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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,167 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "reflect" | ||
| "strconv" | ||
| "testing" | ||
| "time" | ||
|
|
||
| v1 "k8s.io/api/core/v1" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/client-go/tools/cache" | ||
| ) | ||
|
|
||
| func TestCanEvict(t *testing.T) { | ||
| now := int(time.Now().Unix()) | ||
| specs := map[string]struct { | ||
| srcAnn map[string]string | ||
| expResult bool | ||
| }{ | ||
| "with timestamp after incubation period": { | ||
| srcAnn: map[string]string{ | ||
| "k-rail/tainted-timestamp": strconv.Itoa(now - 1), | ||
| "k-rail/tainted-reason": "test", | ||
| }, | ||
| expResult: true, | ||
| }, | ||
| "with timestamp in incubation period": { | ||
| srcAnn: map[string]string{ | ||
| "k-rail/tainted-timestamp": strconv.Itoa(now), | ||
| "k-rail/tainted-reason": "test", | ||
| }, | ||
| expResult: false, | ||
| }, | ||
| "without timestamp annotation": { | ||
| srcAnn: map[string]string{ | ||
| "k-rail/tainted-reason": "test", | ||
| }, | ||
| expResult: true, | ||
| }, | ||
| "with timestamp containing non timestamp string": { | ||
| srcAnn: map[string]string{ | ||
| "k-rail/tainted-timestamp": "", | ||
| "k-rail/tainted-reason": "test", | ||
| }, | ||
| expResult: true, | ||
| }, | ||
| "with preventEviction annotation": { | ||
| srcAnn: map[string]string{ | ||
| "k-rail/tainted-timestamp": strconv.Itoa(now - 1), | ||
| "k-rail/tainted-reason": "test", | ||
| "k-rail/tainted-prevent-eviction": "true", | ||
| }, | ||
| expResult: false, | ||
| }, | ||
| "with preventEviction annotation - uppercase": { | ||
| srcAnn: map[string]string{ | ||
| "k-rail/tainted-timestamp": strconv.Itoa(now - 1), | ||
| "k-rail/tainted-reason": "test", | ||
| "k-rail/tainted-prevent-eviction": "TRUE", | ||
| }, | ||
| expResult: false, | ||
| }, | ||
| "with preventEviction annotation - yes": { | ||
| srcAnn: map[string]string{ | ||
| "k-rail/tainted-timestamp": strconv.Itoa(now - 1), | ||
| "k-rail/tainted-reason": "test", | ||
| "k-rail/tainted-prevent-eviction": "yes", | ||
| }, | ||
| expResult: false, | ||
| }, | ||
| "with preventEviction annotation - non bool": { | ||
| srcAnn: map[string]string{ | ||
| "k-rail/tainted-timestamp": strconv.Itoa(now - 1), | ||
| "k-rail/tainted-reason": "test", | ||
| "k-rail/tainted-prevent-eviction": "", | ||
| }, | ||
| expResult: true, | ||
| }, | ||
| } | ||
| for msg, spec := range specs { | ||
| t.Run(msg, func(t *testing.T) { | ||
| pod := v1.Pod{ObjectMeta: metav1.ObjectMeta{Annotations: spec.srcAnn}} | ||
| if got := canEvict(&pod, time.Second); spec.expResult != got { | ||
| t.Errorf("expected %v but got %v", spec.expResult, got) | ||
| } | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| func TestEvictPod(t *testing.T) { | ||
| now := int(time.Now().Unix()) | ||
|
|
||
| specs := map[string]struct { | ||
| srcAnn map[string]string | ||
| expReason string | ||
| expMsg string | ||
| expNoEviction bool | ||
| }{ | ||
| "evicted with custom reason": { | ||
| srcAnn: map[string]string{ | ||
| "k-rail/tainted-timestamp": strconv.Itoa(now - 1), | ||
| "k-rail/tainted-reason": "test", | ||
| }, | ||
| expReason: "Tainted", | ||
| expMsg: "test", | ||
| }, | ||
| "evicted with default reason": { | ||
| srcAnn: map[string]string{ | ||
| "k-rail/tainted-timestamp": strconv.Itoa(now - 1), | ||
| }, | ||
| expReason: "Tainted", | ||
| expMsg: noEvictionNote, | ||
| }, | ||
| "not evicted with annotation": { | ||
| srcAnn: map[string]string{ | ||
| "k-rail/tainted-timestamp": strconv.Itoa(now - 1), | ||
| "k-rail/tainted-prevent-eviction": "yes", | ||
| }, | ||
| expNoEviction: true, | ||
| }, | ||
| } | ||
| for msg, spec := range specs { | ||
| t.Run(msg, func(t *testing.T) { | ||
| store := cache.NewStore(cache.MetaNamespaceKeyFunc) | ||
| pod := &v1.Pod{ObjectMeta: metav1.ObjectMeta{Name: "myPod", Annotations: spec.srcAnn}} | ||
| store.Add(pod) | ||
| prov := &recordingPodProvisioner{} | ||
| c := NewController(nil, store, nil, prov, 1) | ||
| // when | ||
| err := c.evictPod("myPod") | ||
| // then | ||
| if err != nil { | ||
| t.Fatalf("unexpected error: %+v", err) | ||
| } | ||
| if spec.expNoEviction { | ||
| if prov.evictedPods != nil { | ||
| t.Fatalf("expected no call but got %v", prov.evictedPods) | ||
| } | ||
| return | ||
| } | ||
| // there should be 1 call | ||
| if exp, got := []*v1.Pod{pod}, prov.evictedPods; !reflect.DeepEqual(exp, got) { | ||
| t.Errorf("expected %v but got %v", exp, got) | ||
| } | ||
| if exp, got := []string{spec.expReason}, prov.reasons; !reflect.DeepEqual(exp, got) { | ||
| t.Errorf("expected %v but got %v", exp, got) | ||
| } | ||
| if exp, got := []string{spec.expMsg}, prov.msgs; !reflect.DeepEqual(exp, got) { | ||
| t.Errorf("expected %v but got %v", exp, got) | ||
| } | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| type recordingPodProvisioner struct { | ||
| evictedPods []*v1.Pod | ||
| reasons []string | ||
| msgs []string | ||
| result error | ||
| } | ||
|
|
||
| func (r *recordingPodProvisioner) Evict(pod *v1.Pod, reason, msg string) error { | ||
| r.evictedPods = append(r.evictedPods, pod) | ||
| r.reasons = append(r.reasons, reason) | ||
| r.msgs = append(r.msgs, msg) | ||
| return r.result | ||
| } |
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