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matlab.mock.actions.DoNothing Class

Namespace: matlab.mock.actions

Take no action

Since R2020a


Use the matlab.mock.actions.DoNothing class to specify that the framework takes no action when a mock object method is invoked or when a mock object property is set.

DoNothing cannot be used to set up behavior when accessing a mock object property. To specify that a mock property must not be accessed, use the matlab.mock.actions.ThrowException class.


action = matlab.mock.actions.DoNothing creates a DoNothing object.


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Create a mock for a bank account class.

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

Set up behavior. Take no action if the IsOpen property is set to a value that is not of type logical.

import matlab.mock.actions.DoNothing
import matlab.unittest.constraints.IsInstanceOf

Use the mock to set IsOpen to a nonlogical value. No action is taken and IsOpen is left unset.

mock.IsOpen = 'Y'
mock = 
  Mock with properties:

    IsOpen: []

Use the mock to set IsOpen to a logical value.

mock.IsOpen = true
mock = 
  Mock with properties:

    IsOpen: 1

Version History

Introduced in R2020a