[英]Jest - expect(…).toContainEqual is not a function
I am using Jest to test my Node.JS application and when I run my tests, some built-in functions don't work, it seems like they are not defined. 我正在使用Jest测试我的Node.JS应用程序,当我运行我的测试时,一些内置函数不起作用,似乎它们没有被定义。 For instance,
toContainEqual
and toBeInstanceOf
. 例如,
toContainEqual
和toBeInstanceOf
。
Here is example of my code: 这是我的代码示例:
it('should delete DB entry', () => query(url, queryString)
.then(res => res.json()
.then(() => db.collection('exercises').find({}).toArray()))
.then(res => expect(res).toContainEqual(originalExercise)))
And the error I'm getting: 而我得到的错误:
TypeError: expect(...).toContainEqual is not a function
But the other functions (like toEqual
, toBeTruthy
) work fine though. 但其他功能(如
toEqual
, toBeTruthy
)工作正常。
I am using Jest v15.1.1 (according to jest -v
). 我正在使用Jest v15.1.1(根据
jest -v
)。
How can I deal with it? 我怎么处理它?
toContainEqual
and toBeInstanceOf
is NOT included in v15.1.1 yet. toContainEqual
和toBeInstanceOf
不包括在v15.1.1呢。 To use these 2 matchers, you need to install jest@15.2.0-alpha.c681f819, or just wait for the next release. 要使用这两个匹配器,您需要安装jest@15.2.0-alpha.c681f819,或者只是等待下一个版本。
According to the Jest code history, toContainEqual
was merged on Sep. 20th ( https://github.com/facebook/jest/pull/1706 ) and toBeInstanceOf
was merged on Sep. 7th ( https://github.com/facebook/jest/pull/1625 ). 根据Jest代码历史记录,
toContainEqual
于9月20日合并( https://github.com/facebook/jest/pull/1706 )并且toBeInstanceOf
于9月7日合并( https://github.com/facebook/开玩笑/拉/ 1625 )。 However, v15.1.1 was released on Sep. 2th. 但是,v15.1.1于9月2日发布。
It seems the API page of Jest should be changed, so that un-released API won't be included. 似乎应该更改Jest的API页面,以便不包含未发布的API。
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