MATLAB Programming Fundamentals - MathWorks

Create Simple Test Suites

This example shows how to combine tests into test suites, using the SolverTest test

case. Use the static from* methods in the matlab.unittest.TestSuite class to

create suites for combinations of your tests, whether they are organized in packages and

classes or files and folders, or both.

Create Quadratic Solver Function

Create the following function that solves roots of the quadratic equation in a file,

quadraticSolver.m, in your working folder.

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 Test for Quadratic Solver Function

Create the following test class in a file, SolverTest.m, in your working folder.

classdef SolverTest < matlab.unittest.TestCase

% SolverTest tests solutions to the quadratic equation

% a*x^2 + b*x + c = 0

methods (Test)

function testRealSolution(testCase)

actSolution = quadraticSolver(1,-3,2);

expSolution = [2,1];

testCase.verifyEqual(actSolution,expSolution);

end

function testImaginarySolution(testCase)

actSolution = quadraticSolver(1,2,10);

expSolution = [-1+3i, -1-3i];

testCase.verifyEqual(actSolution,expSolution);

33 Unit Testing