collectFiles(filteredOutputs) == [outputDir]

        when:
        def outputOfCurrent = outputDir.file("outputOfCurrent").createFile()
        def afterExecution = snapshotOutput(outputDir)
        filteredOutputs = filterOutputAfterExecution(EMPTY, beforeExecution, afterExecution)
        then:
        collectFiles(filteredOutputs) == [outputDir, outputOfCurrent]
    }

    def "previous outputs remain outputs"() {