Unit Testing with Mockito and JUnit5
Explore how to create effective unit tests for Spring REST API services using Mockito and JUnit5 frameworks. Learn to mock dependencies like repositories and validators, implement test cases with given-when-then structure, run tests with Gradle, and verify service methods to ensure correctness.
We'll cover the following...
TodoTypeServiceTest
Let’s start with unit testing TodoTypeService. We’ll create the TodoTypeServiceTest in the io.educative.unit package under the src/test/java directory.
We’ve used the Mockito class from the Mockito framework to mock the TodoTypeRepository and Validator classes required to create the instance of the TodoTypeService class.
Now, we can add a simple unit test named whenReadTodoType_thenReturnTodoType to verify the findByCode method of the TodoTypeService class using the
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