playwright/docs/src/pom.md

145 lines
3.3 KiB
Markdown
Raw Normal View History

2021-01-02 00:17:27 +01:00
---
id: pom
title: "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.
2021-01-02 00:17:27 +01:00
<!-- TOC -->
## Introduction
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**. They create a higher-level API which suits your application.
Page objects **simplify maintenance**. They capture element selectors in one place and create reusable code to avoid
repetition.
## Implementation
Page object models wrap over a Playwright [Page].
```js
// models/Search.js
class SearchPage {
/**
* @param {import('playwright').Page} page
*/
constructor(page) {
this.page = page;
}
async navigate() {
await this.page.goto('https://bing.com');
}
async search(text) {
await this.page.fill('[aria-label="Enter your search term"]', text);
await this.page.press('[aria-label="Enter your search term"]', 'Enter');
}
}
module.exports = { SearchPage };
```
```java
// models/SearchPage.java
package models;
import com.microsoft.playwright;
public class SearchPage {
private final Page page;
public SearchPage(Page page) {
this.page = page;
}
public void navigate() {
page.navigate("https://bing.com");
}
public void search(String text) {
page.fill("[aria-label='Enter your search term']", text);
page.press("[aria-label='Enter your search term']", "Enter");
}
}
```
```python async
# models/search.py
class SearchPage:
def __init__(self, page):
self.page = page
async def navigate(self):
await self.page.goto("https://bing.com")
async def search(self, text):
await self.page.fill('[aria-label="Enter your search term"]', text)
await self.page.press('[aria-label="Enter your search term"]', "Enter")
```
```python sync
# models/search.py
class SearchPage:
def __init__(self, page):
self.page = page
def navigate(self):
self.page.goto("https://bing.com")
def search(self, text):
self.page.fill('[aria-label="Enter your search term"]', text)
self.page.press('[aria-label="Enter your search term"]', "Enter")
```
Page objects can then be used inside a test.
```js
// search.spec.js
const { SearchPage } = require('./models/Search');
// In the test
const page = await browser.newPage();
const searchPage = new SearchPage(page);
await searchPage.navigate();
await searchPage.search('search query');
```
```java
import models.SearchPage;
import com.microsoft.playwright.*;
...
// In the test
Page page = browser.newPage();
SearchPage searchPage = new SearchPage(page);
searchPage.navigate();
searchPage.search("search query");
```
```python async
# test_search.py
from models.search import SearchPage
# in the test
page = await browser.new_page()
search_page = SearchPage(page)
await search_page.navigate()
await search_page.search("search query")
```
```python sync
# test_search.py
from models.search import SearchPage
# in the test
page = browser.new_page()
search_page = SearchPage(page)
search_page.navigate()
search_page.search("search query")
```
### API reference
- [Page]