Testing Flashcards
What is a unit test?
It focuses on testing a single, isolated piece of functionality, like a function, method, or class, to ensure it behaves as expected
What is an integration test?
An integration test is a type of software testing that evaluates the interaction between different modules or services to ensure they work together as expected.
True or False: Unit tests are typically faster to run than integration tests.
True
Fill in the blank: Unit tests are usually written to test __________.
individual functions or methods
In a Node.js backend, which testing framework is commonly used for unit tests?
Jest
What is a common tool for integration testing in a Node.js environment?
Supertest
Multiple Choice: Which of the following is a benefit of unit testing? A) Increased code coverage B) Identifying integration issues C) Testing user interface
A) Increased code coverage
True or False: Integration tests can help identify issues that unit tests might miss.
True
What is the primary goal of unit testing?
To ensure that individual components work correctly in isolation.
What does the term ‘mocking’ refer to in unit testing?
Mocking refers to creating simulated objects or functions to mimic the behavior of real ones in a controlled way.
Fill in the blank: Integration tests often require a __________ environment to simulate real-world usage.
more complex
What is the difference between black-box testing and white-box testing?
Black-box testing focuses on input and output without knowledge of internal code, while white-box testing involves understanding the internal workings of the application.
Multiple Choice: Which testing type is generally more focused on the application’s architecture? A) Unit Testing B) Integration Testing C) Both
B) Integration Testing
True or False: Unit tests should be written after the code is implemented.
False
What is a common practice for organizing unit tests in a Node.js project?
Organizing them in a dedicated ‘tests’ or ‘__tests__’ directory.
Fill in the blank: Integration tests often require a __________ database setup.
real or test
What is a key disadvantage of unit tests?
They do not test the interactions between components.
Multiple Choice: What is the purpose of test coverage tools? A) To run tests B) To measure how much of the code is tested C) To mock dependencies
B) To measure how much of the code is tested
What is the role of a test runner in Node.js testing?
A test runner executes tests and reports the results.
True or False: Integration tests can be run independently of unit tests.
True
What is the typical execution time difference between unit tests and integration tests?
Unit tests are typically executed in milliseconds, while integration tests can take seconds or longer.
Fill in the blank: Both unit tests and integration tests are essential for __________ quality assurance.
software
What is a common practice to follow when writing unit tests?
Writing tests that are independent and can run in any order.
Multiple Choice: Which testing type is best for catching regressions? A) Unit Testing B) Integration Testing C) Both
C) Both
What does ‘test-driven development’ (TDD) involve?
Writing tests before writing the code that needs to be tested.
What is a key advantage of integration testing?
It helps ensure that different parts of the application work together as intended.
What is the main focus of unit tests?
Unit tests focus on testing the logic of individual components in isolation, without involving external dependencies.
What is the main focus of integration tests?
Integration tests focus on ensuring that different parts of the system, such as controllers, services, and databases, collaborate and integrate seamlessly.
What is the purpose of end-to-end (E2E) tests?
E2E tests validate the entire application workflow, ensuring it works as a whole from a user’s perspective.
What do functional tests ensure?
Functional tests ensure that specific features or functions of the software meet the requirements.
What are acceptance tests?
Acceptance tests verify that the software meets business requirements and satisfies end-user needs.
What is the focus of performance tests?
Performance tests evaluate the speed, responsiveness, and stability of the application under various conditions.
What is the purpose of load testing (a type of performance test)?
Load testing checks how the application performs under expected levels of traffic.
What is stress testing?
Stress testing evaluates the application’s behavior under extreme or breaking-point conditions.
What do regression tests aim to prevent?
Regression tests ensure that new changes or updates do not break existing functionality.
What are smoke tests?
Smoke tests quickly verify basic functionality to determine if the application is stable enough for further testing.
What is the difference between sanity tests and smoke tests?
Sanity tests focus on validating specific fixes or small changes, while smoke tests check the overall stability.
What do UI tests focus on?
UI tests validate the appearance and behavior of user interface elements.
What is the purpose of security tests?
Security tests identify vulnerabilities and ensure the application is protected from threats like SQL injection or XSS attacks.
What do compatibility tests ensure?
Compatibility tests ensure the application works across different browsers, devices, and operating systems.
What are alpha and beta tests?
Alpha tests are conducted in a controlled environment by internal teams, while beta tests involve real users before the public release.
