outputFile.exists()
        outputFile.unzipTo(unpackDir)
        unpackDir.file("README").text == "README"
        unpackDir.file("subdir/A").text == "A"

        when:
        subDir.file("B").text = "B"

        then:
        buildTriggeredAndSucceeded()
        executedAndNotSkipped(":zip")
        outputFile.exists()
        outputFile.unzipTo(unpackDir)
        unpackDir.file("subdir/B").text == "B"

        when:

    def originMetadata = Mock(OriginMetadata)
    def originReader = Mock(OriginReader)
    def originWriter = Mock(OriginWriter)

    def "unpack invokes unpacker and fingerprints trees"() {
        def outputFile = temporaryFolder.file("output.txt")
        def outputDir = temporaryFolder.file("outputDir")
        def outputDirFile = outputDir.file("file.txt")