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

8 views (last 30 days)
Sudhakar Shinde on 4 Nov 2020
Commented: Sudhakar Shinde on 5 Nov 2020
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?

Bharathi Sunkara on 5 Nov 2020
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!
##### 1 CommentShowHide None
Sudhakar Shinde on 5 Nov 2020
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.?

### More Answers (1)

Steven Lord on 4 Nov 2020
It sounds like you want to create a parameterized test.
##### 1 CommentShowHide None
Sudhakar Shinde on 5 Nov 2020
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.