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// Copyright 2014 Google Inc. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
// +build !appengine
package internal
import (
"io"
"io/ioutil"
"net/http"
"net/http/httptest"
"testing"
)
func TestInstallingHealthChecker(t *testing.T) {
try := func(desc string, mux *http.ServeMux, wantCode int, wantBody string) {
installHealthChecker(mux)
srv := httptest.NewServer(mux)
defer srv.Close()
resp, err := http.Get(srv.URL + "/_ah/health")
if err != nil {
t.Errorf("%s: http.Get: %v", desc, err)
return
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
t.Errorf("%s: reading body: %v", desc, err)
return
}
if resp.StatusCode != wantCode {
t.Errorf("%s: got HTTP %d, want %d", desc, resp.StatusCode, wantCode)
return
}
if wantBody != "" && string(body) != wantBody {
t.Errorf("%s: got HTTP body %q, want %q", desc, body, wantBody)
return
}
}
// If there's no handlers, or only a root handler, a health checker should be installed.
try("empty mux", http.NewServeMux(), 200, "ok")
mux := http.NewServeMux()
mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
io.WriteString(w, "root handler")
})
try("mux with root handler", mux, 200, "ok")
// If there's a custom health check handler, one should not be installed.
mux = http.NewServeMux()
mux.HandleFunc("/_ah/health", func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(418)
io.WriteString(w, "I'm short and stout!")
})
try("mux with custom health checker", mux, 418, "I'm short and stout!")
}
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