findElement by ID in Selenium Java - Test Execution Trace

Test Overview

This test opens a browser, navigates to a sample page, finds a button by its ID, clicks it, and verifies the expected text 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.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 FindElementByIdTest {
    private WebDriver driver;

    @BeforeEach
    public void setUp() {
        driver = new ChromeDriver();
    }

    @Test
    public void testClickButtonById() {
        driver.get("https://example.com/testpage");
        WebElement button = driver.findElement(By.id("submit-btn"));
        button.click();
        WebElement message = driver.findElement(By.id("result-message"));
        assertEquals("Success!", message.getText());
    }

    @AfterEach
    public void tearDown() {
        driver.quit();
    }
}

Execution Trace - 7 Steps

Step	Action	System State	Assertion	Result
1	Test starts and ChromeDriver is initialized	Browser window opens, ready for commands	-	PASS
2	Navigate to URL https://example.com/testpage	Browser displays the test page with a button having ID 'submit-btn'	-	PASS
3	Find element by ID 'submit-btn'	Button element located on the page	Element with ID 'submit-btn' is found	PASS
4	Click the button element	Button is clicked, page updates to show result message	-	PASS
5	Find element by ID 'result-message'	Result message element located on the page	Element with ID 'result-message' is found	PASS
6	Assert that the text of 'result-message' is 'Success!'	Text content of the element is 'Success!'	AssertEquals passes confirming text matches expected	PASS
7	Close the browser and end test	Browser window closes	-	PASS

Failure Scenario

Failing Condition: Element with ID 'submit-btn' is not found on the page

Execution Trace Quiz - 3 Questions

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

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

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

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

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

Key Result

Always use unique and stable IDs for elements you want to find with findElement(By.id) to ensure reliable and fast element location in Selenium tests.