MATLAB Programming Fundamentals - MathWorks

'An existing UserName environment variable must be defined.')

fixture.addTeardown(@setenv, 'UserName', originalUserName)

fixture.TeardownDescription = sprintf(...

'Restored the UserName environment variable to "%s".',...

originalUserName);

setenv('UserName', fixture.UserName)

end

end

Implement isCompatible Method

Classes that derive from Fixture must implement the isCompatible method if the

constructor is configurable. Since you can configure the UserName property through the

constructor, UserNameEnvironmentVariableFixture must implement

isCompatible.

The isCompatible method is called with two instances of the same class. In this case, it

is called with two instances of UserNameEnvironmentVariableFixture. The testing

framework considers the two instances compatible if their UserName properties are

equal.

In a new methods block within UserNameEnvironmentVariableFixture.m, define an

isCompatible method which returns logical 1 (true) or logical 0 (false).

methods (Access=protected)

function bool = isCompatible(fixture, other)

bool = strcmp(fixture.UserName, other.UserName);

end

end

Fixture Class Definition Summary

Below are the complete contents of UserNameEnvironmentVariableFixture.m.

classdef UserNameEnvironmentVariableFixture < ...

matlab.unittest.fixtures.Fixture

properties (SetAccess=private)

UserName

end

methods

function fixture = UserNameEnvironmentVariableFixture(name)

validateattributes(name, {'char'}, {'row'}, '','UserName')

fixture.UserName = name;

fixture.SetupDescription = sprintf( ...

'Set the UserName environment variable to "%s".',...

fixture.UserName);

end

33 Unit Testing