Automation Testing BDD and TDD in Test Automation 2 — Questions and Answers
Question 1: What does BDD stand for in software development methodology?
- Behavior-Driven Development (Correct answer)
- Backend Data Design
- Build-Deploy-Debug
- Binary Decision Diagram
Correct answer: Behavior-Driven Development
BDD stands for Behavior-Driven Development, a collaboration methodology encouraging communication between developers, testers, and business stakeholders using shared examples.
Question 2: In TDD, when must unit tests be written relative to the production code?
- Before writing the production code (Correct answer)
- After writing the production code
- Simultaneously with the production code
- After the code has passed peer review
Correct answer: Before writing the production code
TDD requires writing unit tests before the production code so that the implementation is written specifically to satisfy the pre-defined test requirements.
Question 3: Which JavaScript testing framework uses describe() and it() blocks to support BDD-style test specification?
- Jasmine (Correct answer)
- Selenium
- JUnit
- pytest
Correct answer: Jasmine
Jasmine is a BDD-style JavaScript testing framework using describe() for suites and it() for individual specs, producing human-readable test output.
Question 4: In Gherkin syntax, what does the 'Given' keyword represent in a test scenario?
- The initial context or preconditions before the action being tested (Correct answer)
- The action or event performed during the test
- The expected outcome of the tested behavior
- The test data table used to parameterize the scenario
Correct answer: The initial context or preconditions before the action being tested
'Given' describes the initial context, state, or preconditions that exist before the action under test is performed.
Question 5: What is a 'step definition' in a BDD framework like Cucumber?
- Code that maps each Gherkin step to executable test code (Correct answer)
- A description of test prerequisites in the feature file
- A Gherkin keyword that introduces sub-steps within a scenario
- A report generated after BDD test suite execution
Correct answer: Code that maps each Gherkin step to executable test code
Step definitions are the code implementations (in Java, Python, Ruby, etc.) that correspond to and execute each Gherkin step written in a feature file.
Question 6: Which software design principle does TDD naturally enforce by requiring code to be testable in isolation?
- Single Responsibility Principle (Correct answer)
- Open/Closed Principle
- Liskov Substitution Principle
- Interface Segregation Principle
Correct answer: Single Responsibility Principle
TDD enforces the Single Responsibility Principle because code with multiple responsibilities is difficult to unit-test in isolation, pushing developers toward smaller, focused units.
Question 7: In BDD Gherkin syntax, what does the 'When' keyword typically describe in a scenario?
- The action or event that triggers the behavior being tested (Correct answer)
- The expected result after the action is performed
- The user role or persona performing the action
- The time constraint applied to the test execution
Correct answer: The action or event that triggers the behavior being tested
'When' describes the action or event that occurs during the test, representing what the user or system does to trigger the behavior under test.
Automation Testing BDD and TDD in Test Automation 2
What does BDD stand for in software development methodology?