MATLAB Programming Fundamentals - MathWorks

Write Simple Test Case Using Classes

This example shows how to write a unit test for a MATLAB® function,

quadraticSolver.m.

Create quadraticSolver.m Function

The following MATLAB function solves quadratic equations. Create this function in a

folder on your MATLAB path.

function roots = quadraticSolver(a, b, c)

% quadraticSolver returns solutions to the

% quadratic equation a*x^2 + b*x + c = 0.

if ~isa(a,'numeric') || ~isa(b,'numeric') || ~isa(c,'numeric')

error('quadraticSolver:InputMustBeNumeric', ...

'Coefficients must be numeric.');

end

roots(1) = (-b + sqrt(b^2 - 4*a*c)) / (2*a);

roots(2) = (-b - sqrt(b^2 - 4*a*c)) / (2*a);

end

Create SolverTest Class Definition

To use the matlab.unittest framework, write MATLAB functions (tests) in the form of

a test case, a class derived from matlab.unittest.TestCase.

Create a subclass, SolverTest.

% Copyright 2015 The MathWorks, Inc.

classdef SolverTest < matlab.unittest.TestCase

methods (Test)

end

Write Simple Test Case Using Classes