Question

我正在尝试以角度方式运行测试，但显然出现了类似以下错误：

TypeError: _this.handler.handle is not a function
    at MergeMapSubscriber.project (http://localhost:9876/_karma_webpack_/webpack:/node_modules/@angular/common/esm5/http.js:1464:80)
    at MergeMapSubscriber.webpackJsonp../node_modules/rxjs/_esm5/operators/mergeMap.js.MergeMapSubscriber._tryNext (http://localhost:9876/_karma_webpack_/webpack:/node_modules/rxjs/_esm5/operators/mergeMap.js:128:1)
    at MergeMapSubscriber.webpackJsonp../node_modules/rxjs/_esm5/operators/mergeMap.js.MergeMapSubscriber._next (http://localhost:9876/_karma_webpack_/webpack:/node_modules/rxjs/_esm5/operators/mergeMap.js:118:1)
    at MergeMapSubscriber.webpackJsonp../node_modules/rxjs/_esm5/Subscriber.js.Subscriber.next (http://localhost:9876/_karma_webpack_/webpack:/node_modules/rxjs/_esm5/Subscriber.js:92:1)
    at ScalarObservable.webpackJsonp../node_modules/rxjs/_esm5/observable/ScalarObservable.js.ScalarObservable._subscribe (http://localhost:9876/_karma_webpack_/webpack:/node_modules/rxjs/_esm5/observable/ScalarObservable.js:51:1)
    at ScalarObservable.webpackJsonp../node_modules/rxjs/_esm5/Observable.js.Observable._trySubscribe (http://localhost:9876/_karma_webpack_/webpack:/node_modules/rxjs/_esm5/Observable.js:172:1)
    at ScalarObservable.webpackJsonp../node_modules/rxjs/_esm5/Observable.js.Observable.subscribe (http://localhost:9876/_karma_webpack_/webpack:/node_modules/rxjs/_esm5/Observable.js:160:1)
    at MergeMapOperator.webpackJsonp../node_modules/rxjs/_esm5/operators/mergeMap.js.MergeMapOperator.call (http://localhost:9876/_karma_webpack_/webpack:/node_modules/rxjs/_esm5/operators/mergeMap.js:92:1)
    at Observable.webpackJsonp../node_modules/rxjs/_esm5/Observable.js.Observable.subscribe (http://localhost:9876/_karma_webpack_/webpack:/node_modules/rxjs/_esm5/Observable.js:157:1)
    at FilterOperator.webpackJsonp../node_modules/rxjs/_esm5/operators/filter.js.FilterOperator.call (http://localhost:9876/_karma_webpack_/webpack:/node_modules/rxjs/_esm5/operators/filter.js:61:1)

我没有在测试中进行任何更改，但在组件中确实添加了新的导入：import {Router} from "@angular/router";，当然，在测试中我确实在导入中添加了RouterModule。我该怎么办？

Answer 1

问题是我没有模拟组件中使用的方法。正确模拟确实可以解决问题。

Answer 2

删除node_modules文件夹和在命令中执行： npm install

角度类型错误：_this.handler.handle不是函数

2 个答案: