Main Content

selectIf

Class: matlab.unittest.TestSuite
Namespace: matlab.unittest

Select test suite elements that satisfy conditions

expand all in page

Syntax

filteredSuite = selectIf(suite,selector)
filteredSuite = selectIf(suite,Name,Value)

Description

filteredSuite = selectIf(suite,selector) selects the elements of the specified test suite that satisfy the conditions set by the specified selector. The method returns the selected elements as a filtered TestSuite array.

example

filteredSuite = selectIf(suite,Name,Value) filters the test suite using options specified by one or more name-value arguments. For example, filteredSuite = selectIf(suite,"Name","featureA_*") selects the elements of suite whose name starts with "featureA_".

example

Input Arguments

expand all

Test suite, specified as a matlab.unittest.TestSuite array.

Selector, specified as an instance of a class in the matlab.unittest.selectors namespace. If you have MATLAB® Test™ installed, you also can specify selector as a matlabtest.selectors.DependsOn or matlabtest.selectors.HasBaseline object.

Example: matlab.unittest.selectors.HasTag

Name-Value Arguments

Specify optional pairs of arguments as Name1=Value1,...,NameN=ValueN, where Name is the argument name and Value is the corresponding value. Name-value arguments must appear after other arguments, but the order of the pairs does not matter.

Example: filteredSuite = selectIf(suite,Name="featureA_*")

Before R2021a, use commas to separate each name and value, and enclose Name in quotes.

Example: filteredSuite = selectIf(suite,"Name","featureA_*")

Name of the base folder that contains the test file, specified as a string array, character vector, or cell array of character vectors. This argument filters the test suite. For the testing framework to include a test in the filtered suite, the Test element must be contained in one of the base folders specified by BaseFolder. If none of the Test elements match a base folder, an empty test suite is returned. Use the wildcard character (*) to match any number of characters. Use the question mark character (?) to match a single character.

For test files defined in namespaces, the base folder is the parent of the top-level namespace folder.

Names of the files and folders that contain source code, specified as a string vector, character vector, or cell vector of character vectors. This argument filters the test suite. For the testing framework to include a test in the filtered suite, the file that defines the test must depend on the specified source code. If none of the test files depend on the source code, an empty test suite is returned.

The specified value must represent at least one existing file. If you specify a folder, the framework extracts the paths to the files within the folder.

You must have a MATLAB Test license to use DependsOn. For more information about selecting tests by source code dependency, see matlabtest.selectors.DependsOn (MATLAB Test).

Example: DependsOn=["myFile.m" "myFolder"]

Example: DependsOn=["folderA" "C:\work\folderB"]

Name of the test, specified as a string array, character vector, or cell array of character vectors. This argument filters the test suite. For the testing framework to include a test in the filtered suite, the Name property of the Test element must match one of the names specified by Name. If none of the Test elements have a matching name, an empty test suite is returned. Use the wildcard character (*) to match any number of characters. Use the question mark character (?) to match a single character.

For a given test file, the name of a test uniquely identifies the smallest runnable portion of the test content. The test name includes the namespace name, filename (excluding the extension), procedure name, and information about parameterization.

Name of a test class property that defines a parameter used by the test, specified as a string array, character vector, or cell array of character vectors. This argument filters the test suite. For the testing framework to include a test in the filtered suite, the Parameterization property of the Test element must contain at least one of the property names specified by ParameterProperty. If none of the Test elements have a matching property name, an empty test suite is returned. Use the wildcard character (*) to match any number of characters. Use the question mark character (?) to match a single character.

Name of a parameter used by the test, specified as a string array, character vector, or cell array of character vectors. MATLAB generates parameter names based on the test class property that defines the parameters. For example:

  • If the property value is a cell array, MATLAB generates parameter names from the elements of the cell array by taking into account their values, types, and dimensions.

  • If the property value is a structure, MATLAB generates parameter names from the structure fields.

The ParameterName argument filters the test suite. For the testing framework to include a test in the filtered suite, the Parameterization property of the Test element must contain at least one of the parameter names specified by ParameterName. If none of the Test elements have a matching parameter name, an empty test suite is returned. Use the wildcard character (*) to match any number of characters. Use the question mark character (?) to match a single character.

Name of the test procedure, specified as a string array, character vector, or cell array of character vectors. This argument filters the test suite. For the testing framework to include a test in the filtered suite, the ProcedureName property of the Test element must match one of the procedure names specified by ProcedureName. If none of the Test elements have a matching procedure name, an empty test suite is returned. Use the wildcard character (*) to match any number of characters. Use the question mark character (?) to match a single character.

