findElement by className in Selenium Java - Test Execution Trace

Test Overview

This test opens a web page, finds a button using its class name, clicks it, and verifies that a confirmation message appears.

Test Code - JUnit with Selenium WebDriver

Selenium Java

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;

public class FindElementByClassNameTest {
    private WebDriver driver;
    private WebDriverWait wait;

    @BeforeEach
    public void setUp() {
        driver = new ChromeDriver();
        wait = new WebDriverWait(driver, 10);
    }

    @Test
    public void testClickButtonByClassName() {
        driver.get("https://example.com/testpage");
        WebElement button = wait.until(ExpectedConditions.presenceOfElementLocated(By.className("submit-btn")));
        button.click();
        WebElement message = wait.until(ExpectedConditions.visibilityOfElementLocated(By.id("confirmation-message")));
        assertEquals("Submission successful", message.getText());
    }

    @AfterEach
    public void tearDown() {
        if (driver != null) {
            driver.quit();
        }
    }
}

Execution Trace - 6 Steps

Step	Action	System State	Assertion	Result
1	Test starts and Chrome browser opens	Chrome browser window is open and ready	-	PASS
2	Navigates to https://example.com/testpage	Page loads with a button having class 'submit-btn' and an empty confirmation message area	-	PASS
3	Waits until element with class name 'submit-btn' is present and finds the button	Button with class 'submit-btn' is located on the page	Element presence verified	PASS
4	Clicks the button found by class name	Button is clicked, triggering submission action	-	PASS
5	Waits until confirmation message with id 'confirmation-message' is visible	Confirmation message area is visible with text 'Submission successful'	Message text equals 'Submission successful'	PASS
6	Test ends and browser closes	Browser window is closed	-	PASS

Failure Scenario

Failing Condition: The button with class name 'submit-btn' is not found on the page

Execution Trace Quiz - 3 Questions

What Selenium method is used to find the button in this test?

A driver.findElement(By.className("submit-btn"))

B driver.findElement(By.id("submit-btn"))

C driver.findElement(By.name("submit-btn"))

D driver.findElement(By.tagName("button"))

Key Result

Always use explicit waits like WebDriverWait with ExpectedConditions to reliably find elements by class name before interacting with them.