Initial Test for Multi Currency Money [springframeworkguru#17-springframeworkguru#18. Degenerate Objects]

Author: gechulim

src/test/java/guru/springframework/Dollar.java

@@ -0,0 +1,12 @@
+package guru.springframework;
+
+public class Dollar {
+    int amount;
+    public Dollar(int amount) {
+        this.amount = amount;
+    }
+
+    Dollar times(int multiplier) {
+        return new Dollar(this.amount * multiplier);
+    }
+}

src/test/java/guru/springframework/MoneyTest.java

@@ -0,0 +1,17 @@
+package guru.springframework;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class MoneyTest {
+    @Test
+    void testMultiplication() {
+        Dollar five = new Dollar(5);
+        Dollar product = five.times(2);
+        assertEquals(10, product.amount);
+        product =five.times(3);
+        assertEquals(15, product.amount);
+    }
+
+}