angular.module('myApp')
  .config(function ($provide) {

    $provide.decorator('$log',['$delegate',function($delegate) {
      var _debug = $delegate.debug;
      $delegate.debug = function() {
        var args = [].slice.call(arguments);

        // Do some custom stuff

        window.console.info('inside delegated method!');
        _debug.apply(null,args);
      };
      return $delegate
    }]);

  });

请注意,这基本上覆盖了$log.debug()方法,然后在执行一些自定义操作后调用它.在我的应用程序中这是有效的,我看到’内部委托方法！’控制台中的消息.但在我的测试中,我没有得到那个输出.@H_403_4@

我该如何测试我的装饰功能？
具体来说,我如何注入我的装饰器,以便它实际装饰我的$log模拟实现(见下文)？@H_403_4@

这是我目前的测试(摩卡/柴,但这不是真正相关)：@H_403_4@

describe('Log Decorator',function () {
  var MockNativeLog;
  beforeEach(function() {
    MockNativeLog = {
      debug: chai.spy(function() { window.console.log("\nmock debug call\n"); })
    };
  });

  beforeEach(angular.mock.module('myApp'));

  beforeEach(function() {
    angular.mock.module(function ($provide) {
      $provide.value('$log',MockNativeLog);
    });
  });

  describe('The logger',function() {
    it('should go through the delegate',inject(function($log) {
      // this calls my mock (above),but NOT the $log decorator
      // how do I get the decorator to delegate the $log module??
      $log.debug();
      MockNativeLog.debug.should.have.been.called(1);
    }));
  });
});