Updated : Jan 05, 2022 in Automotive


In the past, we’ve talked extensively about JMockit and Mockito. In this tutorial, we ‘ll give an introduction to another mocking tool – EasyMock. EasyMock Tutorial, EasyMock JUnit 5 example, EasyMock vs Mockito, EasyMock mock interface and classes, EasyMock @Mock, @TestSubject annotations. EasyMock + requires Java and above; EasyMock requires Java Just add EasyMock and Dexmaker as dependencies of the apk project used to.

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However, for a partial mock, if these methods are not mocked explicitly, they will have their normal behavior instead of EasyMock default’s one.

The replay method is called to make the Mock object available. Here is the test without the definition of the Mock Object: Positive return values are a vote for removal.

Obviously the test depends on the provided methods. During partial mocking, if your method under test is calling some private methods, you will need to test them as well since you cannot easymoci them.

EasyMock Tutorial

The following description demonstrates the usage of EasyMock. It also enhances communication in tutoriall TestCase for it exposes the expected calls on the MockObject right where you need it. Portions in the application will be represented as an enumeration. It has a method that returns the stock price of the given stock name. The instantiator is kept statically so it will stick between your unit tests. However, this case should be quite rare. The implementation is straightforward:.

Now addDocument should do stuff and then notify a dependency. Sometimes we would like our mock object to return a value or throw an exception that is created at the time of the actual call. Specifying Return Values For specifying return values, we wrap the expected call in expect T value and specify the return value with the method andReturn Object tktorial on the object returned by expect T value. The names will be shown in exception failures.


This can prevent deadlocks in some rare situations. Since we setup the stock price of EBAY as You can download the complete source code from Github. Report Attrition rate dips in corporate India: A first attempt may look like: If you use Maven, the final required dependencies will look like this: Verification A first verification There is one error that we have not handled so far: Dierk Koenig, Canoo AG.

If we specify behavior, we would like to verify that it is actually used. As an example, we check the workflow for document removal.

JUnit & EasyMock tutorial with a code examples

On top of that, since EasyMock 3. It mainly aims at allowing to use a legacy behavior on a new version. This interface contains two methods: Good knowledge and understanding of Java Programming language is essential for understanding the tutoiral of EasyMock. The code then looks like: If we would like to state this explicitely, once or times 1 may be used. This can be change for a given mock if makeThreadSafe mock, false is called during the recording phase.

The pros easymoco that the arguments found in EasyMock. These methods will still be called when serializing the mock and might fail. When you use matchers in a call, you have to specify matchers for all arguments of the method call. You can do and someMatcher The failure occurs immediately at the first method call exceeding the limit: These easymck are meant to be used to extend EasyMock so they usually don’t need to be imported.


In the previous code snippet you see interaction of JUnit and EasyMock. Before ; import org. Otherwise, the test would fail. All used matchers should be serializable all genuine Easymoci ones are Recorded parameters should also be serializable Multithreading During recording, a mock is not thread-safe.

EasyMock Tutorial

Now I will describe in a few words functionality of the application. Adobe Photoshop Interview Questions. EasyMock is a mock framework which can be easily used in conjunction with JUnit.

Sometimes it is desirable to define own argument matchers. Behavior A second test Let us write a second test.

Easy Mock Tutorial

We may specify the call count with the method times int times on the object returned by expectLastCall. A unit test checks the smallest part of easymok — a method or a class.

Since this blog is dedicated to the Java programming language, today I will write an article about the JUnit 4. There are a couple of predefined argument matchers available. Standalone Download the EasyMock zip file It contains the easymock You can set back the default one with setDefaultInstantiator.