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feat: Implement Cypress E2E testing suite for Sauce Demo purchase flow #7

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@erodm09 erodm09 commented Aug 26, 2025 •
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What did you build?

Edgar's Cypress E2E Testing Implementation

Architecture & Design

  • Tiny POM: Clean, maintainable structure without over-engineering
  • Custom Commands: Reusable test flows for consistency and maintainability
  • Utility Functions: Centralized logic for complex operations
  • Fixture-Driven Data: Zero hardcoded values for flexibility

Testing Approach

  • 10 Atomic Tests: Single responsibility design for clear failure isolation
  • Business-Focused Assertions: Verify user outcomes, not implementation details
  • Comprehensive Coverage: All requirements + edge cases + form validation
  • Data-Driven Approach: Efficient testing of all sorting options

Technical Implementation

  • Modern Tooling: ESLint v9, optimized Cypress configuration
  • Robust Error Handling: Input validation, visibility checks, multiple verification strategies
  • Professional Quality: Clean organization, strategic comments, consistent naming

Maintainability

  • Scalable Architecture: Easy to extend and maintain
  • Team Collaboration: Clear structure for any new team members or collaborators
  • Environment Flexibility: Fixture-driven data supports multiple environments

Future Enhancements (With More Time)

  • Visual Regression Testing: Screenshot comparisons for UI consistency
  • Performance Metrics: Load time assertions for business performance
  • Accessibility Testing: Screen reader compatibility for inclusive UX
  • API Testing Integration: Backend verification for end-to-end business flows
  • Cross-Browser Testing: Multiple browser support for consistent experience
  • CI/CD Pipeline: Automated test execution for business quality gates

See CYPRESS_IMPLEMENTATION.md for further technical details.

Thank you for the time and looking forward to any feedback!

Which task did you choose?

  • Cypress
  • Postman

Thank you for sharing your work and process with us!

Edgar Rodriguez added 12 commits August 26, 2025 13:41
feat: Add Cypress configuration and dependencies
268ea9f 
- Configure Cypress with optimized settings and retries
- Add ESLint v9 flat config for code quality
- Update package.json with linting scripts and proper deps
- Set up professional development environment
feat: Add test data fixtures for maintainable testing
f2a0390 
- users.json: Test user credentials for different scenarios
- products.json: Product names, sort options, page titles, messages
- checkout-data.json: Address data for various test scenarios
- Eliminates all hardcoded values for maintainability
feat: Add utility functions for robust testing
e3edf6c 
- slugify.js: Dynamic selector generation for product elements
- sortVerifier.js: Complex sorting verification logic
- businessAssertions.js: Business-focused assertions over implementation details
- Centralizes complex logic for maintainability and reusability
feat: Implement Tiny Page Object Model for maintainable tests
1796d46 
- LoginPage: Authentication selectors and actions
- InventoryPage: Product sorting, cart operations, sorting verification
- CartPage: Cart verification and checkout navigation
- CheckoutPage: Form handling with error handling and validation
- Tiny POM approach: Structure without over complication
feat: Add custom Cypress commands for reusable test flows
6a73ab4 
- cy.login(): Authentication flow encapsulation
- cy.sortProducts(): Product sorting with verification
- cy.addToCart(): Cart operations
- cy.checkoutFlow(): Complete checkout process
- Encapsulates business logic for maintainability and reusability
feat: Implement comprehensive test suites with TRUE atomic testing
a921887 
- purchase-flow.cy.js: 10 atomic tests covering all required steps
- checkout-edge.cy.js: Edge case handling for checkout scenarios
- Each test has single responsibility
- Business-focused assertions over other implementation details
- Data-driven approach for sorting parts
docs: Add comprehensive implementation documentation
8b1c4f9 
- Architecture overview with Tiny POM + Custom Commands + Utilities
- Test coverage analysis and atomic tests principles usage
- Bugs found and workarounds implemented
- Design decisions and tradeoffs explained
- Enough documentation for code review and maintenance
docs: Refine implementation documentation for clarity
57717c4 
-Simplify language while maintaining technical accuracy
- Focus on practical implementation details
refactor: Refine purchase flow test comments for clarity
fa8873b 
- Simplify language
- Focus on practical implementation details
- Maintain clear test structure and atomic principles
refactor: Refine checkout edge test comments for consistency
9f3908c 
- Update comment style to match refined approach
- Maintain clear test structure and purpose
- Ensure consistency across all test files
fix: Resolve method name mismatch in custom commands
96f9779 
- Fix verifyCartBadgeCount calling correct InventoryPage method
- Fix verifyProductsSorted calling correct InventoryPage methods
refactor: Streamline checkout edge test
4ce86b6 
- Ensure consistency with the approach across all test files
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