Generate High-Quality Tests Automatically with CoreStory + Claude

Our CoreStory + Claude Automated Test Generation playbook shows how to use CoreStory’s code intelligence with Claude to automatically generate comprehensive, high-quality tests—faster than most teams can outline them by hand. The result: higher coverage, earlier bug detection, and real ROI in hours, not weeks.

What you’ll get

• A complete, role-based guide with quick start, prompt library, quality checks, and advanced workflows—designed to move from “hello world” to production-ready suites.
• Clear, measurable outcomes teams can expect: ~10 minutes to 50+ test cases, 90%+ AC coverage, and 50–60% less QA time.
• A pragmatic coverage strategy (test pyramid, risk-based targets) so you invest in the right tests first.

Why this matters

CoreStory extracts the real business rules, flows, and edge cases from your code; Claude turns that understanding into runnable tests. Together they cross-reference “what should happen” (specs) against “what actually happens” (implementation), surfacing spec drift and hidden behavior for you to test.

CoreStory + Claude Code Test Ge…

How it works (in practice)

1. Analyze before you generate
   The system instructs Claude to never generate tests blindly—always query CoreStory for structure, dependencies, and business rules, then produce tests from real code context.
2. Generate in small, reviewable rounds
   Ship value fast with progressive refinement: happy paths → edge cases → error scenarios → integration/E2E.
3. Hold tests to a standard
   Descriptive names, AAA structure, specific assertions, realistic data, and explicit edge cases—every time.
4. Plan coverage with ROI in mind
   Use the pyramid and risk-tier targets (e.g., 60–70% unit, 15–25% integration, 5–10% E2E) to keep suites fast, stable, and cost-effective.

Fast start (5 minutes)

• Use Claude Code for the best flow (writes directly to your repo, runs tests inline, great for TDD).
• Configure CoreStory’s MCP once, then generate your first test file and iterate in-place.
• Typical session: generate → run → fix → re-run—without leaving the IDE.

Who it’s for

• QA leaders aiming for requirement-level coverage.
• Developers practicing TDD or securing refactors with characterization tests.
• Test automation and platform teams standardizing API, contract, and E2E suites.

What’s inside the playbook

• Main Guide: end-to-end instructions, prompts, validation, and troubleshooting.
• Prompt Templates: copy-paste prompts by role, test type, and framework.
• Decision Tree: pick the right test types for new features, legacy code, APIs, and releases.
• Edge-Case Catalog: a checklist across validation, auth, concurrency, data, and more.
• Coverage Strategy: targets by risk and product stage; tighten where it matters most.

Results to expect

Teams report faster suite creation, better alignment to acceptance criteria, and earlier discovery of implementation-specific edge cases—thanks to CoreStory-to-code cross-checks baked into the workflow.

Read the playbook and start generating tests today.
If you use Claude Code, jump straight to the 5-minute setup; if you’re on desktop or web, the same prompts and standards apply.

Support & next steps are linked in the README, including CI tips, workshops, and how to tailor the templates to your stack.