Kyle Isom
20dc7ae0d6
- Handler(db) returns http.HandlerFunc: 200 ok / 503 unhealthy - RegisterGRPC registers grpc.health.v1.Health on a gRPC server - 4 tests: healthy, unhealthy (closed db), content type, gRPC registration Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
98 lines
2.2 KiB
Go
98 lines
2.2 KiB
Go
package health
|
|
|
|
import (
|
|
"database/sql"
|
|
"encoding/json"
|
|
"net/http"
|
|
"net/http/httptest"
|
|
"path/filepath"
|
|
"testing"
|
|
|
|
"google.golang.org/grpc"
|
|
|
|
"git.wntrmute.dev/kyle/mcdsl/db"
|
|
)
|
|
|
|
func TestHandlerHealthy(t *testing.T) {
|
|
database := openTestDB(t)
|
|
|
|
handler := Handler(database)
|
|
rec := httptest.NewRecorder()
|
|
req := httptest.NewRequest(http.MethodGet, "/healthz", nil)
|
|
handler.ServeHTTP(rec, req)
|
|
|
|
if rec.Code != http.StatusOK {
|
|
t.Fatalf("status = %d, want %d", rec.Code, http.StatusOK)
|
|
}
|
|
|
|
var body map[string]string
|
|
if err := json.Unmarshal(rec.Body.Bytes(), &body); err != nil {
|
|
t.Fatalf("decode: %v", err)
|
|
}
|
|
if body["status"] != "ok" {
|
|
t.Fatalf("status = %q, want %q", body["status"], "ok")
|
|
}
|
|
}
|
|
|
|
func TestHandlerUnhealthy(t *testing.T) {
|
|
database := openTestDB(t)
|
|
// Close the database to simulate unhealthy state.
|
|
_ = database.Close()
|
|
|
|
handler := Handler(database)
|
|
rec := httptest.NewRecorder()
|
|
req := httptest.NewRequest(http.MethodGet, "/healthz", nil)
|
|
handler.ServeHTTP(rec, req)
|
|
|
|
if rec.Code != http.StatusServiceUnavailable {
|
|
t.Fatalf("status = %d, want %d", rec.Code, http.StatusServiceUnavailable)
|
|
}
|
|
|
|
var body map[string]string
|
|
if err := json.Unmarshal(rec.Body.Bytes(), &body); err != nil {
|
|
t.Fatalf("decode: %v", err)
|
|
}
|
|
if body["status"] != "unhealthy" {
|
|
t.Fatalf("status = %q, want %q", body["status"], "unhealthy")
|
|
}
|
|
if body["error"] == "" {
|
|
t.Fatal("expected error message")
|
|
}
|
|
}
|
|
|
|
func TestHandlerContentType(t *testing.T) {
|
|
database := openTestDB(t)
|
|
|
|
handler := Handler(database)
|
|
rec := httptest.NewRecorder()
|
|
req := httptest.NewRequest(http.MethodGet, "/healthz", nil)
|
|
handler.ServeHTTP(rec, req)
|
|
|
|
if ct := rec.Header().Get("Content-Type"); ct != "application/json" {
|
|
t.Fatalf("Content-Type = %q, want %q", ct, "application/json")
|
|
}
|
|
}
|
|
|
|
func TestRegisterGRPC(t *testing.T) {
|
|
srv := grpc.NewServer()
|
|
// Should not panic.
|
|
RegisterGRPC(srv)
|
|
|
|
info := srv.GetServiceInfo()
|
|
if _, ok := info["grpc.health.v1.Health"]; !ok {
|
|
t.Fatal("health service not registered")
|
|
}
|
|
}
|
|
|
|
func openTestDB(t *testing.T) *sql.DB {
|
|
t.Helper()
|
|
dir := t.TempDir()
|
|
path := filepath.Join(dir, "test.db")
|
|
database, err := db.Open(path)
|
|
if err != nil {
|
|
t.Fatalf("db.Open: %v", err)
|
|
}
|
|
t.Cleanup(func() { _ = database.Close() })
|
|
return database
|
|
}
|