const express = require('express'); const path = require('path'); const assert = require('assert'); const { Builder } = require('lanthan'); const { Key, By } = require('selenium-webdriver'); const newApp = () => { let app = express(); app.get('/', (req, res) => { res.send(` `); }); return app; }; describe("scroll test", () => { const port = 12321; let http; let lanthan; let webdriver; let body; before(async() => { http = newApp().listen(port); lanthan = await Builder .forBrowser('firefox') .spyAddon(path.join(__dirname, '..')) .build(); webdriver = lanthan.getWebDriver(); }); after(async() => { if (lanthan) { await lanthan.quit(); } if (http) { http.close(); } }); beforeEach(async() => { await webdriver.navigate().to(`http://127.0.0.1:${port}`); body = await webdriver.findElement(By.css('body')); }); it('scrolls up by k', async () => { await body.sendKeys('j'); let pageYOffset = await webdriver.executeScript(() => window.pageYOffset); assert.equal(pageYOffset, 64); }); it('scrolls down by j', async () => { await webdriver.executeScript(() => window.scrollTo(0, 200)); await body.sendKeys('k'); let pageYOffset = await webdriver.executeScript(() => window.pageYOffset); assert.equal(pageYOffset, 136); }); it('scrolls left by h', async () => { await webdriver.executeScript(() => window.scrollTo(100, 100)); await body.sendKeys('h'); let pageXOffset = await webdriver.executeScript(() => window.pageXOffset); assert.equal(pageXOffset, 36); }); it('scrolls left by l', async () => { await webdriver.executeScript(() => window.scrollTo(100, 100)); await body.sendKeys('l'); let pageXOffset = await webdriver.executeScript(() => window.pageXOffset); assert.equal(pageXOffset, 164); }); it('scrolls top by gg', async () => { await webdriver.executeScript(() => window.scrollTo(0, 100)); await body.sendKeys('g', 'g'); let pageYOffset = await webdriver.executeScript(() => window.pageYOffset); assert.equal(pageYOffset, 0); }); it('scrolls bottom by G', async () => { await webdriver.executeScript(() => window.scrollTo(0, 100)); await body.sendKeys(Key.SHIFT, 'g'); let pageYOffset = await webdriver.executeScript(() => window.pageYOffset); assert(pageYOffset > 5000); }); it('scrolls bottom by 0', async () => { await webdriver.executeScript(() => window.scrollTo(0, 100)); await body.sendKeys(Key.SHIFT, '0'); let pageXOffset = await webdriver.executeScript(() => window.pageXOffset); assert(pageXOffset === 0); }); it('scrolls bottom by $', async () => { await webdriver.executeScript(() => window.scrollTo(0, 100)); await body.sendKeys(Key.SHIFT, '$'); let pageXOffset = await webdriver.executeScript(() => window.pageXOffset); assert(pageXOffset > 5000); }); it('scrolls bottom by ', async () => { await webdriver.executeScript(() => window.scrollTo(0, 1000)); await body.sendKeys(Key.CONTROL, 'u'); let pageHeight = await webdriver.executeScript(() => window.document.documentElement.clientHeight); let pageYOffset = await webdriver.executeScript(() => window.pageYOffset); assert(Math.abs(pageYOffset - (1000 - Math.floor(pageHeight / 2))) < 5); }); it('scrolls bottom by ', async () => { await webdriver.executeScript(() => window.scrollTo(0, 1000)); await body.sendKeys(Key.CONTROL, 'd'); let pageHeight = await webdriver.executeScript(() => window.document.documentElement.clientHeight); let pageYOffset = await webdriver.executeScript(() => window.pageYOffset); assert(Math.abs(pageYOffset - (1000 + Math.floor(pageHeight / 2))) < 5); }); it('scrolls bottom by ', async () => { await webdriver.executeScript(() => window.scrollTo(0, 1000)); await body.sendKeys(Key.CONTROL, 'b'); let pageHeight = await webdriver.executeScript(() => window.document.documentElement.clientHeight); let pageYOffset = await webdriver.executeScript(() => window.pageYOffset); assert(Math.abs(pageYOffset - (1000 - pageHeight)) < 5); }); it('scrolls bottom by ', async () => { await webdriver.executeScript(() => window.scrollTo(0, 1000)); await body.sendKeys(Key.CONTROL, 'f'); let pageHeight = await webdriver.executeScript(() => window.document.documentElement.clientHeight); let pageYOffset = await webdriver.executeScript(() => window.pageYOffset); assert(Math.abs(pageYOffset - (1000 + pageHeight)) < 5); }); });