MATLAB Programming Fundamentals - MathWorks

Write Test for App

This example shows how to write tests for an App Designer app. To interact with the app

programmatically and qualify the results, use the app testing framework and the unit

testing framework.

To explore the properties of this app prior to testing, create an instance of the app at the

command prompt.

app = PatientsDisplay;

This step is not necessary for the tests, but it is helpful to explore the properties used by

the app tests. For example, use app.BloodPressureSwitch to access the Blood

Pressure switch within the app object.

Create a test class that inherits from matlab.uitest.TestCase. To test the tab

switching functionality, create a test method test_tab. The test method chooses the

Data tab and then verifies that the selected tab has the correct title. The

TestMethodSetup method creates an app for each test and deletes it after the test is

complete.

classdef TestPatientsDisplay < matlab.uitest.TestCase

properties

App

end

methods (TestMethodSetup)

function launchApp(testCase)

testCase.App = PatientsDisplay;

testCase.addTeardown(@delete,testCase.App);

end

end

methods (Test)

function test_tab(testCase)

% Choose Data Tab

dataTab = testCase.App.Tab2;

testCase.choose(dataTab)

% Verify Data Tab is selected

testCase.verifyEqual(testCase.App.TabGroup.SelectedTab.Title,'Data')

end

end

end

Create a test_plottingOptions method that tests various plotting options. The test

method presses the Histogram radio button and verifies that the x-label changed. Then,

it changes the Bin Width slider and verifies the number of bins.

classdef TestPatientsDisplay < matlab.uitest.TestCase

properties

Write Test for App