diff --git a/broker/src/test/java/io/moquette/server/config/ClasspathConfigTest.java b/broker/src/test/java/io/moquette/server/config/ClasspathConfigTest.java
new file mode 100644
index 00000000..3f3cb66a
--- /dev/null
+++ b/broker/src/test/java/io/moquette/server/config/ClasspathConfigTest.java
@@ -0,0 +1,19 @@
+package io.moquette.server.config;
+
+import static org.junit.Assert.*;
+
+import org.junit.Test;
+
+import io.moquette.BrokerConstants;
+
+public class ClasspathConfigTest {
+
+	@Test
+	public void testSetProperties() {
+		final IConfig classPathConfig = new ClasspathConfig();
+        assertEquals(""+BrokerConstants.PORT,classPathConfig.getProperty(BrokerConstants.PORT_PROPERTY_NAME));
+        classPathConfig.setProperty(BrokerConstants.PORT_PROPERTY_NAME, "9999");
+        assertEquals("9999",classPathConfig.getProperty(BrokerConstants.PORT_PROPERTY_NAME));
+	}
+
+}