Add some extra safety test to check that external entities are not loaded by xmlbeans

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1617453 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/src/ooxml/testcases/org/apache/poi/xwpf/extractor/TestExternalEntities.java b/src/ooxml/testcases/org/apache/poi/xwpf/extractor/TestExternalEntities.java
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+++ b/src/ooxml/testcases/org/apache/poi/xwpf/extractor/TestExternalEntities.java
@@ -0,0 +1,47 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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 org.apache.poi.xwpf.extractor;
+
+import java.io.IOException;
+
+import junit.framework.TestCase;
+
+import org.apache.poi.xwpf.XWPFTestDataSamples;
+import org.apache.poi.xwpf.usermodel.XWPFDocument;
+
+public class TestExternalEntities extends TestCase {
+
+    /**
+     * Get text out of the simple file
+     * @throws IOException 
+     */
+    public void testFile() throws IOException {
+        XWPFDocument doc = XWPFTestDataSamples.openSampleDocument("ExternalEntityInText.docx");
+        XWPFWordExtractor extractor = new XWPFWordExtractor(doc);
+
+        String text = extractor.getText();
+        
+        assertTrue(text.length() > 0);
+
+        // Check contents, they should not contain the text from POI web site after colon!
+        assertEquals("Here should not be the POI web site: \"\"", text.trim());
+        
+        extractor.close();
+    }
+
+}

diff --git a/test-data/document/ExternalEntityInText.docx b/test-data/document/ExternalEntityInText.docx
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