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Page Object Models

Large test suites can be structured to optimize ease of authoring and maintenance. Page object models are one such approach to structure your test suite.

A page object represents a part of your web application. An e-commerce web application might have a home page, a listings page and a checkout page. Each of them can be represented by page object models.

Page objects simplify authoring by creating a higher-level API which suits your application and simplify maintenance by capturing element selectors in one place and create reusable code to avoid repetition.

Implementation

Page object models wrap over a Playwright Page.

using System.Threading.Tasks;
using Microsoft.Playwright;

namespace BigEcommerceApp.Tests.Models;

public class SearchPage
{
private readonly IPage _page;
private readonly ILocator _searchTermInput;

public SearchPage(IPage page)
{
_page = page;
_searchTermInput = page.Locator("[aria-label='Enter your search term']");
}

public async Task GotoAsync()
{
await _page.GotoAsync("https://bing.com");
}

public async Task SearchAsync(string text)
{
await _searchTermInput.FillAsync(text);
await _searchTermInput.PressAsync("Enter");
}
}

Page objects can then be used inside a test.

using BigEcommerceApp.Tests.Models;

// in the test
var page = new SearchPage(await browser.NewPageAsync());
await page.GotoAsync();
await page.SearchAsync("search query");