Test SOCKS4 client: no response to connect

core/java/test/junit/net/i2p/socks/SOCKS4ClientTest.java

@@ -74,6 +74,20 @@ public class SOCKS4ClientTest {
         assertArrayEquals(expectedByteStream.toByteArray(), ops.toByteArray());
     }
 
+    /**
+     * Run into IOException while trying to connect due to no input/response
+     */
+    @Test
+    public void connect__ioException() {
+        assertThrows(IOException.class, () -> {
+            SOCKS4Client.connect(
+                new ByteArrayInputStream(new byte[]{}),
+                new ByteArrayOutputStream(),
+                "127.0.0.1",
+                80);
+        });
+    }
+
     /**
      * IPv6 is not supported by this SOCKS client so it just throws an exception
      */