})
})
})
Context("when the cake does not contain any of the layers", func() {
JustBeforeEach(func() {
_, err := remote.Fetch(parseURL("docker:///foo#some-tag"), 67)
Expect(err).NotTo(HaveOccurred())
})
It("registers each of the layers in the graph", func() {
Expect(fakeCake.RegisterCallCount()).To(Equal(3))
})
It("registers the layer contents under its Strong IDs", func() {
image, reader := fakeCake.RegisterArgsForCall(0)
Expect(image.ID).To(Equal("abc-id"))
Expect(image.Parent).To(Equal("abc-parent-id"))
b, err := ioutil.ReadAll(reader)
Expect(err).NotTo(HaveOccurred())
Expect(string(b)).To(Equal("abc-def-contents"))
})
It("registers the layer with the correct size", func() {
image, _ := fakeCake.RegisterArgsForCall(0)
Expect(image.Size).To(BeEquivalentTo(1))
})
})
Context("when the graph already contains a layer", func() {
