Code Smell 254 - Mystery Guest

You assert that something happened, but why?

TL;DR: Be explicit when creating tests to ensure clarity and maintainability

• Readability




• Coupling to external databases, global state or singletons, static methods or external services




• Maintenance Difficulty




• Debugging Complexity




• Hidden Dependencies

1. Be Explicit




2. Inline the setup




3. Use dependency Injection




4. Use mocking with caution

Your test depends on external data or configurations not immediately visible within the test itself.

This obscures the test’s setup, making it difficult for someone reading …

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