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commands/track-regression.md

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+---
+description: Track and run regression tests for existing functionality
+shortcut: reg
+---
+
+# Regression Test Tracker
+
+Track critical tests and ensure new changes don't break existing functionality.
+
+## Purpose
+
+Maintain stability by:
+- **Tracking critical tests** - Mark tests for regression suite
+- **Automated execution** - Run before deployments
+- **Change impact analysis** - Which tests affected by changes
+- **Test history** - Track pass/fail over time
+- **Flaky test detection** - Identify unreliable tests
+
+## Usage
+
+```bash
+/track-regression                    # Run regression suite
+/track-regression --mark             # Mark current test as regression
+/track-regression --history          # Show test history
+/reg                                 # Shortcut
+```
+
+## Regression Suite Management
+
+Tag tests as regression tests:
+
+```javascript
+// Jest
+describe('User Login', () => {
+  it('[REGRESSION] should login with valid credentials', async () => {
+    // Critical login test
+  });
+});
+
+// pytest
+@pytest.mark.regression
+def test_payment_processing():
+    # Critical payment test
+    pass
+```
+
+## Report Format
+
+```
+Regression Test Report
+======================
+Date: 2025-10-11
+Suite: Full Regression
+Tests: 45 critical tests
+Duration: 3m 42s
+
+Results: 44/45 passed (97.8%)
+
+FAILED:
+   test_checkout_with_coupon
+     Last passed: 2025-10-09
+     Failures: 2 consecutive
+     Introduced by: commit abc123f
+
+Flaky Tests Detected:
+  ️ test_email_delivery
+     Pass rate: 85% (17/20 recent runs)
+     Recommendation: Investigate timing issues
+
+Impact Analysis:
+  Changed files: src/api/orders.js
+  Potentially affected: 8 tests
+  Recommended: Run full order test suite
+```
+
+## Best Practices
+
+- Tag critical business flows
+- Run before every deployment
+- Keep regression suite fast (<5 min)
+- Monitor for flaky tests
+- Update when requirements change