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684 lines
25 KiB
Go
684 lines
25 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors.
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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 kubectl
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import (
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"fmt"
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"testing"
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"time"
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autoscalingv1 "k8s.io/api/autoscaling/v1"
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kerrors "k8s.io/apimachinery/pkg/api/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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api "k8s.io/apimachinery/pkg/apis/testapigroup/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/client-go/scale"
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fakescale "k8s.io/client-go/scale/fake"
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testcore "k8s.io/client-go/testing"
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)
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func TestReplicationControllerScaleRetry(t *testing.T) {
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verbsOnError := map[string]*kerrors.StatusError{
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"update": kerrors.NewConflict(api.Resource("Status"), "foo", nil),
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}
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scaleClientExpectedAction := []string{"get", "update", "get"}
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scaleClient := createFakeScaleClient("replicationcontrollers", "foo-v1", 2, verbsOnError)
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scaler := NewScaler(scaleClient)
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preconditions := ScalePrecondition{-1, ""}
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count := uint(3)
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name := "foo-v1"
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namespace := metav1.NamespaceDefault
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scaleFunc := ScaleCondition(scaler, &preconditions, namespace, name, count, nil, schema.GroupResource{Group: "", Resource: "replicationcontrollers"})
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pass, err := scaleFunc()
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if pass {
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t.Errorf("Expected an update failure to return pass = false, got pass = %v", pass)
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}
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if err != nil {
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t.Errorf("Did not expect an error on update conflict failure, got %v", err)
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}
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preconditions = ScalePrecondition{3, ""}
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scaleFunc = ScaleCondition(scaler, &preconditions, namespace, name, count, nil, schema.GroupResource{Group: "", Resource: "replicationcontrollers"})
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pass, err = scaleFunc()
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if err == nil {
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t.Errorf("Expected error on precondition failure")
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}
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actions := scaleClient.Actions()
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if len(actions) != len(scaleClientExpectedAction) {
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t.Errorf("unexpected actions: %v, expected %d actions got %d", actions, len(scaleClientExpectedAction), len(actions))
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}
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for i, verb := range scaleClientExpectedAction {
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if actions[i].GetVerb() != verb {
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t.Errorf("unexpected action: %+v, expected %s", actions[i].GetVerb(), verb)
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}
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}
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}
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func TestReplicationControllerScaleInvalid(t *testing.T) {
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verbsOnError := map[string]*kerrors.StatusError{
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"update": kerrors.NewInvalid(api.Kind("Status"), "foo", nil),
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}
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scaleClientExpectedAction := []string{"get", "update"}
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scaleClient := createFakeScaleClient("replicationcontrollers", "foo-v1", 1, verbsOnError)
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scaler := NewScaler(scaleClient)
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preconditions := ScalePrecondition{-1, ""}
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count := uint(3)
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name := "foo-v1"
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namespace := "default"
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scaleFunc := ScaleCondition(scaler, &preconditions, namespace, name, count, nil, schema.GroupResource{Group: "", Resource: "replicationcontrollers"})
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pass, err := scaleFunc()
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if pass {
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t.Errorf("Expected an update failure to return pass = false, got pass = %v", pass)
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}
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if err == nil {
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t.Errorf("Expected error on invalid update failure, got %v", err)
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}
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actions := scaleClient.Actions()
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if len(actions) != len(scaleClientExpectedAction) {
