return fmt.Sprintf("Expected `%s' to not be a directory", actual)
}

var _ = Describe("tarballCompressor", func() {
	var (
		dstDir     string
		cmdRunner  boshsys.CmdRunner
		fs         boshsys.FileSystem
		compressor Compressor
	)

	BeforeEach(func() {
		logger := boshlog.NewLogger(boshlog.LevelNone)
		cmdRunner = boshsys.NewExecCmdRunner(logger)
		fs = boshsys.NewOsFileSystem(logger)
		tmpDir, err := fs.TempDir("tarballCompressor-test")
		Expect(err).NotTo(HaveOccurred())
		dstDir = filepath.Join(tmpDir, "TestCompressor")
		compressor = NewTarballCompressor(cmdRunner, fs)
	})

	BeforeEach(func() {
		fs.MkdirAll(dstDir, os.ModePerm)
	})

	AfterEach(func() {
		fs.RemoveAll(dstDir)
	})

	Describe("CompressFilesInDir", func() {
		It("compresses the files in the given directory", func() {
				cmdRunner  boshsys.CmdRunner
				compressor boshcmd.Compressor
			)

			BeforeEach(func() {
				fs = boshsys.NewOsFileSystem(logger)

				cmdRunner = boshsys.NewExecCmdRunner(logger)
				compressor = boshcmd.NewTarballCompressor(cmdRunner, fs)

				renderedJobListCompressor = NewRenderedJobListCompressor(fs, compressor, fakeSHA1Calculator, logger)
			})

			It("copies rendered jobs into a new temp dir, compresses the temp dir, and wraps it in a RenderedJobListArchive", func() {
				// create rendered job with 2 rendered scripts
				renderedJobDir0, err := fs.TempDir("RenderedJobListCompressorTest")
				Expect(err).ToNot(HaveOccurred())
				renderedJob0 := NewRenderedJob(bireljob.Job{Name: "fake-job-name-0"}, renderedJobDir0, fs, logger)
				defer func() { err := renderedJob0.Delete(); Expect(err).ToNot(HaveOccurred()) }()
				err = fs.WriteFileString(filepath.Join(renderedJobDir0, "script-0"), "fake-rendered-job-0-script-0-content")
				Expect(err).ToNot(HaveOccurred())
				err = fs.WriteFileString(filepath.Join(renderedJobDir0, "script-1"), "fake-rendered-job-0-script-1-content")
				Expect(err).ToNot(HaveOccurred())
				renderedJobList.Add(renderedJob0)

				// create another rendered job with 1 rendered script
				renderedJobDir1, err := fs.TempDir("RenderedJobListCompressorTest")
				Expect(err).ToNot(HaveOccurred())
				renderedJob1 := NewRenderedJob(bireljob.Job{Name: "fake-job-name-1"}, renderedJobDir1, fs, logger)
				defer func() { err := renderedJob1.Delete(); Expect(err).ToNot(HaveOccurred()) }()
				err = fs.WriteFileString(filepath.Join(renderedJobDir1, "script-0"), "fake-rendered-job-1-script-0-content")