Major test-case cleanup.

- Removed JMock dependency, tests rewritten to use Mockito for stub/mock
- All test should now be using JUnit annotation-style tests
- All modules should now depend on same JUnit version
- Rewrote a few tests to better utilize JUnit annotations
- Fixed a few broken tests
- Code style changes

imageio/imageio-reference/src/test/java/com/twelvemonkeys/imageio/reference/JPEGImageReaderTestCase.java

@@ -4,13 +4,14 @@ import com.sun.imageio.plugins.jpeg.JPEGImageReader;
 import com.sun.imageio.plugins.jpeg.JPEGImageReaderSpi;
 import com.twelvemonkeys.imageio.util.ImageReaderAbstractTestCase;
 import com.twelvemonkeys.lang.SystemUtil;
+import org.junit.Test;
 
 import javax.imageio.IIOException;
 import javax.imageio.spi.ImageReaderSpi;
-import java.util.Arrays;
-import java.util.List;
 import java.awt.*;
 import java.io.IOException;
+import java.util.Arrays;
+import java.util.List;
 
 /**
  * JPEGImageReaderTestCase
@@ -67,6 +68,7 @@ public class JPEGImageReaderTestCase extends ImageReaderAbstractTestCase<JPEGIma
         return Arrays.asList(provider.getMIMETypes());
     }
 
+    @Test
     @Override
     public void testSetDestination() throws IOException {
         // Known bug in Sun JPEGImageReader before Java 6
@@ -78,6 +80,7 @@ public class JPEGImageReaderTestCase extends ImageReaderAbstractTestCase<JPEGIma
         }
     }
 
+    @Test
     @Override
     public void testSetDestinationType() throws IOException {
         // Known bug in Sun JPEGImageReader before Java 6
@@ -89,6 +92,7 @@ public class JPEGImageReaderTestCase extends ImageReaderAbstractTestCase<JPEGIma
         }
     }
 
+    @Test
     @Override
     public void testReadAsRenderedImageIndexOutOfBounds() throws IIOException {
         try {

imageio/imageio-reference/src/test/java/com/twelvemonkeys/imageio/reference/PNGImageReaderTestCase.java

@@ -3,6 +3,7 @@ package com.twelvemonkeys.imageio.reference;
 import com.sun.imageio.plugins.png.PNGImageReader;
 import com.sun.imageio.plugins.png.PNGImageReaderSpi;
 import com.twelvemonkeys.imageio.util.ImageReaderAbstractTestCase;
+import org.junit.Test;
 
 import javax.imageio.IIOException;
 import javax.imageio.spi.ImageReaderSpi;
@@ -64,6 +65,7 @@ public class PNGImageReaderTestCase extends ImageReaderAbstractTestCase<PNGImage
         return Arrays.asList(provider.getMIMETypes());
     }
 
+    @Test
     @Override
     public void testSetDestinationTypeIllegal() throws IOException {
         try {