Add Unit Tests for Root Configuration Files (postcss.config.js, tailwind.config.js)

Issue Summary

Add Unit Tests for Root Configuration Files to Improve Test Coverage

Current behavior: Root configuration files (postcss.config.js and tailwind.config.js) have 0% test coverage.
Expected behavior: These configuration files should have unit tests verifying that configuration objects are exported correctly and contain required properties.

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Problem Statement

The coverage report shows that root configuration files are not covered by any tests.

What is missing?

• No tests for postcss.config.js
• No tests for tailwind.config.js

Who is affected?

• Developers modifying styling or build configuration
• QA team tracking coverage metrics
• CI/CD pipeline stability

Impact:

• Configuration errors may go unnoticed
• Overall project coverage percentage remains low
• Build or styling issues could occur due to misconfiguration

Reproduction:

1. Run coverage report
2. Observe 0% coverage for:
   • postcss.config.js
   • tailwind.config.js

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Proposed Solution

Create unit tests that:

• Import the configuration files
• Validate exported objects exist
• Validate required properties (plugins, theme, content, etc.)
• Ensure configuration loads without errors

Files to test:

• postcss.config.js
• tailwind.config.js

Testing Framework:

• Jest / Vitest

No blockers expected.

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Test-Driven Development

Acceptance Criteria (Given-When-Then)

Scenario 1: Tailwind config exports valid configuration

Given the tailwind.config.js file exists When the configuration file is imported Then it should export a valid object And the object should contain content property And the object should contain theme property

Scenario 2: PostCSS config exports plugins

Given the postcss.config.js file exists When the configuration file is imported Then it should export a configuration object And the object should contain plugins

Scenario 3: Config files load without errors

Given the configuration files When they are imported in a test environment Then no errors should be thrown

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Test Cases

Test ID	Test Description	Precondition	Test Steps	Expected Result	Priority
TC-001	Verify tailwind config exports object	File exists	1. Import config2. Check object	Config object defined	High
TC-002	Verify tailwind config has required properties	Config imported	1. Check content2. Check theme	Properties exist	High
TC-003	Verify postcss config exports plugins	File exists	1. Import config2. Check plugins	Plugins defined	High
TC-004	Verify config loads without errors	Files exist	1. Import both configs	No errors thrown	Medium

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Unit Test Requirements

Components/Functions to Test:

Module/Component	Function/Hook	Test Cases to Cover
tailwind.config.js	Config export	TC-001, TC-002
postcss.config.js	Config export	TC-003
Config Import	Import validation	TC-004

Test Assertions Required:

• Config object exists
  • Required properties exist
  • Plugins array exists
  • Config loads without errors

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Implementation Details

Files to Change

File Path	Action	Purpose
tailwind.config.js	Verify	Ensure export structure
postcss.config.js	Verify	Ensure export structure
__tests__/config/tailwind.config.test.js	Create	Unit tests
__tests__/config/postcss.config.test.js	Create	Unit tests

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Technical Considerations

• Tests should not test Tailwind or PostCSS functionality
• Only test configuration structure and exports
• Use Jest/Vitest for testing
• Keep tests simple and fast

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Testing Strategy

Manual Testing

Test Environment:

• Browser: Chrome
• Viewport: Desktop
• User Role: Developer

Manual Test Steps:

1. Run tests
2. Run coverage report
3. Verify coverage increased for config files
4. Ensure all tests pass

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Automated Testing

Unit Tests:

• Config export tests
  • Property validation tests
  • Import tests
  • Error handling tests

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Test Data Requirements

const mockConfig = { content: [], theme: {}, plugins: [] }

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Definition of Done

• Acceptance criteria met
  • All test cases passing
  • Unit tests written
  • Coverage for config files reaches 100%
  • Code reviewed
  • No console errors
  • ESLint/Prettier checks pass
  • Documentation updated if needed

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