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TestPodEvictorReset: replace duplicates strategy with node taints to simplify the testing

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This commit is contained in:
Jan Chaloupka
2024-08-13 10:33:43 +02:00
parent 640b675e86
commit 29c0a90998
1 changed files with 23 additions and 31 deletions
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54
pkg/descheduler/descheduler_test.go
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@@ -15,10 +15,10 @@ import (
"k8s.io/client-go/informers"
fakeclientset "k8s.io/client-go/kubernetes/fake"
core "k8s.io/client-go/testing"
"k8s.io/klog/v2"
utilptr "k8s.io/utils/ptr"
"sigs.k8s.io/descheduler/cmd/descheduler/app/options"
"sigs.k8s.io/descheduler/pkg/api"
nodeutil "sigs.k8s.io/descheduler/pkg/descheduler/node"
"sigs.k8s.io/descheduler/pkg/framework/pluginregistry"
"sigs.k8s.io/descheduler/pkg/framework/plugins/defaultevictor"
"sigs.k8s.io/descheduler/pkg/framework/plugins/removeduplicates"
@@ -387,26 +387,22 @@ func TestPodEvictorReset(t *testing.T) {
initPluginRegistry()
ctx := context.Background()
node1 := test.BuildTestNode("n1", 2000, 3000, 10, nil)
node1 := test.BuildTestNode("n1", 2000, 3000, 10, taintNodeNoSchedule)
node2 := test.BuildTestNode("n2", 2000, 3000, 10, nil)
p1 := test.BuildTestPod("p1", 100, 0, node1.Name, nil)
p1.Namespace = "dev"
p2 := test.BuildTestPod("p2", 100, 0, node1.Name, nil)
p2.Namespace = "dev"
p3 := test.BuildTestPod("p3", 100, 0, node1.Name, nil)
p3.Namespace = "dev"
p4 := test.BuildTestPod("p4", 100, 0, node1.Name, nil)
p4.Namespace = "dev"
nodes := []*v1.Node{node1, node2}
ownerRef1 := test.GetReplicaSetOwnerRefList()
p1.ObjectMeta.OwnerReferences = ownerRef1
p2.ObjectMeta.OwnerReferences = ownerRef1
p3.ObjectMeta.OwnerReferences = ownerRef1
p4.ObjectMeta.OwnerReferences = ownerRef1
updatePod := func(pod *v1.Pod) {
pod.Namespace = "dev"
pod.ObjectMeta.OwnerReferences = ownerRef1
}
p1 := test.BuildTestPod("p1", 100, 0, node1.Name, updatePod)
p2 := test.BuildTestPod("p2", 100, 0, node1.Name, updatePod)
internalDeschedulerPolicy := removePodsViolatingNodeTaintsPolicy()
ctxCancel, cancel := context.WithCancel(ctx)
rs, descheduler, client := initDescheduler(t, ctxCancel, removeDuplicatesPolicy(), node1, node2, p1, p2, p3, p4)
rs, descheduler, client := initDescheduler(t, ctxCancel, internalDeschedulerPolicy, node1, node2, p1, p2)
defer cancel()
var evictedPods []string
@@ -417,14 +413,9 @@ func TestPodEvictorReset(t *testing.T) {
return podEvictionReactionTestingFnc(&fakeEvictedPods)
}
nodes, err := nodeutil.ReadyNodes(ctx, rs.Client, descheduler.nodeLister, "")
if err != nil {
t.Fatalf("Unable to get ready nodes: %v", err)
}
// a single pod eviction expected
err = descheduler.runDeschedulerLoop(ctx, nodes)
if err != nil {
klog.Infof("2 pod eviction expected per a descheduling cycle, 2 real evictions in total")
if err := descheduler.runDeschedulerLoop(ctx, nodes); err != nil {
t.Fatalf("Unable to run a descheduling loop: %v", err)
}
if descheduler.podEvictor.TotalEvicted() != 2 || len(evictedPods) != 2 || len(fakeEvictedPods) != 0 {
@@ -432,8 +423,8 @@ func TestPodEvictorReset(t *testing.T) {
}
// a single pod eviction expected
err = descheduler.runDeschedulerLoop(ctx, nodes)
if err != nil {
klog.Infof("2 pod eviction expected per a descheduling cycle, 4 real evictions in total")
if err := descheduler.runDeschedulerLoop(ctx, nodes); err != nil {
t.Fatalf("Unable to run a descheduling loop: %v", err)
}
if descheduler.podEvictor.TotalEvicted() != 2 || len(evictedPods) != 4 || len(fakeEvictedPods) != 0 {
@@ -441,19 +432,20 @@ func TestPodEvictorReset(t *testing.T) {
}
// check the fake client syncing and the right pods evicted
klog.Infof("Enabling the dry run mode")
rs.DryRun = true
evictedPods = []string{}
// a single pod eviction expected
err = descheduler.runDeschedulerLoop(ctx, nodes)
if err != nil {
klog.Infof("2 pod eviction expected per a descheduling cycle, 2 fake evictions in total")
if err := descheduler.runDeschedulerLoop(ctx, nodes); err != nil {
t.Fatalf("Unable to run a descheduling loop: %v", err)
}
if descheduler.podEvictor.TotalEvicted() != 2 || len(evictedPods) != 0 || len(fakeEvictedPods) != 2 {
t.Fatalf("Expected (2,0,2) pods evicted, got (%v, %v, %v) instead", descheduler.podEvictor.TotalEvicted(), len(evictedPods), len(fakeEvictedPods))
}
// a single pod eviction expected
err = descheduler.runDeschedulerLoop(ctx, nodes)
if err != nil {
klog.Infof("2 pod eviction expected per a descheduling cycle, 4 fake evictions in total")
if err := descheduler.runDeschedulerLoop(ctx, nodes); err != nil {
t.Fatalf("Unable to run a descheduling loop: %v", err)
}
if descheduler.podEvictor.TotalEvicted() != 2 || len(evictedPods) != 0 || len(fakeEvictedPods) != 4 {