diff --git a/src/test/java/net/packet/ByteBufInPacketTest.java b/src/test/java/net/packet/ByteBufInPacketTest.java
index 3a27dd795a..6837ecfe1c 100644
--- a/src/test/java/net/packet/ByteBufInPacketTest.java
+++ b/src/test/java/net/packet/ByteBufInPacketTest.java
@@ -38,6 +38,36 @@ class ByteBufInPacketTest {
         assertEquals(writtenByte, readByte);
     }
 
+    @Test
+    void readUnsignedByte() {
+        final byte writtenByte = Byte.MAX_VALUE;
+        byteBuf.writeByte(writtenByte);
+
+        short readUnsignedByte = inPacket.readUnsignedByte();
+
+        assertEquals(writtenByte, readUnsignedByte);
+    }
+
+    @Test
+    void readUnsignedByte_shouldBeNonnegative() {
+        final byte writtenByte = Byte.MIN_VALUE;
+        byteBuf.writeByte(writtenByte);
+
+        short readUnsignedByte = inPacket.readUnsignedByte();
+
+        assertEquals((short)writtenByte + 256, readUnsignedByte);
+    }
+
+    @Test
+    void readUnsignedByte_shouldBeNonnegative2() {
+        final byte writtenByte = -1;
+        byteBuf.writeByte(writtenByte);
+
+        short readUnsignedByte = inPacket.readUnsignedByte();
+
+        assertEquals((short)writtenByte + 256, readUnsignedByte);
+    }
+
     @Test
     void readShort() {
         final short writtenShort = 12_345;