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t.Errorf("unexpected actions: %v, expected %d actions got %d", actions, len(scaleClientExpectedAction), len(actions))
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}
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for i, verb := range scaleClientExpectedAction {
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if actions[i].GetVerb() != verb {
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t.Errorf("unexpected action: %+v, expected %s", actions[i].GetVerb(), verb)
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}
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}
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}
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func TestReplicationControllerScale(t *testing.T) {
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scaleClientExpectedAction := []string{"get", "update"}
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scaleClient := createFakeScaleClient("replicationcontrollers", "foo-v1", 2, nil)
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scaler := NewScaler(scaleClient)
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preconditions := ScalePrecondition{-1, ""}
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count := uint(3)
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name := "foo-v1"
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err := scaler.Scale("default", name, count, &preconditions, nil, nil, schema.GroupResource{Group: "", Resource: "replicationcontrollers"})
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if err != nil {
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t.Fatalf("unexpected error occurred = %v while scaling the resource", err)
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}
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actions := scaleClient.Actions()
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if len(actions) != len(scaleClientExpectedAction) {
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t.Errorf("unexpected actions: %v, expected %d actions got %d", actions, len(scaleClientExpectedAction), len(actions))
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}
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for i, verb := range scaleClientExpectedAction {
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if actions[i].GetVerb() != verb {
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t.Errorf("unexpected action: %+v, expected %s", actions[i].GetVerb(), verb)
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}
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}
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}
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func TestReplicationControllerScaleFailsPreconditions(t *testing.T) {
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scaleClientExpectedAction := []string{"get"}
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scaleClient := createFakeScaleClient("replicationcontrollers", "foo", 10, nil)
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scaler := NewScaler(scaleClient)
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preconditions := ScalePrecondition{2, ""}
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count := uint(3)
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name := "foo"
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err := scaler.Scale("default", name, count, &preconditions, nil, nil, schema.GroupResource{Group: "", Resource: "replicationcontrollers"})
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if err == nil {
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t.Fatal("expected to get an error but none was returned")
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}
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actions := scaleClient.Actions()
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if len(actions) != len(scaleClientExpectedAction) {
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t.Errorf("unexpected actions: %v, expected %d actions got %d", actions, len(scaleClientExpectedAction), len(actions))
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}
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for i, verb := range scaleClientExpectedAction {
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if actions[i].GetVerb() != verb {
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t.Errorf("unexpected action: %+v, expected %s", actions[i].GetVerb(), verb)
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}
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}
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}
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func TestDeploymentScaleRetry(t *testing.T) {
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verbsOnError := map[string]*kerrors.StatusError{
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"update": kerrors.NewConflict(api.Resource("Status"), "foo", nil),
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}
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scaleClientExpectedAction := []string{"get", "update", "get"}
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scaleClient := createFakeScaleClient("deployments", "foo", 2, verbsOnError)
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scaler := NewScaler(scaleClient)
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preconditions := &ScalePrecondition{-1, ""}
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count := uint(3)
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name := "foo"
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namespace := "default"
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scaleFunc := ScaleCondition(scaler, preconditions, namespace, name, count, nil, schema.GroupResource{Group: "apps", Resource: "deployments"})
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pass, err := scaleFunc()
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if pass != false {
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t.Errorf("Expected an update failure to return pass = false, got pass = %v", pass)
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}
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if err != nil {
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t.Errorf("Did not expect an error on update failure, got %v", err)
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}
