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kubelet/images: refactor image gc unit tests

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Signed-off-by: Peter Hunt <pehunt@redhat.com>
This commit is contained in:
Peter Hunt 2023-10-06 14:16:02 -04:00
parent e22ebf13a9
commit 28f335a339
1 changed files with 16 additions and 31 deletions
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47
pkg/kubelet/images/image_gc_manager_test.go
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@ -255,11 +255,8 @@ func TestDoNotDeletePinnedImage(t *testing.T) {
},
}
spaceFreed, err := manager.freeSpace(ctx, 4096, time.Now())
assert := assert.New(t)
require.NoError(t, err)
assert.EqualValues(1024, spaceFreed)
assert.Len(fakeRuntime.ImageList, 1)
getImagesAndFreeSpace(ctx, t, assert, manager, fakeRuntime, 4096, 1024, 1, time.Now())
}
func TestDeleteUnPinnedImage(t *testing.T) {
@ -280,11 +277,8 @@ func TestDeleteUnPinnedImage(t *testing.T) {
},
}
spaceFreed, err := manager.freeSpace(ctx, 2048, time.Now())
assert := assert.New(t)
require.NoError(t, err)
assert.EqualValues(2048, spaceFreed)
assert.Len(fakeRuntime.ImageList, 0)
getImagesAndFreeSpace(ctx, t, assert, manager, fakeRuntime, 2048, 2048, 0, time.Now())
}
func TestAllPinnedImages(t *testing.T) {
@ -306,11 +300,8 @@ func TestAllPinnedImages(t *testing.T) {
},
}
spaceFreed, err := manager.freeSpace(ctx, 2048, time.Now())
assert := assert.New(t)
require.NoError(t, err)
assert.EqualValues(0, spaceFreed)
assert.Len(fakeRuntime.ImageList, 2)
getImagesAndFreeSpace(ctx, t, assert, manager, fakeRuntime, 2048, 0, 2, time.Now())
}
func TestDetectImagesContainerStopped(t *testing.T) {
@ -404,11 +395,8 @@ func TestFreeSpaceImagesInUseContainersAreIgnored(t *testing.T) {
}},
}
spaceFreed, err := manager.freeSpace(ctx, 2048, time.Now())
assert := assert.New(t)
require.NoError(t, err)
assert.EqualValues(1024, spaceFreed)
assert.Len(fakeRuntime.ImageList, 1)
getImagesAndFreeSpace(ctx, t, assert, manager, fakeRuntime, 2048, 1024, 1, time.Now())
}
func TestDeleteUnusedImagesRemoveAllUnusedImages(t *testing.T) {
@ -487,11 +475,8 @@ func TestFreeSpaceRemoveByLeastRecentlyUsed(t *testing.T) {
// We're setting the delete time one minute in the future, so the time the image
// was first detected and the delete time are different.
spaceFreed, err := manager.freeSpace(ctx, 1024, time.Now().Add(time.Minute))
assert := assert.New(t)
require.NoError(t, err)
assert.EqualValues(1024, spaceFreed)
assert.Len(fakeRuntime.ImageList, 1)
getImagesAndFreeSpace(ctx, t, assert, manager, fakeRuntime, 1024, 1024, 1, time.Now().Add(time.Minute))
}
func TestFreeSpaceTiesBrokenByDetectedTime(t *testing.T) {
@ -526,11 +511,8 @@ func TestFreeSpaceTiesBrokenByDetectedTime(t *testing.T) {
require.NoError(t, err)
require.Equal(t, manager.imageRecordsLen(), 2)
spaceFreed, err := manager.freeSpace(ctx, 1024, time.Now())
assert := assert.New(t)
require.NoError(t, err)
assert.EqualValues(2048, spaceFreed)
assert.Len(fakeRuntime.ImageList, 1)
getImagesAndFreeSpace(ctx, t, assert, manager, fakeRuntime, 1024, 2048, 1, time.Now())
}
func TestGarbageCollectBelowLowThreshold(t *testing.T) {
@ -653,18 +635,21 @@ func TestGarbageCollectImageNotOldEnough(t *testing.T) {
require.NoError(t, err)
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(ctx, 1024, fakeClock.Now())
assert := assert.New(t)
require.NoError(t, err)
assert.EqualValues(0, spaceFreed)
assert.Len(fakeRuntime.ImageList, 2)
getImagesAndFreeSpace(ctx, t, assert, manager, fakeRuntime, 1024, 0, 2, fakeClock.Now())
// move clock by minAge duration, then 1 image will be garbage collected
fakeClock.Step(policy.MinAge)
spaceFreed, err = manager.freeSpace(ctx, 1024, fakeClock.Now())
getImagesAndFreeSpace(ctx, t, assert, manager, fakeRuntime, 1024, 1024, 1, fakeClock.Now())
}
func getImagesAndFreeSpace(ctx context.Context, t *testing.T, assert *assert.Assertions, im *realImageGCManager, fakeRuntime *containertest.FakeRuntime, spaceToFree, expectedSpaceFreed int64, imagesLen int, freeTime time.Time) {
images, err := im.imagesInEvictionOrder(ctx, freeTime)
require.NoError(t, err)
assert.EqualValues(1024, spaceFreed)
assert.Len(fakeRuntime.ImageList, 1)
spaceFreed, err := im.freeSpace(ctx, spaceToFree, freeTime, images)
require.NoError(t, err)
assert.EqualValues(expectedSpaceFreed, spaceFreed)
assert.Len(fakeRuntime.ImageList, imagesLen)
}
func TestValidateImageGCPolicy(t *testing.T) {