assert file("build").deleteDir()

        when:
        buildFile.text = buildFileWithSources("AbstractThing.groovy", "JavaThing.java", "Thing.groovy")
        succeeds "compile"
        def reversedBytes = resultClass.bytes

        then:
        reversedBytes == originalBytes

        assert file("build").deleteDir()

        when:

        when:
        def movedLocation = temporaryFolder.file("moved-location")
        originalLocation.renameTo(movedLocation)
        movedLocation.file("build").deleteDir()
        movedLocation.file(".gradle").deleteDir()

        executer.usingProjectDirectory(movedLocation)
        withBuildCache().run "jar", "customTask"

        then:
        // Built-in tasks are loaded from cache

        runCacheableBuild(pushToCacheEvents)
        then:
        writingOperations(pushToCacheEvents).size() == maybeIncludeLocalBuildOperations(1)

        when:
        file("build").deleteDir()
        and:
        def pullFromCacheResults = ProgressEvents.create()
        runCacheableBuild(pullFromCacheResults)
        then:

                if (!FILES_TO_PRESERVE.contains(it.name)) {
                    it.deleteDir()
                }
            }
        } else if (specification.hasProperty("testDirectory")) {
            specification.testDirectory.listFiles().each {
                if (!FILES_TO_PRESERVE.contains(it.name)) {
                    it.deleteDir()
                }
            }

            .withArguments( '--build-cache', 'cacheableTask')
            .build()

        then:
        result.task(":cacheableTask").outcome == SUCCESS

        when:
        new File(testProjectDir, 'build').deleteDir()
        result = runner()
            .withArguments( '--build-cache', 'cacheableTask')
            .build()

        then:
        result.task(":cacheableTask").outcome == FROM_CACHE
    }

    def "handles java home that is a symlink"() {
        given:
        def javaHome = Jvm.current().javaHome
        def javaLink = file("javaLink")
        javaLink.createLink(javaHome)
        file("tmp").createDir().deleteDir()

        String linkPath = TextUtil.escapeString(javaLink.absolutePath)
        file("gradle.properties") << "org.gradle.java.home=$linkPath"

        when:

        localCache.listCacheFailedFiles().size() == 1

        and:
        !localCache.hasCacheEntry(cacheKey)

        when:
        file("build").deleteDir()

        then:
        succeeds("customTask")
    }

    def "corrupted cache artifact metadata provides useful error message"() {
        when:
        buildFile << """
            @CacheableTask

        def visitedDirectories = []
        def fileVisitor = [visitFile: { visitedFiles << it }, visitDir: { visitedDirectories << it }] as FileVisitor

        when:
        fileTree.visit(fileVisitor)
        rootDir.deleteDir()

        then:
        visitedFiles.size() == 3
        visitedFiles.each {
            assert !it.isDirectory() && it.getSize() == 5 && it.getLastModified() >= minimumTimestamp
        }

        result.assertTaskSkipped ':runWork'
        outputContains ':runWork UP-TO-DATE'

        and:
        outputDoesNotContain expectedOutput

        when: 'the outputs are deleted'
        file('build').deleteDir()

        and: 'task runs for the 3rd time'
        runWork()

        then: 'it is skipped because FROM-CACHE'
        result.assertTaskSkipped ':runWork'
        outputContains ':runWork FROM-CACHE'

    abstract protected void setupProjectInOriginalLocation()

    abstract protected void moveFilesAround()

    @SuppressWarnings("GrMethodMayBeStatic")
    protected void removeResults() {
        file("build").deleteDir()
    }

    abstract protected def extractResults()

    protected void assertResultsEqual(def originalResult, def movedResult) {
        assert movedResult == originalResult
    }