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