Question

因此，当我查看报道报告时，我会通过karma-coverage-instanbul-reporter跟踪单元测试覆盖率：

.map(res => res.json())

我所有提供商的一部分从未在测试中受到影响。但我确实对这些提供商进行了测试，并且正在验证我是否收到了回复。

以下是我正在测试的函数的示例：

public getCampaigns(): Observable<CampaignsResponse> {
  return this.http.get(this.campaignsUrl).map(res => res.json());
}

以下是此功能的测试：

describe("getCampaigns", () => {
  it("should return an Observable<CampaignsResponse>",
    inject([CampaignsService, MockBackend], (service: CampaignsService, mockBackend: MockBackend) => {
      // arrange
      mockBackend.connections.subscribe((connection: any) => {
        connection.mockBackend(new Response(new ResponseOptions({
          body: JSON.stringify(mockCampaigns),
        })));
      });

      // act
      service.getCampaigns().subscribe((campaigns) => {
        // assert
        expect(campaigns.campaigns.length).toEqual(1);
   expect(campaigns.campaigns[0].id).toEqual(mockCampaigns.campaigns[0].id);
      expect(campaigns.campaigns[0].channelID).toEqual(mockCampaigns.campaigns[0].channelID);
      expect(campaigns.campaigns[0].name).toEqual(mockCampaigns.campaigns[0].name);
      expect(campaigns.campaigns[0].active).toEqual(mockCampaigns.campaigns[0].active);
      expect(campaigns.campaigns[0].createdAt).toEqual(mockCampaigns.campaigns[0].createdAt);
      expect(campaigns.campaigns[0].updatedAt).toEqual(mockCampaigns.campaigns[0].updatedAt);
    });
}));

}）;

但是根据我的测试覆盖率，res.json（）永远不会在地图功能中被击中。

有没有人对这可能是什么有任何想法？ Coverage报告可能是错误的还是将代码错误地映射回TypeScript？

无法弄清楚为什么res.json（）没有在单位测试覆盖范围中被命中，Angular

0 个答案: