nestjs单元测试

出现的问题

1. You are trying to import a file after the Jest environment has been torn down.
   或者 TypeError: Right-hand side of ‘instanceof’ is not an object

在最外层加上 jest.useFakeTimers();

2. Timeout - Async callback was not invoked within the 5000 ms timeout specified by jest.setTimeout.Timeout - Async callback was not invoked within the 5000 ms timeout specified by jest.setTimeout.Error:

超时错误
在最外层加上 jest.setTimeout(1000000);