kubernetes clusterroleaggregation_controller_test 源码
kubernetes clusterroleaggregation_controller_test 代码
文件路径:/pkg/controller/clusterroleaggregation/clusterroleaggregation_controller_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 clusterroleaggregation
import (
"context"
"testing"
rbacv1 "k8s.io/api/rbac/v1"
"k8s.io/apimachinery/pkg/api/equality"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/diff"
"k8s.io/apimachinery/pkg/util/yaml"
rbacv1ac "k8s.io/client-go/applyconfigurations/rbac/v1"
fakeclient "k8s.io/client-go/kubernetes/fake"
rbaclisters "k8s.io/client-go/listers/rbac/v1"
clienttesting "k8s.io/client-go/testing"
"k8s.io/client-go/tools/cache"
"k8s.io/kubernetes/pkg/controller"
)
func TestSyncClusterRole(t *testing.T) {
hammerRules := func() []rbacv1.PolicyRule {
return []rbacv1.PolicyRule{
{Verbs: []string{"hammer"}, Resources: []string{"nails"}},
{Verbs: []string{"hammer"}, Resources: []string{"wedges"}},
}
}
chiselRules := func() []rbacv1.PolicyRule {
return []rbacv1.PolicyRule{
{Verbs: []string{"chisel"}, Resources: []string{"mortises"}},
}
}
sawRules := func() []rbacv1.PolicyRule {
return []rbacv1.PolicyRule{
{Verbs: []string{"saw"}, Resources: []string{"boards"}},
}
}
role := func(name string, labels map[string]string, rules []rbacv1.PolicyRule) *rbacv1.ClusterRole {
return &rbacv1.ClusterRole{
ObjectMeta: metav1.ObjectMeta{Name: name, Labels: labels},
Rules: rules,
}
}
combinedRole := func(selectors []map[string]string, rules ...[]rbacv1.PolicyRule) *rbacv1.ClusterRole {
ret := &rbacv1.ClusterRole{
ObjectMeta: metav1.ObjectMeta{Name: "combined"},
AggregationRule: &rbacv1.AggregationRule{},
}
for _, selector := range selectors {
ret.AggregationRule.ClusterRoleSelectors = append(ret.AggregationRule.ClusterRoleSelectors,
metav1.LabelSelector{MatchLabels: selector})
}
for _, currRules := range rules {
ret.Rules = append(ret.Rules, currRules...)
}
return ret
}
combinedApplyRole := func(selectors []map[string]string, rules ...[]rbacv1.PolicyRule) *rbacv1ac.ClusterRoleApplyConfiguration {
ret := rbacv1ac.ClusterRole("combined")
var r []*rbacv1ac.PolicyRuleApplyConfiguration
for _, currRules := range rules {
r = append(r, toApplyPolicyRules(currRules)...)
}
ret.WithRules(r...)
return ret
}
tests := []struct {
name string
startingClusterRoles []*rbacv1.ClusterRole
clusterRoleToSync string
expectedClusterRole *rbacv1.ClusterRole
expectedClusterRoleApply *rbacv1ac.ClusterRoleApplyConfiguration
}{
{
name: "remove dead rules",
startingClusterRoles: []*rbacv1.ClusterRole{
role("hammer", map[string]string{"foo": "bar"}, hammerRules()),
combinedRole([]map[string]string{{"foo": "bar"}}, sawRules()),
},
clusterRoleToSync: "combined",
expectedClusterRole: combinedRole([]map[string]string{{"foo": "bar"}}, hammerRules()),
expectedClusterRoleApply: combinedApplyRole([]map[string]string{{"foo": "bar"}}, hammerRules()),
},
{
name: "strip rules",
startingClusterRoles: []*rbacv1.ClusterRole{
role("hammer", map[string]string{"foo": "not-bar"}, hammerRules()),
combinedRole([]map[string]string{{"foo": "bar"}}, hammerRules()),
},
clusterRoleToSync: "combined",
expectedClusterRole: combinedRole([]map[string]string{{"foo": "bar"}}),
expectedClusterRoleApply: combinedApplyRole([]map[string]string{{"foo": "bar"}}),
},
{
name: "select properly and put in order",
startingClusterRoles: []*rbacv1.ClusterRole{
role("hammer", map[string]string{"foo": "bar"}, hammerRules()),
role("chisel", map[string]string{"foo": "bar"}, chiselRules()),
role("saw", map[string]string{"foo": "not-bar"}, sawRules()),
combinedRole([]map[string]string{{"foo": "bar"}}),
},
clusterRoleToSync: "combined",
expectedClusterRole: combinedRole([]map[string]string{{"foo": "bar"}}, chiselRules(), hammerRules()),
expectedClusterRoleApply: combinedApplyRole([]map[string]string{{"foo": "bar"}}, chiselRules(), hammerRules()),
},
{
name: "select properly with multiple selectors",
startingClusterRoles: []*rbacv1.ClusterRole{
role("hammer", map[string]string{"foo": "bar"}, hammerRules()),
