test pooled buffers

src/test/java/network/PooledBuffersTest.java

@@ -0,0 +1,33 @@
+package network;
+
+import net.minestom.server.utils.binary.BinaryBuffer;
+import net.minestom.server.utils.binary.PooledBuffers;
+import org.junit.jupiter.api.Test;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class PooledBuffersTest {
+
+    @Test
+    public void pool() {
+        Set<BinaryBuffer> pooledBuffers = new HashSet<>();
+        PooledBuffers.clear();
+
+        assertEquals(0, PooledBuffers.count());
+        var buffer = PooledBuffers.get();
+        assertEquals(PooledBuffers.bufferSize(), buffer.capacity());
+        pooledBuffers.add(buffer);
+
+        buffer = PooledBuffers.get();
+        assertTrue(pooledBuffers.add(buffer));
+
+        PooledBuffers.add(buffer);
+        assertEquals(1, PooledBuffers.count());
+        buffer = PooledBuffers.get();
+        assertEquals(0, PooledBuffers.count());
+        assertFalse(pooledBuffers.add(buffer));
+    }
+}