What is unit testing?

The practice of verifying individual functions or methods in complete isolation

The verification of complex data flows between the backend and the database

The manual process of checking the user interface for visual inconsistencies

The deployment of code to a staging environment for real-world user feedback

What is integration testing?

The verification of interactions between multiple components or external services

The process of testing a single line of logic without any external dependencies

The act of combining multiple source code files into a single production bundle

The practice of testing the entire system from the perspective of an end user

What is end-to-end (E2E) testing?

The simulation of complete user workflows from the frontend through to the backend

A method for testing private class methods to ensure internal state consistency

A technique for verifying that the API documentation matches the actual code

The process of testing how an application behaves when the network is offline

What is the test pyramid?

A strategy favoring many unit tests, fewer integration tests, and minimal E2E tests

A design pattern where tests are written in a hierarchical order of code complexity

A requirement that every line of code must be covered by at least three test types

A visual representation of the server infrastructure used to run automated suites

A replacement for a dependency that allows for controlling and inspecting behavior

A duplicate of the production database used for running heavy analytical queries

A specialized function that automatically fixes bugs found during a test run

A type of comment used to temporarily disable tests that are currently failing

A simplified object that returns fixed, predetermined data for specific calls

A complex simulation of a third-party API that includes full business logic

A temporary variable used to hold the results of a failed assertion

A piece of code that connects the frontend components to the backend API

A wrapper around a function that records details about how it was called

A hidden security tool that monitors the cluster for unauthorized access

A test that intentionally fails to ensure the reporting system is active

A specialized type of mock that deletes data after a test completes

A baseline set of data or state used consistently across multiple test cases

A physical hardware device used to run mobile application tests

A permanent change to the production database required for a new feature

A syntax error that prevents a test file from being executed by the runner

What is code coverage?

A metric indicating the percentage of source code executed during a test suite

A security report listing all the third-party libraries used in a project

A legal document that protects developers from liability for code defects

A count of how many developers have reviewed a specific pull request

A modern, browser-based framework designed for end-to-end testing

A server-side language used for writing high-performance unit tests

A cloud-based tool for storing and versioning large binary test files

A plugin that automatically converts manual tests into automated scripts

What is test isolation?

Ensuring that the outcome of one test does not affect the outcome of another

Running all tests on a single, disconnected machine to prevent data leaks

A rule that prevents developers from talking to each other during the QA phase

The practice of putting all failing tests into a separate folder for later review

What is a flaky test?

A test that provides inconsistent results without any changes to the code

A test that is designed to fail when the system is under heavy load

A test that takes a long time to run due to slow network connections

A test that has been deprecated and is no longer part of the main suite

What is Test-Driven Development (TDD)?

A process where you write a failing test before writing the actual implementation

A strategy where developers only write code that has already been tested manually

A management style that rewards developers based on the number of tests written

A tool that automatically generates unit tests based on existing production code

What is Behavior-Driven Development (BDD)?

A methodology using human-readable descriptions to define how an application should act

A performance test that monitors the behavior of the server CPU during a spike

A way of writing code where the computer predicts the next logic step for the developer

A security protocol that tracks the behavior of users on a public network

What is snapshot testing?

A technique that compares the current output of a component to a previously stored version

A method for taking a photo of the developer to verify their identity

A way of testing that only checks the code that was changed in the last hour

A tool that creates a backup of the entire server before a test begins

What is the AAA (Arrange-Act-Assert) pattern?

A structural pattern that divides a test into three clear, sequential phases

A grading system that ranks tests from A (perfect) to F (completely broken)

A cloud provider requirement that all tests must be authenticated with three keys

A technique for running three different tests at the exact same time

What is parameterized testing?

A method for executing the same test logic multiple times using different input data

A test that checks if the parameters of a function are typed correctly

A way to limit the number of arguments a function can receive during a test

A performance metric that measures the time it takes to parse URL parameters

What is regression testing?

Re-running existing tests to confirm that new changes have not introduced any new bugs

The practice of reverting the code to a previous version when a test fails

A testing phase where old, unused code is deleted from the repository

A manual process where users report bugs they found in the previous release

What is smoke testing?

A preliminary set of tests that verify the most critical functions of an application

A test that checks if the server hardware is overheating under load

A specialized security test that checks for vulnerabilities in firewalls

The process of deleting all log files before starting a fresh test run

What is performance/load testing?

A strategy to evaluate how a system performs under a high volume of concurrent users

A test that checks if the developers are writing code fast enough

A way to measure the physical speed of the internet connection in the office

A method for compressing the application size to improve download times

What is security testing?

The practice of identifying vulnerabilities and threats in application code or infrastructure

The act of locking the office doors to prevent unauthorized physical entry

A requirement that all developers must use complex passwords for their accounts

A test that checks if the application can run on a secure operating system

What is contract testing?

A technique to ensure that a provider and a consumer of an API agree on the data format

A legal review of the terms of service agreement for a new software product

A test that verifies if a developer has completed their assigned tasks

A way to verify that a third-party vendor is following their service level agreement

What is mutation testing?

An advanced method that modifies the source code to check if the test suite fails

A process for automatically updating the code to a newer version of a library

A test that checks if the application can adapt to different screen sizes

A way of testing how an application behaves when its binary data is corrupted

What is property-based testing?

