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helm/pkg/kube/client_test.go

342 lines
7.3 KiB

/*
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 kube
import (
"bytes"
"encoding/json"
"io"
"io/ioutil"
"net/http"
"strings"
"testing"
"k8s.io/kubernetes/pkg/api/meta"
"k8s.io/kubernetes/pkg/api/unversioned"
api "k8s.io/kubernetes/pkg/api/v1"
"k8s.io/kubernetes/pkg/client/unversioned/fake"
"k8s.io/kubernetes/pkg/kubectl/resource"
"k8s.io/kubernetes/pkg/runtime"
)
func TestUpdateResource(t *testing.T) {
tests := []struct {
name string
namespace string
modified *resource.Info
currentObj runtime.Object
err bool
errMessage string
}{
{
name: "no changes when updating resources",
modified: createFakeInfo("nginx", nil),
currentObj: createFakePod("nginx", nil),
err: true,
errMessage: "Looks like there are no changes for nginx",
},
//{
//name: "valid update input",
//modified: createFakeInfo("nginx", map[string]string{"app": "nginx"}),
//currentObj: createFakePod("nginx", nil),
//},
}
for _, tt := range tests {
err := updateResource(tt.modified, tt.currentObj)
if err != nil && err.Error() != tt.errMessage {
t.Errorf("%q. expected error message: %v, got %v", tt.name, tt.errMessage, err)
}
}
}
func TestPerform(t *testing.T) {
tests := []struct {
name string
namespace string
reader io.Reader
count int
err bool
errMessage string
}{
{
name: "Valid input",
namespace: "test",
reader: strings.NewReader(guestbookManifest),
count: 6,
}, {
name: "Empty manifests",
namespace: "test",
reader: strings.NewReader(""),
err: true,
errMessage: "no objects visited",
},
}
for _, tt := range tests {
results := []*resource.Info{}
fn := func(info *resource.Info) error {
results = append(results, info)
if info.Namespace != tt.namespace {
t.Errorf("%q. expected namespace to be '%s', got %s", tt.name, tt.namespace, info.Namespace)
}
return nil
}
c := New(nil)
c.ClientForMapping = func(mapping *meta.RESTMapping) (resource.RESTClient, error) {
return &fake.RESTClient{}, nil
}
err := perform(c, tt.namespace, tt.reader, fn)
if (err != nil) != tt.err {
t.Errorf("%q. expected error: %v, got %v", tt.name, tt.err, err)
}
if err != nil && err.Error() != tt.errMessage {
t.Errorf("%q. expected error message: %v, got %v", tt.name, tt.errMessage, err)
}
if len(results) != tt.count {
t.Errorf("%q. expected %d result objects, got %d", tt.name, tt.count, len(results))
}
}
}
func TestReal(t *testing.T) {
t.Skip("This is a live test, comment this line to run")
if err := New(nil).Create("test", strings.NewReader(guestbookManifest)); err != nil {
t.Fatal(err)
}
testSvcEndpointManifest := testServiceManifest + "\n---\n" + testEndpointManifest
c := New(nil)
if err := c.Create("test-delete", strings.NewReader(testSvcEndpointManifest)); err != nil {
t.Fatal(err)
}
if err := c.Delete("test-delete", strings.NewReader(testEndpointManifest)); err != nil {
t.Fatal(err)
}
// ensures that delete does not fail if a resource is not found
if err := c.Delete("test-delete", strings.NewReader(testSvcEndpointManifest)); err != nil {
t.Fatal(err)
}
}
const testServiceManifest = `
kind: Service
apiVersion: v1
metadata:
name: my-service
spec:
selector:
app: myapp
ports:
- port: 80
protocol: TCP
targetPort: 9376
`
const testEndpointManifest = `
kind: Endpoints
apiVersion: v1
metadata:
name: my-service
subsets:
- addresses:
- ip: "1.2.3.4"
ports:
- port: 9376
`
const guestbookManifest = `
apiVersion: v1
kind: Service
metadata:
name: redis-master
labels:
app: redis
tier: backend
role: master
spec:
ports:
- port: 6379
targetPort: 6379
selector:
app: redis
tier: backend
role: master
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: redis-master
spec:
replicas: 1
template:
metadata:
labels:
app: redis
role: master
tier: backend
spec:
containers:
- name: master
image: gcr.io/google_containers/redis:e2e # or just image: redis
resources:
requests:
cpu: 100m
memory: 100Mi
ports:
- containerPort: 6379
---
apiVersion: v1
kind: Service
metadata:
name: redis-slave
labels:
app: redis
tier: backend
role: slave
spec:
ports:
# the port that this service should serve on
- port: 6379
selector:
app: redis
tier: backend
role: slave
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: redis-slave
spec:
replicas: 2
template:
metadata:
labels:
app: redis
role: slave
tier: backend
spec:
containers:
- name: slave
image: gcr.io/google_samples/gb-redisslave:v1
resources:
requests:
cpu: 100m
memory: 100Mi
env:
- name: GET_HOSTS_FROM
value: dns
ports:
- containerPort: 6379
---
apiVersion: v1
kind: Service
metadata:
name: frontend
labels:
app: guestbook
tier: frontend
spec:
ports:
- port: 80
selector:
app: guestbook
tier: frontend
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: frontend
spec:
replicas: 3
template:
metadata:
labels:
app: guestbook
tier: frontend
spec:
containers:
- name: php-redis
image: gcr.io/google-samples/gb-frontend:v4
resources:
requests:
cpu: 100m
memory: 100Mi
env:
- name: GET_HOSTS_FROM
value: dns
ports:
- containerPort: 80
`
func createFakePod(name string, labels map[string]string) runtime.Object {
objectMeta := createObjectMeta(name, labels)
object := &api.Pod{
ObjectMeta: objectMeta,
}
return object
}
func createFakeInfo(name string, labels map[string]string) *resource.Info {
pod := createFakePod(name, labels)
marshaledObj, _ := json.Marshal(pod)
mapping := &meta.RESTMapping{
Resource: name,
Scope: meta.RESTScopeNamespace,
GroupVersionKind: unversioned.GroupVersionKind{
Kind: "Pod",
Version: "v1",
}}
client := &fake.RESTClient{
Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
header := http.Header{}
header.Set("Content-Type", runtime.ContentTypeJSON)
return &http.Response{
StatusCode: 200,
Header: header,
Body: ioutil.NopCloser(bytes.NewReader(marshaledObj)),
}, nil
})}
info := resource.NewInfo(client, mapping, "default", "nginx", false)
info.Object = pod
return info
}
func createObjectMeta(name string, labels map[string]string) api.ObjectMeta {
objectMeta := api.ObjectMeta{Name: name, Namespace: "default"}
if labels != nil {
objectMeta.Labels = labels
}
return objectMeta
}