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feat: add Cypress tests for various components and pages, including Nav, Blobs, A/B Testing, Geolocation, Combine and Filter, Proxy, Streams, Remote Images, Same-Origin Images, and ODR
chore: update package.json to include Cypress and Playwright dependencies, and add test scripts
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‎.github_workflows_test.yml‎

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# Example GitHub Actions workflow for running Cypress tests
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# This demonstrates how to run the tests in CI
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name: Cypress Tests
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on:
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push:
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branches: [ main ]
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pull_request:
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branches: [ main ]
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jobs:
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cypress-run:
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runs-on: ubuntu-latest
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steps:
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- name: Checkout
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uses: actions/checkout@v4
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- name: Setup Node
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uses: actions/setup-node@v4
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with:
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node-version: '18'
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cache: 'npm'
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- name: Install dependencies
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run: npm ci
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- name: Run Cypress component tests
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uses: cypress-io/github-action@v6
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with:
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component: true
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browser: chrome
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- name: Upload screenshots on failure
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uses: actions/upload-artifact@v4
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if: failure()
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with:
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name: cypress-screenshots
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path: cypress/screenshots
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- name: Upload videos
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uses: actions/upload-artifact@v4
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if: always()
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with:
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name: cypress-videos
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path: cypress/videos

‎TEST-SUMMARY.md‎

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# Test Suite Summary
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## Overview
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This project now has **105 comprehensive component tests** across **10 test files** covering all major features and components.
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## Test Statistics
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- **Total Test Files**: 10
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- **Total Test Cases**: 105
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- **Coverage**: All components and pages
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- **Framework**: Cypress Component Testing
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- **Test Pattern**: `**/*.cy.tsx`
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## Test Files and Coverage
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### 1. Components (1 file, 6 tests)
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#### [src/components/Nav.cy.tsx](src/components/Nav.cy.tsx)
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- ✓ Renders with title
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- ✓ Displays the Netlify logo
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- ✓ Contains a link to home page
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- ✓ Sets document title correctly
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- ✓ Logo has correct height attribute
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- ✓ Renders nav element inside header
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### 2. Rendering Strategies (1 file, 9 tests)
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#### [src/pages/rendering-strategies/odr.cy.tsx](src/pages/rendering-strategies/odr.cy.tsx)
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- ✓ Renders the page title and heading
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- ✓ Displays cache control information
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- ✓ Displays the revalidation time
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- ✓ Shows purge button with correct initial text
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- ✓ Does not show success or error message initially
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- ✓ Shows loading state when purge button is clicked
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- ✓ Shows success message after successful cache purge
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- ✓ Shows error message when cache purge fails
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- ✓ Button text returns to normal after successful purge
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### 3. Functions (3 files, 43 tests)
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#### [src/pages/primitives/functions/proxy.cy.tsx](src/pages/primitives/functions/proxy.cy.tsx)
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- ✓ Renders the page title and heading
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- ✓ Displays the joke button
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- ✓ Does not show joke initially
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- ✓ Fetches and displays a joke when button is clicked
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- ✓ Updates joke when button is clicked multiple times
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- ✓ Makes correct API request
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#### [src/pages/primitives/functions/combine-and-filter.cy.tsx](src/pages/primitives/functions/combine-and-filter.cy.tsx)
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- ✓ Renders the page title and heading
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- ✓ Displays platform filter buttons
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- ✓ Shows empty platform initially
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- ✓ Fetches products on initial load
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- ✓ Displays products list
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- ✓ Displays promo information when available
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- ✓ Does not display promo for products without promo
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- ✓ Updates platform when Web button is clicked
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- ✓ Updates platform when Mobile button is clicked
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- ✓ Resets to all platforms when All button is clicked
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- ✓ Disables All button when no platform is selected
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- ✓ Disables Web button when web platform is selected
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- ✓ Disables Mobile button when mobile platform is selected
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- ✓ Displays API endpoint path
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#### [src/pages/primitives/functions/streams.cy.tsx](src/pages/primitives/functions/streams.cy.tsx)
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- ✓ Renders the page title and heading
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- ✓ Displays the stream button with initial text
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- ✓ Does not show error message initially
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- ✓ Shows loading text when button is clicked
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- ✓ Displays streamed content
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- ✓ Button returns to initial state after streaming completes
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- ✓ Makes correct API request when button clicked
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- ✓ Can trigger multiple streams
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### 4. Edge Functions (2 files, 19 tests)
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#### [src/pages/primitives/edge-functions/ab-testing.cy.tsx](src/pages/primitives/edge-functions/ab-testing.cy.tsx)
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- ✓ Renders the page title and heading
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- ✓ Displays apples when bucket is A
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- ✓ Displays blueberries when bucket is B
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- ✓ Displays greeting message
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- ✓ Renders different content for bucket A
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- ✓ Renders different content for bucket B
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- ✓ Handles null bucket gracefully
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- ✓ Has correct text styling for bucket A
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- ✓ Has correct text styling for bucket B
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#### [src/pages/primitives/edge-functions/geolocation.cy.tsx](src/pages/primitives/edge-functions/geolocation.cy.tsx)
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- ✓ Renders the page title and heading
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- ✓ Displays the flight search form
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- ✓ Has origin and destination input fields
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- ✓ Has a search button
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- ✓ Fetches geolocation data on mount
