更新

logger_test.go

@@ -0,0 +1,44 @@
+package mailx_test
+
+import (
+	"context"
+	"testing"
+
+	mailx "code.yun.ink/pkg/mailx"
+)
+
+// recordingLogger 记录日志调用的最小实现
+type recordingLogger struct{}
+
+func (recordingLogger) Debugf(context.Context, string, ...any) {}
+func (recordingLogger) Infof(context.Context, string, ...any)  {}
+func (recordingLogger) Warnf(context.Context, string, ...any)  {}
+func (recordingLogger) Errorf(context.Context, string, ...any) {}
+
+var _ mailx.Logger = recordingLogger{}
+
+func TestLoggerRoundTrip(t *testing.T) {
+	ctx := mailx.WithLogger(context.Background(), recordingLogger{})
+	l := mailx.LoggerFromContext(ctx)
+	if _, ok := l.(recordingLogger); !ok {
+		t.Fatalf("logger type = %T, want recordingLogger", l)
+	}
+}
+
+func TestLoggerDefaultNotNil(t *testing.T) {
+	l := mailx.LoggerFromContext(context.Background())
+	if l == nil {
+		t.Fatal("default logger should not be nil")
+	}
+	// 不应 panic
+	l.Debugf(context.Background(), "noop")
+	l.Infof(context.Background(), "noop")
+	l.Warnf(context.Background(), "noop")
+	l.Errorf(context.Background(), "noop")
+}
+
+func TestSetLoggerNilIgnored(t *testing.T) {
+	m := mailx.NewManager()
+	m.SetLogger(nil) // 不应 panic
+	m.SetLogger(recordingLogger{})
+}