Can Mockito mock final classes?
Table of Contents
Can Mockito mock final classes?
Mockito by default is able to mock interface, abstract class, and normal class, but it cannot mock the final class and final method.
What is a final class?
A final class is a class that can’t be extended. Also methods could be declared as final to indicate that cannot be overridden by subclasses. Preventing the class from being subclassed could be particularly useful if you write APIs or libraries and want to avoid being extended to alter base behaviour.
How do you add a mock maker inline?
Option 2: Adding a file to enable the Mock maker inline Create a resources directory in your test directory if you do not have one. In resources create the directory mockito-extensions and in that directory the file org. mockito. plugins.
How do you use PowerMockito?
To use PowerMock with Mockito, we need to apply the following two annotations in the test: @RunWith(PowerMockRunner. class): It is the same as we have used in our previous examples. The only difference is that in the previous example we have used MockitoUnitRunner.
Can final method be mocked?
Cannot mock final methods – their real behavior is executed without any exception. Mockito cannot warn you about mocking final methods so be vigilant.
How do I make my class final?
A class can be made final by using the final keyword. The final class cannot be inherited and so the final keyword is commonly used with a class to prevent inheritance.
What is the final class in Java with example?
Final Class When a class is declared as final, we can’t extend it. It’s called a final class. The perfect example of the final class in JDK is the String class. If you have to create an immutable class, you have to mark it as a final class.
What is the difference between Mockito core and Mockito all?
mockito-core only contains mockito classes, while mockito-all contain mockito classes as well as some dependencies, one of them being hamcrest. “mockito-all” distribution has been discontinued in Mockito 2.
How do you mock a final class with PowerMock?
2 Answers
- Use the @RunWith(PowerMockRunner. class) annotation at the class-level of the test case.
- Use the @PrepareForTest(ClassThatContainsStaticMethod. class) annotation at the class-level of the test case.
- Use PowerMock. mockStatic(ClassThatContainsStaticMethod. class) to mock all methods of this class.
What are final methods?
Final Methods Use the final keyword in a method declaration to indicate that the method cannot be overridden by subclasses. The Object class does this; some of its methods are final, and some are not.
How do you write a final class in Java?
How do you call a final class method in Java?
We can declare Java methods as Final Method by adding the Final keyword before the method name. The Method with Final Keyword cannot be overridden in the subclasses. The purpose of the Final Method is to declare methods of how’s definition can not be changed by a child or subclass that extends it.
Why do we use final class in Java?
The main purpose of using a class being declared as final is to prevent the class from being subclassed. If a class is marked as final then no class can inherit any feature from the final class. You cannot extend a final class. If you try it gives you a compile time error.
How do you call a final class in Java?
Is Mockito all deprecated?
“mockito-all” distribution has been discontinued in Mockito 2.
How do you mock a static final class?
The following steps are required to mock calls to static methods:
- Use the @RunWith(PowerMockRunner. class) annotation at the class-level of the test case.
- Use the @PrepareForTest(ClassThatContainsStaticMethod. class) annotation at the class-level of the test case.
- Use PowerMock. mockStatic(ClassThatContainsStaticMethod.