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preconditions = &ScalePrecondition{3, ""}
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scaleFunc = ScaleCondition(scaler, preconditions, namespace, name, count, nil, schema.GroupResource{Group: "apps", Resource: "deployments"})
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pass, err = scaleFunc()
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if err == nil {
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t.Error("Expected error on precondition failure")
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}
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actions := scaleClient.Actions()
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if len(actions) != len(scaleClientExpectedAction) {
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t.Errorf("unexpected actions: %v, expected %d actions got %d", actions, len(scaleClientExpectedAction), len(actions))
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}
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for i, verb := range scaleClientExpectedAction {
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if actions[i].GetVerb() != verb {
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t.Errorf("unexpected action: %+v, expected %s", actions[i].GetVerb(), verb)
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}
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}
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}
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func TestDeploymentScale(t *testing.T) {
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scaleClientExpectedAction := []string{"get", "update"}
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scaleClient := createFakeScaleClient("deployments", "foo", 2, nil)
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scaler := NewScaler(scaleClient)
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preconditions := ScalePrecondition{-1, ""}
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count := uint(3)
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name := "foo"
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err := scaler.Scale("default", name, count, &preconditions, nil, nil, schema.GroupResource{Group: "apps", Resource: "deployments"})
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if err != nil {
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t.Fatal(err)
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}
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actions := scaleClient.Actions()
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if len(actions) != len(scaleClientExpectedAction) {
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t.Errorf("unexpected actions: %v, expected %d actions got %d", actions, len(scaleClientExpectedAction), len(actions))
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}
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for i, verb := range scaleClientExpectedAction {
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if actions[i].GetVerb() != verb {
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t.Errorf("unexpected action: %+v, expected %s", actions[i].GetVerb(), verb)
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}
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}
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}
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func TestDeploymentScaleInvalid(t *testing.T) {
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scaleClientExpectedAction := []string{"get", "update"}
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verbsOnError := map[string]*kerrors.StatusError{
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"update": kerrors.NewInvalid(api.Kind("Status"), "foo", nil),
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}
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scaleClient := createFakeScaleClient("deployments", "foo", 2, verbsOnError)
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scaler := NewScaler(scaleClient)
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preconditions := ScalePrecondition{-1, ""}
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count := uint(3)
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name := "foo"
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namespace := "default"
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scaleFunc := ScaleCondition(scaler, &preconditions, namespace, name, count, nil, schema.GroupResource{Group: "apps", Resource: "deployments"})
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pass, err := scaleFunc()
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if pass {
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t.Errorf("Expected an update failure to return pass = false, got pass = %v", pass)
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}
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if err == nil {
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t.Errorf("Expected error on invalid update failure, got %v", err)
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}
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actions := scaleClient.Actions()
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if len(actions) != len(scaleClientExpectedAction) {
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t.Errorf("unexpected actions: %v, expected %d actions got %d", actions, len(scaleClientExpectedAction), len(actions))
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}
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for i, verb := range scaleClientExpectedAction {
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if actions[i].GetVerb() != verb {
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t.Errorf("unexpected action: %+v, expected %s", actions[i].GetVerb(), verb)
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}
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}
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}
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func TestDeploymentScaleFailsPreconditions(t *testing.T) {
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scaleClientExpectedAction := []string{"get"}
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scaleClient := createFakeScaleClient("deployments", "foo", 10, nil)
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scaler := NewScaler(scaleClient)
