func TestGarbageCollectImageNotOldEnough(t *testing.T) {
policy := ImageGCPolicy{
HighThresholdPercent: 90,
LowThresholdPercent: 80,
}
fakeRuntime := &container.FakeRuntime{}
mockCadvisor := new(cadvisor.Mock)
manager := &realImageManager{
runtime: fakeRuntime,
policy: policy,
minAge: defaultGCAge,
imageRecords: make(map[string]*imageRecord),
cadvisor: mockCadvisor,
recorder: &record.FakeRecorder{},
}
fakeRuntime.ImageList = []container.Image{
makeImage(0, 1024),
makeImage(1, 2048),
}
// 1 image is in use, and another one is not old enough
fakeRuntime.AllPodList = []*container.Pod{
{
Containers: []*container.Container{
makeContainer(1),
},
},
}
fakeClock := util.FakeClock{Time: time.Now()}
fmt.Println(fakeClock.Now())
require.NoError(t, manager.detectImages(fakeClock.Now()))
require.Equal(t, manager.imageRecordsLen(), 2)
// no space freed since one image is in used, and another one is not old enough
spaceFreed, err := manager.freeSpace(1024, fakeClock.Now())
assert := assert.New(t)
require.NoError(t, err)
assert.EqualValues(0, spaceFreed)
assert.Len(fakeRuntime.ImageList, 2)
// move clock by minAge duration, then 1 image will be garbage collected
fakeClock.Step(manager.minAge)
spaceFreed, err = manager.freeSpace(1024, fakeClock.Now())
require.NoError(t, err)
assert.EqualValues(1024, spaceFreed)
assert.Len(fakeRuntime.ImageList, 1)
}
