when:
        inputDir.file('.gitignore').text = "some ignored file"
        inputDir.file('#ignored#').text = "some ignored file"
        inputDir.file('.git/any-name.txt').text = "some ignored file"
        inputDir.file('something/.git/deeper/dir/structure/any-name.txt').text = "some ignored file"
        inputDir.file('._ignored').text = "some ignored file"
        inputDir.file('some-file.txt~').text = "some ignored file"

    TestFile inputDir
    private static int changesLimit = SHOW_INDIVIDUAL_CHANGES_LIMIT

    def setup() {
        buildFile << """
            task theTask {
              inputs.dir "inputDir"
              outputs.files "build/outputs"
              doLast {}
            }
        """
        inputDir = file("inputDir").createDir()
    }

                input = mkdir(inputDir)
                output = file("build/output.txt")
            }
        """
        String myTask = ':myTask'

        when:
        file("inputDir1/child") << "inputFile1"
        run myTask, '-PinputDir=inputDir1'
        then:
        executedAndNotSkipped(myTask)

        when:
        file("inputDir2/child") << "inputFile2"

                    }
                }
            }
        """
        def inputDir = file("inputDir")
        inputDir.mkdirs()
        def inputJar = file("input.jar")
        def jarSources = file("jarDir")
        jarSources.mkdirs()

        when:
        inputDir.file("org/gradle/input.txt").text = "input.txt"
        inputDir.file("org/gradle/ignored.txt").text = "some"

        buildFile << """
class GenerateSources extends DefaultTask {
    @InputDirectory File inputDir
    @OutputDirectory File sourceDir
    @OutputDirectory @Optional File headerDir

    @TaskAction
    void processInputFiles() {
        project.copy {
            from inputDir
            into sourceDir.parentFile
            filter { String line ->
                line.replaceAll('REMOVE_ME', '')

import org.gradle.api.tasks.*

public class DirTransformerTask extends DefaultTask {
    private File inputDir
    private File outputDir

    @InputDirectory
    public File getInputDir() {
        return inputDir
    }

    public void setInputDir(File inputDir) {
        this.inputDir = inputDir
    }

    @OutputDirectory
    public File getOutputDir() {
        return outputDir
    }

                inputDir = project.layout.buildDirectory.dir("root")
                outputFile = project.layout.buildDirectory.file("output.txt")
            }
        """)

        when:
        executer.withStackTraceChecksDisabled()
        runAndFail "consumer"
        then:
        failure.assertHasDocumentedCause("Cannot access input property 'inputDir' of task ':consumer'. " +

                sources.set(file("inputDir"))
                outputFile.set(file("build/outputFile.txt"))
                ${ api == Api.RUNTIME_API
                    ? "inputs.dir(sources).withPathSensitivity(PathSensitivity.RELATIVE).withPropertyName('sources')"
                    : "" }
            }
        """
        def inputDir = file("inputDir").createDir()
        inputDir.createDir("some/empty/sub-directory")

        }
    }

    public static class TaskWithInputDir extends TaskWithAction {
        File inputDir;

        @Inject
        public TaskWithInputDir(File inputDir) {
            this.inputDir = inputDir;
        }

        @InputDirectory
        public File getInputDir() {
            return inputDir;
        }
    }

    public static class TaskWithInput extends TaskWithAction {

                final DirectoryProperty inputDir = project.objects.directoryProperty()
                @OutputFile
                final RegularFileProperty outputFile = project.objects.fileProperty()

                @TaskAction
                void go() {
                    def file = outputFile.asFile.get()
                    file.text = inputDir.asFile.get().listFiles()*.text.join(',')
                }