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preconditions := ScalePrecondition{2, ""}
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count := uint(3)
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name := "foo"
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err := scaler.Scale("default", name, count, &preconditions, nil, nil, schema.GroupResource{Group: "apps", Resource: "deployments"})
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if err == nil {
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t.Fatal("exptected to get an error but none was returned")
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}
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actions := scaleClient.Actions()
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if len(actions) != len(scaleClientExpectedAction) {
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t.Errorf("unexpected actions: %v, expected %d actions got %d", actions, len(scaleClientExpectedAction), len(actions))
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}
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for i, verb := range scaleClientExpectedAction {
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if actions[i].GetVerb() != verb {
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t.Errorf("unexpected action: %+v, expected %s", actions[i].GetVerb(), verb)
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}
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}
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}
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func TestStatefulSetScale(t *testing.T) {
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scaleClientExpectedAction := []string{"get", "update"}
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scaleClient := createFakeScaleClient("statefulsets", "foo", 2, nil)
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scaler := NewScaler(scaleClient)
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preconditions := ScalePrecondition{-1, ""}
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count := uint(3)
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name := "foo"
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err := scaler.Scale("default", name, count, &preconditions, nil, nil, schema.GroupResource{Group: "apps", Resource: "statefulset"})
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if err != nil {
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t.Fatal(err)
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}
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actions := scaleClient.Actions()
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if len(actions) != len(scaleClientExpectedAction) {
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t.Errorf("unexpected actions: %v, expected %d actions got %d", actions, len(scaleClientExpectedAction), len(actions))
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}
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for i, verb := range scaleClientExpectedAction {
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if actions[i].GetVerb() != verb {
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t.Errorf("unexpected action: %+v, expected %s", actions[i].GetVerb(), verb)
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}
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}
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}
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func TestStatefulSetScaleRetry(t *testing.T) {
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scaleClientExpectedAction := []string{"get", "update", "get"}
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verbsOnError := map[string]*kerrors.StatusError{
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"update": kerrors.NewConflict(api.Resource("Status"), "foo", nil),
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}
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scaleClient := createFakeScaleClient("statefulsets", "foo", 2, verbsOnError)
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scaler := NewScaler(scaleClient)
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preconditions := &ScalePrecondition{-1, ""}
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count := uint(3)
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name := "foo"
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namespace := "default"
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scaleFunc := ScaleCondition(scaler, preconditions, namespace, name, count, nil, schema.GroupResource{Group: "apps", Resource: "statefulsets"})
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pass, err := scaleFunc()
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if pass != false {
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t.Errorf("Expected an update failure to return pass = false, got pass = %v", pass)
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}
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if err != nil {
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t.Errorf("Did not expect an error on update failure, got %v", err)
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}
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preconditions = &ScalePrecondition{3, ""}
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scaleFunc = ScaleCondition(scaler, preconditions, namespace, name, count, nil, schema.GroupResource{Group: "apps", Resource: "statefulsets"})
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pass, err = scaleFunc()
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if err == nil {
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t.Error("Expected error on precondition failure")
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}
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actions := scaleClient.Actions()
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if len(actions) != len(scaleClientExpectedAction) {
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t.Errorf("unexpected actions: %v, expected %d actions got %d", actions, len(scaleClientExpectedAction), len(actions))
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}
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for i, verb := range scaleClientExpectedAction {
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if actions[i].GetVerb() != verb {
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t.Errorf("unexpected action: %+v, expected %s", actions[i].GetVerb(), verb)
