在Karma Angular Unit Test期间'错误:意外请求'

运行时grunt karma,对其中一个指令的测试在尝试获取模板时失败.我使用ng-html2js作为预处理器.这是我的一些karma.conf.js

plugins: ['karma-chrome-launcher',
          'karma-jasmine',
          'ng-html2js',
          'karma-ng-html2js-preprocessor'],

preprocessors: {
  'app/scripts/directives/**/*.html': 'ng-html2js'
},

ngHtml2JsPreprocessor: {
  moduleName: 'templates'
}

在我的测试中,我有以下内容:

'use strict';

describe('Directive: myDirective', function () {

  // load the directive's module
  beforeEach(module('myApp'));
  beforeEach(module('templates'));

  var element,
    scope;

  beforeEach(inject(function ($rootScope) {
    scope = $rootScope.$new();
  }));

  it('should not show search area initially', inject(function ($compile) {
    element = angular.element('');
    element = $compile(element)(scope);
    scope.$digest();
    expect(element.find('.myClass').hasClass('myClass')).toBe(true);
  }));
});

当我运行测试时,我得到了

Error: Unexpected request: GET /scripts/directives/myDirective/myDirective.html

好像预处理器没有正确地注入模板的javascript版本.

我也尝试使用模板的路径,beforeEach(module(''));但会导致错误,内容如下:

Error: [$injector:modulerr] Failed to instantiate module...

我怎样才能解决这个问题？