修改测试中的错误消息

[Akimotorakiyu]

Checklist

• [x] npm test passes
• [x] tests and/or benchmarks are included
• [ ] documentation is changed or added
• [ ] commit message follows commit guidelines

Affected core subsystem(s)

mongodb 4.0.4 node 10.13.0

from :"must pass name of collection to create" to: "collection name has invalid type null"

Description of change

from :"must pass name of collection to create" to: "collection name has invalid type null"

[Akimotorakiyu]

神奇！mongo 4.04新版本的报错消息和以前的不一样！！！

有办法可以拿到mongo的版本吗？以便做判断是用断言。

[brickyang]

不如就判断 Error 好了，可以不用检查错误说明。