r27280 - trunk/freenet/test/freenet/support

Author: j16sdiz
Date: 2009-04-24 04:28:49 +0000 (Fri, 24 Apr 2009)
New Revision: 27280

Added:
   trunk/freenet/test/freenet/support/ShortBufferTest.java
Modified:
   trunk/freenet/test/freenet/support/BufferTest.java
Log:
New ShortBufferTest based on BufferTest

Modified: trunk/freenet/test/freenet/support/BufferTest.java
===================================================================
--- trunk/freenet/test/freenet/support/BufferTest.java	2009-04-24 04:17:44 UTC (rev 27279)
+++ trunk/freenet/test/freenet/support/BufferTest.java	2009-04-24 04:28:49 UTC (rev 27280)
@@ -112,14 +112,6 @@
 		String longString = buffer.toString();
 		assertEquals("Buffer {" + buffer.getLength() + "}", longString);
 	}
-
-	public void testShortBufferToString() {
-		String shortString = "feep";
-		Buffer shortBuffer = new Buffer(shortString.getBytes());
-		
-		String outString = shortBuffer.toString();
-		assertEquals(outString, "{4:102 101 101 112 "); // FIXME: final brace?
-	}
 	
 	public void testEquals() {
 		

Copied: trunk/freenet/test/freenet/support/ShortBufferTest.java (from rev 27279, trunk/freenet/test/freenet/support/BufferTest.java)
===================================================================
--- trunk/freenet/test/freenet/support/ShortBufferTest.java	                        (rev 0)
+++ trunk/freenet/test/freenet/support/ShortBufferTest.java	2009-04-24 04:28:49 UTC (rev 27280)
@@ -0,0 +1,163 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+package freenet.support;
+
+import java.io.ByteArrayInputStream;
+import java.io.DataInputStream;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+
+import junit.framework.TestCase;
+
+/**
+ * Test case for {@link freenet.support.ShortBuffer} class.
+ * 
+ * @author stuart martin <[email protected]>
+ * @author Daniel Cheng <[email protected]>
+ */
+public class ShortBufferTest extends TestCase {
+
+	private static final String DATA_STRING_1 = "asldkjaskjdsakdhasdhaskjdhaskjhbkasbhdjkasbduiwbxgdoudgboewuydxbybuewyxbuewyuwe" + 
+		"dasdkljasndijwnodhnqweoidhnaouidhbnwoduihwnxodiuhnwuioxdhnwqiouhnxwqoiushdnxwqoiudhxnwqoiudhxni";
+	
+	public void testByteArrayShortBuffer() {
+		
+		byte[] data = DATA_STRING_1.getBytes();
+		
+		ShortBuffer buffer = new ShortBuffer(data);
+		
+		assertEquals(data, buffer.getData());
+
+		doTestShortBuffer(data, buffer);
+	}
+
+	public void testByteArrayIndexShortBuffer() {
+		
+		// get content
+		byte[] data = DATA_STRING_1.getBytes();
+		
+		byte[] dataSub = new byte[5];
+		
+		// prepare 'substring'
+		System.arraycopy(data, 4, dataSub, 0, 5);
+
+		ShortBuffer buffer = new ShortBuffer(data, 4, 5);
+		
+		assertFalse(dataSub.equals(buffer.getData()));
+
+		doTestShortBuffer(dataSub, buffer);
+	}
+
+	
+	public void testDataInputStreamShortBuffer() {
+		
+		byte[] data = DATA_STRING_1.getBytes();   // get some content
+		
+		byte[] data2 = new byte[data.length + 2]; // make room for 4 byte length indicator  
+		
+		int length = DATA_STRING_1.getBytes().length;
+		
+		// populate length as first 4 bytes
+		data2[0] = (byte)((length & 0xff00)     >>  8);
+		data2[1] = (byte)((length & 0xff)            );
+		
+		System.arraycopy(data, 0, data2, 2, data.length); // populate rest of content
+		
+		DataInputStream dis = new DataInputStream(new ByteArrayInputStream(data2));
+		ShortBuffer buffer = null;
+		
+		try {
+			buffer = new ShortBuffer(dis);
+		} catch (IOException e) {
+			fail("unexpected exception: " + e.getMessage());
+		}
+		// perform rest of test with the *original* array because ShortBuffer(DataInputStream) chomps first 4 bytes
+		doTestShortBuffer(data, buffer);
+	}
+	
+	private void doTestShortBuffer(byte[] data, ShortBuffer buffer) {
+		assertEquals(data.length, buffer.getLength());
+		
+		for(int i = 0; i < buffer.getLength(); i++) {
+			assertEquals(data[i], buffer.byteAt(i));
+		}
+		
+		try{
+			buffer.byteAt(data.length + 1); // expect exception
+			fail();
+		}
+		catch(ArrayIndexOutOfBoundsException e) {
+			// expect this
+		}
+	}
+
+	public void testShortBufferToString() {
+		String shortString = "feep";
+		ShortBuffer shortShortBuffer = new ShortBuffer(shortString.getBytes());
+		
+		String outString = shortShortBuffer.toString();
+		assertEquals(outString, "{4:102 101 101 112 "); // FIXME: final brace?
+	}
+	
+	public void testEquals() {
+		ShortBuffer b1 = new ShortBuffer("ShortBuffer1".getBytes());
+		ShortBuffer b2 = new ShortBuffer("ShortBuffer2".getBytes());
+		ShortBuffer b3 = new ShortBuffer("ShortBuffer1".getBytes());
+		
+		assertFalse(b1.equals(b2));
+		assertTrue(b1.equals(b3));
+		assertFalse(b2.equals(b3));
+		assertTrue(b1.equals(b1));
+		assertTrue(b2.equals(b2));
+		assertTrue(b3.equals(b1));				
+	}
+	
+	public void testHashcode() {
+		
+		ShortBuffer b1 = new ShortBuffer("ShortBuffer1".getBytes());
+		ShortBuffer b2 = new ShortBuffer("ShortBuffer2".getBytes());
+		ShortBuffer b3 = new ShortBuffer("ShortBuffer1".getBytes());
+		
+		Map<ShortBuffer, ShortBuffer> hashMap = new HashMap<ShortBuffer, ShortBuffer>();
+		
+		hashMap.put(b1, b1); 
+		hashMap.put(b2, b2);
+		hashMap.put(b3, b3); // should clobber b1 due to content
+
+		// see if b3 survived
+		Object o = hashMap.get(b3);
+		assertFalse(o == b1);
+		assertTrue(o == b3);
+		
+		// see if b1 survived
+		o = hashMap.get(b1);
+		assertFalse(o == b1);		
+		assertTrue(o == b3);
+	}
+	
+	public void testCopy() {
+		byte[] oldBuf = DATA_STRING_1.getBytes();
+		ShortBuffer b = new ShortBuffer(oldBuf);
+		
+		byte[] newBuf = new byte[b.getLength()];
+		b.copyTo(newBuf, 0);
+		
+		for(int i = 0; i < oldBuf.length; i++) {
+			assertEquals(newBuf[i], oldBuf[i]);
+		}
+	}
+}