Automated Testing Utilizing TestNG and Excel Spreadsheets for Data-Centric Test Cases
In the world of software testing, repetitive test cases with varying input data can be efficiently handled using TestNG's Data-Driven Testing. This approach is particularly useful when automating login tests with Selenium. Here's a step-by-step guide on how to perform data-driven testing with TestNG using an Excel file for login details in a Selenium test case.
Preparation
- Prepare an Excel file (e.g., ) with columns like and , and fill rows with various login credentials.
Dependencies
Add dependencies to your Maven for Apache POI (to handle Excel files), Selenium, and TestNG:
Reading Data from Excel
Create a utility method to read data from the Excel file and return it as an Object[][] for TestNG:
```java public Object[][] getLoginDataFromExcel() throws IOException { FileInputStream file = new FileInputStream(new File("path/to/loginData.xlsx")); Workbook workbook = WorkbookFactory.create(file); Sheet sheet = workbook.getSheetAt(0); int rowCount = sheet.getPhysicalNumberOfRows() - 1; // excluding header Object[][] data = new Object[rowCount][2];
} ```
Implementing Data-Driven Testing with TestNG
- Implement a TestNG method that reads the Excel file and returns the login credential sets as an Object array.
- Write a TestNG test method that takes username and password parameters from the and uses Selenium WebDriver to perform login tests.
```java @Test(dataProvider = "loginData") public void testLogin(String username, String password) { WebDriver driver = new ChromeDriver(); driver.get("https://your-login-page-url"); driver.findElement(By.id("usernameField")).sendKeys(username); driver.findElement(By.id("passwordField")).sendKeys(password); driver.findElement(By.id("loginButton")).click();
} ```
By following these steps, you can automate login tests with TestNG and Selenium, allowing the same test to run multiple times with different credentials read from the Excel file, facilitating data-driven testing. For a complete working example and sample code, see the tutorial "Data Driven Testing With TestNG and Excel" from GeeksforGeeks, which provides step-by-step guidance including reading Excel data with Apache POI, setting up TestNG , and integrating with Selenium.
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