A strategy where a test generates random data to verify that certain logic properties always hold

A test that verifies whether object properties are stored correctly in the database

A method for calculating the market value of the source code of a software application

A test that only focuses on the CSS properties of a web page

What is accessibility testing?

The practice of ensuring that software is usable by people with various disabilities

A test that checks if the website can be accessed from any country in the world

The process of checking if the application has a fast enough login time

A test that ensures the server room is accessible to maintenance staff

What is the test data builder pattern?

A design pattern that uses a fluent interface to construct complex objects for testing

A tool that automatically scrapes data from the web to use in a test suite

A database script that builds a new table every time a test is executed

A specific way of organizing the folders where test data is stored

What is test isolation and why is it important?

A requirement that tests remain independent to prevent side effects and shared state

A security feature that keeps the test code separate from the production code

A strategy where only one developer is allowed to run tests at a time

A rule that forces tests to only run on a specific version of the operating system

What is continuous testing in CI/CD?

The automated execution of software tests as part of the software delivery pipeline

A manual process where a QA engineer tests the application every single day

A test that runs in an infinite loop until it finds a bug

The practice of writing tests while the application is already running in production

What is canary testing and canary deployment?

The process of releasing a new version of code to a small group of users to monitor performance

A specialized test designed to check software compatibility with legacy browsers

The act of testing the application in a room filled with actual birds

A strategy where the test suite is executed by an AI that mimics a human user

What is chaos engineering and chaos testing?

The discipline of experimenting on a system to ensure its ability to withstand turbulent conditions

A methodology where developers write code without any plan or documentation

A specialized test that checks for errors in the mathematical formulas of an application

The practice of running all tests at the same time on a single CPU core

Quizzes

Quality Assurance Testing

Testing Strategies: Unit, Integration, E2E

Mohammad Abu Mattar20 QuestionsIntermediatePublished: 23 Mar, 2026

Markdown for AI

Testing Strategies: Unit, Integration, E2E

Up to 20 questions, shuffled on every run

Quiz Configuration

Enterto start

Welcome to the Testing Strategies Quiz! This quiz covers unit testing, integration testing, end-to-end testing, mocking, fixtures, code coverage, and more. Test your knowledge and understanding of these essential concepts in software testing. Good luck!

Answer key and explanations20 questions

The quiz above draws 20 questions at random from these 30, so a second attempt will not be the same run. Everything in the pool is listed here.

What is unit testing?
AnswerThe practice of verifying individual functions or methods in complete isolation
What is integration testing?
AnswerThe verification of interactions between multiple components or external services
What is end-to-end (E2E) testing?
AnswerThe simulation of complete user workflows from the frontend through to the backend
What is the test pyramid?
AnswerA strategy favoring many unit tests, fewer integration tests, and minimal E2E tests
What is a mock?
AnswerA replacement for a dependency that allows for controlling and inspecting behavior
What is a stub?
AnswerA simplified object that returns fixed, predetermined data for specific calls
What is a spy?
AnswerA wrapper around a function that records details about how it was called
What is a fixture?
AnswerA baseline set of data or state used consistently across multiple test cases
What is code coverage?
AnswerA metric indicating the percentage of source code executed during a test suite
What is Cypress?
AnswerA modern, browser-based framework designed for end-to-end testing
What is test isolation?
AnswerEnsuring that the outcome of one test does not affect the outcome of another
What is a flaky test?
AnswerA test that provides inconsistent results without any changes to the code
What is Test-Driven Development (TDD)?
AnswerA process where you write a failing test before writing the actual implementation
What is Behavior-Driven Development (BDD)?
AnswerA methodology using human-readable descriptions to define how an application should act
What is snapshot testing?
AnswerA technique that compares the current output of a component to a previously stored version
What is the AAA (Arrange-Act-Assert) pattern?
AnswerA structural pattern that divides a test into three clear, sequential phases
What is parameterized testing?
AnswerA method for executing the same test logic multiple times using different input data
What is regression testing?
AnswerRe-running existing tests to confirm that new changes have not introduced any new bugs
What is smoke testing?
AnswerA preliminary set of tests that verify the most critical functions of an application
What is performance/load testing?
AnswerA strategy to evaluate how a system performs under a high volume of concurrent users
What is security testing?
AnswerThe practice of identifying vulnerabilities and threats in application code or infrastructure
What is contract testing?
AnswerA technique to ensure that a provider and a consumer of an API agree on the data format
What is mutation testing?
AnswerAn advanced method that modifies the source code to check if the test suite fails
What is property-based testing?
AnswerA strategy where a test generates random data to verify that certain logic properties always hold
What is accessibility testing?
AnswerThe practice of ensuring that software is usable by people with various disabilities
What is the test data builder pattern?
AnswerA design pattern that uses a fluent interface to construct complex objects for testing
What is test isolation and why is it important?
AnswerA requirement that tests remain independent to prevent side effects and shared state
What is continuous testing in CI/CD?
AnswerThe automated execution of software tests as part of the software delivery pipeline
What is canary testing and canary deployment?
AnswerThe process of releasing a new version of code to a small group of users to monitor performance
What is chaos engineering and chaos testing?
AnswerThe discipline of experimenting on a system to ensure its ability to withstand turbulent conditions