Write tests that are well-organized, maintainable, and reflect real usage patterns. Test names should describe behavior and requirements rather than implementation details. Group related tests under appropriate describe blocks and avoid redundant test cases.

Key principles:

Example of good test organization:

describe('CheckableTag', () => {
  it('should render icon when provided', () => {
    // Test icon rendering behavior
  });
  
  it('should handle click events correctly', () => {
    // Test click behavior
  });
  
  it('should support custom classNames and styles', () => {
    // Test styling behavior
  });
});

This approach makes tests easier to navigate, maintain, and ensures they accurately reflect how components are actually used in applications.