问题描述
请帮我用jest测试拦截器?
import { Injectable,nestInterceptor,ExecutionContext,CallHandler,RequestTimeoutException } from "@nestjs/common";
import { Observable,throwError,TimeoutError } from "rxjs";
import { catchError,timeout } from "rxjs/operators";
@Injectable()
export class TimeoutInterceptor implements nestInterceptor {
constructor(private readonly interval: number) {}
intercept(_context: ExecutionContext,next: CallHandler): Observable<any> {
if (this.interval > 0) {
return next.handle().pipe(
timeout(this.interval),catchError((error) => {
if (error instanceof TimeoutError) {
return throwError(new RequestTimeoutException(`The operation timed out. `));
}
return throwError(error);
}),);
}
return next.handle();
}
}
解决方法
我曾尝试为这个拦截器编写单元测试,但我不喜欢它:/看:https://gist.github.com/micalevisk/33d793202541f044d8f5bccb81049b94