chore: rename file to make it more descriptive

Author: amanabiy

AGENTS.md

@@ -25,7 +25,7 @@ The dev server runs at `http://localhost:8080`. Pages are served from `pages/<co
 
 For component structure, props, events, and refs, see docs/COMPONENT_CONVENTIONS.md.
 For design tokens, CSS rules, and RTL support, see docs/STYLING.md.
-For running tests and configs, see docs/TESTING.md.
+For running tests and configs, see docs/RUNNING_TESTS.md.
 For writing tests and test utils, see docs/WRITING_TESTS.md.
 For prettier, stylelint, and eslint (`npm run lint`), see docs/CODE_STYLE.md.
 For dev/test pages and running in the browser, see docs/DEV_PAGES.md.

docs/RUNNING_TESTS.md

@@ -0,0 +1,34 @@
+# Running Tests
+
+## Quick Reference
+
+```
+npm test               # all tests
+npm run test:unit      # unit + build-tool tests
+npm run test:integ     # integration tests (starts dev server automatically)
+npm run test:motion    # motion tests (starts dev server automatically)
+npm run test:a11y      # accessibility tests
+```
+
+The npm scripts use gulp tasks that handle env vars (`TZ=UTC`, `NODE_OPTIONS=--experimental-vm-modules`) and dev server lifecycle automatically.
+
+## Targeting Specific Files
+
+Call jest directly with the appropriate config:
+
+```
+# Unit
+TZ=UTC node_modules/.bin/jest -c jest.unit.config.js src/button/__tests__/button.test.tsx
+
+# Integration (requires dev server running via `npm start`)
+NODE_OPTIONS=--experimental-vm-modules node_modules/.bin/jest -c jest.integ.config.js src/input/__integ__/
+
+# Motion (requires dev server running via `npm start`)
+NODE_OPTIONS=--experimental-vm-modules node_modules/.bin/jest -c jest.motion.config.js src/flashbar/__motion__/
+```
+
+## Updating Snapshots
+
+```
+TZ=UTC node_modules/.bin/jest -u -c jest.unit.config.js src/__tests__/snapshot-tests/
+```