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}
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}
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}
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func TestStatefulSetScaleInvalid(t *testing.T) {
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scaleClientExpectedAction := []string{"get", "update"}
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verbsOnError := map[string]*kerrors.StatusError{
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"update": kerrors.NewInvalid(api.Kind("Status"), "foo", nil),
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}
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scaleClient := createFakeScaleClient("statefulsets", "foo", 2, verbsOnError)
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scaler := NewScaler(scaleClient)
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preconditions := ScalePrecondition{-1, ""}
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count := uint(3)
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name := "foo"
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namespace := "default"
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scaleFunc := ScaleCondition(scaler, &preconditions, namespace, name, count, nil, schema.GroupResource{Group: "apps", Resource: "statefulsets"})
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pass, err := scaleFunc()
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if pass {
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t.Errorf("Expected an update failure to return pass = false, got pass = %v", pass)
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}
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if err == nil {
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t.Errorf("Expected error on invalid update failure, got %v", err)
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}
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actions := scaleClient.Actions()
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if len(actions) != len(scaleClientExpectedAction) {
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t.Errorf("unexpected actions: %v, expected %d actions got %d", actions, len(scaleClientExpectedAction), len(actions))
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}
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for i, verb := range scaleClientExpectedAction {
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if actions[i].GetVerb() != verb {
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t.Errorf("unexpected action: %+v, expected %s", actions[i].GetVerb(), verb)
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}
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}
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}
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func TestStatefulSetScaleFailsPreconditions(t *testing.T) {
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scaleClientExpectedAction := []string{"get"}
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scaleClient := createFakeScaleClient("statefulsets", "foo", 10, nil)
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scaler := NewScaler(scaleClient)
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preconditions := ScalePrecondition{2, ""}
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count := uint(3)
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name := "foo"
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err := scaler.Scale("default", name, count, &preconditions, nil, nil, schema.GroupResource{Group: "apps", Resource: "statefulsets"})
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if err == nil {
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t.Fatal("expected to get an error but none was returned")
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}
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actions := scaleClient.Actions()
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if len(actions) != len(scaleClientExpectedAction) {
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t.Errorf("unexpected actions: %v, expected %d actions got %d", actions, len(scaleClientExpectedAction), len(actions))
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}
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for i, verb := range scaleClientExpectedAction {
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if actions[i].GetVerb() != verb {
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t.Errorf("unexpected action: %+v, expected %s", actions[i].GetVerb(), verb)
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}
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}
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}
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func TestReplicaSetScale(t *testing.T) {
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scaleClientExpectedAction := []string{"get", "update"}
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scaleClient := createFakeScaleClient("replicasets", "foo", 10, nil)
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scaler := NewScaler(scaleClient)
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preconditions := ScalePrecondition{-1, ""}
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count := uint(3)
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name := "foo"
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err := scaler.Scale("default", name, count, &preconditions, nil, nil, schema.GroupResource{Group: "extensions", Resource: "replicasets"})
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if err != nil {
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t.Fatal(err)
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}
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actions := scaleClient.Actions()
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if len(actions) != len(scaleClientExpectedAction) {
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t.Errorf("unexpected actions: %v, expected %d actions got %d", actions, len(scaleClientExpectedAction), len(actions))
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}
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for i, verb := range scaleClientExpectedAction {
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if actions[i].GetVerb() != verb {
