Here is a first example: @Before public void setUp() { mock = mock(Collaborator. class); // 1 classUnderTest = new ClassUnderTest(); classUnderTest. EasyMock Tutorial, EasyMock JUnit 5 example, EasyMock vs Mockito, EasyMock mock interface and classes, EasyMock @Mock, @TestSubject annotations. In this post, I’m going to show you what EasyMock is and how you can use it for testing your java application.

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You also need to download the Objenesis and Cglib libraries and add these jars to your classpath. Tutprials we write tests for it, we will automaticaly test the WaterContainer class and the CoffeeContainer class. EasyMock provides a property mechanisim allowing to alter its behavior.

The andReturn method defines the return value of this method for the specified method parameters. Oren Gross, Mercury Interactive. And one more eaaymock thing — unit testing implies isolation of functionality from other parts of the application.

JUnit & EasyMock tutorial with a code examples

I will be easymofk EasyMock in the example below. Just add EasyMock and Dexmaker as dependencies of the apk project used to test your application. As an example, the following code will not compile, as the type of the provided return value does not match the method’s return value: However, there are some obvious constraints: If a document is added on the class under test, we expect a call to mock. The API for Software: Properties can be set in two ways.

On a Mock Object returned by mock the default behavior for all methods is to throw an AssertionError for all unexpected method calls.

JUnit Testing Using EasyMock

So a giving mock or mocks linked to the same IMocksControl can only be recorded from a single thread. But many of these static methods just identify the hidden control of the Mock Object and delegate to it.


EasyMockRunner ; import org. Positive return values are a vote for removal. In the first line, we ask the EasyMock to create a mock object for our StockMarket interface. EasyMock is available in the Maven central repository. Choosing one of the other is a matter of taste. In record phase, you may switch order checking on by calling checkOrder mock, true and switch it off by calling checkOrder mock, false.

Easy Mock Tutorial

Published at DZone with permission of Sourabh Bawage. I have been using EasyMock to unit test some web-based classes without requiring the presence of the app server and I am very impressed.

In the previous code snippet you see interaction of JUnit and EasyMock. EasyMock jar can be used as an OSGi bundle.

EasyMock Tutorial

Here, I don’t want the document received by voteForRemovals to be equals, I want it to be the exact same class instance coming from the cache.

So, you need to mock the stock market service that returns dummy values without hitting the real server. Rule ; import org. BOSS ; assertEquals The failure occurs immediately at the first method call exceeding the limit: Moreover, it encourages us to make more frequent use of MockObjects leading to compositional and interface oriented designs.

All missed expectations are shown, as well as all fulfilled expectations for the unexpected call none in this case. If you use Maven, the final required dependencies will look like this:. Finally, calling checkIsUsedInOneThread mock, true on a mock will make sure the mock is used in only one thread and throw an exception otherwise.

After the container interface is developed and the abstract class is completed, we can proceed with a concrete container realization. Which is what you try to avoid by using EasyMock.


The implementation is straightforward:. Create a new test for IncomeCalculator and place the new test class in this folder. The fieldName qualifier can be used in this scenario to disambiguate the assignments. Tutrials tutorial covers the basic concept of EasyMock. Available for String s.

In case of failure, you can replace the default instantiator with:. Available for all primitive types and for objects.

Alex Fruzenshtein Mathematician, programmer, wrestler, last action hero 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. Expecting an Explicit Number of Calls Up to now, our test has only considered a single method call. A strict Mock Object has order checking enabled after creation. If ClassUnderTest gets a call for document removal, it asks all collaborators for their vote for removal with calls to byte voteForRemoval String title value.

Not only is it well crafted and easy to use. This circumstance imposes some logical restrictions on development. Unexpected method call documentRemoved “Does not exist”: This tutorial is mainly targeted for the Java developers who desire to improve the quality of the software by using unit testing easyymock test-driven development.

However, since it extends a serializable class, this class might have defined a special behavior using for instance writeObject. On top easynock that, since EasyMock 3. This usually happens when you want to test a method that calls some others in the same class. Make sure you reset it if needed.