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skills/testing-strategies/SKILL.md

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+---
+name: testing-strategies
+description: Provides test design patterns, coverage strategies, and best practices for comprehensive test suite development
+version: 1.0.0
+---
+
+## Overview
+
+This skill provides strategies for test design, test coverage, test organization, and testing best practices across different testing types and frameworks.
+
+## Test Coverage Targets
+
+- **Critical Code** (auth, payment, security): 100%
+- **Business Logic**: 90-100%
+- **Utilities**: 80-90%
+- **UI Components**: 70-80%
+- **Overall Project**: 80%+
+
+## Test Types
+
+### Unit Tests
+- Test individual functions/methods in isolation
+- Use mocks for dependencies
+- Fast execution (<1ms per test)
+- Cover happy path, edge cases, errors
+
+### Integration Tests
+- Test component interactions
+- Use real dependencies where reasonable
+- Test API endpoints, database operations
+- Moderate execution time
+
+### End-to-End Tests
+- Test complete user workflows
+- Use real system components
+- Critical paths only (slower execution)
+
+## Test Case Pattern
+
+For each function, create tests for:
+1. **Happy Path**: Normal, expected inputs
+2. **Edge Cases**: Boundary values, empty inputs
+3. **Error Cases**: Invalid inputs, exceptions
+4. **Special Cases**: Nulls, zeros, large values
+
+## Test Organization
+
+```
+tests/
+├── unit/
+│   ├── test_module1.py
+│   └── test_module2.py
+├── integration/
+│   └── test_api.py
+└── e2e/
+    └── test_workflows.py
+```
+
+## When to Apply
+
+Use when creating test suites, improving coverage, fixing failing tests, or designing test strategies.