import org.gradle.api.DefaultTask;
            import org.gradle.api.tasks.InputFiles;

            abstract class AbstractCustomTask extends DefaultTask {
                private final ConfigurableFileCollection sourceFiles = getProject().files();

                @InputFiles
                public ConfigurableFileCollection getSourceFiles() {

        // Documentation
        failureDescriptionContains(documentationRegistry.getDocumentationRecommendationFor("information", "validation_problems", "unsupported_value_type"))

        where:
        annotation    | _
        "@Input"      | _
        "@InputFile"  | _
        "@InputFiles" | _
    }

    def "can use #type as task input"() {

                @Optional
                @InputFile
                File inputFile

                @OutputFile
                File outputFile

                @TaskAction
                void doAction() {
                    if (inputFile != null) {
                        outputFile.text = inputFile.text
                    }
                }
            }

            import org.gradle.api.file.*
            import org.gradle.api.tasks.*

            class TaskWithTwoFileCollectionInputs extends DefaultTask {
                @InputFiles FileCollection inputs1
                @InputFiles FileCollection inputs2

                @OutputDirectory File output = project.buildDir

                @TaskAction void action() {}
            }
        """

    abstract void execute(String... tasks)

    abstract void cleanWorkspace()

    def "input files properties are sensitive to line endings by default (#api, #pathsensitivity)"() {
        createTaskWithNormalization(InputFiles, LineEndingSensitivity.DEFAULT, pathsensitivity, api)

        buildFile << """
            taskWithInputs {
                sources.from(project.files("foo"))

                }
            }

            abstract class Consumer extends DefaultTask {
                @InputFiles
                abstract ListProperty<RegularFile> getInputFiles()
                @TaskAction
                def action() {
                    inputFiles.get().each {
                        println("action! on " + it)
                    }
                }
            }

import org.gradle.api.tasks.*

public class TransformerTask extends DefaultTask {
    private File inputFile
    private File outputFile
    private String format = "[%s]"

    @InputFile
    public File getInputFile() {
        return inputFile
    }

    public void setInputFile(File inputFile) {
        this.inputFile = inputFile
    }

    @OutputFile
    public File getOutputFile() {
        return outputFile

                if (project.findProperty("inputFile")) {
                    input = file(project.property("inputFile"))
                }
            }
        """

        file("input").createDir()

        expect:
        succeeds("myTask")

        when:
        file("inputFile").createDir()
        file("inputFile/someContents.txt").text = "input"

import org.gradle.api.provider.Property;
import org.gradle.api.tasks.CacheableTask;
import org.gradle.api.tasks.IgnoreEmptyDirectories;
import org.gradle.api.tasks.Input;
import org.gradle.api.tasks.InputFiles;
import org.gradle.api.tasks.Internal;
import org.gradle.api.tasks.Nested;
import org.gradle.api.tasks.Optional;
import org.gradle.api.tasks.OutputDirectory;
import org.gradle.api.tasks.OutputFile;

import org.gradle.api.provider.ListProperty;
import org.gradle.api.provider.Property;
import org.gradle.api.tasks.IgnoreEmptyDirectories;
import org.gradle.api.tasks.Input;
import org.gradle.api.tasks.InputFiles;
import org.gradle.api.tasks.Internal;
import org.gradle.api.tasks.Nested;
import org.gradle.api.tasks.OutputDirectory;
import org.gradle.api.tasks.PathSensitive;
import org.gradle.api.tasks.PathSensitivity;