Test Generation Workflow

Overview

The Test Generation Workflow leverages AI to create thorough test coverage for your codebase. By analyzing function signatures, business logic, and code paths, AI can generate unit tests, integration tests, and edge case scenarios that would take humans significantly longer to write.

Problem

Writing comprehensive tests is time-consuming and often deprioritized: - Developers skip tests due to time pressure - Edge cases are frequently overlooked - Test coverage is inconsistent across the codebase - Maintaining tests as code evolves is burdensome

Solution

Integrate AI-powered test generation into your development workflow: - Generate initial test scaffolding from function signatures - Identify edge cases through code analysis - Create data fixtures and mocks automatically - Maintain test coverage as code changes AI handles the repetitive aspects of test writing while developers focus on verifying business logic correctness.

Implementation

Code Examples

import { calculateDiscount } from './pricing';

describe('calculateDiscount', () => {
  // Happy path tests
  describe('valid inputs', () => {
    it('applies percentage discount correctly', () => {
      expect(calculateDiscount(100, { type: 'percentage', value: 10 }))
        .toBe(90);
    });

    it('applies fixed discount correctly', () => {
      expect(calculateDiscount(100, { type: 'fixed', value: 15 }))
        .toBe(85);
    });
  });

  // Edge cases
  describe('edge cases', () => {
    it('handles zero price', () => {
      expect(calculateDiscount(0, { type: 'percentage', value: 10 }))
        .toBe(0);
    });

    it('prevents negative final price', () => {
      expect(calculateDiscount(10, { type: 'fixed', value: 20 }))
        .toBe(0);
    });

    it('caps percentage at 100%', () => {
      expect(calculateDiscount(100, { type: 'percentage', value: 150 }))
        .toBe(0);
    });
  });

  // Error handling
  describe('error handling', () => {
    it('throws on invalid discount type', () => {
      expect(() => calculateDiscount(100, { type: 'invalid' as any, value: 10 }))
        .toThrow('Invalid discount type');
    });
  });
});

Best Practices

• Always review generated tests for logical correctness
• Use AI to identify edge cases, but verify they are relevant
• Maintain a balance between generated and hand-written tests
• Update test prompts as your testing patterns evolve
• Use generated tests as a starting point, not the final product

Considerations