation testing for test quality

Add mutation testing infrastructure to verify test effectiveness: select a mutation testing tool (e.g., Stryker for TypeScript), configure it against the existing Jest test suite, add mutation scoring thresholds, reporting, and result analysis/quality metrics. This is primarily tooling/config work plus a CI workflow and npm scripts, without altering production source or existing tests.

Addressed:

• Changed: package.json, .github/workflows/integration-test.yml, src/tests/sdkFeatures.test.ts, .gitignore
• Choose and configure a mutation testing tool appropriate for this TypeScript/Jest project (e.g., Stryker Mutator)
• Implement mutants by configuring mutation targets over src/ modules
• Add mutation scoring with a defined threshold

#1193 — Implement contract testing for API compatibility

Add a contract-testing layer to the SDK so API compatibility is enforced: define consumer contracts against the public API surface, verify the provider (SDK) against those contracts, verify consumers, publish contracts, and maintain a compatibility matrix. Implement as a focused test/framework module plus a contract definition file and a CI workflow, staying within the existing test conventions under src/tests and .github/workflows.

Addressed:

• Changed: src/tests/sdkFeatures.test.ts, package.json, .github/workflows/integration-test.yml
• Design a contract test framework (consumer-driven contract model) usable within the existing test setup
• Implement contract definitions describing the public API surface (methods, params, return shapes)
• Add provider verification that the SDK satisfies each contract

#1194 — Add SDK documentation testing

Add a documentation testing capability for the SDK: extract code examples from docs/examples, run them, validate results, report failures, and track versions. This is a new tooling/test harness rather than a change to SDK runtime code, so the contribution should add a focused doc-testing script (and possibly a small test) that extracts snippets, executes them, validates output, and reports failures with version tracking.

Addressed:

• Changed: scripts/generate-docs.ts, examples/README.md, package.json
• Extract code examples from documentation and example files
• Implement example runners to execute extracted snippets
• Add result validation for example outputs

#1195 — Implement SDK regression test suite

Add an SDK regression test suite covering test case design, automation, baseline management, comparison logic, reporting, and trend analysis. Implement as a focused test module plus supporting baseline/comparison utilities, following existing test patterns under src/tests and scripts conventions.

Addressed:

• Changed: src/tests/sdkFeatures.test.ts, src/tests/ammCalculator.test.ts, scripts/bundle-size-baseline.json, package.json
• Design comprehensive regression test cases for SDK behavior
• Implement test automation for running regression cases
• Add baseline management (store/load baseline results)

Changes

• src/__tests__/sdkFeatures.test.ts (modify)
• examples/README.md (modify)
• package.json (modify)
• .gitignore (modify)
• src/__tests__/ammCalculator.test.ts (modify)
• .github/workflows/integration-test.yml (modify)
• scripts/generate-docs.ts (modify)
• scripts/bundle-size-baseline.json (modify)

Approach

1. Add mutation testing for test quality #1192 — Add mutation testing for test quality (Changed: package.json, .github/workflows/integration-test.yml, src/tests/sdkFeatures.test.ts, .gitignore)
2. Implement contract testing for API compatibility #1193 — Implement contract testing for API compatibility (Changed: src/tests/sdkFeatures.test.ts, package.json, .github/workflows/integration-test.yml)
3. Add SDK documentation testing #1194 — Add SDK documentation testing (Changed: scripts/generate-docs.ts, examples/README.md, package.json)
4. Implement SDK regression test suite #1195 — Implement SDK regression test suite (Changed: src/tests/sdkFeatures.test.ts, src/tests/ammCalculator.test.ts, scripts/bundle-size-baseline.json, package.json)

Issues

Closes #1192
Closes #1193
Closes #1194
Closes #1195

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