1. Task: https://github.com/AlreadyBored/nodejs-assignments/blob/main/assignments/basic-testing/assignment.md
2. Done - 2025-11-09/ deadline 2025-11-10
3. Score: 258/258

Simple tests

• should add two numbers
• should subtract two numbers
• should multiply two numbers
• should divide two numbers
• should exponentiate two numbers
• should return null for invalid action
• should return null for invalid arguments

Table tests

• implemented

Error handling & async

• should resolve provided value
• should throw error with provided message
• should throw error with default message if message is not provided
• should throw custom error
• should reject custom error

Testing class

• should create account with initial balance
• should throw InsufficientFundsError error when withdrawing more than balance
• should throw error when transferring more than balance
• should throw error when transferring to the same account
• should deposit money
• should withdraw money
• should transfer money
• fetchBalance should return number in case if request did not failed
• should set new balance if fetchBalance returned number
• should throw SynchronizationFailedError if fetchBalance returned null

Partial mocking

• mockOne, mockTwo, mockThree should not log into console
• unmockedFunction should log into console

Mocking Node.js API

• should set timeout with provided callback and timeout
• should call callback only after timeout
• should set interval with provided callback and timeout
• should call callback multiple times after multiple intervals
• should call join with pathToFile
• should return null if file does not exist
• should return file content if file exists

Mocking library API

• should create instance with provided base url
• should perform request to correct provided url
• should return response data

Snapshot testing

• should generate linked list from values 1
• should generate linked list from values 2

Forfeits

• -5 for each linter warning
• -10 for each linter/TS compiler error
• -30% of total task score Commits after deadline (except commits that affect only Readme.md, .gitignore, etc.)