restIntegTestTask.include("**/*IT.class");
            restIntegTestTask.systemProperty("tests.rest.load_packaged", Boolean.FALSE.toString());
            if (systemProperty(TESTS_REST_CLUSTER) == null) {
                if (systemProperty(TESTS_CLUSTER) != null || systemProperty(TESTS_CLUSTER_NAME) != null) {
                    throw new IllegalArgumentException(

fun Project.systemProperty(propertyName: String) = providers.systemProperty(propertyName)


fun Project.environmentVariable(propertyName: String) = providers.environmentVariable(propertyName)


fun Project.propertyFromAnySource(propertyName: String) = gradleProperty(propertyName)
    .orElse(systemProperty(propertyName))
    .orElse(environmentVariable(propertyName))

  })

  maxParallelForks = Runtime.getRuntime().availableProcessors() * 2
  testLogging {
    exceptionFormat = TestExceptionFormat.FULL
  }

  systemProperty("okhttp.platform", platform)
  systemProperty("junit.jupiter.extensions.autodetection.enabled", "true")
}

tasks.withType<Test>().configureEach {
  environment("OKHTTP_ROOT", rootDir)
}

plugins.withId("org.jetbrains.kotlin.jvm") {

                Logger logger = project.getLogger();
                String bwcBranch = this.gitExtension.getBwcBranch().get();
                final String refspec = providerFactory.systemProperty("bwc.refspec." + bwcBranch)
                    .orElse(providerFactory.systemProperty("tests.bwc.refspec." + bwcBranch))
                    .getOrElse(remote.get() + "/" + bwcBranch);

                String effectiveRefSpec = maybeAlignedRefSpec(logger, refspec);

  integTestImplementation "org.xmlunit:xmlunit-core:2.8.2"
}

tasks.register("integTest", Test) {
  inputs.dir(file("src/testKit")).withPropertyName("testkit dir").withPathSensitivity(PathSensitivity.RELATIVE)
  systemProperty 'test.version_under_test', version
  testClassesDirs = sourceSets.integTest.output.classesDirs
  classpath = sourceSets.integTest.runtimeClasspath
  useJUnitPlatform()
}

            test.systemProperty("es.transport.cname_in_publish_address", "true");

            // Set netty system properties to the properties we configure in jvm.options
            test.systemProperty("io.netty.noUnsafe", "true");
            test.systemProperty("io.netty.noKeySetOptimization", "true");
            test.systemProperty("io.netty.recycler.maxCapacityPerThread", "0");

testClusters.register("runTask") {
    testDistribution = providers.systemProperty('run.distribution').orElse('default').forUseAtConfigurationTime().get()
    if (providers.systemProperty('run.distribution').orElse('default').forUseAtConfigurationTime().get() == 'default') {
      String licenseType = providers.systemProperty("run.license_type").orElse("basic").forUseAtConfigurationTime().get()
      if (licenseType == 'trial') {

                    "Expected elasticsearch version to be numbers only of the form  X.Y.Z but it was: " +
                            elasticsearch
            );
        }
        String qualifier = providers.systemProperty("build.version_qualifier")
                .orElse("")
                .forUseAtConfigurationTime()
                .get();
        if (qualifier.isEmpty() == false) {

  if (project.bwc_tests_enabled) {
    dependsOn tasks.matching { it.name ==~ /v[0-9\.]+#bwcTest/ }
  }
}

tasks.withType(Test).configureEach {
  onlyIf { project.bwc_tests_enabled }
  nonInputProperties.systemProperty 'tests.bwc', 'true'
}

tasks.matching { it.name.equals("check") }.configureEach {dependsOn(bwcTestSnapshots) }

            }

            dependencies {
                testImplementation 'junit:junit:4.12'
            }

            tasks.named('test').configure {
                nonInputProperties.systemProperty("foo", project.getProperty('foo'))
            }
        """

        when:
        def result = gradleRunner("test", '-Dtests.seed=default', '-Pfoo=bar').build()

        then: