Test Detect

Automatically detect the testing framework in the current project and run the right tests.

Workflow

Step 1: Detect the testing framework

Check for these files in order (first match wins):

Check	Framework	Run Command
vitest.config.* exists OR vitest in devDeps	Vitest	npx vitest run
jest.config.* exists OR jest in devDeps	Jest	npx jest
playwright.config.* exists	Playwright	npx playwright test
cypress.config.* exists	Cypress	npx cypress run
pytest.ini or conftest.py or pyproject.toml with [tool.pytest]	pytest	python -m pytest
go.mod exists	Go test	go test ./...
Cargo.toml exists	Rust/cargo	cargo test
mix.exs exists	ExUnit	mix test
Gemfile with rspec	RSpec	bundle exec rspec
package.json has scripts.test	npm test	npm test

Report the detected framework before proceeding.

Step 2: Parse arguments

Check $ARGUMENTS for the mode:

• No arguments or "all": Run the full test suite (Step 3)
• File path (e.g., src/auth/login.ts): Run tests for that file (Step 4)
• "generate" + file path (e.g., generate src/utils.ts): Generate tests (Step 5)

Step 3: Run full test suite

Run the detected test command. After completion:

• Report total tests, passed, failed, skipped
• If tests fail, show the first 3 failure messages with file:line references
• Suggest: "Run /test-detect <failing-file> to investigate a specific failure"

Step 4: Run tests for a specific file

Given a source file path, find its test file:

Search strategy (try in order):

• __tests__/<filename>.test.<ext> (Jest convention)
• <filename>.test.<ext> (co-located)
• <filename>.spec.<ext> (alternative convention)
• test/<filename>_test.<ext> (Go/Python convention)
• tests/test_<filename>.<ext> (pytest convention)
• <filename>_test.go (Go convention)

Use Glob to find matches. If found, run only that test file:

Framework	Command
Vitest	npx vitest run <test-file>
Jest	npx jest <test-file>
Playwright	npx playwright test <test-file>
pytest	python -m pytest <test-file>
Go	go test -run <TestName> ./<package>/
Cargo	cargo test <test_name>

If no test file found, ask: "No tests found for this file. Want me to generate them? Run /test-detect generate <file>"

Step 5: Generate tests

Read the source file and analyze:

• Identify all exported functions/classes/components
• Determine the appropriate test patterns for the framework
• Generate a test file with:

- Import statements

- describe block per function/class

- it/test blocks covering: happy path, edge cases, error cases

- Framework-appropriate assertions and mocking

Save to the conventional location for the detected framework:

• Jest/Vitest: __tests__/<filename>.test.<ext> or <filename>.test.<ext> (match existing convention)
• pytest: tests/test_<filename>.py
• Go: <filename>_test.go (same directory)
• RSpec: spec/<filename>_spec.rb

Show the generated file path and ask if the user wants to run the new tests.

Tips

• If multiple frameworks are detected (e.g., Vitest for unit tests + Playwright for e2e), mention both and default to the unit test framework
• For monorepos, detect from the closest config file to the current directory
• If package.json has both test and test:unit/test:e2e scripts, prefer the specific one when context is clear