Expect a Sequence of Invocations

Sequences are used to define expectations that must occur in the order in which they appear in the test code. A test can create more than one sequence and an expectation can be part of more than once sequence at a time.

To define a new sequence:

final Sequence sequence-name = context.sequence("sequence-name");

final Sequence sequence-name = sequence("sequence-name");

final Sequence sequence-name = context.sequence("sequence-name");

JMock can auto-instantiate Sequences¹ to reduce boilerplate code.

To expect a sequence of invocations, write the expectations in order and add the inSequence(sequence) clause to each one. For example:

oneOf (turtle).forward(10); inSequence(drawing);
oneOf (turtle).turn(45); inSequence(drawing);
oneOf (turtle).forward(10); inSequence(drawing);

Expectations in a sequence can have any invocation count². If an expectation in a sequence is allowed, rather than expected, it can be skipped in the sequence.