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t.Errorf("unexpected action: %+v, expected %s", actions[i].GetVerb(), verb)
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}
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}
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}
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func TestReplicaSetScaleRetry(t *testing.T) {
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verbsOnError := map[string]*kerrors.StatusError{
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"update": kerrors.NewConflict(api.Resource("Status"), "foo", nil),
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}
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scaleClientExpectedAction := []string{"get", "update", "get"}
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scaleClient := createFakeScaleClient("replicasets", "foo", 2, verbsOnError)
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scaler := NewScaler(scaleClient)
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preconditions := &ScalePrecondition{-1, ""}
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count := uint(3)
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name := "foo"
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namespace := "default"
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scaleFunc := ScaleCondition(scaler, preconditions, namespace, name, count, nil, schema.GroupResource{Group: "extensions", Resource: "replicasets"})
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pass, err := scaleFunc()
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if pass != false {
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t.Errorf("Expected an update failure to return pass = false, got pass = %v", pass)
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}
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if err != nil {
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t.Errorf("Did not expect an error on update failure, got %v", err)
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}
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preconditions = &ScalePrecondition{3, ""}
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scaleFunc = ScaleCondition(scaler, preconditions, namespace, name, count, nil, schema.GroupResource{Group: "extensions", Resource: "replicasets"})
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pass, err = scaleFunc()
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if err == nil {
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t.Error("Expected error on precondition failure")
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}
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actions := scaleClient.Actions()
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if len(actions) != len(scaleClientExpectedAction) {
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t.Errorf("unexpected actions: %v, expected %d actions got %d", actions, len(scaleClientExpectedAction), len(actions))
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}
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for i, verb := range scaleClientExpectedAction {
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if actions[i].GetVerb() != verb {
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t.Errorf("unexpected action: %+v, expected %s", actions[i].GetVerb(), verb)
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}
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}
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}
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func TestReplicaSetScaleInvalid(t *testing.T) {
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verbsOnError := map[string]*kerrors.StatusError{
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"update": kerrors.NewInvalid(api.Kind("Status"), "foo", nil),
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}
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scaleClientExpectedAction := []string{"get", "update"}
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scaleClient := createFakeScaleClient("replicasets", "foo", 2, verbsOnError)
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scaler := NewScaler(scaleClient)
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preconditions := ScalePrecondition{-1, ""}
|
|
count := uint(3)
|
|
name := "foo"
|
|
namespace := "default"
|
|
|
|
scaleFunc := ScaleCondition(scaler, &preconditions, namespace, name, count, nil, schema.GroupResource{Group: "extensions", Resource: "replicasets"})
|
|
pass, err := scaleFunc()
|
|
if pass {
|
|
t.Errorf("Expected an update failure to return pass = false, got pass = %v", pass)
|
|
}
|
|
if err == nil {
|
|
t.Errorf("Expected error on invalid update failure, got %v", err)
|
|
}
|
|
actions := scaleClient.Actions()
|
|
if len(actions) != len(scaleClientExpectedAction) {
|
|
t.Errorf("unexpected actions: %v, expected %d actions got %d", actions, len(scaleClientExpectedAction), len(actions))
|
|
}
|
|
for i, verb := range scaleClientExpectedAction {
|
|
if actions[i].GetVerb() != verb {
|
|
t.Errorf("unexpected action: %+v, expected %s", actions[i].GetVerb(), verb)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestReplicaSetsGetterFailsPreconditions(t *testing.T) {
|
|
scaleClientExpectedAction := []string{"get"}
|
|
scaleClient := createFakeScaleClient("replicasets", "foo", 10, nil)
|
|
scaler := NewScaler(scaleClient)
|
|
preconditions := ScalePrecondition{2, ""}
|
|
count := uint(3)
|
|
name := "foo"
|
|
err := scaler.Scale("default", name, count, &preconditions, nil, nil, schema.GroupResource{Group: "extensions", Resource: "replicasets"})
|
|
if err == nil {
|
|
t.Fatal("expected to get an error but non was returned")
|
|
}
|
|
actions := scaleClient.Actions()
|
|
if len(actions) != len(scaleClientExpectedAction) {
|
|
t.Errorf("unexpected actions: %v, expected %d actions got %d", actions, len(scaleClientExpectedAction), len(actions))
|
|
}
|
|
for i, verb := range scaleClientExpectedAction {
|
|
if actions[i].GetVerb() != verb {
|
|
t.Errorf("unexpected action: %+v, expected %s", actions[i].GetVerb(), verb)
|
|
}
|
|
}
|
|
}
|
|
|
|
// TestGenericScaleSimple exercises GenericScaler.ScaleSimple method
|
|
func TestGenericScaleSimple(t *testing.T) {
|
|
// test data
|
|
scaleClient := createFakeScaleClient("deployments", "abc", 10, nil)
|
|
|
|
// test scenarios
|
|
scenarios := []struct {
|
|
name string
|
|
precondition ScalePrecondition
|
|
newSize int
