添加测试信息

src/components/button-group/index.ts

@@ -10,6 +10,8 @@ import { t, localeManager } from '../../services/locale';
 import { themeManager } from '../../services/theme';
 import type { ThemeConfig } from '../../themes/types';
 import { IBimComponent } from '../../types/component';
+import type { BimEngine } from '../../bim-engine';
+import { EngineEvents } from '../../types/events';
 
 /**
  * 通用按钮组组件 (BimButtonGroup)
@@ -26,6 +28,8 @@ export class BimButtonGroup implements IBimComponent {
     private unsubscribeLocale: (() => void) | null = null;
     private unsubscribeTheme: (() => void) | null = null;
 
+    protected engine: BimEngine | null = null;
+
     private readonly DEFAULT_ICON = '<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><rect x="3" y="3" width="18" height="18" rx="2" ry="2"></rect></svg>';
 
     constructor(options: ButtonGroupOptions) {
@@ -63,6 +67,18 @@ export class BimButtonGroup implements IBimComponent {
         this.applyStyles();
     }
 
+    public setEngine(engine: BimEngine) {
+        this.engine = engine;
+    }
+
+    protected emit<K extends keyof EngineEvents>(event: K, payload: EngineEvents[K]) {
+        if (this.engine) {
+            this.engine.emit(event, payload);
+        } else {
+            console.warn('[BimButtonGroup] Engine not set, cannot emit event:', event);
+        }
+    }
+
     private initContainer(): void {
         this.container.innerHTML = '';
         this.container.classList.add('bim-btn-group-root');