JNI native zlib compression 🔥

native/src/test/java/com/velocitypowered/natives/compression/VelocityCompressorTest.java

@@ -0,0 +1,56 @@
+package com.velocitypowered.natives.compression;
+
+import com.velocitypowered.natives.util.Natives;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.ByteBufUtil;
+import io.netty.buffer.Unpooled;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.condition.EnabledOnOs;
+
+import java.util.Random;
+import java.util.zip.DataFormatException;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.fail;
+import static org.junit.jupiter.api.condition.OS.LINUX;
+import static org.junit.jupiter.api.condition.OS.MAC;
+
+class VelocityCompressorTest {
+    @Test
+    @EnabledOnOs({ MAC, LINUX })
+    void nativeIntegrityCheck() throws DataFormatException {
+        VelocityCompressor compressor = Natives.compressor.supply().get();
+        if (compressor instanceof JavaVelocityCompressor) {
+            fail("Loaded regular compressor");
+        }
+        check(compressor);
+    }
+
+    @Test
+    void javaIntegrityCheck() throws DataFormatException {
+        JavaVelocityCompressor compressor = new JavaVelocityCompressor();
+        check(compressor);
+    }
+
+    private void check(VelocityCompressor compressor) throws DataFormatException {
+        ByteBuf source = Unpooled.directBuffer();
+        ByteBuf dest = Unpooled.directBuffer();
+        ByteBuf decompressed = Unpooled.directBuffer();
+
+        Random random = new Random(1);
+        byte[] randomBytes = new byte[1 << 21];
+        random.nextBytes(randomBytes);
+        source.writeBytes(randomBytes);
+
+        try {
+            compressor.deflate(source, dest);
+            compressor.inflate(dest, decompressed);
+            source.readerIndex(0);
+            assertTrue(ByteBufUtil.equals(source, decompressed));
+        } finally {
+            source.release();
+            dest.release();
+            compressor.dispose();
+        }
+    }
+}