From 02cd5c116fe533731862a36158cffec7cbbb9777 Mon Sep 17 00:00:00 2001
From: Vitor Costa <vitor.costa@redspark.io>
Date: Thu, 1 Oct 2020 22:25:16 -0300
Subject: [PATCH 1/2] First example of course. Module tdd. working with baby
 steps dude

---
 src/main/java/guru/springframework/Dollar.java    | 14 ++++++++++++++
 src/test/java/guru/springframework/MoneyTest.java | 14 ++++++++++++++
 2 files changed, 28 insertions(+)
 create mode 100644 src/main/java/guru/springframework/Dollar.java
 create mode 100644 src/test/java/guru/springframework/MoneyTest.java

diff --git a/src/main/java/guru/springframework/Dollar.java b/src/main/java/guru/springframework/Dollar.java
new file mode 100644
index 00000000..75dddfb7
--- /dev/null
+++ b/src/main/java/guru/springframework/Dollar.java
@@ -0,0 +1,14 @@
+package guru.springframework;
+
+public class Dollar {
+
+    int amount;
+
+    public Dollar(int amount) {
+        this.amount = amount;
+    }
+
+    void times(int multiplier) {
+        amount *= multiplier;
+    }
+}
diff --git a/src/test/java/guru/springframework/MoneyTest.java b/src/test/java/guru/springframework/MoneyTest.java
new file mode 100644
index 00000000..fe41f9f8
--- /dev/null
+++ b/src/test/java/guru/springframework/MoneyTest.java
@@ -0,0 +1,14 @@
+package guru.springframework;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+public class MoneyTest {
+
+    @Test
+    void testMultiplication() {
+        Dollar five = new Dollar(5);
+        five.times(2);
+        Assertions.assertEquals(10, five.amount);
+    }
+}

From 6a24572e090fa03199f8d163f03dfd00ca1226c5 Mon Sep 17 00:00:00 2001
From: Vitor Costa <vitor.costa@redspark.io>
Date: Thu, 1 Oct 2020 22:47:21 -0300
Subject: [PATCH 2/2] First example of course. Module tdd. working with baby
 steps dude

---
 src/main/java/guru/springframework/Dollar.java    | 4 ++--
 src/test/java/guru/springframework/MoneyTest.java | 8 +++++---
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/main/java/guru/springframework/Dollar.java b/src/main/java/guru/springframework/Dollar.java
index 75dddfb7..2bd58ef9 100644
--- a/src/main/java/guru/springframework/Dollar.java
+++ b/src/main/java/guru/springframework/Dollar.java
@@ -8,7 +8,7 @@ public Dollar(int amount) {
         this.amount = amount;
     }
 
-    void times(int multiplier) {
-        amount *= multiplier;
+    Dollar times(int multiplier) {
+        return new Dollar(amount * multiplier);
     }
 }
diff --git a/src/test/java/guru/springframework/MoneyTest.java b/src/test/java/guru/springframework/MoneyTest.java
index fe41f9f8..222d33a6 100644
--- a/src/test/java/guru/springframework/MoneyTest.java
+++ b/src/test/java/guru/springframework/MoneyTest.java
@@ -1,14 +1,16 @@
 package guru.springframework;
 
-import org.junit.jupiter.api.Assertions;
 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);
-        five.times(2);
-        Assertions.assertEquals(10, five.amount);
+        Dollar product = five.times(2);
+        assertEquals(10, product.amount);
+        product = five.times(3);
+        assertEquals(15, product.amount);
     }
 }