TypeScript + Protractor：forEach循环中的webdriver操作问题

Question

我正在尝试删除应用中的一些重复的联系人（CafeTownsend）。这些元素在转发器中，下面是我用来删除联系人的功能。它没有正确执行浏览器操作。

完整项目@ ProtractorTest

方法：deleteAccount

deleteAccount(account: Account): void {

                this.LIST_CONTACT.filter((elem, index) => {
                        return elem.getText().then((text) => {
                                return (text == account.fname + ' ' + account.lname);
                        });
                }).then((filteredAccounts) => {
                        console.log(filteredAccounts.length+" accounts are there with "+account.fname);
                        if (filteredAccounts.length !== 0) {

                                filteredAccounts.forEach((elem,index)=>{
                                    console.log('About to delete the contact');

                                elem.click();
                                this.LNK_DELETE_CONTACT.click();
                                browser.switchTo().alert().accept();

                                });
                        }else{
                                console.error(new Error('No such contact to delete'));
                        }
                });


        }

控制台输出

TypeScriptProject>protractor ConvertedJSFiles\config\config.js
[09:23:57] I/hosted - Using the selenium server at http://localhost:4444/wd/hub
[09:23:57] I/launcher - Running 1 instances of WebDriver
Started
**********
2 accounts are there with Jimmy
About to delete the contact
About to delete the contact
.**

Pending:

1) Cintact creation should check if contact is created
  Temporarily disabled with xit


2) Cintact creation should delete the selected contact
  Temporarily disabled with xit

3 specs, 0 failures, 2 pending specs
Finished in 18.523 seconds
[09:24:39] I/launcher - 0 instance(s) of WebDriver still running
[09:24:39] I/launcher - chrome #01 passed

Answer 1

我能够为此问题提供解决方法，如下所示。

deleteSingleAccount(account: Account): void {

                let filteredAccounts = this.LIST_CONTACT.filter((elem, index) => {
                        return elem.getText().then((text) => {
                                return (text == account.fname + ' ' + account.lname);
                        });
                })

                filteredAccounts.count().then((count) => {
                        console.log(count+' is the new count')
                        for (let i = 1; i <= count; i++) {
                                filteredAccounts.get(count-i).click();
                                this.LNK_DELETE_CONTACT.click();
                                browser.wait(EC.alertIsPresent,3000);
                                browser.switchTo().alert().accept();
                        }
                });

        }