diff --git a/src/test/java/com/github/nkzawa/engineio/client/ExecutionTest.java b/src/test/java/com/github/nkzawa/engineio/client/ExecutionTest.java
new file mode 100644
index 0000000..244b383
--- /dev/null
+++ b/src/test/java/com/github/nkzawa/engineio/client/ExecutionTest.java
@@ -0,0 +1,46 @@
+package com.github.nkzawa.engineio.client;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.junit.Assert.assertThat;
+
+@RunWith(JUnit4.class)
+public class ExecutionTest extends Connection {
+
+    final static int TIMEOUT = 30 * 1000;
+
+    @Test(timeout = TIMEOUT)
+    public void execConnection() throws InterruptedException, IOException {
+        exec("com.github.nkzawa.engineio.client.executions.Connection");
+    }
+
+    @Test(timeout = TIMEOUT)
+    public void execConnectionFailure() throws InterruptedException, IOException {
+        exec("com.github.nkzawa.engineio.client.executions.ConnectionFailure");
+    }
+
+    @Test(timeout = TIMEOUT)
+    public void execImmediateClose() throws InterruptedException, IOException {
+        exec("com.github.nkzawa.engineio.client.executions.ImmediateClose");
+    }
+
+    private void exec(String mainClass) throws InterruptedException, IOException {
+        Process process = Runtime.getRuntime().exec(String.format("mvn --quiet exec:java" +
+                " -Dexec.mainClass=%s -Dexec.classpathScope=test", mainClass), createEnv());
+        BufferedReader input = new BufferedReader(
+                new InputStreamReader(process.getInputStream()));
+        String line;
+        while ((line = input.readLine()) != null) {
+            System.out.println("EXEC OUT: " + line);
+        }
+        process.waitFor();
+        assertThat(process.exitValue(), is(0));
+    }
+}
diff --git a/src/test/java/com/github/nkzawa/engineio/client/executions/Connection.java b/src/test/java/com/github/nkzawa/engineio/client/executions/Connection.java
new file mode 100644
index 0000000..371ff1c
--- /dev/null
+++ b/src/test/java/com/github/nkzawa/engineio/client/executions/Connection.java
@@ -0,0 +1,23 @@
+package com.github.nkzawa.engineio.client.executions;
+
+import com.github.nkzawa.emitter.Emitter;
+import com.github.nkzawa.engineio.client.Socket;
+
+import java.net.URISyntaxException;
+import java.util.Map;
+
+public class Connection {
+
+    public static void main(String[] args) throws URISyntaxException {
+        Map<String, String> env = System.getenv();
+        final Socket socket = new Socket("http://localhost:" + env.get("PORT"));
+        socket.on(Socket.EVENT_OPEN, new Emitter.Listener() {
+            @Override
+            public void call(Object... args) {
+                System.out.println("open");
+                socket.close();
+            }
+        });
+        socket.open();
+    }
+}
diff --git a/src/test/java/com/github/nkzawa/engineio/client/executions/ConnectionFailure.java b/src/test/java/com/github/nkzawa/engineio/client/executions/ConnectionFailure.java
new file mode 100644
index 0000000..371564c
--- /dev/null
+++ b/src/test/java/com/github/nkzawa/engineio/client/executions/ConnectionFailure.java
@@ -0,0 +1,29 @@
+package com.github.nkzawa.engineio.client.executions;
+
+import com.github.nkzawa.emitter.Emitter;
+import com.github.nkzawa.engineio.client.Socket;
+
+import java.net.URISyntaxException;
+import java.util.Map;
+
+public class ConnectionFailure {
+
+    public static void main(String[] args) throws URISyntaxException {
+        Map<String, String> env = System.getenv();
+        int port = Integer.parseInt(env.get("PORT"));
+        port++;
+        final Socket socket = new Socket("http://localhost:" + port);
+        socket.on(Socket.EVENT_CLOSE, new Emitter.Listener() {
+            @Override
+            public void call(Object... args) {
+                System.out.println("close");
+            }
+        }).on(Socket.EVENT_ERROR, new Emitter.Listener() {
+            @Override
+            public void call(Object... args) {
+                System.out.println("error");
+            }
+        });
+        socket.open();
+    }
+}
diff --git a/src/test/java/com/github/nkzawa/engineio/client/executions/ImmediateClose.java b/src/test/java/com/github/nkzawa/engineio/client/executions/ImmediateClose.java
new file mode 100644
index 0000000..b5983ec
--- /dev/null
+++ b/src/test/java/com/github/nkzawa/engineio/client/executions/ImmediateClose.java
@@ -0,0 +1,28 @@
+package com.github.nkzawa.engineio.client.executions;
+
+import com.github.nkzawa.emitter.Emitter;
+import com.github.nkzawa.engineio.client.Socket;
+
+import java.net.URISyntaxException;
+import java.util.Map;
+
+public class ImmediateClose {
+
+    public static void main(String[] args) throws URISyntaxException {
+        Map<String, String> env = System.getenv();
+        final Socket socket = new Socket("http://localhost:" + env.get("PORT"));
+        socket.on(Socket.EVENT_OPEN, new Emitter.Listener() {
+            @Override
+            public void call(Object... args) {
+                System.out.println("open");
+            }
+        }).on(Socket.EVENT_CLOSE, new Emitter.Listener() {
+            @Override
+            public void call(Object... args) {
+                System.out.println("close");
+            }
+        });
+        socket.open();
+        socket.close();
+    }
+}