跳至主要内容

编写测试

简介​

Playwright断言是专为动态网页设计的。检查会自动重试，直到满足必要条件为止。Playwright内置了自动等待功能，意味着在执行操作前会等待元素变为可操作状态。Playwright提供了assertThat重载方法来编写断言。

查看下面的示例测试，了解如何使用基于网页的断言、定位器和选择器来编写测试。

package org.example;

import java.util.regex.Pattern;
import com.microsoft.playwright.*;
import com.microsoft.playwright.options.AriaRole;

import static com.microsoft.playwright.assertions.PlaywrightAssertions.assertThat;

public class App {
    public static void main(String[] args) {
        try (Playwright playwright = Playwright.create()) {
            Browser browser = playwright.chromium().launch();
            Page page = browser.newPage();
            page.navigate("http://playwright.dev");

            // Expect a title "to contain" a substring.
            assertThat(page).hasTitle(Pattern.compile("Playwright"));

            // create a locator
            Locator getStarted = page.getByRole(AriaRole.LINK, new Page.GetByRoleOptions().setName("Get Started"));

            // Expect an attribute "to be strictly equal" to the value.
            assertThat(getStarted).hasAttribute("href", "/docs/intro");

            // Click the get started link.
            getStarted.click();

            // Expects page to have a heading with the name of Installation.
            assertThat(page.getByRole(AriaRole.HEADING,
               new Page.GetByRoleOptions().setName("Installation"))).isVisible();
        }
    }
}

断言​

Playwright提供了assertThat重载方法，这些方法会等待直到满足预期条件。

import java.util.regex.Pattern;
import static com.microsoft.playwright.assertions.PlaywrightAssertions.assertThat;

assertThat(page).hasTitle(Pattern.compile("Playwright"));

定位器​

Locators 是 Playwright 自动等待和重试能力的核心部分。定位器表示一种随时在页面上查找元素的方式，并用于对元素执行操作，如 .click .fill 等。自定义定位器可以通过 Page.locator() 方法创建。

import static com.microsoft.playwright.assertions.PlaywrightAssertions.assertThat;

Locator getStarted = page.locator("text=Get Started");

assertThat(getStarted).hasAttribute("href", "/docs/intro");
getStarted.click();

Playwright支持多种不同的定位器，如role、text、test id等。了解更多可用的定位器以及如何选择，请参阅这份深入指南。

import static com.microsoft.playwright.assertions.PlaywrightAssertions.assertThat;

assertThat(page.locator("text=Installation")).isVisible();

测试隔离​

Playwright 有一个称为 BrowserContext 的概念，它是一个内存中的独立浏览器配置文件。建议为每个测试创建一个新的 BrowserContext，以确保它们不会相互干扰。

Browser browser = playwright.chromium().launch();
BrowserContext context = browser.newContext();
Page page = context.newPage();

下一步​