Add Currency method to Money to allow access to Currency information

money.go

@@ -24,6 +24,11 @@ func New(amount int64, code string) *Money {
 	}
 }
 
+// Currency returns the currency used by Money
+func (m *Money) Currency() *Currency {
+	return m.currency
+}
+
 // Amount returns a copy of the internal monetary value as an int64
 func (m *Money) Amount() int64 {
 	return m.amount.val

money_test.go

@@ -278,7 +278,6 @@ func TestMoney_Add(t *testing.T) {
 		}
 	}
 
-
 }
 
 func TestMoney_Add2(t *testing.T) {
@@ -468,7 +467,6 @@ func TestMoney_Allocate2(t *testing.T) {
 	}
 }
 
-
 func TestMoney_Chain(t *testing.T) {
 	m := New(10, "EUR")
 	om := New(5, "EUR")
@@ -590,10 +588,18 @@ func TestMoney_Comparison(t *testing.T) {
 	}
 }
 
+func TestMoney_Currency(t *testing.T) {
+	pound := New(100, "GBP")
+
+	if pound.Currency().Code != "GBP" {
+		t.Errorf("Expected %s got %s", "GBP", pound.Currency().Code)
+	}
+}
+
 func TestMoney_Amount(t *testing.T) {
 	pound := New(100, "GBP")
 
 	if pound.Amount() != 100 {
 		t.Errorf("Expected %d got %d", 100, pound.Amount())
 	}
-}
+}