113 lines
5.2 KiB
Markdown
113 lines
5.2 KiB
Markdown
---
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id: pom
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title: "Page Object Models"
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---
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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.
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- [Introduction](#introduction)
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- [Implementation](#implementation)
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## Introduction
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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.
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Page objects **simplify authoring**. They create a higher-level API which suits your application.
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Page objects **simplify maintenance**. They capture element selectors in one place and create reusable code to avoid repetition.
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## Implementation
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Page object models wrap over a Playwright [Page].
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```js
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// models/Search.js
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class SearchPage {
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constructor(page) {
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this.page = page;
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}
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async navigate() {
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await this.page.goto('https://bing.com');
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}
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async search(text) {
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await this.page.fill('[aria-label="Enter your search term"]', text);
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await this.page.keyboard.press('Enter');
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}
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}
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module.exports = { SearchPage };
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```
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Page objects can then be used inside a test.
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```js
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// search.spec.js
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const { SearchPage } = require('./models/Search');
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// In the test
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const page = await browser.newPage();
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const searchPage = new SearchPage(page);
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await searchPage.navigate();
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await searchPage.search('search query');
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```
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### API reference
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- [Page]
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[Playwright]: api/class-playwright.md "Playwright"
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[Browser]: api/class-browser.md "Browser"
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[BrowserContext]: api/class-browsercontext.md "BrowserContext"
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[Page]: api/class-page.md "Page"
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[Frame]: api/class-frame.md "Frame"
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[ElementHandle]: api/class-elementhandle.md "ElementHandle"
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[JSHandle]: api/class-jshandle.md "JSHandle"
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[ConsoleMessage]: api/class-consolemessage.md "ConsoleMessage"
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[Dialog]: api/class-dialog.md "Dialog"
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[Download]: api/class-download.md "Download"
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[Video]: api/class-video.md "Video"
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[FileChooser]: api/class-filechooser.md "FileChooser"
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[Keyboard]: api/class-keyboard.md "Keyboard"
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[Mouse]: api/class-mouse.md "Mouse"
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[Touchscreen]: api/class-touchscreen.md "Touchscreen"
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[Request]: api/class-request.md "Request"
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[Response]: api/class-response.md "Response"
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[Selectors]: api/class-selectors.md "Selectors"
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[Route]: api/class-route.md "Route"
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[WebSocket]: api/class-websocket.md "WebSocket"
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[TimeoutError]: api/class-timeouterror.md "TimeoutError"
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[Accessibility]: api/class-accessibility.md "Accessibility"
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[Worker]: api/class-worker.md "Worker"
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[BrowserServer]: api/class-browserserver.md "BrowserServer"
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[BrowserType]: api/class-browsertype.md "BrowserType"
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[Logger]: api/class-logger.md "Logger"
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[ChromiumBrowser]: api/class-chromiumbrowser.md "ChromiumBrowser"
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[ChromiumBrowserContext]: api/class-chromiumbrowsercontext.md "ChromiumBrowserContext"
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[ChromiumCoverage]: api/class-chromiumcoverage.md "ChromiumCoverage"
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[CDPSession]: api/class-cdpsession.md "CDPSession"
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[FirefoxBrowser]: api/class-firefoxbrowser.md "FirefoxBrowser"
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[WebKitBrowser]: api/class-webkitbrowser.md "WebKitBrowser"
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[Array]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array "Array"
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[Buffer]: https://nodejs.org/api/buffer.html#buffer_class_buffer "Buffer"
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[ChildProcess]: https://nodejs.org/api/child_process.html "ChildProcess"
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[Element]: https://developer.mozilla.org/en-US/docs/Web/API/element "Element"
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[Error]: https://nodejs.org/api/errors.html#errors_class_error "Error"
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[Evaluation Argument]: ./core-concepts.md#evaluationargument "Evaluation Argument"
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[Map]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map "Map"
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[Object]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object "Object"
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[Promise]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise "Promise"
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[RegExp]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp "RegExp"
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[Serializable]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify#Description "Serializable"
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[UIEvent.detail]: https://developer.mozilla.org/en-US/docs/Web/API/UIEvent/detail "UIEvent.detail"
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[URL]: https://nodejs.org/api/url.html "URL"
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[USKeyboardLayout]: ../src/usKeyboardLayout.ts "USKeyboardLayout"
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[UnixTime]: https://en.wikipedia.org/wiki/Unix_time "Unix Time"
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[boolean]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type "Boolean"
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[function]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function "Function"
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[iterator]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols "Iterator"
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[null]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/null "null"
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[number]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type "Number"
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[origin]: https://developer.mozilla.org/en-US/docs/Glossary/Origin "Origin"
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[selector]: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Selectors "selector"
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[Readable]: https://nodejs.org/api/stream.html#stream_class_stream_readable "Readable"
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[string]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type "string"
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[xpath]: https://developer.mozilla.org/en-US/docs/Web/XPath "xpath"
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