feature(usb):add businesserror case

Signed-off-by: Nwu-chengwen <wuchengwen4@huawei.com>

usb/usb_standard/src/main/js/test/UsbFunctionsJsunit.test.js

@@ -97,5 +97,21 @@ describe('UsbFunctionsJsFunctionsTest', function () {
     console.info('usb SUB_USB_JS_0340 :  PASS');
   })
 
+  /**
+   * @tc.number    : SUB_USB_JS_1000
+   * @tc.name      : getCurrentFunctions
+   * @tc.desc      : 反向测试 获取当前设备模式
+   */
+  it('SUB_USB_JS_1000', 0, function () {
+    console.info('usb SUB_USB_JS_1000 begin');
+    try {
+      var maskCode = usb.getCurrentFunctions("invalid");
+      console.info('usb case getCurrentFunctions return: ' + maskCode);
+    } catch (err) {
+      console.info('catch err code: ' + err.code + ' message: ' + err.message);
+      expect(err.code).assertEqual(401);
+      console.info('usb SUB_USB_JS_1000 :  PASS');
+    }
+  })
 })
 }