Qualification for checking objects with respect to an interface

I want to write some tests to check if my objects have implemented an interface correctly. The outline of my test is as follows:

classdef ClassATest < matlab.unittest.TestCase    
    
    methods (Test)
        
        function testAddOne(testCase)
            % Example test function that uses the verifyEqual qualification.
            testObj = ClassA();
            testObj.Value = 1;
            testObj.addOne();
            testCase.verifyEqual(testObj.Value, 2);
        end
        
        function testImplementsInterfaceB(testCase)
            % Checks that ClassA objects implement the InterfaceB interface.
            % InterfaceB consists of an "addTwo" method.
            % What qualification do I use here?
        end    
    
    end    
    
end

I've looked at the list of qualifications in Types of Qualifications, but am not able to find an appropriate method. It would be ideal if there is a method similar to Ruby's "assert_respond_to" method from the Minitest framework, as it makes the intent of the test clear and can itself serve as a form of "executable documentation".

Answer 1

[Rajani Mishra]

You can use function “ismethod” to check whether provided function is a method of object provided as an input argument and then use verifyTrue() on the output of this function.

To know more about “ismethod” function refer to this link : https://www.mathworks.com/help/matlab/ref/ismethod.html