def "stat an unreadable file"() {
        def unreadableFile = tmpDir.createFile("unreadable")
        unreadableFile.makeUnreadable()

        expect:
        def stat = accessor.stat(unreadableFile)
        stat.type == FileType.RegularFile
        assertSameLastModified(stat, unreadableFile)
        stat.length == 0
        assertSameAccessType(stat, DIRECT)

        cleanup:

        given:
        def rootDir = tmpDir.createDir("root")
        def unreadableFile = rootDir.file('unreadable')
        unreadableFile."create${type.capitalize()}"().makeUnreadable()

        when:
        snapshot(rootDir)

        then:
        def ex = thrown(UncheckedIOException)
        ex.message == String.format(message, unreadableFile)
        1 * statisticsCollector.recordVisitHierarchy()

        given:
        def input = file("readableFile.txt").createFile()

        def outputDirectory = file("output")
        def unreadableOutput = outputDirectory.file("unreadableFile").createFile()
        unreadableOutput.makeUnreadable()

        buildFile << """
            task sync(type: Sync) {
                from '${input.name}'
                into '${outputDirectory.name}'

        given:
        def input = file("readableFile.txt").createFile()

        def outputDirectory = file("output")
        def unreadableOutput = file("${outputDirectory.name}/unreadableFile")
        unreadableOutput.createFile().makeUnreadable()

        buildFile << """
            task copy(type: Copy) {
                from '${input.name}'
                into '${outputDirectory.name}'