Testing framework: Only test specific parameter combinations

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Opt User
Opt User 2017-9-14
编辑： Opt User 2017-9-14
In an advanced parametrized test class, is it possible to omit certain combinations of parameters from the resulting test suite? For example, lets say I have:
properties (TestParameter)
parameter1 = {'a','b'};
parameter2 = {'x','y'}
end
I want to run a certain test for the parameter combinations ax, ay, and bx (omit by).

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Sean de Wolski
Sean de Wolski 2017-9-14
You can use the TestSuite.selectIf with HasParameter and boolean logic with multiple HasParameters to remove them.
https://www.mathworks.com/help/releases/R2017a/matlab/ref/matlab.unittest.selectors.hasparameter-class.html
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Steven Lord
Steven Lord 2017-9-14
If you have many combinations that you want to accept and only a small number (one or two) that you want to filter, you could use one of the assume* methods on the testCase object. If the assumption fails, "The test framework then marks the test content as filtered and continues testing. Often, assumptions are used to ensure that the test is run only when certain preconditions are met. However, running the test without satisfying the preconditions does not produce a test failure."
testCase.assumeFalse(isequal(parameter1, 'b') && ...
isequal(parameter2, 'y'))
or
assumeFalse(testCase, isequal(parameter1, 'b') && ...
isequal(parameter2, 'y'))
or
% since they're both characters, we can concatenate the parameters
testCase.assumeNotEqual([parameter1, parameter2], 'by')
Sean de Wolski
Sean de Wolski 2017-9-14
Or you could verifyError or verifyWarning when those parameter sets are hit to ensure that your system under test does the right thing when provided with bad inputs.

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