Write an awesome description for your new site here. You can edit this line in It will appear in your document head meta (for Google search results ). JUnit + JMock. JMock – Java framework for mock objects, which helps by: automatically creating mock objects The JMock homepage at The JMock Cookbook at http://jmock. org/ The JMock cheetsheet at

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The argument is null. Tests written with JUnit 3 can extend MockObjectTestCase, in which case they don’t need to explictly cookbbook or refer to the context. The invocation is expected at least min times and at most max times.

jMock – Cookbook

A test can contain multiple expectation blocks. An expectations block can contain any number of expectations.

Return a new iterator over elements v 1 to v n on each invocation. Each expectation has the following structure:.

jMock 2 Cheat Sheet

An invocation can be constrained to occur during a state of one more more state machines. An expectations block can contain any number of expectations. Invocations that are expected in a sequence must occur in the order in which they appear in the test code.


The intial state is optional.

The jMock Cookbook

If not specified, the state machine starts in an unnamed initial state. In outline, a jMock 2 test looks like the following:.

The argument matches one of the Matchers m 1 to m n. Software jMock 2 Java 1. You can give an expectation as many inSequencewhenwill and then clauses as you wish.

The following clauses constrain invocations to occur within specific states and define how an invocation will change the current state of a state machine. It is often more convenient to store mock objects in instance variables and define constants for the values used in the test, as the examples above do.

Allowing or ignoring should be chosen to make the test code clearly express intent.

The same as allowing. This can be used to clarify exactly when expected calls will happen in response to calls to the object under test. States are used to constrain invocations to occur only when a condition is true. For example, the test above can be rewritten as follows to more clearly express when the cache loads an object will be loaded and when it returns a cached copy:. Except for the invocation count and the mock object, all clauses are optional.


A test can create multiple state machines and each state machine can have multiple states. A test can create more than one sequence and an expectation can be part of more than once sequence at a time.

A Mockery represents the context of the object under test: The type argument is required to force Java to type-check the argument at compile time. Expectations do not have to be defined in the body of the test method. The argument matches all of the Matchers m 1 to m n. A test can contain multiple expectation blocks. JUnit 3 JUnit 4 Other. The examples above assume that the mock object is stored in an instance variable. Expectations can be interspersed with calls to the code under test.

Conditions are represented as states of state machines.