跳至主要内容

编写测试

简介​

Playwright 断言专门针对动态网页而创建。检查会自动重试，直到满足必要条件。Playwright 内置了 自动等待，这意味着它会在执行操作之前等待元素可操作。Playwright 提供 assertThat 重载来编写断言。

请查看下面的示例测试，了解如何使用 Web 首要断言、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("https://playwright.net.cn");

            // 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 assertThat 重载，它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​

定位器 是 Playwright 自动等待和重试功能的核心。定位器代表一种在任何时刻查找页面上的元素(s) 的方式，并用于对元素执行操作，例如 .click .fill 等。可以使用 Page.locator() 方法创建自定义定位器。

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

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

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

Playwright 支持许多不同的定位器，例如 角色 文本、测试 ID 等等。在本 深入指南 中了解更多关于可用定位器以及如何选择定位器的信息。

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

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

测试隔离​

Playwright 具有 BrowserContext 的概念，它是一个内存中隔离的浏览器配置文件。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​