I have a test case that mock a static method of java.lang.System class: But when I run the test, I got this error: org.mockito.exceptions.base.MockitoException: It is not possible to mock static methods of java.lang.System to avoid interfering with class loading what leads to infinite loops Why does this happ…
Tag: mocking
Unit testing with inject annotation
How do I unit test a class that uses @inject annotation:class A{ I am new to unit testing and having troubles testing this function because when calling b.funcInClassB() it throws NullPointerException because b is null. I wrote the following test: Answer I figured it out:
lateinit property mock object has not been initialized
I’m trying to initialize (by mocking) two objects with the annotation @MockBean It seems only to work if i call the method mock(className), but since i want to use the mocked class on multiple methods i don’t want to keep repeating the same code in my test methods. This is my test class: I donR…
How to create an argument captor for a Map object in mockito in java?
How to create an argument captor for Map<String, SomeCustomClass>? I have the code that follows the following pattern: And I want to test if the method doSomethingSubClass(mapSb) was called, whereby I need to be able to check with what argument it was called. For this purpose I have the following unit t…
Is there an equivalent of verifyZeroInteractions() for verifying an exact number of interaction with a mock object?
I would like to verify there were exactly x interactions with might db mock object. Is there something similar to the ‘verifyZeroInteractions()’ method for doing so? Answer More information is here
Mocking a singleton with mockito
I need to test some legacy code, which uses a singleton in a a method call. The purpose of the test is to ensure that the clas sunder test makes a call to singletons method. I have seen similar questions on SO, but all the answers require other dependencies (different test frameworks) – I’m unfort…
Verify a void method was called inside a private method with EasyMock/PowerMock
I have a method that looks like this (simplification) I want to write a unit test to guarantee that when x is true, method1 is called. I know I can use PowerMock’s Whitebox to set the value of x and invoke the method, but how can I confirm that method1() was called? Note that method1() is void. I am not
Set value to mocked object but get null
I have a simple class Foo to be mocked: In my unit test code, I mock it by using Mockito. I set name in mocked object, but when I call getter to get the name it returns null. Is it a Mockito specific issue or is it an convention that mocked object can’t set value? Why is that? What is
mock instance is null after @Mock annotation
I try to run this test: but I get NullPointerException for: Mockito.when(routingClientMock. what am i missing? Answer When you want to use the @Mock annotation you should use the MockitoJUnitRunner See also this tutorial.
Mockito Error Is Not Applicable for the Arguments (void)
Mockito throws error “The method when(T) in the type Stubber is not applicable for the arguments (void)” for a class I’m mocking, can’t figure out why. the code in question is: I’m aware similar questions have been asked but if somebody could explain a solution for this or point …