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 following clauses constrain invocations to occur within specific states and define how an invocation will change the current state of a state machine. Conditions are represented as states of state machines. Tests written with JUnit 3 can cooobook MockObjectTestCase, in which case they don’t need to explictly create or refer to the context.
Software jMock 2 Java 1. JUnit 3 JUnit 4 Other. Expectations in later blocks are appended to those in earlier blocks. Return a new iterator over elements v 1 to v n on each invocation.
In outline, a jMock 2 test looks like the following:.
jMock 2 Cheat Sheet
In outline, a jMock 2 test looks like the following: The intial state is optional. Because the expectations are defined within an anonymous inner class, any mock objects or other values that are stored in local variables and referenced from within the cookboook block must be final.
A test can create multiple state machines and each state machine can have multiple states. The argument is not null. Specifying Expectations Expectations are defined within a “Double-Brace Block” that defines the expectations in the context of the the test’s Mockery identified as context in the examples below. An invocation can be constrained to occur during a state of one more more state machines. Except for the invocation count 1 and cookboook mock object, all clauses are optional.
Changes the state of state-machine to the named state when the invocation occurs. If a mock object is stored in a local variable, the variable must be declared as final so that it can be referred to from within expectation blocks see below. JUnit 3 JUnit 4 Other. The argument is null. For example, the test above can be rewritten as follows to more jnock express when the cache loads an object will be loaded and when it returns a cached copy:. This is used to make tests more explicit and so easier to understand.
You can give an expectation as many inSequencewhenwill and then clauses as you wish. Except for the invocation count and the mock object, all clauses are optional.
Software jMock 2 Java 1. Expectations are defined within a “Double-Brace Block” that defines the expectations in the context of the the test’s Mockery identified as context in the examples below.
The argument matches one of the Matchers m 1 to m n.
The most commonly used matchers are cookbool in the Expectations 1 class:. The examples above assume that the mock object is stored in an instance variable. You can give an expectation as many inSequence 2when 3will and then 4 clauses as you wish.
A test can contain multiple expectation blocks. The argument is any value. Expectations in later blocks are appended to those in earlier blocks.
jMock – Cookbook
If not specified, the state machine starts in an unnamed initial state. The argument matches all of the Matchers m 1 to m n. An expectations block can contain any number of expectations. Constants have the added benefit of making the test easier to understand than they would be if unnamed, literal values were used.
States are used to constrain invocations to occur only when a condition is true. By convention the Mockery is stored in an instance variable named context. To expect a sequence of invocations, write the expectations in order and add the inSequence sequence clause to each one.
The invocation is not expected at all. Allowing or ignoring should be chosen to make the test code clearly express intent. A test can create more than one sequence and an expectation can be part of more than once sequence at a time. Invocations that are expected in a sequence must occur in the order in which they appear in the test code. This can be used to clarify exactly when expected calls will happen in response to calls to the object under test.
The invocation is expected exactly n times. The same as allowing.
Each expectation has the following structure:.