runInParallel

Class: matlab.unittest.TestRunner
Package: matlab.unittest

Run all tests in TestSuite array in parallel

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Syntax

result = runInParallel(runner,suite)

Description

example

result = runInParallel(runner,suite) runs all tests in the TestSuite array in parallel and returns the results in a TestResult object. The runInParallel method divides suite into separate groups and uses runner to run each group on the current parallel pool.

Note

The runInParallel method requires the Parallel Computing Toolbox™. The testing framework might vary the order and number of groups or which tests it includes in each group.

When you select a test suite to run in parallel, consider possible resource contention. For example, if your test fixtures access global resources, such as a shared file on the same network, the parallel sessions could conflict with each other. In such cases, consider using a prebuilt shared test fixture.

Input Arguments

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Test runner for parallel test groups, specified as a matlab.unittest.TestRunner instance.

Consider your test runner configuration before running tests in parallel. Since the runInParallel method runs separate groups of tests on different workers, some plugins, such as StopOnFailuresPlugin or CodeCoveragePlugin, are not well suited for parallelization. The framework does not support running parallelized tests using a test runner with a custom plugin.

Set of tests to run in parallel, specified as a matlab.unittest.Test array.

Examples

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Create the following parameterized test in a file in your current working folder.

classdef TestRand < matlab.unittest.TestCase    
    properties (TestParameter)
        dim1 = createDimensionSizes;
        dim2 = createDimensionSizes;
        dim3 = createDimensionSizes;
        type = {'single','double'};
    end
    
    methods (Test)
        function testRepeatable(testCase,dim1,dim2,dim3)
            state = rng;
            firstRun = rand(dim1,dim2,dim3);
            rng(state)
            secondRun = rand(dim1,dim2,dim3);
            testCase.verifyEqual(firstRun,secondRun);
        end
        function testClass(testCase,dim1,dim2,type)
            testCase.verifyClass(rand(dim1,dim2,type),type)
        end
    end
end
 
function sizes = createDimensionSizes
% Create logarithmicly spaced sizes up to 100
sizes = num2cell(round(logspace(0,2,10)));
end

At the command prompt, create a suite from TestRand.m and a test runner that displays text in the Command Window.

suite = matlab.unittest.TestSuite.fromClass(?TestRand);
runner = matlab.unittest.TestRunner.withTextOutput();

The suite contains 1200 test elements.

Run the test suite in parallel.

result = runInParallel(runner,suite)
Split tests into 12 groups and running them on 4 workers.
----------------
Finished Group 2
----------------
Running TestRand
..........
..........
..........
..........
..........
..........
..........
..........
..........
..........
.........
Done TestRand
__________


----------------
Finished Group 4
----------------
Running TestRand
..........
..........
..........
..........
..........
..........
..........
..........
..........
..........
.....
Done TestRand
__________


----------------
Finished Group 3
----------------
Running TestRand
..........
..........
..........
..........
..........
..........
..........
..........
..........
..........
.......
Done TestRand
__________


----------------
Finished Group 1
----------------
Running TestRand
..........
..........
..........
..........
..........
..........
..........
..........
..........
..........
..........
..
Done TestRand
__________


----------------
Finished Group 7
----------------
Running TestRand
..........
..........
..........
..........
..........
..........
..........
..........
..........
.........
Done TestRand
__________


----------------
Finished Group 5
----------------
Running TestRand
..........
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..........
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..........
..........
..........
..........
..........
...
Done TestRand
__________


----------------
Finished Group 6
----------------
Running TestRand
..........
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..........
..........
.
Done TestRand
__________


----------------
Finished Group 8
----------------
Running TestRand
..........
..........
..........
..........
..........
..........
..........
..........
..........
.......
Done TestRand
__________


-----------------
Finished Group 11
-----------------
Running TestRand
..........
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..........
..........
..........
..........
..........
.
Done TestRand
__________


-----------------
Finished Group 12
-----------------
Running TestRand
..........
..........
..........
..........
..........
..........
..........
..........
........
Done TestRand
__________


-----------------
Finished Group 10
-----------------
Running TestRand
..........
..........
..........
..........
..........
..........
..........
..........
..........
...
Done TestRand
__________


----------------
Finished Group 9
----------------
Running TestRand
..........
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..........
..........
..........
..........
..........
..........
..........
.....
Done TestRand
__________



result = 

  1200x1 TestResult array with properties:

    Name
    Passed
    Failed
    Incomplete
    Duration
    Details

Totals:
   1200 Passed, 0 Failed, 0 Incomplete.
   11.4023 seconds testing time.

See Also

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Topics

Introduced in R2015a

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