JSON test data in Selenium Java - Test Execution Trace

Test Overview

This test reads user login data from a JSON file and verifies the login functionality on a web page using Selenium in Java.

Test Code - TestNG 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.testng.Assert;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.File;

public class LoginTestWithJson {
    WebDriver driver;
    JsonNode testData;

    @BeforeClass
    public void setUp() throws Exception {
        System.setProperty("webdriver.chrome.driver", "path/to/chromedriver");
        driver = new ChromeDriver();
        driver.manage().window().maximize();

        ObjectMapper mapper = new ObjectMapper();
        testData = mapper.readTree(new File("src/test/resources/loginData.json"));
    }

    @Test
    public void testLogin() {
        String url = testData.get("url").asText();
        String username = testData.get("credentials").get("username").asText();
        String password = testData.get("credentials").get("password").asText();

        driver.get(url);

        WebElement usernameField = driver.findElement(By.id("username"));
        WebElement passwordField = driver.findElement(By.id("password"));
        WebElement loginButton = driver.findElement(By.id("loginBtn"));

        usernameField.sendKeys(username);
        passwordField.sendKeys(password);
        loginButton.click();

        WebElement welcomeMessage = driver.findElement(By.id("welcomeMsg"));
        Assert.assertTrue(welcomeMessage.isDisplayed(), "Welcome message should be visible after login");
        Assert.assertEquals(welcomeMessage.getText(), "Welcome, " + username + "!");
    }

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

Execution Trace - 8 Steps

Step	Action	System State	Assertion	Result
1	Test setup: ChromeDriver initialized and JSON test data loaded from file	Browser window opened and maximized; JSON data with URL and credentials loaded	-	PASS
2	Browser navigates to URL from JSON data	Browser displays login page at specified URL	-	PASS
3	Find username, password fields and login button by their IDs	All elements located successfully on the login page	-	PASS
4	Enter username and password from JSON data into input fields	Username and password fields filled with test data	-	PASS
5	Click login button	Login form submitted; page transitions to user dashboard	-	PASS
6	Find welcome message element by ID	Welcome message element present on dashboard page	-	PASS
7	Assert welcome message is displayed and text matches expected username	Welcome message visible with text 'Welcome, testuser!'	Assert.assertTrue(welcomeMessage.isDisplayed()) and Assert.assertEquals(welcomeMessage.getText(), 'Welcome, testuser!')	PASS
8	Test teardown: Browser closed	Browser window closed, WebDriver quit	-	PASS

Failure Scenario

Failing Condition: If the JSON file path is incorrect or JSON structure is invalid, or if elements are not found on the page

Execution Trace Quiz - 3 Questions

What is the source of the username and password used in the test?

A They are entered manually during test execution

B They are read from a JSON file before the test runs

C They are hardcoded in the test code

D They are fetched from a database during the test

Key Result

Using JSON test data separates test logic from test data, making tests easier to maintain and reuse with different inputs.