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编写测试

简介​

Playwright 断言是专门为动态 Web 创建的。检查会自动重试，直到满足必要的条件。Playwright 内置了自动等待功能，这意味着它会等待元素可操作后再执行操作。Playwright 提供了 assertThat 重载来编写断言。

请看下面的示例测试，了解如何使用 Web 优先断言、定位器和选择器编写测试。

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 提供了 assertThat 重载，它将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 自动等待和重试能力的核心部分。定位器代表了一种在任何时刻查找页面上元素的方法，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 role 文本，测试 ID 等等。在此深入指南中了解有关可用定位器以及如何选择定位器的更多信息。

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，以确保它们互不干扰。

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

下一步​