Matlab Unit test for structure input. How to use same test for n numbers.

1. I have a matlab unit test class. Here i am using setup method to form structure i.e. 'testCase.out' this structure have n values here n=4.
2. Test method is used to verify equality of values.

classdef ClassTest < matlab.unittest.TestCase
    
    properties (Access = private)
        out
    end
    
    methods (TestClassSetup)
        function FirstSetup(testCase)
            n=4;
            for i=1:n
                testCase.out(i).name= ['Test_', num2str(i)];
                testCase.out(i).value = i;
            end
        end
    end
    
    
    methods (Test)
        function MyTest(testCase)
            for k=1:length(testCase.out)
                Test = testCase.out(k).name;
                testCase.verifyEqual(testCase.out(k).value,2);
            end
        end
    end
    
end

Now to run this test:

import matlab.unittest.TestSuite
suite = TestSuite.fromClass(?ClassTest);
result = run(suite);

The result is failed as k=1,3 and 4 is not equal values. Only k=2 value is equal.

Question:

How could we create a test such that for value 2 the test will pass and for other test will fail. So i want result table i.e. Test1 = fail, Test2=Pass, Test3=fail and Test4 = fail.

how could we use above same test and get result table for n numbers with pass fail status?

Answer 1

[Bharathi Sunkara]

Hi Sudhakar,

As per my understanding, you can make use of the “TestParameter” property available in MATLAB in order to create the structure of values and use the structure in the verifyEqual, summary of the test is displayed in the table at the end of the test result.

Here is how you can do:

classdef ClassTest < matlab.unittest.TestCase
    
    properties (Access = private)
        out
    end
    properties (TestParameter)
        testValue={1,2,3,4}
    end
    
    methods (Test)
        function MyTest(testCase, testValue)
            testCase.verifyEqual(testValue,2);
        end
    end
    
end

Hope this Helps!

[Sudhakar Shinde]

Thanks Bharathi. I understood the way of using TestParameter property. But i am expecting the structure formation should happen in setup method and then i can use this structure to pass in test method.

parameterized test works good if we form a structure using TestParameter property.

How can we form structure in setup method and then i can use parameterized test to verifyEqual.?

Answer 2

[Steven Lord]

It sounds like you want to create a parameterized test.

[Sudhakar Shinde]

Thanks steven. I already gone through this page but still haven't achieved. It may take more time to understand parameterized test. meanwhilec can you please help me to have above simple example.