For the default test suite named 'test', no additional configuration is necessary.  The aggregated reports and their backing tasks of type `JacocoReport` are synthesized based on the test suites existing in the `application` project.  Test suites having identical `testType` properties will be aggregated.

Running the tests and generate the report:

    }

    def "attaches events to correct test descriptors of a suite"() {
        buildFile << "test.useTestNG { suites 'suite.xml' }"

        file("suite.xml") << """<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="AwesomeSuite">
  <test name='The Foo Test'><classes><class name='FooTest'/></classes></test>
</suite>"""

        when: succeeds "test"

        then:

        }

        file("suite.xml") << """<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="AwesomeSuite" parallel="tests" thread-count="${threadCount}">
  $suiteXml
</suite>"""
    }

    @Issue("GRADLE-3190")
    def "runs with multiple parallel threads"() {
        given:

//        testSuites.withType(CustomTestSuite).beforeEach { suite ->
        testSuites.withType(CustomTestSuite) { suite ->
            suite.sources.create('tests', CustomTestSourceSet)
            suite.binaries.create('tests', CustomTestBinary)
        }
    }
}
"""
    }

    def "plugin can define custom test suite and attach source sets and binaries"() {
        buildFile << """

        containsEvent(STARTED, DefaultTestClassDescriptor, 'Gradle suite > Gradle test > org.company.TestWithBrokenSetupMethod')
        containsEvent(STARTED, DefaultTestMethodDescriptor, 'Gradle suite > Gradle test > org.company.TestWithBrokenSetupMethod > broken')
        containsEvent(FINISHED, DefaultTestMethodDescriptor, 'Gradle suite > Gradle test > org.company.TestWithBrokenSetupMethod > broken')

            }
        """

        file("suite.xml") << """<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="AwesomeSuite" parallel="tests">
  <test name="AwesomeTest" preserve-order="false">
    <classes>
      <class name="FooTest"/>
      <class name="BarTest"/>
    </classes>
  </test>
</suite>"""

        when: run("test")

    }

    private TestSuiteType createNamedTestTypeAndVerifyUniqueness(Project project, TestSuite suite, String tt) {
        final TestSuite other = testTypesInUse.putIfAbsent(tt, suite);
        if (null != other && other != suite) {

}

version = '1.0.0'
group = 'org.gradle.sample'

repositories {
    mavenCentral()
}

// tag::multi-configure[]
testing {
    suites {
        def applyMockito = { suite -> // <1>
            suite.useJUnitJupiter()
            suite.dependencies {
                implementation('org.mockito:mockito-junit-jupiter:4.6.1')
            }
        }

        /* This is the equivalent of:

   * order for a socket to be compatible the enabled cipher suites and protocols must intersect.
   *
   * For cipher suites, at least one of the [required cipher suites][cipherSuites] must match the
   * socket's enabled cipher suites. If there are no required cipher suites the socket must have at
   * least one cipher suite enabled.
   *

    }
}
notForAccessorGeneration {
    dependencies {
        sharedArchTestClasses(project(":internal-architecture-testing"))
    }
}

testing {
    suites {
        create("archTest", JvmTestSuite::class) {
            useJUnitJupiter()
            dependencies {
                implementation(project.dependencies.create(project))
                notForAccessorGeneration {