diff --git a/src/test/java/ch/unibas/dmi/dbis/cs108/casono/server/network/protocol/response/builder/ResponseBodyBuilderTest.java b/src/test/java/ch/unibas/dmi/dbis/cs108/casono/server/network/protocol/response/builder/ResponseBodyBuilderTest.java
new file mode 100644
index 0000000..6660725
--- /dev/null
+++ b/src/test/java/ch/unibas/dmi/dbis/cs108/casono/server/network/protocol/response/builder/ResponseBodyBuilderTest.java
@@ -0,0 +1,84 @@
+package ch.unibas.dmi.dbis.cs108.casono.server.network.protocol.response.builder;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+public class ResponseBodyBuilderTest {
+    @Test
+    void testSingleParameter() {
+        ResponseBody body = ResponseBody.builder().param("param1", "value1").build();
+
+        assertEquals(1, body.nodes().size());
+        ResponseParameter parameter = (ResponseParameter) body.nodes().get(0);
+        assertEquals("param1", parameter.key());
+        assertEquals("value1", parameter.value());
+    }
+
+    @Test
+    void testSingleBlock() {
+        ResponseBody body =
+                ResponseBody.builder()
+                        .block("block1", block -> block.param("param1", "value1"))
+                        .build();
+
+        assertEquals(1, body.nodes().size());
+
+        ResponseBlock block = (ResponseBlock) body.nodes().get(0);
+        assertEquals(1, block.children().size());
+        assertEquals("block1", block.tag());
+
+        ResponseParameter parameter = (ResponseParameter) block.children().get(0);
+        assertEquals("param1", parameter.key());
+        assertEquals("value1", parameter.value());
+    }
+
+    @Test
+    void testMultipleParameter() {
+        ResponseBody body =
+                ResponseBody.builder().param("param1", "value1").param("param2", "value2").build();
+
+        assertEquals(2, body.nodes().size());
+        ResponseParameter parameter;
+
+        parameter = (ResponseParameter) body.nodes().get(0);
+        assertEquals("param1", parameter.key());
+        assertEquals("value1", parameter.value());
+
+        parameter = (ResponseParameter) body.nodes().get(1);
+        assertEquals("param2", parameter.key());
+        assertEquals("value2", parameter.value());
+    }
+
+    @Test
+    void testMultipleBlocks() {
+        ResponseBody body =
+                ResponseBody.builder()
+                        .block("block1", block -> block.param("param1", "value1"))
+                        .block(
+                                "block2",
+                                block -> {
+                                    block.param("param2", "value2");
+                                    block.param("param3", "value3");
+                                })
+                        .build();
+
+        assertEquals(2, body.nodes().size());
+        ResponseBlock block;
+        ResponseParameter parameter;
+
+        block = (ResponseBlock) body.nodes().get(0);
+        assertEquals("block1", block.tag());
+        assertEquals(1, block.children().size());
+        parameter = (ResponseParameter) block.children().get(0);
+        assertEquals("param1", parameter.key());
+        assertEquals("value1", parameter.value());
+
+        block = (ResponseBlock) body.nodes().get(1);
+        assertEquals("block2", block.tag());
+        assertEquals(2, block.children().size());
+        parameter = (ResponseParameter) block.children().get(0);
+        assertEquals("param2", parameter.key());
+        assertEquals("value2", parameter.value());
+    }
+}