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validator_test.go
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/
validator_test.go
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/*
Copyright 2014 Google Inc. 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 apiserver
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"net"
"net/http"
"net/http/httptest"
"strconv"
"testing"
"github.com/GoogleCloudPlatform/kubernetes/pkg/probe"
"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
)
type fakeRoundTripper struct {
err error
resp *http.Response
url string
}
func (f *fakeRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
f.url = req.URL.String()
return f.resp, f.err
}
func TestValidate(t *testing.T) {
tests := []struct {
err error
data string
expectedStatus probe.Result
code int
expectErr bool
}{
{fmt.Errorf("test error"), "", probe.Unknown, 500 /*ignored*/, true},
{nil, "foo", probe.Success, 200, false},
{nil, "foo", probe.Failure, 500, true},
}
s := Server{Addr: "foo.com", Port: 8080, Path: "/healthz"}
for _, test := range tests {
fakeRT := &fakeRoundTripper{
err: test.err,
resp: &http.Response{
Body: ioutil.NopCloser(bytes.NewBufferString(test.data)),
StatusCode: test.code,
},
}
status, data, err := s.DoServerCheck(fakeRT)
expect := fmt.Sprintf("http://%s:%d/healthz", s.Addr, s.Port)
if fakeRT.url != expect {
t.Errorf("expected %s, got %s", expect, fakeRT.url)
}
if test.expectErr && err == nil {
t.Errorf("unexpected non-error")
}
if !test.expectErr && err != nil {
t.Errorf("unexpected error: %v", err)
}
if data != test.data {
t.Errorf("expected empty string, got %s", status)
}
if status != test.expectedStatus {
t.Errorf("expected %s, got %s", test.expectedStatus.String(), status.String())
}
}
}
func makeTestValidator(servers map[string]string, rt http.RoundTripper) (http.Handler, error) {
result := map[string]Server{}
for name, value := range servers {
host, port, err := net.SplitHostPort(value)
if err != nil {
return nil, fmt.Errorf("invalid server spec: %s (%v)", value, err)
}
val, err := strconv.Atoi(port)
if err != nil {
return nil, fmt.Errorf("invalid server spec: %s (%v)", port, err)
}
result[name] = Server{Addr: host, Port: val, Path: "/healthz"}
}
return &validator{servers: func() map[string]Server { return result }, rt: rt}, nil
}
func TestValidator(t *testing.T) {
fake := &fakeRoundTripper{
resp: &http.Response{
Body: ioutil.NopCloser(bytes.NewBufferString("foo")),
StatusCode: 200,
},
}
validator, err := makeTestValidator(map[string]string{
"foo": "foo.com:80",
"bar": "bar.com:8080",
}, fake)
if err != nil {
t.Errorf("unexpected error: %v", err)
}
testServer := httptest.NewServer(validator)
defer testServer.Close()
resp, err := http.Get(testServer.URL + "/validatez")
if err != nil {
t.Errorf("unexpected error: %v", err)
}
if resp.StatusCode != http.StatusOK {
t.Errorf("unexpected response: %v", resp.StatusCode)
}
defer resp.Body.Close()
data, err := ioutil.ReadAll(resp.Body)
if err != nil {
t.Errorf("unexpected error: %v", err)
}
var status []ServerStatus
if err := json.Unmarshal(data, &status); err != nil {
t.Errorf("unexpected error: %v", err)
}
components := util.StringSet{}
for _, s := range status {
if s.Err != "nil" {
t.Errorf("Component %v is unhealthy: %v", s.Component, s.Err)
}
components.Insert(s.Component)
}
if len(status) != 2 || !components.Has("foo") || !components.Has("bar") {
t.Errorf("unexpected status: %#v", status)
}
}