behavior-analyzer-tester

GIVEN-WHEN-THEN test generation analyzes your source code to identify all behaviors, then produces complete JUnit5 unit tests following the Given-When-Then structure. Provide a file path to your Kotlin or Java class, and the Skill generates tests covering happy paths, edge cases, error handling, and async patterns without requiring mocks or custom matchers.

Yes. The Skill performs deep behavior analysis to identify and test happy paths, edge cases, error handling, state management, and asynchronous patterns. Each generated test follows strict GIVEN-WHEN-THEN templates to ensure deterministic structure and complete coverage across failure modes and success scenarios.

Yes. The Skill includes built-in templates for suspend functions and async logic, making it applicable to both synchronous and asynchronous Kotlin and Java source files. Tests are generated using vanilla JUnit5 without external dependencies or custom matchers.

The Skill integrates with existing test suites by analyzing your code to identify untested behaviors and generating GIVEN-WHEN-THEN tests for missing scenarios. You can apply generated tests selectively to scale test coverage across multiple files without rewriting your entire test suite.

The Skill analyzes Kotlin and Java source files and generates tests using vanilla JUnit5. It requires no external dependencies, custom matchers, or framework integrations—only standard JUnit5 for deterministic, scalable test generation.

GIVEN-WHEN-THEN structure promotes clarity and completeness by explicitly separating test setup (Given), action (When), and assertion (Then) phases. This template ensures deterministic test design and makes tests easier to read and maintain, particularly when covering multiple behaviors and edge cases exhaustively.