}

    /**
     * Writes the report file to [outputDirectory].
     *
     * The file is laid out in such a way as to allow extracting the pure JSON model,
     * see [HtmlReportWriter].
     */
    internal
    fun writeReportFileTo(outputDirectory: File, buildDisplayName: String?, cacheAction: String, requestedTasks: String?, totalProblemCount: Int): File? {
        var reportFile: File?
        modifyState {

                doLast {
                    println(file.get().asFile.text)
                }
            }
        """

        when:
        configurationCacheRun 'answer'

        then:
        '42' == file('build/dir/answer.txt').text
        outputContains '42'

        where:
        desc   | provider
        'dir'  | 'dir(computedDirName).map { it.file("answer.txt") }'

            include("a")
            include("b")
            include("c")
        """
        file("a/build.gradle") << """
            plugins.apply(my.MyPlugin)
        """
        file("b/build.gradle") << """
            plugins.apply(my.MyPlugin)
        """
        file("c/build.gradle") << """
            plugins.apply(my.MyPlugin)
        """

        when:

            include("c")
        """
        file("build.gradle") << """
            project(":a") {
                plugins.apply(my.MyPlugin)
            }
            project(":b") {
                plugins.apply(my.MyPlugin)
            }
        """
        file("a/build.gradle") << """
            myExtension.message = "project a"
        """
        file("b/build.gradle") << """

            import java.nio.file.Files
            import java.nio.file.Path
            import static org.gradle.testkit.runner.TaskOutcome.*
            import spock.lang.Specification

            class $className extends Specification {
                File testProjectDir = Files.createTempDirectory("GradleRunnerMiscEndUserIntegrationTest").toFile()
                File buildFile
                File settingsFile

                it.getOutputDir().set(new File(project.buildDir, "mytask"))
            }

            tasks.register("consumer", ConsumerTask.class) {
                it.getOutputFile().set(new File(project.buildDir, "consumer/out.txt"))

                MyTask myTask = (MyTask) tasks.getByName("myTask")
                Provider<Set<File>> inputs = myTask.outputDir.map {
                    File[] files = it.asFile.listFiles()

    private FileSystemLocationSnapshot snapshotOf(File file) {
        return fileSystemAccess.read(file.getAbsolutePath());
    }

    private boolean shouldUseFromCache(File original) {
        // Transform everything that has not already been transformed
        return !original.toPath().startsWith(cache.getBaseDir().toPath());
    }

    private void markAccessed(File result, File original) {
        if (!result.equals(original)) {

import org.gradle.util.Path
import java.io.File


/**
 * State cached for a project.
 */
internal
sealed class CachedProjectState(
    val path: Path,
    val projectDir: File,
    val buildFile: File
)


internal
class ProjectWithWork(
    path: Path,
    projectDir: File,
    buildFile: File,
    val buildDir: File,

    @TempDir
    File testProjectDir
    File buildFile
    File settingsFile
    @TempDir
    File buildCacheDir

    def setup() {
        buildFile = new File(testProjectDir, defaultBuildFileName)
        settingsFile = new File(testProjectDir, "settings.gradle")
    }

    protected String getDefaultBuildFileName() {

        addPluginBuildScript('plugin-0', 'my.plugin-0', 'my.Plugin0')
        file('plugin-0/settings.gradle') << '''
        '''

        and:
        addConventionPluginImplementation('plugin-1', 'Plugin1')
        file('plugin-1/settings.gradle') << '''
            includeBuild("../plugin-0")
        '''
        file("plugin-1/build.gradle") << '''
            plugins {
                id("groovy-gradle-plugin")