kubernetes defaults_test 源码

2022-09-18
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kubernetes defaults_test 代码

文件路径：/pkg/apis/apps/v1beta2/defaults_test.go

/*
Copyright 2017 The Kubernetes Authors.

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 v1beta2_test

import (
	"reflect"
	"testing"

	appsv1beta2 "k8s.io/api/apps/v1beta2"
	v1 "k8s.io/api/core/v1"
	apiequality "k8s.io/apimachinery/pkg/api/equality"
	"k8s.io/apimachinery/pkg/api/resource"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/apimachinery/pkg/util/intstr"
	utilfeature "k8s.io/apiserver/pkg/util/feature"
	featuregatetesting "k8s.io/component-base/featuregate/testing"
	"k8s.io/kubernetes/pkg/api/legacyscheme"
	_ "k8s.io/kubernetes/pkg/apis/apps/install"
	. "k8s.io/kubernetes/pkg/apis/apps/v1beta2"
	_ "k8s.io/kubernetes/pkg/apis/core/install"
	"k8s.io/kubernetes/pkg/features"
	utilpointer "k8s.io/utils/pointer"
)

func TestSetDefaultDaemonSetSpec(t *testing.T) {
	defaultLabels := map[string]string{"foo": "bar"}
	maxUnavailable := intstr.FromInt(1)
	maxSurge := intstr.FromInt(0)
	period := int64(v1.DefaultTerminationGracePeriodSeconds)
	defaultTemplate := v1.PodTemplateSpec{
		Spec: v1.PodSpec{
			DNSPolicy:                     v1.DNSClusterFirst,
			RestartPolicy:                 v1.RestartPolicyAlways,
			SecurityContext:               &v1.PodSecurityContext{},
			TerminationGracePeriodSeconds: &period,
			SchedulerName:                 v1.DefaultSchedulerName,
		},
		ObjectMeta: metav1.ObjectMeta{
			Labels: defaultLabels,
		},
	}
	templateNoLabel := v1.PodTemplateSpec{
		Spec: v1.PodSpec{
			DNSPolicy:                     v1.DNSClusterFirst,
			RestartPolicy:                 v1.RestartPolicyAlways,
			SecurityContext:               &v1.PodSecurityContext{},
			TerminationGracePeriodSeconds: &period,
			SchedulerName:                 v1.DefaultSchedulerName,
		},
	}
	tests := []struct {
		original *appsv1beta2.DaemonSet
		expected *appsv1beta2.DaemonSet
	}{
		{ // Labels change/defaulting test.
			original: &appsv1beta2.DaemonSet{
				Spec: appsv1beta2.DaemonSetSpec{
					Template: defaultTemplate,
				},
			},
			expected: &appsv1beta2.DaemonSet{
				ObjectMeta: metav1.ObjectMeta{
					Labels: defaultLabels,
				},
				Spec: appsv1beta2.DaemonSetSpec{
					Template: defaultTemplate,
					UpdateStrategy: appsv1beta2.DaemonSetUpdateStrategy{
						Type: appsv1beta2.RollingUpdateDaemonSetStrategyType,
						RollingUpdate: &appsv1beta2.RollingUpdateDaemonSet{
							MaxUnavailable: &maxUnavailable,
							MaxSurge:       &maxSurge,
						},
					},
					RevisionHistoryLimit: utilpointer.Int32Ptr(10),
				},
			},
		},
		{ // Labels change/defaulting test.
			original: &appsv1beta2.DaemonSet{
				ObjectMeta: metav1.ObjectMeta{
					Labels: map[string]string{
						"bar": "foo",
					},
				},
				Spec: appsv1beta2.DaemonSetSpec{
					Template:             defaultTemplate,
					RevisionHistoryLimit: utilpointer.Int32Ptr(1),
				},
			},
			expected: &appsv1beta2.DaemonSet{
				ObjectMeta: metav1.ObjectMeta{
					Labels: map[string]string{
						"bar": "foo",
					},
				},
				Spec: appsv1beta2.DaemonSetSpec{
					Template: defaultTemplate,
					UpdateStrategy: appsv1beta2.DaemonSetUpdateStrategy{
						Type: appsv1beta2.RollingUpdateDaemonSetStrategyType,
						RollingUpdate: &appsv1beta2.RollingUpdateDaemonSet{
							MaxUnavailable: &maxUnavailable,
							MaxSurge:       &maxSurge,
						},
					},
					RevisionHistoryLimit: utilpointer.Int32Ptr(1),
				},
			},
		},
		{ // OnDeleteDaemonSetStrategyType update strategy.
			original: &appsv1beta2.DaemonSet{
				Spec: appsv1beta2.DaemonSetSpec{
					Template: templateNoLabel,
					UpdateStrategy: appsv1beta2.DaemonSetUpdateStrategy{
						Type: appsv1beta2.OnDeleteDaemonSetStrategyType,
					},
				},
			},
			expected: &appsv1beta2.DaemonSet{
				Spec: appsv1beta2.DaemonSetSpec{
					Template: templateNoLabel,
					UpdateStrategy: appsv1beta2.DaemonSetUpdateStrategy{
						Type: appsv1beta2.OnDeleteDaemonSetStrategyType,
					},
					RevisionHistoryLimit: utilpointer.Int32Ptr(10),
				},
			},
		},
		{ // Custom unique label key.
			original: &appsv1beta2.DaemonSet{
				Spec: appsv1beta2.DaemonSetSpec{},
			},
			expected: &appsv1beta2.DaemonSet{
				Spec: appsv1beta2.DaemonSetSpec{
					Template: templateNoLabel,
					UpdateStrategy: appsv1beta2.DaemonSetUpdateStrategy{
						Type: appsv1beta2.RollingUpdateDaemonSetStrategyType,
						RollingUpdate: &appsv1beta2.RollingUpdateDaemonSet{
							MaxUnavailable: &maxUnavailable,
							MaxSurge:       &maxSurge,
						},
					},
					RevisionHistoryLimit: utilpointer.Int32Ptr(10),
				},
			},
		},
	}

