Introduction to Assertions

An assertion is a fundamental part of any automated test setup. We use it to verify that the outcome of the functionality we test meets our expectations. For example, if we test a method that performs calculations and returns a numeric value, we can use an assertion to verify that the expected value is returned for the specified set of parameters.

There are several different types of assertions, such as xUnit, used by automated testing frameworks. We can use assertions to verify if the output value matches the expected value or if the size of the collection is modified as expected. Moreover, we can use assertions ...