Unit Test Suite Forge

Unit Test Suite Forge helps you generate focused unit tests from an implementation or behavior description. It is designed for developers who want unit test generation that covers happy paths, edge cases, and failure modes without manual boilerplate. The prompt pushes the model to reason about inputs, outputs, side effects, and the framework-specific testing style before writing code.

This template is useful for backend engineers, library maintainers, and QA-minded developers who want stronger confidence before merging changes. It supports common test frameworks and can be adapted for Jest, Pytest, JUnit, NUnit, or Go test. The output is especially valuable when you need edge case coverage around null values, exceptions, boundary conditions, and dependency mocking. It can also help junior developers learn what a good test suite looks like.

To customize, paste the function or class into the {{CODE_UNDER_TEST}} variable and list the behaviors you care about in {{TEST_PRIORITIES}}. Add your testing framework and mocking library so the model uses the right syntax. If you want more rigor, ask for setup and teardown sections, parameterized tests, and a brief rationale for each case. That gives you a repeatable test scaffolding workflow that saves time while improving coverage.