	for i, test := range tests {
		original := test.original
		expected := test.expected
		obj2 := roundTrip(t, runtime.Object(original))
		got, ok := obj2.(*appsv1beta2.DaemonSet)
		if !ok {
			t.Errorf("(%d) unexpected object: %v", i, got)
			t.FailNow()
		}
		if !apiequality.Semantic.DeepEqual(got.Spec, expected.Spec) {
			t.Errorf("(%d) got different than expected\ngot:\n\t%+v\nexpected:\n\t%+v", i, got.Spec, expected.Spec)
		}
	}
}

func getMaxUnavailable(maxUnavailable int) *intstr.IntOrString {
	maxUnavailableIntOrStr := intstr.FromInt(maxUnavailable)
	return &maxUnavailableIntOrStr
}

func getPartition(partition int32) *int32 {
	return &partition
}

func TestSetDefaultStatefulSet(t *testing.T) {
	defaultLabels := map[string]string{"foo": "bar"}
	var defaultPartition int32 = 0
	var notTheDefaultPartition int32 = 42
	var defaultReplicas int32 = 1

	period := int64(v1.DefaultTerminationGracePeriodSeconds)
	defaultTemplate := v1.PodTemplateSpec{
		Spec: v1.PodSpec{
			DNSPolicy:                     v1.DNSClusterFirst,
			RestartPolicy:                 v1.RestartPolicyAlways,
			SecurityContext:               &v1.PodSecurityContext{},
			TerminationGracePeriodSeconds: &period,
			SchedulerName:                 v1.DefaultSchedulerName,
		},
		ObjectMeta: metav1.ObjectMeta{
			Labels: defaultLabels,
		},
	}

