err := sha1VerifiableBlobstore.CleanUp("/some/file")
			Expect(err).To(HaveOccurred())
			Expect(err.Error()).To(ContainSubstring("fake-clean-up-error"))
		})
	})

	Describe("Delete", func() {
		It("delegates to inner blobstore to clean up", func() {
			err := sha1VerifiableBlobstore.Delete("some-blob")
			Expect(err).ToNot(HaveOccurred())

			Expect(innerBlobstore.DeleteBlobID).To(Equal("some-blob"))
		})

		It("returns error if inner blobstore cleaning up fails", func() {
			innerBlobstore.DeleteErr = errors.New("fake-clean-up-error")

			err := sha1VerifiableBlobstore.Delete("/some/file")
			Expect(err).To(HaveOccurred())
			Expect(err.Error()).To(ContainSubstring("fake-clean-up-error"))
		})
	})

	Describe("Create", func() {
		It("delegates to inner blobstore to create blob and returns sha1 of returned blob", func() {
			innerBlobstore.CreateBlobID = "fake-blob-id"

			blobID, sha1, err := sha1VerifiableBlobstore.Create(fixturePath)
			Expect(err).ToNot(HaveOccurred())
			Expect(blobID).To(Equal("fake-blob-id"))
			Expect(sha1).To(Equal(fixtureSHA1))