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then

Class: matlab.mock.actions.Invoke
Package: matlab.mock.actions

Action for mock object interaction or action subsequent to invoking function handle

Syntax

then(action1)
then(action1,action2)

Description

then(action1) specifies an action for mock object interactions.

then(action1,action2) specifies an action and a subsequent action for mock object interactions.

Input Arguments

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Defined action, specified as an instance of matlab.mock.actions.Invoke.

Second defined action, specified as an instance of matlab.mock.actions.Invoke, matlab.mock.actions.AssignOutputs, matlab.mock.actions.DoNothing, or matlab.mock.actions.ThrowException.

Examples

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Create a mock for a class that represents a 6-sided die, including a mocked roll method.

testCase = matlab.mock.TestCase.forInteractiveUse;
[mock,behavior] = testCase.createMock('AddedMethods',"roll");

Set up behavior for the roll method. Return 0 the first time it runs. On subsequent runs, invoke the randi function to return a random integer between 1 and 6.

import matlab.mock.actions.AssignOutputs
import matlab.mock.actions.Invoke
when(withExactInputs(behavior.roll), ...
    AssignOutputs(0).then(Invoke(@(~)randi(6))))

Call the mocked roll method three times.

val = mock.roll
val = 0
val = mock.roll
val = 5
val = mock.roll
val = 6

Tips

  • Each call to then accepts up to two actions. To specify more subsequent actions, use multiple calls to then. For example, to specify three actions, use action1.then(action2).then(action3).

Introduced in R2018b