Pierre-Olivier Mercier
660fda9c3a
Registered on the default FlagSet; ListenAndServe intercepts it and exits 0/1 after probing /health on the -listen address. Lets checker-* Dockerfiles add HEALTHCHECK without any main.go change, even though the runtime image is scratch (no shell, no curl, no wget).
72 lines
2.1 KiB
Go
72 lines
2.1 KiB
Go
// Copyright 2020-2026 The happyDomain Authors
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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 server
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import (
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"net/http"
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"net/http/httptest"
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"strings"
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"testing"
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)
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func TestRunHealthcheck_OK(t *testing.T) {
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mux := http.NewServeMux()
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mux.HandleFunc("/health", func(w http.ResponseWriter, _ *http.Request) {
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w.WriteHeader(http.StatusOK)
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})
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srv := httptest.NewServer(mux)
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defer srv.Close()
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addr := strings.TrimPrefix(srv.URL, "http://")
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if err := runHealthcheck(addr); err != nil {
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t.Fatalf("runHealthcheck(%s) returned error: %v", addr, err)
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}
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}
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func TestRunHealthcheck_NonOK(t *testing.T) {
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mux := http.NewServeMux()
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mux.HandleFunc("/health", func(w http.ResponseWriter, _ *http.Request) {
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w.WriteHeader(http.StatusServiceUnavailable)
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})
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srv := httptest.NewServer(mux)
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defer srv.Close()
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addr := strings.TrimPrefix(srv.URL, "http://")
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if err := runHealthcheck(addr); err == nil {
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t.Fatalf("runHealthcheck against 503 returned nil; want error")
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}
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}
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func TestRunHealthcheck_Unreachable(t *testing.T) {
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// Reserved-for-documentation port on loopback that nothing should bind.
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if err := runHealthcheck("127.0.0.1:1"); err == nil {
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t.Fatalf("runHealthcheck against unreachable port returned nil; want error")
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}
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}
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func TestNormalizeHealthcheckAddr(t *testing.T) {
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cases := map[string]string{
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":8080": "127.0.0.1:8080",
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"127.0.0.1:8080": "127.0.0.1:8080",
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"0.0.0.0:8080": "0.0.0.0:8080",
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"[::1]:8080": "[::1]:8080",
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"[::]:8080": "[::1]:8080",
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}
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for in, want := range cases {
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if got := normalizeHealthcheckAddr(in); got != want {
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t.Errorf("normalizeHealthcheckAddr(%q) = %q, want %q", in, got, want)
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}
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}
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}
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