Property Based Testing
Property Based Testing is a software testing methodology where tests are defined by specifying properties or invariants that should hold true for a wide range of inputs, rather than by providing specific example inputs and expected outputs. It uses automated tools to generate random or systematic test data, run the tests, and shrink failing cases to minimal examples. This approach helps uncover edge cases and bugs that might be missed in traditional example-based testing.
Developers should learn Property Based Testing when building robust, high-quality software, especially in domains like data processing, financial systems, or compilers where correctness is critical. It is particularly useful for testing functions with complex input domains, stateful systems, or when you need to ensure invariants hold across many scenarios, as it can reveal subtle bugs and improve test coverage with less manual effort.