Expect(os.RemoveAll(root)).To(Succeed()) }) Describe("Register", func() { Context("after registering a layer", func() { var id layercake.ID var parent layercake.ID BeforeEach(func() { id = layercake.ContainerID("") parent = layercake.ContainerID("") }) ItCanReadWriteTheLayer := func() { It("can read and write files", func() { p, err := cake.Path(id) Expect(err).NotTo(HaveOccurred()) Expect(ioutil.WriteFile(path.Join(p, "foo"), []byte("hi"), 0700)).To(Succeed()) p, err = cake.Path(id) Expect(err).NotTo(HaveOccurred()) Expect(path.Join(p, "foo")).To(BeAnExistingFile()) }) It("can get back the image", func() { img, err := cake.Get(id) Expect(err).NotTo(HaveOccurred()) Expect(img.ID).To(Equal(id.GraphID())) Expect(img.Parent).To(Equal(parent.GraphID())) }) }