/write-tests

Write tests for: $ARGUMENTS

Follow these conventions:

• Use Jest with TypeScript
• Use `describe` / `it` blocks (not `test()`)
• Group by behaviour, not by method name
• Mock external services (database, APIs) - never hit real endpoints
• Include edge cases: empty input, null, boundary values, error paths
• Use descriptive test names: `it('returns 404 when user does not exist')`

Structure:

describe('ComponentOrFunction', () => {
  describe('when condition', () => {
    it('should expected behaviour', () => {
      // Arrange → Act → Assert
    });
  });
});

After writing the tests, run `npm test` to verify they pass.