MATLAB Programming Fundamentals - MathWorks

Use External Parameters in Parameterized Test

You can inject variable inputs into your existing class-based test. To provide test data that

is defined outside the test file and that should be used iteratively by the test (via

parameterized testing), create a Parameter and use the 'ExternalParameters'

option to TestSuite creation methods such as TestSuite.fromClass.

Create the following function to test. The function accepts an array, vectorizes the array,

removes 0, Nan, and Inf, and then sorts the array.

function Y = cleanData(X)

Y = X(:); % Vectorize array

Y = rmmissing(Y); % Remove NaN

% Remove 0 and Inf

idx = (Y==0 | Y==Inf);

Y = Y(~idx);

% If array is empty, set to eps

if isempty(Y)

Y = eps;

end

Y = sort(Y); % Sort vector

end

Create the following parameterized test for the cleanData function. The test repeats

each of the four test methods for the two data sets that are defined in the properties

block.

classdef TestClean < matlab.unittest.TestCase

properties (TestParameter)

Data = struct('clean',[5 3 9;1 42 5;32 5 2],...

'needsCleaning',[1 13;NaN 0;Inf 42]);

end

methods (Test)

function classCheck(testCase,Data)

act = cleanData(Data);

testCase.assertClass(act,'double')

end

function sortCheck(testCase,Data)

act = cleanData(Data);

testCase.verifyTrue(issorted(act))

Use External Parameters in Parameterized Test