	tests := []struct {
		name                       string
		original                   *appsv1beta2.StatefulSet
		expected                   *appsv1beta2.StatefulSet
		enableMaxUnavailablePolicy bool
	}{
		{
			name: "labels and default update strategy",
			original: &appsv1beta2.StatefulSet{
				Spec: appsv1beta2.StatefulSetSpec{
					Template: defaultTemplate,
				},
			},
			expected: &appsv1beta2.StatefulSet{
				ObjectMeta: metav1.ObjectMeta{
					Labels: defaultLabels,
				},
				Spec: appsv1beta2.StatefulSetSpec{
					Replicas:            &defaultReplicas,
					MinReadySeconds:     int32(0),
					Template:            defaultTemplate,
					PodManagementPolicy: appsv1beta2.OrderedReadyPodManagement,
					UpdateStrategy: appsv1beta2.StatefulSetUpdateStrategy{
						Type: appsv1beta2.RollingUpdateStatefulSetStrategyType,
						RollingUpdate: &appsv1beta2.RollingUpdateStatefulSetStrategy{
							Partition: &defaultPartition,
						},
					},
					RevisionHistoryLimit: utilpointer.Int32Ptr(10),
				},
			},
		},
		{
			name: "Alternate update strategy",
			original: &appsv1beta2.StatefulSet{
				Spec: appsv1beta2.StatefulSetSpec{
					Template: defaultTemplate,
					UpdateStrategy: appsv1beta2.StatefulSetUpdateStrategy{
						Type: appsv1beta2.OnDeleteStatefulSetStrategyType,
					},
				},
			},
			expected: &appsv1beta2.StatefulSet{
				ObjectMeta: metav1.ObjectMeta{
					Labels: defaultLabels,
				},
				Spec: appsv1beta2.StatefulSetSpec{
					Replicas:            &defaultReplicas,
					MinReadySeconds:     int32(0),
					Template:            defaultTemplate,
					PodManagementPolicy: appsv1beta2.OrderedReadyPodManagement,
					UpdateStrategy: appsv1beta2.StatefulSetUpdateStrategy{
						Type: appsv1beta2.OnDeleteStatefulSetStrategyType,
					},
					RevisionHistoryLimit: utilpointer.Int32Ptr(10),
				},
			},
		},
		{
			name: "Parallel pod management policy.",
			original: &appsv1beta2.StatefulSet{
				Spec: appsv1beta2.StatefulSetSpec{
					Template:            defaultTemplate,
					PodManagementPolicy: appsv1beta2.ParallelPodManagement,
				},
			},
			expected: &appsv1beta2.StatefulSet{
				ObjectMeta: metav1.ObjectMeta{
					Labels: defaultLabels,
				},
				Spec: appsv1beta2.StatefulSetSpec{
					Replicas:            &defaultReplicas,
					MinReadySeconds:     int32(0),
					Template:            defaultTemplate,
					PodManagementPolicy: appsv1beta2.ParallelPodManagement,
					UpdateStrategy: appsv1beta2.StatefulSetUpdateStrategy{
						Type: appsv1beta2.RollingUpdateStatefulSetStrategyType,
						RollingUpdate: &appsv1beta2.RollingUpdateStatefulSetStrategy{
							Partition: &defaultPartition,
						},
					},
					RevisionHistoryLimit: utilpointer.Int32Ptr(10),
				},
			},
		},
		{
			name: "MaxUnavailable disabled, with maxUnavailable not specified",
			original: &appsv1beta2.StatefulSet{
				Spec: appsv1beta2.StatefulSetSpec{
					Template: defaultTemplate,
				},
			},
			expected: &appsv1beta2.StatefulSet{
				ObjectMeta: metav1.ObjectMeta{
					Labels: defaultLabels,
				},
				Spec: appsv1beta2.StatefulSetSpec{
					Replicas:            &defaultReplicas,
					Template:            defaultTemplate,
					PodManagementPolicy: appsv1beta2.OrderedReadyPodManagement,
					UpdateStrategy: appsv1beta2.StatefulSetUpdateStrategy{
						Type: appsv1beta2.RollingUpdateStatefulSetStrategyType,
						RollingUpdate: &appsv1beta2.RollingUpdateStatefulSetStrategy{
							Partition: getPartition(0),
						},
					},
					RevisionHistoryLimit: utilpointer.Int32Ptr(10),
				},
			},
			enableMaxUnavailablePolicy: false,
		},
		{
			name: "MaxUnavailable disabled, with default maxUnavailable specified",
			original: &appsv1beta2.StatefulSet{
				Spec: appsv1beta2.StatefulSetSpec{
					Template: defaultTemplate,
					UpdateStrategy: appsv1beta2.StatefulSetUpdateStrategy{
						RollingUpdate: &appsv1beta2.RollingUpdateStatefulSetStrategy{
							Partition:      &defaultPartition,
