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// Copyright 2016 The Prometheus 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 web
import (
"net/url"
"testing"
)
func TestGlobalURL(t *testing.T) {
opts := &Options{
ListenAddress: ":9090",
ExternalURL: &url.URL{
Scheme: "https",
Host: "externalhost:80",
Path: "/path/prefix",
},
}
tests := []struct {
inURL string
outURL string
}{
{
// Nothing should change if the input URL is not on localhost, even if the port is our listening port.
inURL: "http://somehost:9090/metrics",
outURL: "http://somehost:9090/metrics",
},
{
// Port and host should change if target is on localhost and port is our listening port.
inURL: "http://localhost:9090/metrics",
outURL: "https://externalhost:80/metrics",
},
{
// Only the host should change if the port is not our listening port, but the host is localhost.
inURL: "http://localhost:8000/metrics",
outURL: "http://externalhost:8000/metrics",
},
{
// Alternative localhost representations should also work.
inURL: "http://127.0.0.1:9090/metrics",
outURL: "https://externalhost:80/metrics",
},
}
for i, test := range tests {
inURL, err := url.Parse(test.inURL)
if err != nil {
t.Fatalf("%d. Error parsing input URL: %s", i, err)
}
globalURL := tmplFuncs("", opts)["globalURL"].(func(u *url.URL) *url.URL)
outURL := globalURL(inURL)
if outURL.String() != test.outURL {
t.Fatalf("%d. got %s, want %s", i, outURL.String(), test.outURL)
}
}
}
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