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用多重选择测试redux传奇

redux-saga jestjs

Lazar Nikolic · 技术社区 · 6 年前

我有一个传奇与选择功能,应该采取从国家的信息夫妇,并使用他们去到新的网址。

export function* appRedirectToNewTopic() {
  const getCreatingNewTopicError = yield select(getCreatingTopicError);
  const newTopicId = yield select(getNewTopicId);
  const groupId = yield select(getGroupId);
  if (isEmpty(getCreatingNewTopicError)) { // this is lodash isEmpty
    yield put(push(getRouteUrl(routerUrls.TOPIC_CHAT.url, {
      groupId,
      topicId: newTopicId,
    })));
  } // TODO add here when notification is made
}

SAGA测试代码:

describe('appRedirectToNewTopic', () => {
  const action = appCreateNewTopicFinishedAction();
  const generator =
    cloneableGenerator(appRedirectToNewTopic)(action);
  const expectedGroupId = {
    apiGroups: {
      groupInfo: {
        groupInfo: {
          id: 466,
        },
      },
    },
  };
  const expectedTopicId = {
    apiTopics: {
      newTopicId: 22466,
    },
  };
  let topicId;
  let groupId;

  it('should return empty error', () => {
    expect(generator.next().value)
      .toEqual(select(getCreatingTopicError));
  });

  it('should return new topicId', () => {
    topicId = generator.next(expectedTopicId).value;
    expect(topicId)
      .toEqual(select(getNewTopicId));
  });

  it('should return groupId', () => {
    groupId = generator.next(expectedGroupId).value;
    expect(groupId)
      .toEqual(select(getGroupId));
  });

  it('should redirect user to new topic screen', () => {
    expect(generator.next().value)
      .toEqual(put(push(getRouteUrl(routerUrls.TOPIC_CHAT.url, {
        groupId,
        topicId,
      }))));
  });
});

我在中得到的错误应该将用户重定向到新主题,错误是 Expected value to equal: {"@@redux-saga/IO": true, "PUT": {"action": {"payload": {"args": ["/chat/[object Object]/[object Object]"], "method": "push"}, "type": "@@router/CALL_HISTORY_METHOD"}, "channel": null}} Received: undefined

1 回复 | 直到 6 年前

Martin Kadlec 6 年前

传递给下一个方法的值是当前 yield 是应该屈服的,而不是你测试的那个。试试这个:

describe('appRedirectToNewTopic', () => {
  const action = appCreateNewTopicFinishedAction();
  const generator =
    cloneableGenerator(appRedirectToNewTopic)(action);
  const expectedGroupId = {
    apiGroups: {
      groupInfo: {
        groupInfo: {
          id: 466,
        },
      },
    },
  };
  const expectedTopicId = {
    apiTopics: {
      newTopicId: 22466,
    },
  };
  let topicId;
  let groupId;

  it('should return empty error', () => {
    expect(generator.next().value)
      .toEqual(select(getCreatingTopicError));
  });

  it('should return new topicId', () => {
    topicId = generator.next().value;
    expect(topicId)
      .toEqual(select(getNewTopicId));
  });

  it('should return groupId', () => {
    groupId = generator.next(expectedTopicId).value;
    expect(groupId)
      .toEqual(select(getGroupId));
  });

  it('should redirect user to new topic screen', () => {
    expect(generator.next(expectedGroupId).value)
      .toEqual(put(push(getRouteUrl(routerUrls.TOPIC_CHAT.url, {
        groupId,
        topicId,
      }))));
  });
});