Writing test cases in Blockchain / Solidity - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the main purpose of writing test cases in blockchain development?

To verify that smart contracts and blockchain applications work correctly and securely before deployment.

beginner

Name one common framework used for writing test cases in Ethereum smart contracts.

Truffle is a popular framework that helps write, run, and manage test cases for Ethereum smart contracts.

intermediate

Why should test cases cover edge cases in blockchain applications?

Because blockchain transactions are irreversible, catching unusual or rare scenarios early prevents costly mistakes.

beginner

What does a unit test focus on in blockchain smart contract testing?

It tests a small part or function of the smart contract independently to ensure it behaves as expected.

intermediate

How can automated test cases improve blockchain development?

They save time by running tests quickly and repeatedly, helping catch bugs early and ensuring code quality.

Which of the following is a key reason to write test cases for blockchain smart contracts?

A To ensure the contract behaves correctly before deployment

B To make the contract run faster

C To increase the contract size

D To avoid writing documentation

Test cases help verify that smart contracts work correctly and securely before they are deployed.

What type of test checks a single function in a smart contract?

A Performance test

B Integration test

C System test

D Unit test

Unit tests focus on testing individual functions or parts of the contract independently.

Which framework is commonly used for testing Ethereum smart contracts?

A React

B Django

C Truffle

D Angular

Truffle is a popular framework designed for Ethereum smart contract development and testing.

Why is it important to test edge cases in blockchain applications?

A Because blockchain transactions can be reversed easily

B Because blockchain transactions are irreversible and errors can be costly

C Because edge cases improve UI design

D Because edge cases are the most common scenarios

Irreversible blockchain transactions mean catching rare or unusual cases early is critical to avoid costly mistakes.

How do automated test cases benefit blockchain development?

A They save time and catch bugs early

B They require manual checking

C They slow down deployment

D They increase gas fees

Automated tests run quickly and repeatedly, helping developers find bugs early and maintain code quality.

Explain why writing test cases is crucial in blockchain smart contract development.

Think about what happens if a smart contract has a bug after deployment.

Describe the difference between unit tests and integration tests in blockchain testing.

Consider testing one piece versus testing how pieces work together.