1 files changed, 78 insertions, 0 deletions
diff --git a/junit4/src/test/java/junit/samples/money/Money.java b/junit4/src/test/java/junit/samples/money/Money.java
new file mode 100644
index 0000000..3d8c2fd
--- /dev/null
+++ b/junit4/src/test/java/junit/samples/money/Money.java
@@ -0,0 +1,78 @@
+package junit.samples.money;
+
+/**
+ * A simple Money.
+ *
+ */
+public class Money implements IMoney {
+
+	private int fAmount;
+	private String fCurrency;
+
+	/**
+	 * Constructs a money from the given amount and currency.
+	 */
+	public Money(int amount, String currency) {
+		fAmount= amount;
+		fCurrency= currency;
+	}
+	/**
+	 * Adds a money to this money. Forwards the request to the addMoney helper.
+	 */
+	public IMoney add(IMoney m) {
+		return m.addMoney(this);
+	}
+	public IMoney addMoney(Money m) {
+		if (m.currency().equals(currency()) )
+			return new Money(amount()+m.amount(), currency());
+		return MoneyBag.create(this, m);
+	}
+	public IMoney addMoneyBag(MoneyBag s) {
+		return s.addMoney(this);
+	}
+	public int amount() {
+		return fAmount;
+	}
+	public String currency() {
+		return fCurrency;
+	}
+	@Override
+	public boolean equals(Object anObject) {
+		if (isZero()) 
+			if (anObject instanceof IMoney)
+				return ((IMoney)anObject).isZero();
+		if (anObject instanceof Money) {
+			Money aMoney= (Money)anObject;
+			return aMoney.currency().equals(currency())
+							 && amount() == aMoney.amount();
+		}
+		return false;
+	}
+	@Override
+	public int hashCode() {
+		if (fAmount == 0)
+			return 0;
+		return fCurrency.hashCode()+fAmount;
+	}
+	public boolean isZero() {
+		return amount() == 0;
+	}
+	public IMoney multiply(int factor) {
+		return new Money(amount()*factor, currency());
+	}
+	public IMoney negate() {
+		return new Money(-amount(), currency());
+	}
+	public IMoney subtract(IMoney m) {
+		return add(m.negate());
+	}
+	@Override
+	public String toString() {
+		StringBuffer buffer = new StringBuffer();
+		buffer.append("["+amount()+" "+currency()+"]");
+		return buffer.toString();
+	}
+	public /*this makes no sense*/ void appendTo(MoneyBag m) {
+		m.appendMoney(this);
+	}
+}
+\ No newline at end of file