tdd : inventoryHelper test

tdd_practice/inventoryTDD/src/main/java/com/example/inventorytdd/Inventory.java

@@ -13,8 +13,4 @@ public class Inventory {
     private InventoryTypeEnum type;
     private int capacity;
     private int current;
-
-    public int getUsableCapa() {
-        return this.capacity - this.current;
-    }
 }

tdd_practice/inventoryTDD/src/main/java/com/example/inventorytdd/InventoryHelper.java

@@ -0,0 +1,24 @@
+package com.example.inventorytdd;
+
+public class InventoryHelper {
+
+    public Inventory createInventory() {
+        return new Inventory();
+    }
+
+    public int getUsableCapa(Inventory inventory) {
+        return inventory.getCapacity() - inventory.getCurrent();
+    }
+
+    public boolean inbound(Inventory inventory, int count) {
+        if (isInboundable(inventory, count)) {
+            inventory.setCurrent(inventory.getCurrent() + count);
+            return true;
+        }
+        return false;
+    }
+
+    public boolean isInboundable(Inventory inventory, int count) {
+        return getUsableCapa(inventory) >= count;
+    }
+}

tdd_practice/inventoryTDD/src/test/java/com/example/inventorytdd/InventoryHelperTests.java

@@ -0,0 +1,71 @@
+package com.example.inventorytdd;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class InventoryHelperTests {
+
+    @Test
+    void inventoryHelper_getUsableCapa_test() {
+        InventoryHelper inventoryHelper = new InventoryHelper();
+
+        Inventory inventory = new Inventory();
+        inventory.setCapacity(10);
+        inventory.setCurrent(5);
+
+        int usableCapa = inventoryHelper.getUsableCapa(inventory);
+        assertEquals(5, usableCapa);
+    }
+
+    @Test
+    void inventoryHelper_inbound_true() {
+        InventoryHelper inventoryHelper = new InventoryHelper();
+
+        Inventory inventory = new Inventory();
+        inventory.setCapacity(40);
+
+        assertTrue(inventoryHelper.inbound(inventory, 10));
+        assertEquals(10, inventory.getCurrent());
+    }
+
+    @Test
+    void inventoryHelper_inbound_false() {
+        InventoryHelper inventoryHelper = new InventoryHelper();
+
+        Inventory inventory = new Inventory();
+        inventory.setCapacity(10);
+
+        assertFalse(inventoryHelper.inbound(inventory, 40));
+        assertEquals(0, inventory.getCurrent());
+    }
+
+    @Test
+    void inventoryHelper_isInboundable_true() {
+        InventoryHelper inventoryHelper = new InventoryHelper();
+        Inventory inventory = new Inventory();
+        inventory.setCapacity(10);
+        inventory.setCurrent(5);
+
+        assertTrue(inventoryHelper.isInboundable(inventory, 3));
+    }
+
+    @Test
+    void inventoryHelper_isInboundable_false() {
+        InventoryHelper inventoryHelper = new InventoryHelper();
+        Inventory inventory = new Inventory();
+        inventory.setCapacity(10);
+        inventory.setCurrent(5);
+
+        assertFalse(inventoryHelper.isInboundable(inventory, 10));
+    }
+
+    @Test
+    void inventoryHelper_createInventory() {
+        InventoryHelper inventoryHelper = new InventoryHelper();
+        Inventory inventory = inventoryHelper.createInventory();
+
+        assertNotNull(inventory);
+    }
+}

tdd_practice/inventoryTDD/src/test/java/com/example/inventorytdd/InventoryTests.java

@@ -42,13 +42,4 @@ public class InventoryTests {
 
         assertEquals(5, inventory.getCurrent());
     }
-
-    @Test
-    void inventory_usableCapa_test() {
-        Inventory inventory = new Inventory();
-        inventory.setCapacity(10);
-        inventory.setCurrent(5);
-
-        assertEquals(5, inventory.getUsableCapa());
-    }
 }

tdd_practice/inventoryTDD/src/test/java/com/example/inventorytdd/to-do.txt

@@ -5,5 +5,10 @@
 [v] 현재 저장된 수량을 알 수 있어야 한다.
 [v] Inventory 의 타입을 Enum 값으로 만든다.
 [v] 앞으로 저장 가능한 수량을 알 수 있어야 한다.
-[] InventoryHelper 클래스 생성
+[v] InventoryHelper 클래스 생성
-[] Capacity 이상으로 입고 되는 것을 방지한다.
+[v] InventoryHelper 클래스에서 사용 가능한 용량을 알아낸다.
+[v] InventoryHelper -> 입고 가능 여부를 확인한다.
+[v] InventoryHelper -> Capacity 이상으로 입고 되는 것을 방지한다.
+[v] InventoryHelper -> 입고를 시킨다.
+[v] InventoryHelper -> Inventory 를 생성한다.
+