							MaxUnavailable: getMaxUnavailable(1),
						},
					},
				},
			},
			expected: &appsv1beta2.StatefulSet{
				ObjectMeta: metav1.ObjectMeta{
					Labels: defaultLabels,
				},
				Spec: appsv1beta2.StatefulSetSpec{
					Replicas:            &defaultReplicas,
					Template:            defaultTemplate,
					PodManagementPolicy: appsv1beta2.OrderedReadyPodManagement,
					UpdateStrategy: appsv1beta2.StatefulSetUpdateStrategy{
						Type: appsv1beta2.RollingUpdateStatefulSetStrategyType,
						RollingUpdate: &appsv1beta2.RollingUpdateStatefulSetStrategy{
							Partition:      getPartition(0),
							MaxUnavailable: getMaxUnavailable(1),
						},
					},
					RevisionHistoryLimit: utilpointer.Int32Ptr(10),
				},
			},
			enableMaxUnavailablePolicy: false,
		},
		{
			name: "MaxUnavailable disabled, with non default maxUnavailable specified",
			original: &appsv1beta2.StatefulSet{
				Spec: appsv1beta2.StatefulSetSpec{
					Template: defaultTemplate,
					UpdateStrategy: appsv1beta2.StatefulSetUpdateStrategy{
						RollingUpdate: &appsv1beta2.RollingUpdateStatefulSetStrategy{
							Partition:      &notTheDefaultPartition,
							MaxUnavailable: getMaxUnavailable(3),
						},
					},
				},
			},
			expected: &appsv1beta2.StatefulSet{
				ObjectMeta: metav1.ObjectMeta{
					Labels: defaultLabels,
				},
				Spec: appsv1beta2.StatefulSetSpec{
					Replicas:            &defaultReplicas,
					Template:            defaultTemplate,
					PodManagementPolicy: appsv1beta2.OrderedReadyPodManagement,
					UpdateStrategy: appsv1beta2.StatefulSetUpdateStrategy{
						Type: appsv1beta2.RollingUpdateStatefulSetStrategyType,
						RollingUpdate: &appsv1beta2.RollingUpdateStatefulSetStrategy{
							Partition:      getPartition(42),
							MaxUnavailable: getMaxUnavailable(3),
						},
					},
					RevisionHistoryLimit: utilpointer.Int32Ptr(10),
				},
			},
			enableMaxUnavailablePolicy: false,
		},
		{
			name: "MaxUnavailable enabled, with no maxUnavailable specified",
			original: &appsv1beta2.StatefulSet{
				Spec: appsv1beta2.StatefulSetSpec{
					Template: defaultTemplate,
				},
			},
			expected: &appsv1beta2.StatefulSet{
				ObjectMeta: metav1.ObjectMeta{
					Labels: defaultLabels,
				},
				Spec: appsv1beta2.StatefulSetSpec{
					Replicas:            &defaultReplicas,
					Template:            defaultTemplate,
					PodManagementPolicy: appsv1beta2.OrderedReadyPodManagement,
					UpdateStrategy: appsv1beta2.StatefulSetUpdateStrategy{
						Type: appsv1beta2.RollingUpdateStatefulSetStrategyType,
						RollingUpdate: &appsv1beta2.RollingUpdateStatefulSetStrategy{
							Partition:      getPartition(0),
							MaxUnavailable: getMaxUnavailable(1),
						},
					},
					RevisionHistoryLimit: utilpointer.Int32Ptr(10),
				},
			},
			enableMaxUnavailablePolicy: true,
		},
		{
			name: "MaxUnavailable enabled, with non default maxUnavailable specified",
			original: &appsv1beta2.StatefulSet{
				Spec: appsv1beta2.StatefulSetSpec{
					Template: defaultTemplate,
					UpdateStrategy: appsv1beta2.StatefulSetUpdateStrategy{
						RollingUpdate: &appsv1beta2.RollingUpdateStatefulSetStrategy{
							Partition:      &notTheDefaultPartition,
							MaxUnavailable: getMaxUnavailable(3),
						},
					},
				},
			},
			expected: &appsv1beta2.StatefulSet{
				ObjectMeta: metav1.ObjectMeta{
					Labels: defaultLabels,
				},
				Spec: appsv1beta2.StatefulSetSpec{
					Replicas:            &defaultReplicas,
					Template:            defaultTemplate,
					PodManagementPolicy: appsv1beta2.OrderedReadyPodManagement,
					UpdateStrategy: appsv1beta2.StatefulSetUpdateStrategy{
						Type: appsv1beta2.RollingUpdateStatefulSetStrategyType,
						RollingUpdate: &appsv1beta2.RollingUpdateStatefulSetStrategy{
							Partition:      getPartition(42),
							MaxUnavailable: getMaxUnavailable(3),
						},
					},
					RevisionHistoryLimit: utilpointer.Int32Ptr(10),
				},
			},
			enableMaxUnavailablePolicy: true,
		},
	}

	for _, test := range tests {
		test := test
		t.Run(test.name, func(t *testing.T) {
			defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.MaxUnavailableStatefulSet, test.enableMaxUnavailablePolicy)()
			obj2 := roundTrip(t, runtime.Object(test.original))
			got, ok := obj2.(*appsv1beta2.StatefulSet)
			if !ok {
				t.Errorf("unexpected object: %v", got)
				t.FailNow()
			}
			if !apiequality.Semantic.DeepEqual(got.Spec, test.expected.Spec) {
				t.Errorf("got different than expected\ngot:\n\t%+v\nexpected:\n\t%+v", got.Spec, test.expected.Spec)
			}
		})
	}
}

func TestSetDefaultDeployment(t *testing.T) {
	defaultIntOrString := intstr.FromString("25%")
	differentIntOrString := intstr.FromInt(5)
	period := int64(v1.DefaultTerminationGracePeriodSeconds)
	defaultTemplate := v1.PodTemplateSpec{
		Spec: v1.PodSpec{
			DNSPolicy:                     v1.DNSClusterFirst,
			RestartPolicy:                 v1.RestartPolicyAlways,
			SecurityContext:               &v1.PodSecurityContext{},
			TerminationGracePeriodSeconds: &period,
			SchedulerName:                 v1.DefaultSchedulerName,
		},
	}
	tests := []struct {
		original *appsv1beta2.Deployment
		expected *appsv1beta2.Deployment
	}{
		{
			original: &appsv1beta2.Deployment{},
			expected: &appsv1beta2.Deployment{
				Spec: appsv1beta2.DeploymentSpec{
					Replicas: utilpointer.Int32Ptr(1),
					Strategy: appsv1beta2.DeploymentStrategy{
						Type: appsv1beta2.RollingUpdateDeploymentStrategyType,
						RollingUpdate: &appsv1beta2.RollingUpdateDeployment{
							MaxSurge:       &defaultIntOrString,
							MaxUnavailable: &defaultIntOrString,
						},
					},
					RevisionHistoryLimit:    utilpointer.Int32Ptr(10),
					ProgressDeadlineSeconds: utilpointer.Int32Ptr(600),
					Template:                defaultTemplate,
				},
			},
		},
		{
			original: &appsv1beta2.Deployment{
				Spec: appsv1beta2.DeploymentSpec{
					Replicas: utilpointer.Int32Ptr(5),
					Strategy: appsv1beta2.DeploymentStrategy{
						RollingUpdate: &appsv1beta2.RollingUpdateDeployment{
							MaxSurge: &differentIntOrString,
						},
					},
				},
			},
			expected: &appsv1beta2.Deployment{
				Spec: appsv1beta2.DeploymentSpec{
					Replicas: utilpointer.Int32Ptr(5),
					Strategy: appsv1beta2.DeploymentStrategy{
						Type: appsv1beta2.RollingUpdateDeploymentStrategyType,
						RollingUpdate: &appsv1beta2.RollingUpdateDeployment{
							MaxSurge:       &differentIntOrString,
							MaxUnavailable: &defaultIntOrString,
						},
