JMock expectations oneOf VS one difference Is any difference in using one() or oneOf() in JMock? In cheat sheet mentioned before there is also example. Appendix A. jMock2 Cheat Sheet Introduction We use jMock2 as our mock object We’re using JUnit (we assume you’re familiar with it); jMock also. jMock 1 Documentation Stubs, Expectations and the Dispatch of Mocked Methods in jMock 1 3; Mocking Classes with jMock 1 and CGLIB 4 Cheat Sheet .

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If the expected calls were not made, the test will fail. The same as allowing.

A test can contain multiple expectation blocks. Finally we create a message object to publish.

JMock to Scalamock Cheat Sheet

You can give an expectation as many inSequencewhenwill and then clauses as you wish. The following code specifies that the method “doSomething” must be called with a string that either contains the text “hello” or the text “howdy”.

Invocations that are expected in a sequence must occur in the order in which they appear in the test code. The following code specifies that method “doSomething” must be called with two Strings, the first must be null and the second must not be null.

Conditions are represented as states of state machines.

Changes the state of state-machine to the named state when the invocation occurs. The argument is null. This is a JUnit 3 test case but apart from the test case class xheat code will be the same when using any test framework for which jMock 2 does not have an integration layer.

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After the code under test has finished our test must verify that the mock Subscriber was called as expected. States are used to constrain invocations to occur only when a condition is true. An overloaded version shset the equal constraint specifies floating point values as equal to another value with some margin of error to account for rounding error. Matchers can be composed to create a tighter or looser specification.

Software jMock 2 Java 1. The JUnit 3 and JUnit 4 integration layers automatically assert that all expectations have been satisfied.

Getting Started

As a rule of thumb, use equal for value objects and same for behavioural objects. Cheat sheet says that: The invocation is expected at least min times and at most max times. Sign up using Email and Password.

This is useful for ignoring arguments that are not relevant to the scenario being tested. The type argument is required to force Java to type-check the argument at compile time.

The allOf matcher specifies that the actual argument must meet all of the matchers given as arguments. In tests I can see using one and in other there is oneOf.

A Mockery represents the context of the object under test: To define looser constraints, specify all arguments as matchers within with clauses:. The examples above assume that the mock object is stored in an instance variable. If not specified, the state machine starts in an unnamed initial state.


We create a Publisher to test. We want to test the Publisher, which involves testing its interactions with its Subscribers. Except for the invocation count and the mock object, all clauses are optional. Tests written with JUnit 3 can extend MockObjectTestCase, in which case they don’t need to explictly create or refer to the context.

jMock – jMock 2 Cheat Sheet

Most of the time expectations specify literal parameter values that are compared for equality against the actual parameters of invoked methods. The stringContaining matcher specifies that the expected argument must be a string that contains the given substring. The invocation is expected exactly n times. The code below, for jmoc, specifies that the method “doSomething” must be called with one argument of value 1. If a mock object is stored in a local variable, the variable must be declared jmok final so that it can be referred to from within expectation blocks see below.