RM-5837 Finish off test and add util to extract JSON.

Use two folders, as copying a file and a folder always passes
even with the old code.

rm-automation/rm-automation-community-rest-api/src/main/java/org/alfresco/rest/core/v0/APIUtils.java

@@ -0,0 +1,73 @@
+/*
+ * #%L
+ * Alfresco Records Management Module
+ * %%
+ * Copyright (C) 2005 - 2017 Alfresco Software Limited
+ * %%
+ * This file is part of the Alfresco software.
+ * -
+ * If the software was purchased under a paid Alfresco license, the terms of
+ * the paid license agreement will prevail.  Otherwise, the software is
+ * provided under the following open source license terms:
+ * -
+ * Alfresco is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * -
+ * Alfresco is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ * -
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
+ * #L%
+ */
+package org.alfresco.rest.core.v0;
+
+import java.io.IOException;
+
+import org.apache.commons.io.IOUtils;
+import org.apache.http.HttpResponse;
+import org.json.JSONObject;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Helper methods for use with REST APIs.
+ *
+ * @author Tom Page
+ * @since 2.6
+ */
+public class APIUtils
+{
+    /** Logger for this class. */
+    private static final Logger LOGGER = LoggerFactory.getLogger(APIUtils.class);
+
+    /** Private constructor for helper class. */
+    private APIUtils()
+    {
+    }
+
+    /**
+     * Extract the body of a HTTP response as a JSON object.
+     *
+     * @param httpResponse The HTTP response.
+     * @return A JSON representation of the object.
+     */
+    public static JSONObject convertHTTPResponseToJSON(HttpResponse httpResponse)
+    {
+        String source = null;
+        try
+        {
+            source = IOUtils.toString(httpResponse.getEntity().getContent(), "UTF-8");
+        }
+        catch (IOException e)
+        {
+            throw new IllegalArgumentException("Could not extract JSON from HTTP response.", e);
+        }
+        LOGGER.info("Response body:\n{}", source);
+        return new JSONObject(source);
+    }
+}