Microsoft Open Sources code-testing-generator: a Polyglot Unit-Test Agent That Hits 92.1% Task Completion Versus 78.9% for Stock Copilot

Microsoft has open sourced code-testing-generator, a polyglot unit-test agent in the MIT-licensed dotnet/skills repository that reads a repository to detect language, test framework, conventions, and build/test commands before planning, writing, running, and validating tests. On Microsoft's internal 152-task benchmark, it completed 140 tasks (92.1%) versus 120 (78.9%) for stock GitHub Copilot on the same model, with gains concentrated in vague prompts and diff-targeted requests.

Microsoft has open sourced code-testing-generator, a polyglot unit-test agent shipping in the MIT-licensed dotnet/skills repository. It reads a repository before writing anything — detecting the language, test framework, existing conventions, and the real build and test commands — then plans, writes, runs and validates the tests it produces. On Microsoft's internal 152-task benchmark it completed 140 tasks against 120 for stock GitHub Copilot on the same model, with the gain concentrated almost entirely in vague prompts and diff-targeted requests. The post Microsoft Open Sources code-testing-generator: a Polyglot Unit-Test Agent That Hits 92.1% Task Completion Versus 78.9% for Stock Copilot https://www.marktechpost.com/2026/08/06/microsoft-open-sources-code-testing-generator/ appeared first on MarkTechPost https://www.marktechpost.com .