Fix invalidUri test, crappy url format should be supported

Author: Stephane Landelle

api/src/main/java/org/asynchttpclient/RequestBuilderBase.java

@@ -373,6 +373,8 @@ public T setUrl(String url) {
     }
 
     public T setURI(URI uri) {
+        if (uri.getPath() == null)
+            throw new IllegalArgumentException("Unsupported uri format: " + uri);
         request.originalUri = uri;
         addQueryParameters(request.originalUri);
         request.uri = null;

api/src/test/java/org/asynchttpclient/async/AsyncProvidersBasicTest.java

@@ -1556,12 +1556,11 @@ public void headShouldNotAllowBody() throws IllegalArgumentException, IOExceptio
         }
     }
 
-    @Test(groups = { "standalone", "default_provider" })
+    @Test(groups = { "standalone", "default_provider" }, expectedExceptions = { IllegalArgumentException.class })
     public void invalidUri() throws Exception {
         AsyncHttpClient client = getAsyncHttpClient(null);
         try {
-            Response response = client.executeRequest(client.prepareGet(String.format("http:127.0.0.1:%d/foo/test", port1)).build()).get();
-            assertEquals(200, response.getStatusCode());
+            client.prepareGet(String.format("http:127.0.0.1:%d/foo/test", port1)).build();
         } finally {
             client.close();
         }