Add acceptance tests for group creation via REST

Change-Id: I606af16e34fda221a1c8834d995bffb744b8d3a1
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>

gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/RestResponse.java

@@ -0,0 +1,42 @@
+// Copyright (C) 2013 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.gerrit.acceptance;
+
+import static com.google.gerrit.httpd.restapi.RestApiServlet.JSON_MAGIC;
+
+import org.apache.http.HttpResponse;
+
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.Reader;
+
+public class RestResponse {
+
+  private HttpResponse response;
+
+  RestResponse(HttpResponse response) {
+    this.response = response;
+  }
+
+  public Reader getReader() throws IllegalStateException, IOException {
+    Reader reader = new InputStreamReader(response.getEntity().getContent());
+    reader.skip(JSON_MAGIC.length);
+    return reader;
+  }
+
+  public int getStatusCode() {
+    return response.getStatusLine().getStatusCode();
+  }
+}