launcher.withTestsFor { TestSpecs specs ->
                specs.forTaskPath(':myTestTask').includeClass('org.my.MyClass')
            }
        }

        then:
        Throwable exception = thrown(TestExecutionException)
        exception.cause.message == "Task ':myTestTask' of type 'CustomTestTask_Decorated' not supported for executing tests via TestLauncher API."
    }

 * limitations under the License.
 */

package org.gradle.integtests.tooling.fixture

import org.gradle.test.fixtures.file.TestFile

abstract class Snippets {

    /**
     * Defines the 'myTestTask' test task in the build script with a custom AbstractTestTask implementation in buildSrc.
     */
    static void customTestTask(TestFile buildScript, TestFile buildSrcDir) {

        ValidatingProgressEventListener validatingListener = new ValidatingProgressEventListener()

        when:
        withConnection {
            it.newBuild().forTasks('myTestTask').addProgressListener(validatingListener).run()
        }

        then:
        validatingListener.receivedCustomTestTaskProgressEvents()
    }

----
val test by testing.suites.existing(JvmTestSuite::class)
tasks.named<Test>("myTestTask") {
    testClassesDirs = files(test.map { it.sources.output.classesDirs })
    classpath = files(test.map { it.sources.runtimeClasspath })
}
----
=====
[.multi-language-sample]
=====
.build.gradle
[source,groovy]
----
tasks.myTestTask {
    testClassesDirs = testing.suites.test.sources.output.classesDirs