def "allows @InputFiles of task with no actions to be null"() {
        buildFile << """
            class FooTask extends DefaultTask {
               @InputFiles
               FileCollection bar
            }

            task foo(type: FooTask)
        """

        when:
        run "foo"

        then:
        executed ":foo"
    }

        result.assertTasksExecutedInOrder(":api:foo", ":impl:bar")
    }

    def "supports buildSrc"() {
        file("buildSrc/src/main/java/FooTask.java") << """
            import org.gradle.api.DefaultTask;
            import org.gradle.api.tasks.TaskAction;

            public class FooTask extends DefaultTask {
                @TaskAction public void logStuff(){

    def "executing task which depends on source set classes does not build resources"() {
        buildFile("""
            plugins {
                id 'java'
            }

            def fooTask = tasks.register("foo") {
                outputs.file(project.layout.buildDirectory.dir("fooOut"))
            }

            tasks.register("bar") {
                inputs.files(java.sourceSets.main.output.classesDirs)

    is Accessor.ForConfiguration -> fragmentsForConfiguration(accessor)
    is Accessor.ForExtension -> fragmentsForExtension(accessor)
    is Accessor.ForConvention -> fragmentsForConvention(accessor)
    is Accessor.ForTask -> fragmentsForTask(accessor)
    is Accessor.ForContainerElement -> fragmentsForContainerElement(accessor)
}


private
fun fragmentsForConfiguration(accessor: Accessor.ForConfiguration): Fragments = accessor.run {

            error(annotationInvalidInContextConfig { annotation(ann.simpleName).type('MyTask').property('options.nestedThing').forTask() }, 'validation_problems', 'annotation_invalid_in_context'),
            error(annotationInvalidInContextConfig { annotation(ann.simpleName).type('MyTask').property('thing').forTask() }, 'validation_problems', 'annotation_invalid_in_context')
        ])

        and:
        verifyAll(receivedProblem(0)) {

            validAnnotations = "@Console, @Inject, @Input, @InputDirectory, @InputFile, @InputFiles, @Internal, @Nested, @ReplacedBy or @ServiceReference"
            this
        }

        AnnotationContext forTask() {