What is EasyMock capture?

Create Capture instance using EasyMock. newCapture() method. Use capture(Capture) argument matcher with expect to match any argument and also capture it for later use. If you want to capture primitive types, there are specific methods such as captureInt() , captureBoolean() etc.

How does EasyMock capture work?

Simple capture EasyMock has a feature called Capture which allows us to capture the arguments with which mocks are called, such that we can verify the argument values after having exercised the object being tested. It works something like this: Player player1Mock = createMock(Player.

What does EasyMock verify do?

Summary. EasyMock verify() method is used to make sure that all the stubbed methods are being utilized and there are no unexpected calls. The behavior for unexpected calls changes for nice mock objects where it doesn’t throw any error. EasyMock verify() method is very similar to Mockito verify() method.

How do you mock a void in EasyMock?

When we use expectLastCall() and andAnswer() to mock void methods, we can use getCurrentArguments() to get the arguments passed to the method and perform some action on it. Finally, we have to return null since we are mocking a void method.

What is replay EasyMock?

With EasyMock, when you “expect” you are actually record the desired fake/mocked behavior. So when you want to inject this mocked behavior onto a test runner (e.g. JUnit) you would “replay” your records.

What is Argumentcaptor Mockito?

The AgrumentCaptor is a class that is defined in the org. mockito package. It is used to capture argument values for further assertions. Because with stubbing, it reduces the test readability as captor is defined outside the assert (verify or then) block. …

How do you use JUnit test cases with EasyMock?

4. Tutorial: Using Easy Mock and JUnit

1. 4.1. Create project and classes. Create a new Java Project called com. vogella. testing.
2. 4.2. Create tests. Create a new test source folder in your project. Create a new test for IncomeCalculator and place the new test class in this folder.

How do you throw an exception in EasyMock?

For specifying exceptions (more exactly: Throwable s) to be thrown, the object returned by expectLastCall() and expect(T value) provides the method andThrow(Throwable throwable) . The method has to be called in record state after the call to the Mock Object for which it specifies the Throwable to be thrown.

How do you mock with EasyMock?

It uses the basic EasyMock concepts of expect, replay and verify.

1. Create mock instances for the objects you need to mock the method calls on, in this case the service and the stuffGetter .
2. Write expectations for the method calls using the expect method.
3. Replay the mock objects, in this case replay both of them.

How do you mock a method on EasyMock?

How does EasyMock test private methods?

EasyMock Tutorials Sometimes we want to test a method that is using a private method. We can create the mock object using EasyMock but EasyMock doesn’t allow us to mock private methods. So we can use PowerMock EasyMock API extension to mock a class private methods.

Do you answer mockito?

thenReturn(T value) Sets a return value to be returned when the method is called. Answer is used when you need to do additional actions when a mocked method is invoked, e.g. when you need to compute the return value based on the parameters of this method call.

Why do I need to capture an argument In EasyMock?

Notice that I am using captureInt () in above example to capture integer arguments. EasyMock argument capture helps us in tracking and recording the arguments used with mocked methods. This can be helpful in debugging if our test cases are failing for any specific argument.

How is the same matcher used in EasyMock?

The same () matcher compares arguments using “==”, meaning it compares User instances in our case. If we don’t use any matchers, arguments are compared by default using equals (). For arrays, we also have the aryEq () matcher which is based on the Arrays.equals () method. 4. Any Matchers

How do I Capture an argument in journaldev?

Use capture (Capture) argument matcher with expect to match any argument and also capture it for later use. If you want to capture primitive types, there are specific methods such as captureInt (), captureBoolean () etc. If we capture a single argument, then we can get its value from Capture.getValue () method.

What can EasyMock be used for In JUnit?

EasyMock2 is a library that provides an easy way to create on-the-fly mock objects based on interfaces. It can be used in combination with JUnit to create simple and powerful unit tests.