# Analyze Test Case Results

This example shows how to analyze the information returned by a test runner created from the `SolverTest` test case.

Create the following function that solves roots of the quadratic equation in a file, `quadraticSolver.m`, in your working folder.

`type quadraticSolver.m`
```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.

`type SolverTest.m`
```classdef SolverTest < matlab.unittest.TestCase methods(Test) function realSolution(testCase) actSolution = quadraticSolver(1,-3,2); expSolution = [2,1]; testCase.verifyEqual(actSolution,expSolution) end function imaginarySolution(testCase) actSolution = quadraticSolver(1,2,10); expSolution = [-1+3i, -1-3i]; testCase.verifyEqual(actSolution,expSolution) end function nonnumericInput(testCase) testCase.verifyError(@()quadraticSolver(1,'-3',2), ... 'quadraticSolver:InputMustBeNumeric') end end end ```

### Run `SolverTest` Test Case

Create a test suite, `quadTests`.

```quadTests = matlab.unittest.TestSuite.fromClass(?SolverTest); result = run(quadTests);```
```Running SolverTest ... Done SolverTest __________ ```

All tests passed.

### Explore Output Argument,` result`

The output argument, `result`, is a `matlab.unittest.TestResult` object. It contains information of the two tests in `SolverTest`.

`whos result`
``` Name Size Bytes Class Attributes result 1x3 7613 matlab.unittest.TestResult ```

### Display Information for One Test

To see the information for one value, type:

`result(1)`
```ans = TestResult with properties: Name: 'SolverTest/realSolution' Passed: 1 Failed: 0 Incomplete: 0 Duration: 0.0065 Details: [1×1 struct] Totals: 1 Passed, 0 Failed, 0 Incomplete. 0.0065241 seconds testing time. ```

### Create Table of Test Results

To access functionality available to tables, create one from the `TestResult` object.

`rt = table(result)`
```rt=3×6 table Name Passed Failed Incomplete Duration Details ________________________________ ______ ______ __________ _________ ____________ {'SolverTest/realSolution' } true false false 0.0065241 {1×1 struct} {'SolverTest/imaginarySolution'} true false false 0.0036673 {1×1 struct} {'SolverTest/nonnumericInput' } true false false 0.0074686 {1×1 struct} ```

Sort the test results by duration.

`sortrows(rt,'Duration')`
```ans=3×6 table Name Passed Failed Incomplete Duration Details ________________________________ ______ ______ __________ _________ ____________ {'SolverTest/imaginarySolution'} true false false 0.0036673 {1×1 struct} {'SolverTest/realSolution' } true false false 0.0065241 {1×1 struct} {'SolverTest/nonnumericInput' } true false false 0.0074686 {1×1 struct} ```

Export test results to a CSV file.

`writetable(rt,``'myTestResults.csv'``,``'QuoteStrings'``,true)`