BankAccount Beginner Lab

Overview

Implement the BankAccount class to pass the beginner tasks.

Core Tasks

1. Implement deposit(double amount) with guard clauses for invalid deposits (zero/negative).
2. Implement withdraw(double amount) with guard clauses (no overdraft, no negative withdrawal).
3. Implement getBalance() to return the current balance.
4. Test edge cases:
   • Deposit 0
   • Withdraw more than balance
   • Negative deposit/withdrawal

How to Run

Compile and run tests with Gradle:

./gradlew test    # macOS/Linux
gradlew.bat test  # Windows