Fixes issue 3

src/test/java/org/xerial/snappy/SnappyInputStreamTest.java

@@ -0,0 +1,76 @@
+/*--------------------------------------------------------------------------
+ *  Copyright 2011 Taro L. Saito
+ *
+ *  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.
+ *--------------------------------------------------------------------------*/
+//--------------------------------------
+// XerialJ
+//
+// SnappyInputStreamTest.java
+// Since: 2011/03/31 22:31:51
+//
+// $URL$
+// $Author$
+//--------------------------------------
+package org.xerial.snappy;
+
+import static org.junit.Assert.*;
+
+import java.io.BufferedInputStream;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+import org.junit.Test;
+import org.xerial.util.FileResource;
+import org.xerial.util.log.Logger;
+
+public class SnappyInputStreamTest
+{
+    private static Logger _logger = Logger.getLogger(SnappyInputStreamTest.class);
+
+    public static byte[] readResourceFile(String fileName) throws IOException {
+        BufferedInputStream input = FileResource.openByteStream(SnappyOutputStreamTest.class, fileName);
+        assertNotNull(input);
+        return readFully(input);
+    }
+
+    public static byte[] readFully(InputStream input) throws IOException {
+        ByteArrayOutputStream out = new ByteArrayOutputStream();
+        byte[] buf = new byte[4096];
+        for (int readBytes = 0; (readBytes = input.read(buf)) != -1;) {
+            out.write(buf, 0, readBytes);
+        }
+        out.flush();
+        return out.toByteArray();
+    }
+
+    @Test
+    public void read() throws Exception {
+        ByteArrayOutputStream compressedBuf = new ByteArrayOutputStream();
+        SnappyOutputStream snappyOut = new SnappyOutputStream(compressedBuf);
+        byte[] orig = readResourceFile("alice29.txt");
+        snappyOut.write(orig);
+        snappyOut.close();
+        byte[] compressed = compressedBuf.toByteArray();
+        _logger.debug("compressed size: " + compressed.length);
+
+        SnappyInputStream in = new SnappyInputStream(new ByteArrayInputStream(compressed));
+        byte[] uncompressed = readFully(in);
+
+        assertEquals(orig.length, uncompressed.length);
+        assertArrayEquals(orig, uncompressed);
+
+    }
+}