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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The argument is null. Do all actions a 1 to a n on every invocation. An overloaded version of the equal constraint specifies floating point values as equal to another value with some margin of error to account for rounding error. Which probably says that oneOf means that I expect that could be more invocations of method add and in this case there are two invocations one of them is with parameters 1 and 1, and second with parameters 2 and 2.

Most of the time expectations specify literal parameter values that are compared for equality against the actual parameters of invoked methods. As a rule of thumb, use equal for value objects and same for behavioural objects.

jMock – jMock 2 Cheat Sheet

A Mockery represents the context of the object under test: The argument is not null. The following code specifies that the method “doSomething” must be called with a string that contains the text “hello” and the text “world”. The equalTo constraint uses the equals method of the expected value to compare the expected and actual values for equality.


Composite matchers are themselves matchers and can therefore be further composed. The Subscriber interface looks like this: Cheat sheet says that: JUnit 3 JUnit 4 Other. States are used to constrain invocations to occur only when a condition is true.

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junit – JMock expectations oneOf VS one difference – Stack Overflow

But the exactly one aka exactly 1. The argument matches one of the Matchers m 1 to m n.

The question is if there is any difference between this keywords or it means equaly the same thing. The type argument is required to force Java to type-check the argument at compile time. Judicious use of the any constraint ensure that your tests are flexible and do not require constant maintenance when tested code changes. The following clauses constrain invocations to occur within specific states and define how an invocation will change the current state of a state machine.

The following code specifies that the method “doSomething” will be called with one argument of value 1 plus or minus 0. Take a look at source code of AbstractExpectations.

To expect a sequence of invocations, write the expectations in order and add the inSequence sequence clause to each one. Tests written with JUnit 3 can extend MockObjectTestCase, in which case they don’t need to explictly create or refer to the context. The invocation is expected at least min times and at most max times.


The jMock Cookbook

An expectations block can contain any number of expectations. The stringContaining matcher is especially useful for testing string contents but isolating tests from the exact details of punctuation and formatting.

The invocation is not syeet at all.

Except for the invocation count and the mock object, all clauses are optional. Null values are checked beforehand, so it is safe to specify equal null or apply the matcher to a null actual value. ERRORwith stringContaining “sqrt” ; Loose parameter constraints are defined by specifying matchers for each parameter.

If not specified, the state machine starts in an unnamed initial state. Stack Overflow works best with JavaScript enabled. The most commonly used matcher is equalwhich specifies that the received argument must chext equal to a given value.

An invocation can be constrained to occur during a state of one more more state machines. The not matcher specifies that the actual argument must not match a given matcher.

Next we define expectations 1 on the mock Subscriber that specify the methods that we expect to be called upon it during the test run.