A unit test is a function or method, which invokes a unit of module in software and checks assumptions about the system that the developer has in mind. Unit test helps the developer to test the logical functionality of any module.
In other words, a unit is the testable piece of software. It can have more than one input and normally a single output. Sometimes, we treat a module of a system as a unit.
Unit test is only relevant to developers who are closely working with the code. A unit test is only applicable to test logical piece of the code. Illogical code would not be tested with the use of unit testing. For example, getting and setting values in the text field will not be considered in logical code.
Usually, first unit test is harder to write for any developer. First test requires more time for any developer. We should always ask questions before writing the initial unit test. For example, should you use an already available unit test framework or write your own custom...