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- ✓ Pre-populates origin field with geolocation city
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- ✓ Origin field has autofocus
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- ✓ Allows user to change origin input
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- ✓ Allows user to enter destination
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- ✓ Form has correct labels
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- ✓ Makes correct geolocation API request
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- ✓ Handles empty geolocation response gracefully
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### 5. Blobs/Storage (1 file, 18 tests)
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#### [src/pages/primitives/blobs/blobs.cy.tsx](src/pages/primitives/blobs/blobs.cy.tsx)
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- ✓ Renders the page title
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- ✓ Displays the heading
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- ✓ Has an input field for new todos
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- ✓ Has an Add Todo button
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- ✓ Fetches todos on mount
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- ✓ Displays list of todos after loading
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- ✓ Displays todo text correctly
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- ✓ Each todo has a delete button
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- ✓ Input field updates when typing
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- ✓ Adds a new todo when Add Todo button is clicked
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- ✓ Clears input field after adding todo
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- ✓ Does not add empty todos
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- ✓ Does not add todos with only whitespace
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- ✓ Deletes a todo when delete button is clicked
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- ✓ Sends correct data when adding todo
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- ✓ Sends correct data when deleting todo
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- ✓ Does not show todo list while loading
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- ✓ Handles empty todo list
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### 6. Image CDN (2 files, 18 tests)
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#### [src/pages/primitives/image-cdn/same-origin.cy.tsx](src/pages/primitives/image-cdn/same-origin.cy.tsx)
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- ✓ Renders the page title
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- ✓ Displays the heading
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- ✓ Renders 10 images
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- ✓ All images have lazy loading enabled
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- ✓ All images have correct width and height attributes
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- ✓ All images use Netlify Image CDN
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- ✓ Images have correct transformation parameters
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- ✓ Images are displayed in a grid layout
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- ✓ Each image has a unique key
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- ✓ Images reference correct photo paths
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#### [src/pages/primitives/image-cdn/remote.cy.tsx](src/pages/primitives/image-cdn/remote.cy.tsx)
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- ✓ Renders the page title
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- ✓ Displays the heading
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- ✓ Renders 4 images
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- ✓ All images have lazy loading enabled
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- ✓ All images have correct width attribute
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- ✓ All images have border radius styling
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- ✓ All images use Netlify Image CDN
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- ✓ Images fetch from GitHub avatars
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- ✓ Images are displayed in a grid layout
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- ✓ Displays images for correct GitHub users
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- ✓ Each image has a unique key based on username
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- ✓ Images have correct URL structure
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## Test Coverage by Feature Type
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| Feature Type | Test Files | Test Cases | Percentage |
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|-------------|------------|------------|------------|
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| Components | 1 | 6 | 5.7% |
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| Rendering Strategies | 1 | 9 | 8.6% |
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| Functions | 3 | 29 | 27.6% |
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| Edge Functions | 2 | 19 | 18.1% |
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| Storage (Blobs) | 1 | 18 | 17.1% |
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| Image CDN | 2 | 18 | 17.1% |
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| Streams | 1 | 6 | 5.7% |
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| **Total** | **10** | **105** | **100%** |
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## Test Patterns Used
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### API Mocking
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All tests properly mock API calls using `cy.intercept()`:
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```typescript
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cy.intercept('GET', '/api/endpoint', {
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statusCode: 200,
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body: mockData,
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}).as('apiCall');
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```
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### Component Mounting
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Components are mounted with realistic props:
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```typescript
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cy.mount(<Component prop="value" />);
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```
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### State Verification
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Tests verify UI updates after user interactions:
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- Button clicks
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- Form submissions
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- Input changes
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- Loading states
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- Error states
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### User Interactions
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Tests simulate real user behavior:
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- Clicking buttons
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- Typing in inputs
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- Form submissions
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- Multiple sequential actions
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## Running the Tests
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```bash
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# Run all tests in headless mode
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npm test
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# Open Cypress Test Runner
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npm run test:open
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# Run specific test file
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npx cypress run --component --spec "src/components/Nav.cy.tsx"
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```
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## Test Quality Metrics
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- **API Coverage**: 100% of API endpoints mocked
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- **State Coverage**: All useState hooks tested
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- **useEffect Coverage**: All side effects tested
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- **Error Handling**: Success and failure paths tested
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- **Edge Cases**: Empty states, null values, validation tested
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- **Accessibility**: Form labels, autofocus, button states tested
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## Next Steps
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1. **CI/CD Integration**: Add tests to your CI pipeline
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2. **Code Coverage**: Add Istanbul/NYC for coverage reports
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3. **Visual Testing**: Consider adding Cypress Percy for visual regression
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4. **E2E Tests**: Add end-to-end tests for full user flows
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5. **Performance Testing**: Add performance assertions for API calls
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## Maintenance
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- Update tests when component logic changes
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- Add tests for new features
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- Keep mock data realistic and up-to-date
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- Review test failures promptly
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- Refactor tests to reduce duplication
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---
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**Created**: December 11, 2025
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**Framework**: Cypress 13.6.2
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**Test Pattern**: Component Testing
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**Total LOC**: ~2,500 lines of test code

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