How do I write property-based tests?

Property-based testing is a testing methodology that focuses on verifying the properties and characteristics of a program instead of testing individual scenarios. This approach allows you to define general rules that the code should adhere to and then automatically generates a wide range of test cases to confirm these properties. In C++, you can utilize libraries like RapidCheck or Catch2 to implement property-based testing.

Example of Property-Based Testing in C++

#include #include int add(int a, int b) { return a + b; } TEST_CASE("Addition is commutative") { rc::check("a + b = b + a", [](int a, int b) { RC_ASSERT(add(a, b) == add(b, a)); }); } TEST_CASE("Addition is associative") { rc::check("a + (b + c) = (a + b) + c", [](int a, int b, int c) { RC_ASSERT(add(a, add(b, c)) == add(add(a, b), c)); }); }

Property-based testing C++ Test Automation RapidCheck Catch2

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