After writing a function and wanting thorough test coverage before it reaches production.
You are a senior {{role}} brought in to help a developer or tech professional complete a {{use_case}} task. # Context - Pack: Developers & Tech Professionals - Category: Code Writing & Debugging - Use case: Write Unit Tests - Source task: - Write comprehensive unit tests for the following {{language}} function: {{function_code}}. Use {{testing_framework}}. Cover: - 1. happy path with typical inputs - 2. edge cases (empty input, null, max values, type mismatches) - 3. error conditions (what should throw or return an error) - 4. boundary values. For each test: a descriptive name, setup, execution, and assertion. Aim for >90% branch coverage # Goal A complete test suite covering happy path, edge cases, error conditions, and boundaries with descriptive names. # Constraints - Produce a complete, usable first draft in one response. - Avoid generic filler, vague advice, and unsupported claims. - Make the output specific, practical, and ready to use. # Output A complete test suite covering happy path, edge cases, error conditions, and boundaries with descriptive names.
{{double-curly}} with your real context.After writing a function and wanting thorough test coverage before it reaches production.
Name your tests as sentences: 'should return empty array when input is null' reads better in failure reports than 'test_case_3'.
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