如何在 Ionic 3 中模拟 ModalController

Question

模拟

export class ModalControllerMock {
    public create(param1,param2) {
        let rtn: Object = {};
        rtn['present'] = (() => true);
        return rtn;
    }; };

生产代码：

 someFunc() {
        let modal = this.modalController.create(myComp, {
            stuff:stuff
        });
        modal.present();
    }

错误

TypeError: undefined is not an object (evalating 'modal.present') in src/test.ts（第 61262 行）

模态控制器实现

https://github.com/ionic-team/ionic/blob/master/src/components/modal/modal-controller.ts

Answer 1

找到解决办法：

在 mocks.ts 中

import {ModalController} from "ionic-angular";
import { mockApp, mockConfig, mockDeepLinker } from 'ionic-angular/util/mock-providers';

export class ModalControllerMock {
    constructor() {
        return new ModalController(mockApp(), mockConfig(), mockDeepLinker());
    }
};

在规范文件中

spyOn(modalControllerMock, "create").and.callThrough();