					},
					RevisionHistoryLimit:    utilpointer.Int32Ptr(10),
					ProgressDeadlineSeconds: utilpointer.Int32Ptr(600),
					Template:                defaultTemplate,
				},
			},
		},
		{
			original: &appsv1beta2.Deployment{
				Spec: appsv1beta2.DeploymentSpec{
					Replicas: utilpointer.Int32Ptr(3),
					Strategy: appsv1beta2.DeploymentStrategy{
						Type:          appsv1beta2.RollingUpdateDeploymentStrategyType,
						RollingUpdate: nil,
					},
				},
			},
			expected: &appsv1beta2.Deployment{
				Spec: appsv1beta2.DeploymentSpec{
					Replicas: utilpointer.Int32Ptr(3),
					Strategy: appsv1beta2.DeploymentStrategy{
						Type: appsv1beta2.RollingUpdateDeploymentStrategyType,
						RollingUpdate: &appsv1beta2.RollingUpdateDeployment{
							MaxSurge:       &defaultIntOrString,
							MaxUnavailable: &defaultIntOrString,
						},
					},
					RevisionHistoryLimit:    utilpointer.Int32Ptr(10),
					ProgressDeadlineSeconds: utilpointer.Int32Ptr(600),
					Template:                defaultTemplate,
				},
			},
		},
		{
			original: &appsv1beta2.Deployment{
				Spec: appsv1beta2.DeploymentSpec{
					Replicas: utilpointer.Int32Ptr(5),
					Strategy: appsv1beta2.DeploymentStrategy{
						Type: appsv1beta2.RecreateDeploymentStrategyType,
					},
					RevisionHistoryLimit: utilpointer.Int32Ptr(0),
				},
			},
			expected: &appsv1beta2.Deployment{
				Spec: appsv1beta2.DeploymentSpec{
					Replicas: utilpointer.Int32Ptr(5),
					Strategy: appsv1beta2.DeploymentStrategy{
						Type: appsv1beta2.RecreateDeploymentStrategyType,
					},
					RevisionHistoryLimit:    utilpointer.Int32Ptr(0),
					ProgressDeadlineSeconds: utilpointer.Int32Ptr(600),
					Template:                defaultTemplate,
				},
			},
		},
		{
			original: &appsv1beta2.Deployment{
				Spec: appsv1beta2.DeploymentSpec{
					Replicas: utilpointer.Int32Ptr(5),
					Strategy: appsv1beta2.DeploymentStrategy{
						Type: appsv1beta2.RecreateDeploymentStrategyType,
					},
					ProgressDeadlineSeconds: utilpointer.Int32Ptr(30),
					RevisionHistoryLimit:    utilpointer.Int32Ptr(2),
				},
			},
			expected: &appsv1beta2.Deployment{
				Spec: appsv1beta2.DeploymentSpec{
					Replicas: utilpointer.Int32Ptr(5),
					Strategy: appsv1beta2.DeploymentStrategy{
						Type: appsv1beta2.RecreateDeploymentStrategyType,
					},
					ProgressDeadlineSeconds: utilpointer.Int32Ptr(30),
					RevisionHistoryLimit:    utilpointer.Int32Ptr(2),
					Template:                defaultTemplate,
				},
			},
		},
	}

