Python Tests That Write Themselves

In plain words

Python Tests That Write Themselves is a development tool that automatically generates test code for Python projects. Launched in 2019, it is designed for Python developers who want to reduce the manual effort required to create and maintain test suites. The tool stands out by eliminating the need to write tests from scratch, allowing developers to focus on code quality while saving time on testing infrastructure.

written from the facts on this page · September 2026

From the sources

hypothesis-auto is an extension for the Hypothesis project that enables fully automatic tests for type annotated functions. In old usage examples you will see _ prefixed parameters like _auto_verify= . This was done to avoid conflicting with existing function parameters. Based on community feedback the project switched to _ suffixes, such as auto_verify_= to keep the likely hood of conflicting low while avoiding the connotation of private parameters. from hypothesis_auto import auto_test def add ( number_1 : int , number_2 : int = 1 ) -> int : return number_1 + number_2 auto_test ( add ) # 50 property based scenarios are generated and ran against add auto_test ( add , auto_runs_ = 1_000 ) #…from timothycrosley.github.io

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