Fix TooManyConnectionsException message and test

Author: slandelle

client/src/main/java/org/asynchttpclient/netty/channel/exception/TooManyConnectionsException.java

@@ -18,6 +18,6 @@
 public class TooManyConnectionsException extends IOException {
 
     public TooManyConnectionsException(int max) {
-        super("Too many connections per host " + max);
+        super("Too many connections: " + max);
     }
 }

client/src/main/java/org/asynchttpclient/netty/channel/exception/TooManyConnectionsPerHostException.java

@@ -18,6 +18,6 @@
 public class TooManyConnectionsPerHostException extends IOException {
 
     public TooManyConnectionsPerHostException(int max) {
-        super("Too many connections " + max);
+        super("Too many connections: " + max);
     }
 }

client/src/test/java/org/asynchttpclient/channel/pool/ConnectionPoolTest.java

@@ -37,6 +37,7 @@
 import org.asynchttpclient.ListenableFuture;
 import org.asynchttpclient.RequestBuilder;
 import org.asynchttpclient.Response;
+import org.asynchttpclient.netty.channel.exception.TooManyConnectionsException;
 import org.asynchttpclient.test.EventCollectingHandler;
 import org.testng.annotations.Test;
 
@@ -61,8 +62,8 @@ public void testMaxTotalConnections() throws Exception {
         }
     }
 
-    @Test(groups = "standalone")
-    public void testMaxTotalConnectionsException() throws IOException {
+    @Test(groups = "standalone", expectedExceptions = TooManyConnectionsException.class)
+    public void testMaxTotalConnectionsException() throws Throwable {
         try (AsyncHttpClient client = asyncHttpClient(config().setKeepAlive(true).setMaxConnections(1))) {
             String url = getTargetUrl();
 
@@ -83,8 +84,7 @@ public void testMaxTotalConnectionsException() throws IOException {
             }
 
             assertNotNull(exception);
-            assertNotNull(exception.getCause());
-            assertEquals(exception.getCause().getMessage(), "Too many connections 1");
+            throw exception.getCause();
         }
     }
 
@@ -124,8 +124,8 @@ public Response onCompleted(Response response) throws Exception {
         }
     }
 
-    @Test(groups = "standalone")
-    public void multipleMaxConnectionOpenTest() throws Exception {
+    @Test(groups = "standalone", expectedExceptions = TooManyConnectionsException.class)
+    public void multipleMaxConnectionOpenTest() throws Throwable {
         try (AsyncHttpClient c = asyncHttpClient(config().setKeepAlive(true).setConnectTimeout(5000).setMaxConnections(1))) {
             String body = "hello there";
 
@@ -144,8 +144,7 @@ public void multipleMaxConnectionOpenTest() throws Exception {
                 exception = ex;
             }
             assertNotNull(exception);
-            assertNotNull(exception.getCause());
-            assertEquals(exception.getCause().getMessage(), "Too many connections 1");
+            throw exception.getCause();
         }
     }