Using JUnit 4's Assert class, write tests for the Account class that cover the following cases:

  • The deposit and withdraw methods will not accept negative numbers.
  • Account cannot overstep its overdraft limit.
  • The deposit and withdraw methods will deposit or withdraw the correct amount, respectively.
  • The withdraw and deposit methods return the correct results.
public class Account {
    private double balance;
    private double overdraftLimit;
    public Account(double overdraftLimit) {
        this.balance = 0;
        this.overdraftLimit = overdraftLimit > 0 ? overdraftLimit : 0;
    public boolean deposit(double amount) {
        if(amount >= 0) {
            this.balance += amount;
            return true;
        return false;
    public boolean withdraw(double amount) {
        if(this.balance - amount >= -this.overdraftLimit && amount >= 0) {
            this.balance -= amount;
            return true;
        return false;
    public double getBalance() {
        return balance;
    public double getOverdraftLimit() {
        return overdraftLimit;

Each of the test case methods should be in the AccountTest class and have the Test annotation.

  •   The deposit and withdraw methods will not accept negative numbers: Wrong answer
  •   Account cannot overstep its overdraft limit: Wrong answer
  •   The deposit and withdraw methods will deposit or withdraw the correct amount, respectively: Wrong answer
  •   The withdraw and deposit methods return the correct results: Wrong answer

Java Test Case Design Unit Testing Public


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