81 lines
2.0 KiB
Go
81 lines
2.0 KiB
Go
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// Copyright 2016 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package metadata
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import (
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"bytes"
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"io/ioutil"
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"net/http"
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"os"
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"sync"
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"testing"
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)
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func TestOnGCE_Stress(t *testing.T) {
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if testing.Short() {
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t.Skip("skipping in -short mode")
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}
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var last bool
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for i := 0; i < 100; i++ {
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onGCEOnce = sync.Once{}
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now := OnGCE()
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if i > 0 && now != last {
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t.Errorf("%d. changed from %v to %v", i, last, now)
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}
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last = now
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}
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t.Logf("OnGCE() = %v", last)
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}
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func TestOnGCE_Force(t *testing.T) {
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onGCEOnce = sync.Once{}
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old := os.Getenv(metadataHostEnv)
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defer os.Setenv(metadataHostEnv, old)
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os.Setenv(metadataHostEnv, "127.0.0.1")
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if !OnGCE() {
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t.Error("OnGCE() = false; want true")
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}
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}
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func TestOverrideUserAgent(t *testing.T) {
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const userAgent = "my-user-agent"
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rt := &rrt{}
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c := NewClient(&http.Client{Transport: userAgentTransport{userAgent, rt}})
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c.Get("foo")
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if got, want := rt.gotUserAgent, userAgent; got != want {
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t.Errorf("got %q, want %q", got, want)
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}
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}
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type userAgentTransport struct {
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userAgent string
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base http.RoundTripper
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}
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func (t userAgentTransport) RoundTrip(req *http.Request) (*http.Response, error) {
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req.Header.Set("User-Agent", t.userAgent)
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return t.base.RoundTrip(req)
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}
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type rrt struct {
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gotUserAgent string
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}
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func (r *rrt) RoundTrip(req *http.Request) (*http.Response, error) {
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r.gotUserAgent = req.Header.Get("User-Agent")
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return &http.Response{Body: ioutil.NopCloser(bytes.NewReader(nil))}, nil
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}
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