In a class-based test, the name of a test procedure is the name of a Test method that contains the test. In a function-based test, it is the name of a local function that contains the test. In a script-based test, it is a name generated from the test section title. Unlike the name of a test suite element, the name of a test procedure does not include any namespace name, filename, or information about parameterization.

Name of the class that the test class derives from, specified as a string array, character vector, or cell array of character vectors. This argument filters the test suite. For the testing framework to include a test in the filtered suite, the TestClass property of the Test element must point to a test class that derives from one of the classes specified by Superclass. If none of the Test elements match a class, an empty test suite is returned.

Name of a tag used by the test, specified as a string array, character vector, or cell array of character vectors. This argument filters the test suite. For the testing framework to include a test in the filtered suite, the Tags property of the Test element must contain at least one of the tag names specified by Tag. If none of the Test elements have a matching tag name, an empty test suite is returned. Use the wildcard character (*) to match any number of characters. Use the question mark character (?) to match a single character.

Attributes

Sealedtrue

To learn about attributes of methods, see Method Attributes.

Examples

expand all

Filter a test suite by using the selectIf method.

In a file named FeatureTest.m in your current folder, create the FeatureTest class, which contains tests that use a shared test fixture. To simplify the test code, the test class uses unconditional test failures as placeholders for unimplemented tests.

classdef (SharedTestFixtures={ ...
        matlab.unittest.fixtures.SuppressedWarningsFixture( ...
        "MATLAB:rmpath:DirNotFound")}) ...
        FeatureTest < matlab.unittest.TestCase
    methods (Test)
        function testA(testCase)
            testCase.verifyFail("Implement the test.")
        end
        function testB(testCase)
            testCase.verifyFail("Implement the test.")
        end
        function testC(testCase)
            testCase.verifyFail("Implement the test.")
        end
    end
end

Import the classes used in this example.

import matlab.unittest.selectors.HasName
import matlab.unittest.constraints.ContainsSubstring
import matlab.unittest.constraints.EndsWithSubstring
import matlab.unittest.selectors.HasSharedTestFixture
import matlab.unittest.fixtures.SuppressedWarningsFixture

Create a test suite from the FeatureTest class and display the test names. The suite contains three Test elements.

suite = testsuite("FeatureTest");
disp({suite.Name}')
    {'FeatureTest/testA'}
    {'FeatureTest/testB'}
    {'FeatureTest/testC'}

Create a filtered test suite by selecting tests whose name contains the case-insensitive text "TA".

suite1 = selectIf(suite,HasName(ContainsSubstring("TA","IgnoringCase",true)));
disp({suite1.Name}')
    {'FeatureTest/testA'}

Create a filtered test suite by selecting tests whose name contains "A" or "B".

suite2 = selectIf(suite,"Name",["*A*" "*B*"]);
disp({suite2.Name}')
    {'FeatureTest/testA'}
    {'FeatureTest/testB'}

Create a filtered suite of tests that use a specified shared test fixture and do not have names ending with "C". All of the tests use the specified fixture, but "testC" is excluded from the suite because its name does not satisfy the naming constraint.

suite3 = suite.selectIf(~HasName(EndsWithSubstring("C")) &  ...
    HasSharedTestFixture(SuppressedWarningsFixture( ...
    "MATLAB:rmpath:DirNotFound")));
disp({suite3.Name}')
    {'FeatureTest/testA'}
    {'FeatureTest/testB'}

Create filtered test suites by selecting tests based on parameterization.

In a file named ZerosTest.m in your current folder, create the ZerosTest class, which tests the zeros function. The class has two parameterized Test methods: testClass and testSize.

classdef ZerosTest < matlab.unittest.TestCase
    properties (TestParameter)
        type = {'single','double','uint16'};
        size = struct("s2d",[3 3],"s3d",[2 5 4]);
    end
    
    methods (Test)
        function testClass(testCase,size,type)
            testCase.verifyClass(zeros(size,type),type)
        end
        
        function testSize(testCase,size)
            testCase.verifySize(zeros(size),size)
        end
        
        function testDefaultClass(testCase)
            testCase.verifyClass(zeros,"double")
        end

        function testDefaultSize(testCase)
            testCase.verifySize(zeros,[1 1])
        end
        
        function testDefaultValue(testCase)
            testCase.verifyEqual(zeros,0)
        end
    end
end

Import the HasParameter class.

import matlab.unittest.selectors.HasParameter

Create a test suite from the ZerosTest class and display the test names. The suite contains 11 Test elements.