	for _, test := range tests {
		original := test.original
		expected := test.expected
		obj2 := roundTrip(t, runtime.Object(original))
		got, ok := obj2.(*appsv1beta2.Deployment)
		if !ok {
			t.Errorf("unexpected object: %v", got)
			t.FailNow()
		}
		if !apiequality.Semantic.DeepEqual(got.Spec, expected.Spec) {
			t.Errorf("object mismatch!\nexpected:\n\t%+v\ngot:\n\t%+v", got.Spec, expected.Spec)
		}
	}
}

func TestDefaultDeploymentAvailability(t *testing.T) {
	d := roundTrip(t, runtime.Object(&appsv1beta2.Deployment{})).(*appsv1beta2.Deployment)

	maxUnavailable, err := intstr.GetScaledValueFromIntOrPercent(d.Spec.Strategy.RollingUpdate.MaxUnavailable, int(*(d.Spec.Replicas)), false)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}

	if *(d.Spec.Replicas)-int32(maxUnavailable) <= 0 {
		t.Fatalf("the default value of maxUnavailable can lead to no active replicas during rolling update")
	}
}

func TestSetDefaultReplicaSetReplicas(t *testing.T) {
	tests := []struct {
		rs             appsv1beta2.ReplicaSet
		expectReplicas int32
	}{
		{
			rs: appsv1beta2.ReplicaSet{
				Spec: appsv1beta2.ReplicaSetSpec{
					Template: v1.PodTemplateSpec{
						ObjectMeta: metav1.ObjectMeta{
							Labels: map[string]string{
								"foo": "bar",
							},
						},
					},
				},
			},
			expectReplicas: 1,
		},
		{
			rs: appsv1beta2.ReplicaSet{
				Spec: appsv1beta2.ReplicaSetSpec{
					Replicas: utilpointer.Int32Ptr(0),
					Template: v1.PodTemplateSpec{
						ObjectMeta: metav1.ObjectMeta{
							Labels: map[string]string{
								"foo": "bar",
							},
						},
					},
				},
			},
			expectReplicas: 0,
		},
		{
			rs: appsv1beta2.ReplicaSet{
				Spec: appsv1beta2.ReplicaSetSpec{
					Replicas: utilpointer.Int32Ptr(3),
					Template: v1.PodTemplateSpec{
						ObjectMeta: metav1.ObjectMeta{
							Labels: map[string]string{
								"foo": "bar",
							},
						},
					},
				},
			},
			expectReplicas: 3,
		},
	}

	for _, test := range tests {
		rs := &test.rs
		obj2 := roundTrip(t, runtime.Object(rs))
		rs2, ok := obj2.(*appsv1beta2.ReplicaSet)
		if !ok {
			t.Errorf("unexpected object: %v", rs2)
			t.FailNow()
		}
		if rs2.Spec.Replicas == nil {
			t.Errorf("unexpected nil Replicas")
		} else if test.expectReplicas != *rs2.Spec.Replicas {
			t.Errorf("expected: %d replicas, got: %d", test.expectReplicas, *rs2.Spec.Replicas)
		}
	}
}

func TestDefaultRequestIsNotSetForReplicaSet(t *testing.T) {
	s := v1.PodSpec{}
	s.Containers = []v1.Container{
		{
			Resources: v1.ResourceRequirements{
				Limits: v1.ResourceList{
					v1.ResourceCPU: resource.MustParse("100m"),
				},
			},
		},
	}
	rs := &appsv1beta2.ReplicaSet{
		Spec: appsv1beta2.ReplicaSetSpec{
			Replicas: utilpointer.Int32Ptr(3),
			Template: v1.PodTemplateSpec{
				ObjectMeta: metav1.ObjectMeta{
					Labels: map[string]string{
						"foo": "bar",
					},
				},
				Spec: s,
			},
		},
	}
	output := roundTrip(t, runtime.Object(rs))
	rs2 := output.(*appsv1beta2.ReplicaSet)
	defaultRequest := rs2.Spec.Template.Spec.Containers[0].Resources.Requests
	requestValue := defaultRequest[v1.ResourceCPU]
	if requestValue.String() != "0" {
		t.Errorf("Expected 0 request value, got: %s", requestValue.String())
	}
}

func roundTrip(t *testing.T, obj runtime.Object) runtime.Object {
	data, err := runtime.Encode(legacyscheme.Codecs.LegacyCodec(SchemeGroupVersion), obj)
	if err != nil {
		t.Errorf("%v\n %#v", err, obj)
		return nil
	}
	obj2, err := runtime.Decode(legacyscheme.Codecs.UniversalDecoder(), data)
	if err != nil {
		t.Errorf("%v\nData: %s\nSource: %#v", err, string(data), obj)
		return nil
	}
	obj3 := reflect.New(reflect.TypeOf(obj).Elem()).Interface().(runtime.Object)
	err = legacyscheme.Scheme.Convert(obj2, obj3, nil)
	if err != nil {
		t.Errorf("%v\nSource: %#v", err, obj2)
		return nil
	}
	return obj3
}

相关信息

kubernetes 源码目录

相关文章

kubernetes conversion 源码

kubernetes conversion_test 源码

kubernetes defaults 源码

kubernetes doc 源码

kubernetes register 源码

kubernetes zz_generated.conversion 源码

kubernetes zz_generated.defaults 源码

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所属分类： 后端技术
本文标签： docker golang
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