289 lines
13 KiB
Go
289 lines
13 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package persistentvolume
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import (
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"testing"
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"k8s.io/kubernetes/pkg/api"
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)
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// Test single call to syncClaim and syncVolume methods.
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// 1. Fill in the controller with initial data
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// 2. Call the tested function (syncClaim/syncVolume) via
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// controllerTest.testCall *once*.
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// 3. Compare resulting volumes and claims with expected volumes and claims.
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func TestSync(t *testing.T) {
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tests := []controllerTest{
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// [Unit test set 1] User did not care which PV they get.
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// Test the matching with no claim.Spec.VolumeName and with various
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// volumes.
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{
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// syncClaim binds to a matching unbound volume.
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"1-1 - successful bind",
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newVolumeArray("volume1-1", "1Gi", "", "", api.VolumePending),
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newVolumeArray("volume1-1", "1Gi", "uid1-1", "claim1-1", api.VolumeBound, annBoundByController),
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newClaimArray("claim1-1", "uid1-1", "1Gi", "", api.ClaimPending),
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newClaimArray("claim1-1", "uid1-1", "1Gi", "volume1-1", api.ClaimBound, annBoundByController, annBindCompleted),
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testSyncClaim,
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},
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{
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// syncClaim does not do anything when there is no matching volume.
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"1-2 - noop",
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newVolumeArray("volume1-2", "1Gi", "", "", api.VolumePending),
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newVolumeArray("volume1-2", "1Gi", "", "", api.VolumePending),
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newClaimArray("claim1-2", "uid1-2", "10Gi", "", api.ClaimPending),
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newClaimArray("claim1-2", "uid1-2", "10Gi", "", api.ClaimPending),
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testSyncClaim,
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},
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{
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// syncClaim resets claim.Status to Pending when there is no
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// matching volume.
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"1-3 - reset to Pending",
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newVolumeArray("volume1-3", "1Gi", "", "", api.VolumePending),
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newVolumeArray("volume1-3", "1Gi", "", "", api.VolumePending),
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newClaimArray("claim1-3", "uid1-3", "10Gi", "", api.ClaimBound),
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newClaimArray("claim1-3", "uid1-3", "10Gi", "", api.ClaimPending),
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testSyncClaim,
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},
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{
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// syncClaim binds claims to the smallest matching volume
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"1-4 - smallest volume",
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[]*api.PersistentVolume{
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newVolume("volume1-4_1", "10Gi", "", "", api.VolumePending),
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newVolume("volume1-4_2", "1Gi", "", "", api.VolumePending),
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},
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[]*api.PersistentVolume{
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newVolume("volume1-4_1", "10Gi", "", "", api.VolumePending),
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newVolume("volume1-4_2", "1Gi", "uid1-4", "claim1-4", api.VolumeBound, annBoundByController),
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},
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newClaimArray("claim1-4", "uid1-4", "1Gi", "", api.ClaimPending),
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newClaimArray("claim1-4", "uid1-4", "1Gi", "volume1-4_2", api.ClaimBound, annBoundByController, annBindCompleted),
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testSyncClaim,
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},
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{
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// syncClaim binds a claim only to volume that points to it (by
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// name), even though a smaller one is available.
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"1-5 - prebound volume by name - success",
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[]*api.PersistentVolume{
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newVolume("volume1-5_1", "10Gi", "", "claim1-5", api.VolumePending),
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newVolume("volume1-5_2", "1Gi", "", "", api.VolumePending),
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},
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[]*api.PersistentVolume{
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newVolume("volume1-5_1", "10Gi", "uid1-5", "claim1-5", api.VolumeBound),
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newVolume("volume1-5_2", "1Gi", "", "", api.VolumePending),
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},
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newClaimArray("claim1-5", "uid1-5", "1Gi", "", api.ClaimPending),
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newClaimArray("claim1-5", "uid1-5", "1Gi", "volume1-5_1", api.ClaimBound, annBoundByController, annBindCompleted),
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testSyncClaim,
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},
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{
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// syncClaim binds a claim only to volume that points to it (by
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// UID), even though a smaller one is available.
