레포 업데이트

backend/internal/logger/logger_test.go

@@ -0,0 +1,69 @@
+package logger
+
+import (
+	"bytes"
+	"log/slog"
+	"strings"
+	"testing"
+)
+
+func TestResolveBackendLogLevel_DefaultsByAppEnv(t *testing.T) {
+	t.Parallel()
+
+	testCases := []struct {
+		name      string
+		appEnv    string
+		wantLevel slog.Level
+	}{
+		{name: "dev uses debug", appEnv: "dev", wantLevel: slog.LevelDebug},
+		{name: "local uses debug", appEnv: "local", wantLevel: slog.LevelDebug},
+		{name: "development uses debug", appEnv: "development", wantLevel: slog.LevelDebug},
+		{name: "stage uses info", appEnv: "stage", wantLevel: slog.LevelInfo},
+		{name: "production uses info", appEnv: "production", wantLevel: slog.LevelInfo},
+	}
+
+	for _, tc := range testCases {
+		tc := tc
+		t.Run(tc.name, func(t *testing.T) {
+			t.Parallel()
+
+			got := ResolveBackendLogLevel(tc.appEnv, "")
+			if got != tc.wantLevel {
+				t.Fatalf("expected level %v, got %v", tc.wantLevel, got)
+			}
+		})
+	}
+}
+
+func TestResolveBackendLogLevel_OverrideWins(t *testing.T) {
+	t.Parallel()
+
+	got := ResolveBackendLogLevel("production", "debug")
+	if got != slog.LevelDebug {
+		t.Fatalf("expected debug override, got %v", got)
+	}
+
+	got = ResolveBackendLogLevel("dev", "warn")
+	if got != slog.LevelWarn {
+		t.Fatalf("expected warn override, got %v", got)
+	}
+}
+
+func TestInit_UsesResolvedBackendLogLevel(t *testing.T) {
+	var buf bytes.Buffer
+	previous := slog.Default()
+	defer slog.SetDefault(previous)
+
+	Init(Config{
+		ServiceName:   "baron-sso",
+		Environment:   "stage",
+		LevelOverride: "debug",
+		Output:        &buf,
+	})
+
+	slog.Debug("debug message should be visible")
+
+	if !strings.Contains(buf.String(), "debug message should be visible") {
+		t.Fatalf("expected debug log to be written, got=%s", buf.String())
+	}
+}