Add tests for CashShopSurpriseHandler

src/test/java/net/packet/ByteBufInPacketTest.java

@@ -235,4 +235,12 @@ class ByteBufInPacketTest {
 
         assertEquals(initial.length(), afterReadingOpcode.length());
     }
-}
+
+    @Test
+    void equalsShouldCompareBytes() {
+        ByteBufInPacket packet1 = new ByteBufInPacket(Unpooled.wrappedBuffer(new byte[]{ 11, 22, 33, 44 }));
+        ByteBufInPacket packet2 = new ByteBufInPacket(Unpooled.wrappedBuffer(new byte[]{ 11, 22, 33, 44 }));
+
+        assertEquals(packet1, packet2);
+    }
+}

src/test/java/net/packet/ByteBufOutPacketTest.java

@@ -203,4 +203,14 @@ class ByteBufOutPacketTest {
         assertEquals(0, wrapped.readByte());
         assertEquals(secondWrittenByte, wrapped.readByte());
     }
-}
+
+    @Test
+    void equalsShouldCompareBytes() {
+        ByteBufOutPacket packet1 = new ByteBufOutPacket();
+        packet1.writeBytes(new byte[] { 55, 66, 77, 88 });
+        ByteBufOutPacket packet2 = new ByteBufOutPacket();
+        packet2.writeBytes(new byte[] { 55, 66, 77, 88 });
+
+        assertEquals(packet1, packet2);
+    }
+}

src/test/java/net/server/channel/handlers/CashShopSurpriseHandlerTest.java

@@ -0,0 +1,66 @@
+package net.server.channel.handlers;
+
+import client.inventory.Item;
+import constants.id.ItemId;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+import server.CashShop;
+import testutil.HandlerTest;
+import testutil.Items;
+import testutil.Packets;
+import tools.PacketCreator;
+
+import java.util.Optional;
+
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+@ExtendWith(MockitoExtension.class)
+class CashShopSurpriseHandlerTest extends HandlerTest {
+    private final CashShopSurpriseHandler handler = new CashShopSurpriseHandler();
+
+    @Mock
+    private CashShop cashShop;
+
+    @BeforeEach
+    void prepareCashShop() {
+        when(chr.getCashShop()).thenReturn(cashShop);
+    }
+
+    @Test
+    void shouldDoNothingWhenCsIsNotOpened() {
+        when(cashShop.isOpened()).thenReturn(false);
+
+        handler.handlePacket(Packets.emptyInPacket(), client);
+
+        verify(cashShop, never()).openCashShopSurprise();
+    }
+
+    @Test
+    void shouldSendFailurePacketWhenFailToOpen() {
+        when(cashShop.isOpened()).thenReturn(true);
+        when(cashShop.openCashShopSurprise()).thenReturn(Optional.empty());
+
+        handler.handlePacket(Packets.emptyInPacket(), client);
+
+        verify(client).sendPacket(PacketCreator.onCashItemGachaponOpenFailed());
+    }
+
+    @Test
+    void shouldSendSuccessPacketWhenSuccessfullyOpen() {
+        when(cashShop.isOpened()).thenReturn(true);
+        Item cashShopSurprise = Items.itemWithQuantity(ItemId.CASH_SHOP_SURPRISE, 3);
+        Item reward = Items.itemWithQuantity(5000012, 1);
+        when(cashShop.openCashShopSurprise()).thenReturn(Optional.of(new CashShop.CashShopSurpriseResult(
+                cashShopSurprise, reward)));
+
+        handler.handlePacket(Packets.emptyInPacket(), client);
+
+        verify(client).sendPacket(PacketCreator.onCashGachaponOpenSuccess(ACCOUNT_ID, cashShopSurprise.getCashId(), 3,
+                reward, 5000012, 1, true));
+    }
+}