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"1-6 - prebound volume by UID - success",
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[]*api.PersistentVolume{
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newVolume("volume1-6_1", "10Gi", "uid1-6", "claim1-6", api.VolumePending),
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newVolume("volume1-6_2", "1Gi", "", "", api.VolumePending),
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},
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[]*api.PersistentVolume{
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newVolume("volume1-6_1", "10Gi", "uid1-6", "claim1-6", api.VolumeBound),
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newVolume("volume1-6_2", "1Gi", "", "", api.VolumePending),
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},
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newClaimArray("claim1-6", "uid1-6", "1Gi", "", api.ClaimPending),
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newClaimArray("claim1-6", "uid1-6", "1Gi", "volume1-6_1", api.ClaimBound, annBoundByController, annBindCompleted),
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testSyncClaim,
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},
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{
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// syncClaim does not bind claim to a volume prebound to a claim with
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// same name and different UID
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"1-7 - prebound volume to different claim",
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newVolumeArray("volume1-7", "10Gi", "uid1-777", "claim1-7", api.VolumePending),
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newVolumeArray("volume1-7", "10Gi", "uid1-777", "claim1-7", api.VolumePending),
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newClaimArray("claim1-7", "uid1-7", "1Gi", "", api.ClaimPending),
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newClaimArray("claim1-7", "uid1-7", "1Gi", "", api.ClaimPending),
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testSyncClaim,
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},
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{
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// syncClaim completes binding - simulates controller crash after
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// PV.ClaimRef is saved
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"1-8 - complete bind after crash - PV bound",
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newVolumeArray("volume1-8", "1Gi", "uid1-8", "claim1-8", api.VolumePending, annBoundByController),
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newVolumeArray("volume1-8", "1Gi", "uid1-8", "claim1-8", api.VolumeBound, annBoundByController),
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newClaimArray("claim1-8", "uid1-8", "1Gi", "", api.ClaimPending),
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newClaimArray("claim1-8", "uid1-8", "1Gi", "volume1-8", api.ClaimBound, annBoundByController, annBindCompleted),
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testSyncClaim,
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},
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{
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// syncClaim completes binding - simulates controller crash after
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// PV.Status is saved
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"1-9 - complete bind after crash - PV status saved",
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newVolumeArray("volume1-9", "1Gi", "uid1-9", "claim1-9", api.VolumeBound, annBoundByController),
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newVolumeArray("volume1-9", "1Gi", "uid1-9", "claim1-9", api.VolumeBound, annBoundByController),
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newClaimArray("claim1-9", "uid1-9", "1Gi", "", api.ClaimPending),
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newClaimArray("claim1-9", "uid1-9", "1Gi", "volume1-9", api.ClaimBound, annBoundByController, annBindCompleted),
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testSyncClaim,
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},
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{
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// syncClaim completes binding - simulates controller crash after
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// PVC.VolumeName is saved
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"10 - complete bind after crash - PVC bound",
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newVolumeArray("volume1-10", "1Gi", "uid1-10", "claim1-10", api.VolumeBound, annBoundByController),
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newVolumeArray("volume1-10", "1Gi", "uid1-10", "claim1-10", api.VolumeBound, annBoundByController),
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newClaimArray("claim1-10", "uid1-10", "1Gi", "volume1-10", api.ClaimPending, annBoundByController, annBindCompleted),
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newClaimArray("claim1-10", "uid1-10", "1Gi", "volume1-10", api.ClaimBound, annBoundByController, annBindCompleted),
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testSyncClaim,
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},
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// [Unit test set 2] User asked for a specific PV.
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// Test the binding when pv.ClaimRef is already set by controller or
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// by user.
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{
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// syncClaim with claim pre-bound to a PV that does not exist
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"2-1 - claim prebound to non-existing volume - noop",
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novolumes,
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novolumes,
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newClaimArray("claim2-1", "uid2-1", "10Gi", "volume2-1", api.ClaimPending),
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newClaimArray("claim2-1", "uid2-1", "10Gi", "volume2-1", api.ClaimPending),
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testSyncClaim,
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},
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{
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// syncClaim with claim pre-bound to a PV that does not exist.
