Cluster-autoscaler: fast drain tests

cluster-autoscaler/simulator/drain_test.go

@@ -0,0 +1,97 @@
+/*
+Copyright 2016 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package simulator
+
+import (
+	"testing"
+
+	kube_api "k8s.io/kubernetes/pkg/api"
+	"k8s.io/kubernetes/pkg/kubelet/types"
+	"k8s.io/kubernetes/plugin/pkg/scheduler/schedulercache"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestFastGetPodsToMove(t *testing.T) {
+
+	// Unreplicated pod
+	pod1 := &kube_api.Pod{
+		ObjectMeta: kube_api.ObjectMeta{
+			Name:      "pod1",
+			Namespace: "ns",
+		},
+	}
+	_, err := FastGetPodsToMove(schedulercache.NewNodeInfo(pod1), false, true, kube_api.Codecs.UniversalDecoder())
+	assert.Error(t, err)
+
+	// Replicated pod
+	pod2 := &kube_api.Pod{
+		ObjectMeta: kube_api.ObjectMeta{
+			Name:      "pod2",
+			Namespace: "ns",
+			Annotations: map[string]string{
+				"kubernetes.io/created-by": "{\"kind\":\"SerializedReference\",\"apiVersion\":\"v1\",\"reference\":{\"kind\":\"ReplicaSet\"}}",
+			},
+		},
+	}
+	r2, err := FastGetPodsToMove(schedulercache.NewNodeInfo(pod2), false, true, kube_api.Codecs.UniversalDecoder())
+	assert.NoError(t, err)
+	assert.Equal(t, 1, len(r2))
+	assert.Equal(t, pod2, r2[0])
+
+	// Manifest pod
+	pod3 := &kube_api.Pod{
+		ObjectMeta: kube_api.ObjectMeta{
+			Name:      "pod3",
+			Namespace: "kube-system",
+			Annotations: map[string]string{
+				types.ConfigMirrorAnnotationKey: "something",
+			},
+		},
+	}
+	r3, err := FastGetPodsToMove(schedulercache.NewNodeInfo(pod3), false, true, kube_api.Codecs.UniversalDecoder())
+	assert.NoError(t, err)
+	assert.Equal(t, 0, len(r3))
+
+	// DeamonSet pod
+	pod4 := &kube_api.Pod{
+		ObjectMeta: kube_api.ObjectMeta{
+			Name:      "pod4",
+			Namespace: "ns",
+			Annotations: map[string]string{
+				"kubernetes.io/created-by": "{\"kind\":\"SerializedReference\",\"apiVersion\":\"v1\",\"reference\":{\"kind\":\"DaemonSet\"}}",
+			},
+		},
+	}
+	r4, err := FastGetPodsToMove(schedulercache.NewNodeInfo(pod2, pod3, pod4), false, true, kube_api.Codecs.UniversalDecoder())
+	assert.NoError(t, err)
+	assert.Equal(t, 1, len(r4))
+	assert.Equal(t, pod2, r4[0])
+
+	// Kube-system
+	pod5 := &kube_api.Pod{
+		ObjectMeta: kube_api.ObjectMeta{
+			Name:      "pod5",
+			Namespace: "kube-system",
+			Annotations: map[string]string{
+				"kubernetes.io/created-by": "{\"kind\":\"SerializedReference\",\"apiVersion\":\"v1\",\"reference\":{\"kind\":\"ReplicaSet\"}}",
+			},
+		},
+	}
+	_, err = FastGetPodsToMove(schedulercache.NewNodeInfo(pod5), false, true, kube_api.Codecs.UniversalDecoder())
+	assert.Error(t, err)
+}