Assert.assertEquals Explained: Unit Testing Guide

The Assert.assertEquals method is used to verify if the actual value is equal to the expected value. It is commonly used in unit testing to validate the return results of a method. The usage of the method is as follows:

Assert.assertEquals(expected, actual);

Expected is the expected value and actual is the actual value. If the expected value is equal to the actual value, the test passes; otherwise, the test fails. In testing frameworks like JUnit, a test failure typically results in an AssertionError exception being thrown.