What is Data-Driven Testing with Selenium WebDriver and Java #interviewQuestion

Data-Driven Testing with Selenium WebDriver and Java

Data-driven testing is a technique where test data is separated from the test scripts. This allows for efficient execution of tests with various data sets.

Implementation Steps

1. External Data Source: Prepare your test data in an external source like Excel or CSV. Each row should represent a test scenario with data points like username, password, etc.
2. Java Libraries: Include Selenium WebDriver libraries and a library to read the external data. Apache POI for Excel and OpenCSV for CSV are popular choices.
3. Read Test Data: Write Java code to access the external data source and iterate through each row. Extract the relevant data points for each test case.
4. Test Script Logic: Develop your Selenium test script with placeholders for the data points. During execution, these placeholders will be replaced with the actual data from the external source.
5. Execute Test Cases: Use a loop to iterate through each data set. Within the loop, use the extracted data to perform actions on the web application using Selenium WebDriver.
6. Assertion and Reporting: Implement assertions to verify the expected outcome for each test case. Generate reports based on the test results.

Example: Login Functionality

Imagine an Excel sheet with columns for username and password. You can write a test script that reads each row, enters the username and password in the login form, and verifies successful login or displays an error message for invalid credentials.

Benefits

Data-driven testing offers several advantages:

• Increased Efficiency: Execute tests with various data sets without modifying the test script itself.
• Improved Maintainability: Changes to test data only require updates to the external source, not the test code.
• Enhanced Test Coverage: Easily test with a wider range of scenarios by adding new data sets.

Conclusion

Data-driven testing with Selenium WebDriver and Java is a powerful approach for automating web application testing. It promotes efficient test execution, improves maintainability, and helps achieve comprehensive test coverage.

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