|
|
targetGR schema.GroupResource
|
|
resName string
|
|
scaleGetter scale.ScalesGetter
|
|
expectError bool
|
|
}{
|
|
// scenario 1: scale up the "abc" deployment
|
|
{
|
|
name: "scale up the \"abc\" deployment",
|
|
precondition: ScalePrecondition{10, ""},
|
|
newSize: 20,
|
|
targetGR: schema.GroupResource{Group: "apps", Resource: "deployments"},
|
|
resName: "abc",
|
|
scaleGetter: scaleClient,
|
|
},
|
|
// scenario 2: scale down the "abc" deployment
|
|
{
|
|
name: "scale down the \"abs\" deployment",
|
|
precondition: ScalePrecondition{20, ""},
|
|
newSize: 5,
|
|
targetGR: schema.GroupResource{Group: "apps", Resource: "deployments"},
|
|
resName: "abc",
|
|
scaleGetter: scaleClient,
|
|
},
|
|
// scenario 3: precondition error, expected size is 1,
|
|
// note that the previous scenario (2) set the size to 5
|
|
{
|
|
name: "precondition error, expected size is 1",
|
|
precondition: ScalePrecondition{1, ""},
|
|
newSize: 5,
|
|
targetGR: schema.GroupResource{Group: "apps", Resource: "deployments"},
|
|
resName: "abc",
|
|
scaleGetter: scaleClient,
|
|
expectError: true,
|
|
},
|
|
// scenario 4: precondition is not validated when the precondition size is set to -1
|
|
{
|
|
name: "precondition is not validated when the size is set to -1",
|
|
precondition: ScalePrecondition{-1, ""},
|
|
newSize: 5,
|
|
targetGR: schema.GroupResource{Group: "apps", Resource: "deployments"},
|
|
resName: "abc",
|
|
scaleGetter: scaleClient,
|
|
},
|
|
// scenario 5: precondition error, resource version mismatch
|
|
{
|
|
name: "precondition error, resource version mismatch",
|
|
precondition: ScalePrecondition{5, "v1"},
|
|
newSize: 5,
|
|
targetGR: schema.GroupResource{Group: "apps", Resource: "deployments"},
|
|
resName: "abc",
|
|
scaleGetter: scaleClient,
|
|
expectError: true,
|
|
},
|
|
}
|
|
|
|
// act
|
|
for index, scenario := range scenarios {
|
|
t.Run(fmt.Sprintf("running scenario %d: %s", index+1, scenario.name), func(t *testing.T) {
|
|
target := NewScaler(scenario.scaleGetter)
|
|
|
|
resVersion, err := target.ScaleSimple("default", scenario.resName, &scenario.precondition, uint(scenario.newSize), scenario.targetGR)
|
|
|
|
if scenario.expectError && err == nil {
|
|
t.Fatal("expected an error but was not returned")
|
|
}
|
|
if !scenario.expectError && err != nil {
|
|
t.Fatalf("unexpected error: %v", err)
|
|
}
|
|
if resVersion != "" {
|
|
t.Fatalf("unexpected resource version returned = %s, wanted = %s", resVersion, "")
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
// TestGenericScale exercises GenericScaler.Scale method
|
|
func TestGenericScale(t *testing.T) {
|
|
// test data
|
|
scaleClient := createFakeScaleClient("deployments", "abc", 10, nil)
|
|
|
|
// test scenarios
|
|
scenarios := []struct {
|
|
name string
|
|
precondition ScalePrecondition
|
|
newSize int
|
|
targetGR schema.GroupResource
|
|
resName string
|
|
scaleGetter scale.ScalesGetter
|
|
waitForReplicas *RetryParams
|
|
expectError bool
|
|
}{
|
|
// scenario 1: scale up the "abc" deployment
|
|
{
|
|
name: "scale up the \"abc\" deployment",
|
|
precondition: ScalePrecondition{10, ""},
|
|
newSize: 20,
|
|
targetGR: schema.GroupResource{Group: "apps", Resource: "deployments"},
|
|
resName: "abc",
|
|
scaleGetter: scaleClient,
|
|
},
|
|
//scenario 2: a resource name cannot be empty
|
|
{
|
|
name: "a resource name cannot be empty",
|
|
precondition: ScalePrecondition{10, ""},
|
|
newSize: 20,
|
|
targetGR: schema.GroupResource{Group: "apps", Resource: "deployments"},
|
|
resName: "",
|
|
scaleGetter: scaleClient,
|
|
expectError: true,
|
|
},
|
|
// scenario 3: wait for replicas error due to status.Replicas != spec.Replicas
|
|
{
|
|
name: "wait for replicas error due to status.Replicas != spec.Replicas",
|
|
precondition: ScalePrecondition{10, ""},
|
|
newSize: 20,
|
|
targetGR: schema.GroupResource{Group: "apps", Resource: "deployments"},
|
|
resName: "abc",
|
|
scaleGetter: scaleClient,
|
|
waitForReplicas: &RetryParams{time.Duration(5 * time.Second), time.Duration(5 * time.Second)},
|
|
expectError: true,
|
|
},
|
|
}
|
|
|
|
// act
|
|
for _, scenario := range scenarios {
|
|
t.Run(scenario.name, func(t *testing.T) {
|
|
target := NewScaler(scenario.scaleGetter)
|
|
|
|
err := target.Scale("default", scenario.resName, uint(scenario.newSize), &scenario.precondition, nil, scenario.waitForReplicas, scenario.targetGR)
|
|
|
|
if scenario.expectError && err == nil {
|
|
t.Fatal("expected an error but was not returned")
|
|
}
|
|
if !scenario.expectError && err != nil {
|
|
t.Fatalf("unexpected error: %v", err)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func createFakeScaleClient(resource string, resourceName string, replicas int, errorsOnVerb map[string]*kerrors.StatusError) *fakescale.FakeScaleClient {
|
|
shouldReturnAnError := func(verb string) (*kerrors.StatusError, bool) {
|
|
if anError, anErrorExists := errorsOnVerb[verb]; anErrorExists {
|
|
return anError, true
|
|
}
|
|
return &kerrors.StatusError{}, false
|
|
}
|
|
newReplicas := int32(replicas)
|
|
scaleClient := &fakescale.FakeScaleClient{}
|
|
scaleClient.AddReactor("get", resource, func(rawAction testcore.Action) (handled bool, ret runtime.Object, err error) {
|
|
action := rawAction.(testcore.GetAction)
|
|
if action.GetName() != resourceName {
|
|
return true, nil, fmt.Errorf("expected = %s, got = %s", resourceName, action.GetName())
|
|
}
|
|
if anError, should := shouldReturnAnError("get"); should {
|
|
return true, nil, anError
|
|
}
|
|
obj := &autoscalingv1.Scale{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: action.GetName(),
|
|
Namespace: action.GetNamespace(),
|
|
},
|
|
Spec: autoscalingv1.ScaleSpec{
|
|
Replicas: newReplicas,
|
|
},
|
|
}
|
|
return true, obj, nil
|
|
})
|
|
scaleClient.AddReactor("update", resource, func(rawAction testcore.Action) (handled bool, ret runtime.Object, err error) {
|
|
action := rawAction.(testcore.UpdateAction)
|
|
obj := action.GetObject().(*autoscalingv1.Scale)
|
|
if obj.Name != resourceName {
|
|
return true, nil, fmt.Errorf("expected = %s, got = %s", resourceName, obj.Name)
|
|
}
|
|
if anError, should := shouldReturnAnError("update"); should {
|
|
return true, nil, anError
|
|
}
|
|
newReplicas = obj.Spec.Replicas
|
|
return true, &autoscalingv1.Scale{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: obj.Name,
|
|
Namespace: action.GetNamespace(),
|
|
},
|
|
Spec: autoscalingv1.ScaleSpec{
|
|
Replicas: newReplicas,
|
|
},
|
|
}, nil
|
|
})
|
|
return scaleClient
|
|
}
|