MATLAB Programming Fundamentals - MathWorks

Create Basic Custom Fixture

This example shows how to create a basic custom fixture that changes the display format

to hexadecimal representation. The example also shows to use the fixture to test a

function that displays a column of numbers as text. After the testing completes, the

framework restores the display format to its pretest state.

Create FormatHexFixture Class Definition

In a file in your working folder, create a new class, FormatHexFixture that inherits

from the matlab.unittest.fixtures.Fixture class. Since we want the fixture to

restore the pretest state of the MATLAB display format, create an OriginalFormat

property to keep track of the original display format.

classdef FormatHexFixture < matlab.unittest.fixtures.Fixture

properties (Access=private)

OriginalFormat

end

Implement Setup and Teardown Methods

Subclasses of the Fixture class must implement the setup method. Use this method to

record the pretest display format, and set the format to 'hex'. Use the teardown

method to restore the original display format. Define the setup and teardown methods

in the methods block of the FormatHexFixture.m file.

methods

function setup(fixture)

fixture.OriginalFormat = get(0, 'Format');

set(0, 'Format', 'hex')

end

function teardown(fixture)

set(0, 'Format', fixture.OriginalFormat)

end

end

end

Apply Custom Fixture

In a file in your working folder, create the following test class, SampleTest.m.

classdef SampleTest < matlab.unittest.TestCase

methods (Test)

33 Unit Testing