logger lager.Logger
)
BeforeEach(func() {
logger = lagertest.NewTestLogger("test")
fakeCake = new(fake_cake.FakeCake)
fakeCake.GetReturns(nil, errors.New("no such image"))
baseSizer = quota_manager.NewAUFSBaseSizer(fakeCake)
})
It("asks for the size of the layer based on the base name of the rootfs path", func() {
baseSizer.BaseSize(logger, "/some/path/to/54321")
Expect(fakeCake.GetCallCount()).To(Equal(1))
Expect(fakeCake.GetArgsForCall(0)).To(Equal(layercake.DockerImageID("54321")))
})
Context("when the layer doesn't exist", func() {
It("returns an error", func() {
_, err := baseSizer.BaseSize(logger, "/i/dont/exist")
Expect(err).To(HaveOccurred())
})
})
Context("when the layer exists", func() {
Context("and has no parents", func() {
It("returns the size of the layer", func() {
fakeCake.GetReturns(&image.Image{
Size: 1234,
}, nil)
Describe("Copying", func() {
Context("when parent layer has a file", func() {
BeforeEach(func() {
Expect(ioutil.WriteFile(filepath.Join(parentDir, "somefile"), []byte("somecontents"), 0755)).To(Succeed())
})
It("should copy the parent layer to the child layer", func() {
Expect(aufsCake.Create(namespacedChildID, parentID, "")).To(Succeed())
Expect(cake.CreateCallCount()).To(Equal(1))
layerID, layerParentID, _ := cake.CreateArgsForCall(0)
Expect(layerID).To(Equal(namespacedChildID))
Expect(layerParentID).To(Equal(layercake.DockerImageID("")))
Expect(cake.GetCallCount()).To(Equal(1))
Expect(cake.GetArgsForCall(0)).To(Equal(namespacedChildID))
Expect(cake.PathCallCount()).To(Equal(2))
Expect(cake.PathArgsForCall(0)).To(Equal(parentID))
Expect(cake.PathArgsForCall(1)).To(Equal(namespacedChildID))
_, err := os.Stat(filepath.Join(namespacedChildDir, "somefile"))
Expect(err).ToNot(HaveOccurred())
})
})
Context("when parent layer has a directory", func() {
var subDirectory string
BeforeEach(func() {
subDirectory = filepath.Join(parentDir, "sub-dir")