Automate UI testing using the JUnit unit testing framework

Using JUnit to automate UI testing has the following steps: Add dependencies to create a test class, inherit org.junit.Test and write a test method prefixed with test for each use case. Use a library (such as Selenium) to perform UI interaction using the Assert class. Assertions

Automated UI testing using the JUnit unit testing framework

Automated UI testing is essential to ensure that the application is consistent throughout its life cycle Safety and reliability are crucial. JUnit is a widely used unit testing framework that provides an easy way to automate UI testing.

Steps to automate UI testing using JUnit

1. Dependencies

Add the following dependencies to your project ：

<dependency>
  <groupId>junit</groupId>
  <artifactId>junit</artifactId>
  <version>4.13.2</version>
</dependency>

2. Test class

Create a test class named UiTest, inherited from org.junit.Test:

import org.junit.Test;

public class UiTest {
}

3. Test method

For each test case to be automated, write a method prefixed with test, As shown below:

@Test
public void testLogin() {
  // ...
}

4. UI interaction

Use libraries such as Selenium to perform UI interaction. For example, the following code uses Selenium WebDriver to verify the login button on the login page:

WebDriver driver = new ChromeDriver(); // 创建 Chrome WebDriver
driver.get("http://example.com/login"); // 打开登录页面
Assert.assertTrue(driver.findElement(By.id("login-button")).isDisplayed()); // 检查登录按钮是否可见

5. Assert

Use the Assert class for UI interaction The result is asserted. For example, the following code asserts that the login button exists:

Assert.assertTrue(loginButton.isDisplayed());

Practical Example

Let’s write a simple test case to verify the title of the Facebook login page:

@Test

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