Angular2 RC4测试：未捕获的（在承诺）：类型错误：testing_1.expect（...）toBeAnInstanceOf不是一个函数

Question

这是我在Angular2测试：

it('should initialize without DI service', 
     async(inject([TestComponentBuilder], (tcb: TestComponentBuilder) => { 
      var template = '<component></component>'; 
      return tcb.overrideTemplate(TestComponent, template) 
       .createAsync(TestComponent) 
       .then((fixture) => { 
       expect(fixture.debugElement.children[0].componentInstance).toBeAnInstanceOf(ComponentType); 
       expect(fixture.debugElement.children[0].componentInstance.state).toBeNull(); 
       }); 
     }))); 

它引发以下错误：

Uncaught (in promise): TypeError: testing_1.expect(...).toBeAnInstanceOf is not a function

它在Angular2 RC2中正常工作，直到我更新到RC4。

Answer 1

由于这一直无人接听了很长时间，这等岗位可能对未来有所帮助：

Uncaught TypeError: ctorParameters.map is not a function