Warum toBe() funktioniert nicht im Test - Winkelmesser e2e

Question

Ich führe meinen Test, aber ich bekomme die folgende Nachricht. Kann mir jemand helfen, das zu lösen? Und wie kann ich den Text schreiben, zB ist das Passwort falsch? Alert und console.log funktioniert nicht für mich.

mein Code: app.e2e-spec.ts

import { FobosFrontendBackofficePage } from './app.po'; 
import { browser, by, element, promise, ElementFinder, Key, protractor } from 'protractor'; 
import {ActionSequence, By, Capabilities, Command as WdCommand, FileDetector, ICommandName, Options, Session, TargetLocator, TouchSequence, until, WebDriver, WebElement, WebElementPromise} from 'selenium-webdriver'; 
import {extend as extendWD, ExtendedWebDriver} from 'webdriver-js-extender'; 
import {promise as wdpromise} from 'selenium-webdriver'; 
import {error as wderror} from 'selenium-webdriver'; 
import {Response} from '@angular/http'; 

describe('Frontend backoffice App',() => { 

let page: FobosFrontendBackofficePage; 

beforeEach(() => { 
page = new FobosFrontendBackofficePage(); 

}); 

it('should navigate to browser',() => { 
page.navigateTo(); 

}); 

it('Login panel',() => { 
var login = element(by.name('username')).sendKeys('Test'); 
var passwordField = element(by.css('input[ng-reflect-name="password"]')).sendKeys('assadsa'); 
var buttonSubmit = element(by.buttonText('Dalej')).click(); 

}); 

it('Result test',() => { 

var result = element(by.className('msg')); 

if(result != null){ 
    expect(result.isDisplayed().toBe(true)); 

} 
else{ 
    expect(result.isDisplayed().toBe(false)); 
} 
}); 
}); 

mein Protokoll mit Lauftest:

[15:49:14] I/update - chromedriver: unzipping chromedriver_2.32.zip 
[15:49:14] I/update - chromedriver: chromedriver_2.32.exe up to date 
[15:49:14] I/launcher - Running 1 instances of WebDriver 
[15:49:14] I/direct - Using ChromeDriver directly... 
[15:49:18] E/launcher - Error: TSError: ⨯ Unable to compile TypeScript 
e2e\app.e2e-spec.ts (41,31): Property 'toBe' does not exist on type 'Promise<boolean>'. (2339) 
e2e\app.e2e-spec.ts (47,31): Property 'toBe' does not exist on type 'Promise<boolean>'. (2339) 

Answer 1

Du machst das falsch es.

expect(result.isDisplayed()).toBe(true)