blob: f779c18b7198aee8b0d346abf48f0805db80c684 [file] [log] [blame]
// Copyright 2016 Google LLC
//
// 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 metadata
import (
"bytes"
"io/ioutil"
"log"
"net/http"
"os"
"sync"
"testing"
)
func TestOnGCE_Stress(t *testing.T) {
if testing.Short() {
t.Skip("skipping in -short mode")
}
var last bool
for i := 0; i < 100; i++ {
onGCEOnce = sync.Once{}
now := OnGCE()
if i > 0 && now != last {
t.Errorf("%d. changed from %v to %v", i, last, now)
}
last = now
}
t.Logf("OnGCE() = %v", last)
}
func TestOnGCE_Force(t *testing.T) {
onGCEOnce = sync.Once{}
old := os.Getenv(metadataHostEnv)
defer os.Setenv(metadataHostEnv, old)
os.Setenv(metadataHostEnv, "127.0.0.1")
if !OnGCE() {
t.Error("OnGCE() = false; want true")
}
}
func TestOverrideUserAgent(t *testing.T) {
const userAgent = "my-user-agent"
rt := &rrt{}
c := NewClient(&http.Client{Transport: userAgentTransport{userAgent, rt}})
c.Get("foo")
if got, want := rt.gotUserAgent, userAgent; got != want {
t.Errorf("got %q, want %q", got, want)
}
}
func TestGetFailsOnBadURL(t *testing.T) {
c := NewClient(http.DefaultClient)
old := os.Getenv(metadataHostEnv)
defer os.Setenv(metadataHostEnv, old)
os.Setenv(metadataHostEnv, "host:-1")
_, err := c.Get("suffix")
log.Printf("%v", err)
if err == nil {
t.Errorf("got %v, want non-nil error", err)
}
}
func TestGet_LeadingSlash(t *testing.T) {
want := "http://169.254.169.254/computeMetadata/v1/instance/service-accounts/default/identity?audience=http://example.com"
tests := []struct {
name string
suffix string
}{
{
name: "without leading slash",
suffix: "instance/service-accounts/default/identity?audience=http://example.com",
},
{
name: "with leading slash",
suffix: "/instance/service-accounts/default/identity?audience=http://example.com",
},
}
for _, tc := range tests {
t.Run(tc.name, func(t *testing.T) {
ct := &captureTransport{}
c := NewClient(&http.Client{Transport: ct})
c.Get(tc.suffix)
if ct.url != want {
t.Fatalf("got %v, want %v", ct.url, want)
}
})
}
}
type captureTransport struct {
url string
}
func (ct *captureTransport) RoundTrip(req *http.Request) (*http.Response, error) {
ct.url = req.URL.String()
return &http.Response{Body: ioutil.NopCloser(bytes.NewReader(nil))}, nil
}
type userAgentTransport struct {
userAgent string
base http.RoundTripper
}
func (t userAgentTransport) RoundTrip(req *http.Request) (*http.Response, error) {
req.Header.Set("User-Agent", t.userAgent)
return t.base.RoundTrip(req)
}
type rrt struct {
gotUserAgent string
}
func (r *rrt) RoundTrip(req *http.Request) (*http.Response, error) {
r.gotUserAgent = req.Header.Get("User-Agent")
return &http.Response{Body: ioutil.NopCloser(bytes.NewReader(nil))}, nil
}