@TaskAction fun action() { println(inputValue.get()) }
}

// tag::system-properties-task-inputs[]
tasks.register<PrintValue>("printProperty") {
    // Using the Gradle API, provides a lazy Provider<String> wired to a task input
    inputValue = providers.systemProperty("system")
}

        }.findAll {
            !it.contains('.')
        }.unique().sort()
    }

    @Unroll("tasks inputs and outputs are wired correctly A: #aEnabled, B: #bEnabled")
    def "tasks inputs and outputs are wired correctly"() {
        when:
        container.a.required = aEnabled
        container.b.required = bEnabled

        then:
        outputFiles*.name == fileNames

    @TaskAction void action() { println(inputValue.get()) }
}

// tag::system-properties-task-inputs[]
tasks.register('printProperty', PrintValue) {
    // Using the Gradle API, provides a lazy Provider<String> wired to a task input
    inputValue = providers.systemProperty('system')
}

    @TaskAction fun action() { println(inputValue.get()) }
}

// tag::execution[]
tasks.register<PrintValue>("printValue") {
    // Using the Gradle API, provides a lazy Provider<String> wired to a task input
    inputValue = providers.environmentVariable("ENVIRONMENTAL")
}

    @TaskAction fun action() { println(inputValue.get()) }
}

// tag::gradle-properties-task-inputs[]
tasks.register<PrintValue>("printProperty") {
    // Using the API, provides a lazy Provider<String> wired to a task input
    inputValue = providers.gradleProperty("gradlePropertiesProp")
}

    @TaskAction void action() { println(inputValue.get()) }
}

// tag::execution[]
tasks.register('printValue', PrintValue) {
    // Using the Gradle API, provides a lazy Provider<String> wired to a task input
    inputValue = providers.environmentVariable('ENVIRONMENTAL')
}

    @TaskAction void action() { println(inputValue.get()) }
}

// tag::gradle-properties-task-inputs[]
tasks.register('printProperty', PrintValue) {
    // Using the API, provides a lazy Provider<String> wired to a task input
    inputValue = providers.gradleProperty('gradlePropertiesProp')
}

            }
        '''
    }

    /**
     * Helper method to setup a custom task wired to the test in two ways:
     * <ol>
     *     <li>A direct dependency via dependsOn declarartion</li>
     *     <li>Via Test#binaryResultsDirectory output wired to customTask#customInput</li>
     * </ol>
     *

== Defining and using a composite build

This sample shows how 2 Gradle builds that are normally developed separately and combined using binary integration can be wired together into a composite build with source integration. The `my-utils` multiproject build produces 2 different java libraries, and the `my-app` build produces an executable using functions from those libraries.

 * is a thin wrapper around {@link InetAddresses} and {@link InternetDomainName}; the unit tests for
 * those classes explore numerous corner cases. The intent here is to confirm that everything is
 * wired up properly.
 *
 * @author Craig Berry
 */
public final class HostSpecifierTest extends TestCase {

  private static final ImmutableList<String> GOOD_IPS =