1 files changed, 45 insertions, 0 deletions
diff --git a/junit4/src/test/java/junit/samples/money/IMoney.java b/junit4/src/test/java/junit/samples/money/IMoney.java
new file mode 100644
index 0000000..b8f9496
--- /dev/null
+++ b/junit4/src/test/java/junit/samples/money/IMoney.java
@@ -0,0 +1,45 @@
+package junit.samples.money;
+
+/**
+ * The common interface for simple Monies and MoneyBags
+ *
+ */
+public interface IMoney {
+	/**
+	 * Adds a money to this money.
+	 */
+	public abstract IMoney add(IMoney m);
+	/**
+	 * Adds a simple Money to this money. This is a helper method for
+	 * implementing double dispatch
+	 */
+	public abstract IMoney addMoney(Money m);
+	/**
+	 * Adds a MoneyBag to this money. This is a helper method for
+	 * implementing double dispatch
+	 */
+	public abstract IMoney addMoneyBag(MoneyBag s);
+	/**
+	 * Tests whether this money is zero
+	 */
+	public abstract boolean isZero();
+	/**
+	 * Multiplies a money by the given factor.
+	 */
+	public abstract IMoney multiply(int factor);
+	/**
+	 * Negates this money.
+	 */
+	public abstract IMoney negate();
+	/**
+	 * Subtracts a money from this money.
+	 */
+	public abstract IMoney subtract(IMoney m);
+	/**
+	 * Append this to a MoneyBag m.
+	 * appendTo() needs to be public because it is used
+	 * polymorphically, but it should not be used by clients
+	 * because it modifies the argument m.
+	 */
+	public abstract void appendTo(MoneyBag m);
+}
+\ No newline at end of file