Add test documents from tika test suite

This patch adds a zip of about 200 files from tika's test suite,
and we assert some content comes back from each. This is a good exercise
of the various formats.

I removed any huge files to try to keep size reasonable, but we want
a bit of a variety so we know stuff is working.

I fixed issues with the parser config by running this.

Author: rmuir

src/main/java/org/elasticsearch/mapper/attachments/TikaImpl.java

@@ -29,15 +29,6 @@ final class TikaImpl {
         new org.apache.tika.parser.odf.OpenDocumentParser(),
         new org.apache.tika.parser.iwork.IWorkPackageParser(),
         new org.apache.tika.parser.xml.DcXMLParser(),
-        // images:
-        new org.apache.tika.parser.image.BPGParser(),
-        new org.apache.tika.parser.image.ImageParser(),
-        new org.apache.tika.parser.image.TiffParser(),
-        new org.apache.tika.parser.image.WebPParser(),
-        new org.apache.tika.parser.jpeg.JpegParser(),
-        // compression / packaging:
-        new org.apache.tika.parser.pkg.CompressorParser(),
-        new org.apache.tika.parser.pkg.PackageParser(),
     };
 
     /** autodetector based on this subset */

src/test/java/org/elasticsearch/mapper/attachments/TikaDocTests.java

@@ -0,0 +1,66 @@
+package org.elasticsearch.mapper.attachments;
+
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch 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.
+ */
+
+import java.nio.file.DirectoryStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+import org.apache.lucene.util.LuceneTestCase.SuppressFileSystems;
+import org.apache.lucene.util.TestUtil;
+import org.apache.tika.metadata.Metadata;
+
+import org.elasticsearch.test.ESTestCase;
+
+/** 
+ * Evil test-coverage cheat, we parse a bunch of docs from tika
+ * so that we have a nice grab-bag variety, and assert some content
+ * comes back and no exception.
+ */
+@SuppressFileSystems("ExtrasFS") // don't try to parse extraN
+public class TikaDocTests extends ESTestCase {
+
+    /** some test files from tika test suite, zipped up */
+    static final String TIKA_FILES = "/org/elasticsearch/index/mapper/attachment/test/tika-files.zip";
+
+    public void testFiles() throws Exception {
+        Path tmp = createTempDir();
+        TestUtil.unzip(getClass().getResourceAsStream(TIKA_FILES), tmp);
+        
+        try (DirectoryStream<Path> stream = Files.newDirectoryStream(tmp)) {
+            for (Path doc : stream) {
+              logger.debug("parsing: {}", doc);
+              assertParseable(doc);
+            }
+        }
+    }
+    
+    void assertParseable(Path fileName) throws Exception {
+        try {
+            byte bytes[] = Files.readAllBytes(fileName);
+            String parsedContent = TikaImpl.parse(bytes, new Metadata(), -1);
+            assertNotNull(parsedContent);
+            assertFalse(parsedContent.isEmpty());
+            logger.debug("extracted content: {}", parsedContent);
+        } catch (Throwable e) {
+            throw new RuntimeException("parsing of filename: " + fileName.getFileName() + " failed", e);  
+        }
+    }
+}