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scheduler: tests for generic ephemeral volumes

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This covers some failure scenarios and feature gate enablement.
This commit is contained in:
Patrick Ohly 2021-02-19 15:48:47 +01:00
parent d2cc70ee2c
commit 512401a8a2
1 changed files with 64 additions and 0 deletions
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64
pkg/controller/volume/scheduling/scheduler_binder_test.go
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@ -77,6 +77,11 @@ var (
boundMigrationPVC = makeTestPVC("pvc-migration-bound", "1G", "", pvcBound, "pv-migration-bound", "1", &waitClass)
provMigrationPVCBound = makeTestPVC("pvc-migration-provisioned", "1Gi", "", pvcBound, "pv-migration-bound", "1", &waitClassWithProvisioner)
// PVCs and PV for GenericEphemeralVolume
conflictingGenericPVC = makeGenericEphemeralPVC("test-volume", false /* not owned*/)
correctGenericPVC = makeGenericEphemeralPVC("test-volume", true /* owned */)
pvBoundGeneric = makeTestPV("pv-bound", "node1", "1G", "1", correctGenericPVC, waitClass)
// PVs for manual binding
pvNode1a = makeTestPV("pv-node1a", "node1", "5G", "1", nil, waitClass)
pvNode1b = makeTestPV("pv-node1b", "node1", "10G", "1", nil, waitClass)
@ -583,6 +588,22 @@ const (
pvcSelectedNode
)
func makeGenericEphemeralPVC(volumeName string, owned bool) *v1.PersistentVolumeClaim {
pod := makePodWithGenericEphemeral()
pvc := makeTestPVC(pod.Name+"-"+volumeName, "1G", "", pvcBound, "pv-bound", "1", &immediateClass)
if owned {
controller := true
pvc.OwnerReferences = []metav1.OwnerReference{
{
Name: pod.Name,
UID: pod.UID,
Controller: &controller,
},
}
}
return pvc
}
func makeTestPVC(name, size, node string, pvcBoundState int, pvName, resourceVersion string, className *string) *v1.PersistentVolumeClaim {
fs := v1.PersistentVolumeFilesystem
pvc := &v1.PersistentVolumeClaim{
@ -784,6 +805,19 @@ func makePodWithoutPVC() *v1.Pod {
return pod
}
func makePodWithGenericEphemeral(volumeNames ...string) *v1.Pod {
pod := makePod(nil)
for _, volumeName := range volumeNames {
pod.Spec.Volumes = append(pod.Spec.Volumes, v1.Volume{
Name: volumeName,
VolumeSource: v1.VolumeSource{
Ephemeral: &v1.EphemeralVolumeSource{},
},
})
}
return pod
}
func makeBinding(pvc *v1.PersistentVolumeClaim, pv *v1.PersistentVolume) *BindingInfo {
return &BindingInfo{pvc: pvc.DeepCopy(), pv: pv.DeepCopy()}
}
@ -857,6 +891,9 @@ func TestFindPodVolumesWithoutProvisioning(t *testing.T) {
// If nil, makePod with podPVCs
pod *v1.Pod
// GenericEphemeralVolume feature enabled?
ephemeral bool
// Expected podBindingCache fields
expectedBindings []*BindingInfo
@ -953,6 +990,31 @@ func TestFindPodVolumesWithoutProvisioning(t *testing.T) {
podPVCs: []*v1.PersistentVolumeClaim{immediateUnboundPVC, unboundPVC},
shouldFail: true,
},
"generic-ephemeral,no-pvc": {
pod: makePodWithGenericEphemeral("no-such-pvc"),
ephemeral: true,
shouldFail: true,
},
"generic-ephemeral,with-pvc": {
pod: makePodWithGenericEphemeral("test-volume"),
cachePVCs: []*v1.PersistentVolumeClaim{correctGenericPVC},
pvs: []*v1.PersistentVolume{pvBoundGeneric},
ephemeral: true,
},
"generic-ephemeral,wrong-pvc": {
pod: makePodWithGenericEphemeral("test-volume"),
cachePVCs: []*v1.PersistentVolumeClaim{conflictingGenericPVC},
pvs: []*v1.PersistentVolume{pvBoundGeneric},
ephemeral: true,
shouldFail: true,
},
"generic-ephemeral,disabled": {
pod: makePodWithGenericEphemeral("test-volume"),
cachePVCs: []*v1.PersistentVolumeClaim{correctGenericPVC},
pvs: []*v1.PersistentVolume{pvBoundGeneric},
ephemeral: false,
shouldFail: true,
},
}
testNode := &v1.Node{
@ -965,6 +1027,8 @@ func TestFindPodVolumesWithoutProvisioning(t *testing.T) {
}
run := func(t *testing.T, scenario scenarioType, csiStorageCapacity bool, csiDriver *storagev1.CSIDriver) {
defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.GenericEphemeralVolume, scenario.ephemeral)()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()