role("chisel", map[string]string{"foo": "bar"}, chiselRules()),
role("saw", map[string]string{"foo": "not-bar"}, sawRules()),
combinedRole([]map[string]string{{"foo": "bar"}, {"foo": "not-bar"}}),
},
clusterRoleToSync: "combined",
expectedClusterRole: combinedRole([]map[string]string{{"foo": "bar"}, {"foo": "not-bar"}}, chiselRules(), hammerRules(), sawRules()),
expectedClusterRoleApply: combinedApplyRole([]map[string]string{{"foo": "bar"}, {"foo": "not-bar"}}, chiselRules(), hammerRules(), sawRules()),
},
{
name: "select properly remove duplicates",
startingClusterRoles: []*rbacv1.ClusterRole{
role("hammer", map[string]string{"foo": "bar"}, hammerRules()),
role("chisel", map[string]string{"foo": "bar"}, chiselRules()),
role("saw", map[string]string{"foo": "bar"}, sawRules()),
role("other-saw", map[string]string{"foo": "not-bar"}, sawRules()),
combinedRole([]map[string]string{{"foo": "bar"}, {"foo": "not-bar"}}),
},
clusterRoleToSync: "combined",
expectedClusterRole: combinedRole([]map[string]string{{"foo": "bar"}, {"foo": "not-bar"}}, chiselRules(), hammerRules(), sawRules()),
expectedClusterRoleApply: combinedApplyRole([]map[string]string{{"foo": "bar"}, {"foo": "not-bar"}}, chiselRules(), hammerRules(), sawRules()),
},
{
name: "no diff skip",
startingClusterRoles: []*rbacv1.ClusterRole{
role("hammer", map[string]string{"foo": "bar"}, hammerRules()),
combinedRole([]map[string]string{{"foo": "bar"}}, hammerRules()),
},
clusterRoleToSync: "combined",
expectedClusterRoleApply: nil,
}}
for _, serverSideApplyEnabled := range []bool{true, false} {
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
indexer := cache.NewIndexer(controller.KeyFunc, cache.Indexers{})
objs := []runtime.Object{}
for _, obj := range test.startingClusterRoles {
objs = append(objs, obj)
indexer.Add(obj)
}
fakeClient := fakeclient.NewSimpleClientset(objs...)
// The default reactor doesn't support apply, so we need our own (trivial) reactor
fakeClient.PrependReactor("patch", "clusterroles", func(action clienttesting.Action) (handled bool, ret runtime.Object, err error) {
if serverSideApplyEnabled == false {
// UnsupportedMediaType
return true, nil, errors.NewGenericServerResponse(415, "get", action.GetResource().GroupResource(), "test", "Apply not supported", 0, true)
}
return true, nil, nil // clusterroleaggregator drops returned objects so no point in constructing them
})
c := ClusterRoleAggregationController{
clusterRoleClient: fakeClient.RbacV1(),
clusterRoleLister: rbaclisters.NewClusterRoleLister(indexer),
}
err := c.syncClusterRole(context.TODO(), test.clusterRoleToSync)
if err != nil {
t.Fatal(err)
}
if test.expectedClusterRoleApply == nil {
if len(fakeClient.Actions()) != 0 {
t.Fatalf("unexpected actions %#v", fakeClient.Actions())
}
return
}
expectedActions := 1
if !serverSideApplyEnabled {
expectedActions = 2
}
if len(fakeClient.Actions()) != expectedActions {
t.Fatalf("unexpected actions %#v", fakeClient.Actions())
}
action := fakeClient.Actions()[0]
if !action.Matches("patch", "clusterroles") {
t.Fatalf("unexpected action %#v", action)
}
applyAction, ok := action.(clienttesting.PatchAction)
if !ok {
t.Fatalf("unexpected action %#v", action)
}
ac := &rbacv1ac.ClusterRoleApplyConfiguration{}
if err := yaml.Unmarshal(applyAction.GetPatch(), ac); err != nil {
t.Fatalf("error unmarshalling apply request: %v", err)
}
if !equality.Semantic.DeepEqual(ac, test.expectedClusterRoleApply) {
t.Fatalf("%v", diff.ObjectDiff(test.expectedClusterRoleApply, ac))
}
if expectedActions == 2 {
action := fakeClient.Actions()[1]
if !action.Matches("update", "clusterroles") {
t.Fatalf("unexpected action %#v", action)
}
updateAction, ok := action.(clienttesting.UpdateAction)
if !ok {
t.Fatalf("unexpected action %#v", action)
}
if !equality.Semantic.DeepEqual(updateAction.GetObject().(*rbacv1.ClusterRole), test.expectedClusterRole) {
t.Fatalf("%v", diff.ObjectDiff(test.expectedClusterRole, updateAction.GetObject().(*rbacv1.ClusterRole)))
}
}
})
}
}
}
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