}
            });

            suites.add(buildSuiteXml);
        }

        return suites;
    }

    public TestNGOptions includeGroups(String... includeGroups) {
        this.includeGroups.addAll(Arrays.asList(includeGroups));
        return this;
    }

    public TestNGOptions excludeGroups(String... excludeGroups) {
        this.excludeGroups.addAll(Arrays.asList(excludeGroups));

        when:
        testngOptions.includeGroups(groups)

        then:
        testngOptions.includeGroups == groups as Set
        testngOptions.excludeGroups.empty
    }

    def testExcludeGroups() {
        when:
        testngOptions.excludeGroups(groups)

        then:
        testngOptions.excludeGroups == groups as Set
        testngOptions.includeGroups.empty
    }

        this.suiteThreadPoolSize = suiteThreadPoolSize;
        this.useDefaultListener = useDefaultListener;
        this.threadPoolFactoryClass = threadPoolFactoryClass;
        this.includeGroups = includeGroups;
        this.excludeGroups = excludeGroups;
        this.listeners = listeners;
        this.configFailurePolicy = configFailurePolicy;
        this.preserveOrder = preserveOrder;

}

// tag::test-config[]
tasks.named<Test>("test") {
    useTestNG {
        val options = this as TestNGOptions
        options.excludeGroups("integrationTests")
        options.includeGroups("unitTests")
    }
}

repositories {
    mavenCentral()
}

dependencies {
    testImplementation 'org.testng:testng:6.3.1'
}

// tag::test-config[]
test {
    useTestNG {
        excludeGroups 'integrationTests'
        includeGroups 'unitTests'
    }
}

        then:
        executedAndNotSkipped ':test'

        where:
        property              | modification
        'excludeGroups'       | '= ["group to exclude"]'
        'includeGroups'       | '= ["group to include"]'
        'outputDirectory'     | '= file("$buildDir/my-out")'
        'suiteXmlFiles'       | '= [file("suite.xml")]'
        'suiteXmlBuilder()'   | '''

        buildFile << """
            ext {
                ngIncluded = "database"
                ngExcluded = "slow"
            }
            test {
                useTestNG {
                    includeGroups ngIncluded
                    excludeGroups ngExcluded
                }
            }
        """.stripIndent()
        file('src/test/java/org/gradle/groups/SomeTest.java') << '''

            root(':', ':test:') {
                module('org:foo:1.0')
                module('other:bar:2.0')
            }
        }

        where:
        notation << [
            "includeGroup 'org'",
            "includeGroupByRegex 'org.*'",
            "includeModule('org', 'foo')",
            "includeModuleByRegex('or[g]', 'f[o]+')",
            "includeVersion('org', 'foo', '1.0')",

        }
    }
    google {
        content {
            includeGroup("com.android.databinding")
            includeGroupByRegex("com\\.android\\.tools(\\.[a-z.\\-]*)?")
        }
    }
    maven {
        name = "CHAMP libs"
        url = uri("https://releases.usethesource.io/maven/")
        mavenContent {
            includeGroup("io.usethesource")
        }
    }
    mavenCentral()

// tag::repository-filter[]
repositories {
    maven {
        url "https://repo.mycompany.com/maven2"
        content {
            // this repository *only* contains artifacts with group "my.company"
            includeGroup "my.company"
        }
    }
    mavenCentral {
        content {
            // this repository contains everything BUT artifacts with group starting with "my.company"
            excludeGroupByRegex "my\\.company.*"