suite = testsuite("ZerosTest");
disp({suite.Name}')
    {'ZerosTest/testClass(size=s2d,type=single)'}
    {'ZerosTest/testClass(size=s2d,type=double)'}
    {'ZerosTest/testClass(size=s2d,type=uint16)'}
    {'ZerosTest/testClass(size=s3d,type=single)'}
    {'ZerosTest/testClass(size=s3d,type=double)'}
    {'ZerosTest/testClass(size=s3d,type=uint16)'}
    {'ZerosTest/testSize(size=s2d)'             }
    {'ZerosTest/testSize(size=s3d)'             }
    {'ZerosTest/testDefaultClass'               }
    {'ZerosTest/testDefaultSize'                }
    {'ZerosTest/testDefaultValue'               }

Create a filtered test suite by selecting all the parameterized tests.

suite1 = suite.selectIf(HasParameter);
disp({suite1.Name}')
    {'ZerosTest/testClass(size=s2d,type=single)'}
    {'ZerosTest/testClass(size=s2d,type=double)'}
    {'ZerosTest/testClass(size=s2d,type=uint16)'}
    {'ZerosTest/testClass(size=s3d,type=single)'}
    {'ZerosTest/testClass(size=s3d,type=double)'}
    {'ZerosTest/testClass(size=s3d,type=uint16)'}
    {'ZerosTest/testSize(size=s2d)'             }
    {'ZerosTest/testSize(size=s3d)'             }

Select all the tests that are not parameterized.

suite2 = suite.selectIf(~HasParameter);
disp({suite2.Name}')
    {'ZerosTest/testDefaultClass'}
    {'ZerosTest/testDefaultSize' }
    {'ZerosTest/testDefaultValue'}

Select all the parameterized tests with the parameterization property "type" and the parameter name "double". 

suite3 = suite.selectIf(HasParameter("Property","type","Name","double"));
disp({suite3.Name}')
    {'ZerosTest/testClass(size=s2d,type=double)'}
    {'ZerosTest/testClass(size=s3d,type=double)'}

Select all the parameterized tests with a parameterization property whose name starts with "t".

suite4 = suite.selectIf("ParameterProperty","t*");
disp({suite4.Name}')
    {'ZerosTest/testClass(size=s2d,type=single)'}
    {'ZerosTest/testClass(size=s2d,type=double)'}
    {'ZerosTest/testClass(size=s2d,type=uint16)'}
    {'ZerosTest/testClass(size=s3d,type=single)'}
    {'ZerosTest/testClass(size=s3d,type=double)'}
    {'ZerosTest/testClass(size=s3d,type=uint16)'}

Create filtered test suites by selecting tests based on test tags.

In a file named ExampleTest.m in your current folder, create the ExampleTest class, which uses the TestTags method-level attribute to tag individual tests. To simplify the test code, the Test methods in this example use unconditional test failures as placeholders for unimplemented tests.

classdef ExampleTest < matlab.unittest.TestCase
    methods (Test)
        function testA(testCase)
            testCase.verifyFail("Implement the test.")
        end
    end
    methods (Test,TestTags="Unit")
        function testB(testCase)
            testCase.verifyFail("Implement the test.")
        end
        function testC(testCase)
            testCase.verifyFail("Implement the test.")
        end
    end
    methods (Test,TestTags=["Unit" "FeatureA"])
        function testD(testCase)
            testCase.verifyFail("Implement the test.")
        end
    end
    methods (Test,TestTags=["System" "FeatureB"])
        function testE(testCase)
            testCase.verifyFail("Implement the test.")
        end
    end
end

Import the HasTag class.

import matlab.unittest.selectors.HasTag

Create a test suite from the ExampleTest class and display the test names. The suite contains five Test elements.

suite = testsuite("ExampleTest");
disp({suite.Name}')
    {'ExampleTest/testE'}
    {'ExampleTest/testD'}
    {'ExampleTest/testB'}
    {'ExampleTest/testC'}
    {'ExampleTest/testA'}

Select all the tests that have the tag "Unit".

suite1 = suite.selectIf("Tag","Unit");
disp({suite1.Name}')
    {'ExampleTest/testD'}
    {'ExampleTest/testB'}
    {'ExampleTest/testC'}

Select all the tests that do not have the tag "FeatureA".

suite2 =  suite.selectIf(~HasTag("FeatureA"));
disp({suite2.Name}')
    {'ExampleTest/testB'}
    {'ExampleTest/testC'}
    {'ExampleTest/testA'}

Select all the tests that have no tags.

suite3 =  suite.selectIf(~HasTag);
disp({suite3.Name}')
    {'ExampleTest/testA'}

Version History

Introduced in R2014a

expand all

See Also

| | |