1 files changed, 41 insertions, 0 deletions
diff --git a/src/test/java/derms/net/rmulticast/ReliableMulticastTest.java b/src/test/java/derms/net/rmulticast/ReliableMulticastTest.java
new file mode 100644
index 0000000..9d272d5
--- /dev/null
+++ b/src/test/java/derms/net/rmulticast/ReliableMulticastTest.java
@@ -0,0 +1,41 @@
+package derms.net.rmulticast;
+
+import derms.net.StringMessage;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Timeout;
+
+import java.io.IOException;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.util.concurrent.TimeUnit;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class ReliableMulticastTest {
+    static final InetSocketAddress group = new InetSocketAddress("225.1.2.3", 12345);
+
+    static ReliableMulticast<StringMessage> sock;
+
+    @BeforeAll
+    static void setup() throws IOException {
+        InetAddress laddr = InetAddress.getLocalHost();
+        sock = new ReliableMulticast<StringMessage>(group, laddr);
+    }
+
+    @AfterAll
+    static void teardown() throws IOException {
+        sock.close();
+    }
+
+    // A process should receive its own messages that it sent to the group.
+    @Test
+    @Timeout(value = 3, unit = TimeUnit.SECONDS)
+    void loopback() throws IOException, InterruptedException {
+        StringMessage want = new StringMessage("foo");
+        sock.send(want);
+        StringMessage got = sock.receive();
+        assertEquals(want, got);
+    }
+}