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// Check that the claim status is reset to Pending
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"2-2 - claim prebound to non-existing volume - reset status",
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novolumes,
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novolumes,
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newClaimArray("claim2-2", "uid2-2", "10Gi", "volume2-2", api.ClaimBound),
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newClaimArray("claim2-2", "uid2-2", "10Gi", "volume2-2", api.ClaimPending),
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testSyncClaim,
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},
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{
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// syncClaim with claim pre-bound to a PV that exists and is
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// unbound. Check it gets bound and no annBoundByController is set.
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"2-3 - claim prebound to unbound volume",
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newVolumeArray("volume2-3", "1Gi", "", "", api.VolumePending),
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newVolumeArray("volume2-3", "1Gi", "uid2-3", "claim2-3", api.VolumeBound, annBoundByController),
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newClaimArray("claim2-3", "uid2-3", "10Gi", "volume2-3", api.ClaimPending),
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newClaimArray("claim2-3", "uid2-3", "10Gi", "volume2-3", api.ClaimBound, annBindCompleted),
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testSyncClaim,
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},
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{
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// claim with claim pre-bound to a PV that is pre-bound to the claim
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// by name. Check it gets bound and no annBoundByController is set.
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"2-4 - claim prebound to prebound volume by name",
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newVolumeArray("volume2-4", "1Gi", "", "claim2-4", api.VolumePending),
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newVolumeArray("volume2-4", "1Gi", "uid2-4", "claim2-4", api.VolumeBound),
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newClaimArray("claim2-4", "uid2-4", "10Gi", "volume2-4", api.ClaimPending),
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newClaimArray("claim2-4", "uid2-4", "10Gi", "volume2-4", api.ClaimBound, annBindCompleted),
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testSyncClaim,
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},
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{
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// syncClaim with claim pre-bound to a PV that is pre-bound to the
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// claim by UID. Check it gets bound and no annBoundByController is
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// set.
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"2-5 - claim prebound to prebound volume by UID",
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newVolumeArray("volume2-5", "1Gi", "uid2-5", "claim2-5", api.VolumePending),
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newVolumeArray("volume2-5", "1Gi", "uid2-5", "claim2-5", api.VolumeBound),
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newClaimArray("claim2-5", "uid2-5", "10Gi", "volume2-5", api.ClaimPending),
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newClaimArray("claim2-5", "uid2-5", "10Gi", "volume2-5", api.ClaimBound, annBindCompleted),
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testSyncClaim,
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},
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{
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// syncClaim with claim pre-bound to a PV that is bound to different
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// claim. Check it's reset to Pending.
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"2-6 - claim prebound to already bound volume",
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newVolumeArray("volume2-6", "1Gi", "uid2-6_1", "claim2-6_1", api.VolumeBound),
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newVolumeArray("volume2-6", "1Gi", "uid2-6_1", "claim2-6_1", api.VolumeBound),
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newClaimArray("claim2-6", "uid2-6", "10Gi", "volume2-6", api.ClaimBound),
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newClaimArray("claim2-6", "uid2-6", "10Gi", "volume2-6", api.ClaimPending),
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testSyncClaim,
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},
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{
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// syncClaim with claim bound by controller to a PV that is bound to
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// different claim. Check it throws an error.
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"2-7 - claim bound by controller to already bound volume",
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newVolumeArray("volume2-7", "1Gi", "uid2-7_1", "claim2-7_1", api.VolumeBound),
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newVolumeArray("volume2-7", "1Gi", "uid2-7_1", "claim2-7_1", api.VolumeBound),
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newClaimArray("claim2-7", "uid2-7", "10Gi", "volume2-7", api.ClaimBound, annBoundByController),
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newClaimArray("claim2-7", "uid2-7", "10Gi", "volume2-7", api.ClaimBound, annBoundByController),
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testSyncClaimError,
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},
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// [Unit test set 3] Syncing bound claim
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{
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// syncClaim with claim bound and its claim.Spec.VolumeName is
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// removed. Check it's marked as Lost.
