JustBeforeEach(func() {
gc = cleaner.NewOvenCleaner(
retainer,
fakeThreshold,
)
})
Context("when the threshold is exceeded", func() {
BeforeEach(func() {
fakeThreshold.ExceededReturns(true)
})
Describe("GC", func() {
Context("when there is a single leaf", func() {
BeforeEach(func() {
fakeCake.GetAllLeavesReturns([]layercake.ID{layercake.DockerImageID("child")}, nil)
size[layercake.DockerImageID("child2")] = 2048
})
It("should not remove it when it is used by a container", func() {
fakeCake.GetReturns(&image.Image{Container: "used-by-me"}, nil)
Expect(gc.GC(logger, fakeCake)).To(Succeed())
Expect(fakeCake.RemoveCallCount()).To(Equal(0))
})
Context("when the layer has no parents", func() {
BeforeEach(func() {
fakeCake.GetReturns(&image.Image{}, nil)
})
It("removes the layer", func() {
Expect(err).NotTo(HaveOccurred())
Expect(cake.IsLeafCallCount()).To(Equal(1))
Expect(cake.IsLeafArgsForCall(0)).To(Equal(parentID))
})
})
})
Describe("GetAllLeaves", func() {
Context("when there are no cloned layers", func() {
var (
leaves []layercake.ID
err error
)
JustBeforeEach(func() {
cake.GetAllLeavesReturns([]layercake.ID{layercake.DockerImageID("1"), layercake.DockerImageID("2")}, nil)
leaves, err = aufsCake.GetAllLeaves()
Expect(err).NotTo(HaveOccurred())
})
It("should delegate to the cake", func() {
Expect(cake.GetAllLeavesCallCount()).To(Equal(1))
})
It("should get all leaves", func() {
Expect(leaves).To(HaveLen(2))
Expect(leaves[0]).To(Equal(layercake.DockerImageID("1")))
Expect(leaves[1]).To(Equal(layercake.DockerImageID("2")))
})
})