asynchronous - Chai测试.then内部是否抛出错误

Question

当来自salesforce的查询返回为空数组时，我们将其捕获在.then()内部，并引发错误，我可以在console.log中查看并在.catch()内部进行查看。但是，我很难测试该错误消息。

我已经尝试了chai-pro-promise和to.eventually.equal('some string')，但是作为AssertionError回来了:期望未定义等于'当前时段没有 Activity '。

cosnt campaignMember = {

  getCampaignMembers: async () => {
    await login();
    return conn.sobject('CampaignMember')
      .select('*')
      .then((result) => {
        if (!result[0]) {
          throw Error('No campaigns for current period.');
        }
        return result;
      })
      .catch((err) => {
        log.error(`Could not get paid current campaigns ${err}`);
      });
  },
}
module.exports = campaignMember

测试

it('should pass', async () => {
    await otherAsyncMethod();
    await expect(campaignMember.getCampaignMembers(currentParent)).to.eventually.equal('No campaigns for current period.');
  });

我希望能够测试错误消息本身。

Answer 1

我通过另一个stackoverflow文章找到了一个解决方案，该文章带有指向github问题评论的链接。 https://github.com/chaijs/chai/issues/882#issuecomment-322131680
我还必须从异步getCampaignMembers方法中删除捕获。

cosnt campaignMember = {

  getCampaignMembers: async () => {
    await login();
    return conn.sobject('CampaignMember')
      .select('*')
      .then((result) => {
        if (!result[0]) {
          throw Error('No campaigns for current period.');
        }
        return result;
      })
      .catch(err => throw Error(err));
  },
}
module.exports = campaignMember

测试

it('should pass', async () => {
  await otherAsyncMethod();

  await campaignMember. getCampaignMembers(currentParent).catch((err) => {
    expect(err).to.be.an('error').with.property('message', 'Error: No campaigns for current period.');
  });

});