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"3-1 - bound claim with missing VolumeName",
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novolumes,
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novolumes,
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newClaimArray("claim3-1", "uid3-1", "10Gi", "", api.ClaimBound, annBoundByController, annBindCompleted),
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newClaimArray("claim3-1", "uid3-1", "10Gi", "", api.ClaimLost, annBoundByController, annBindCompleted),
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testSyncClaim,
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},
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{
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// syncClaim with claim bound to non-exising volume. Check it's
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// marked as Lost.
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"3-2 - bound claim with missing volume",
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novolumes,
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novolumes,
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newClaimArray("claim3-2", "uid3-2", "10Gi", "volume3-2", api.ClaimBound, annBoundByController, annBindCompleted),
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newClaimArray("claim3-2", "uid3-2", "10Gi", "volume3-2", api.ClaimLost, annBoundByController, annBindCompleted),
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testSyncClaim,
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},
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{
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// syncClaim with claim bound to unbound volume. Check it's bound.
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// Also check that Pending phase is set to Bound
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"3-3 - bound claim with unbound volume",
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newVolumeArray("volume3-3", "10Gi", "", "", api.VolumePending),
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newVolumeArray("volume3-3", "10Gi", "uid3-3", "claim3-3", api.VolumeBound, annBoundByController),
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newClaimArray("claim3-3", "uid3-3", "10Gi", "volume3-3", api.ClaimPending, annBoundByController, annBindCompleted),
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newClaimArray("claim3-3", "uid3-3", "10Gi", "volume3-3", api.ClaimBound, annBoundByController, annBindCompleted),
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testSyncClaim,
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},
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{
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// syncClaim with claim bound to volume with missing (or different)
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// volume.Spec.ClaimRef.UID. Check that the claim is marked as lost.
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"3-4 - bound claim with prebound volume",
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newVolumeArray("volume3-4", "10Gi", "claim3-4-x", "claim3-4", api.VolumePending),
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newVolumeArray("volume3-4", "10Gi", "claim3-4-x", "claim3-4", api.VolumePending),
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newClaimArray("claim3-4", "uid3-4", "10Gi", "volume3-4", api.ClaimPending, annBoundByController, annBindCompleted),
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newClaimArray("claim3-4", "uid3-4", "10Gi", "volume3-4", api.ClaimLost, annBoundByController, annBindCompleted),
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testSyncClaim,
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},
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{
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// syncClaim with claim bound to bound volume. Check that the
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// controller does not do anything. Also check that Pending phase is
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// set to Bound
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"3-5 - bound claim with bound volume",
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newVolumeArray("volume3-5", "10Gi", "uid3-5", "claim3-5", api.VolumePending),
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newVolumeArray("volume3-5", "10Gi", "uid3-5", "claim3-5", api.VolumeBound),
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newClaimArray("claim3-5", "uid3-5", "10Gi", "volume3-5", api.ClaimPending, annBindCompleted),
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newClaimArray("claim3-5", "uid3-5", "10Gi", "volume3-5", api.ClaimBound, annBindCompleted),
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testSyncClaim,
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},
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{
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// syncClaim with claim bound to a volume that is bound to different
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// claim. Check that the claim is marked as lost.
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// TODO: test that an event is emitted
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"3-6 - bound claim with bound volume",
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newVolumeArray("volume3-6", "10Gi", "uid3-6-x", "claim3-6-x", api.VolumePending),
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newVolumeArray("volume3-6", "10Gi", "uid3-6-x", "claim3-6-x", api.VolumePending),
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newClaimArray("claim3-6", "uid3-6", "10Gi", "volume3-6", api.ClaimPending, annBindCompleted),
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newClaimArray("claim3-6", "uid3-6", "10Gi", "volume3-6", api.ClaimLost, annBindCompleted),
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testSyncClaim,
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},
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}
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runSyncTests(t, tests)
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}
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