Use JUnit assert rather than assert keyword

These are turned on by default and can be compiled out entirely for release mode

proguard.config

@@ -51,3 +51,7 @@
 -assumenosideeffects class java.lang.String {
 	public *** format(...);
 }
+
+-assumenosideeffects class junit.framework.Assert {
+	<methods>;
+}

src/org/kreed/vanilla/LibraryActivity.java

@@ -53,6 +53,7 @@ import android.widget.ListView;
 import android.widget.TabWidget;
 import android.widget.TextView;
 import android.widget.Toast;
+import junit.framework.Assert;
 
 /**
  * The library activity where songs to play can be selected from the library.
@@ -411,7 +412,7 @@ public class LibraryActivity extends PlaybackActivity implements AdapterView.OnI
 				if (i == 1) {
 					// generate the artist limiter (we need to query the artist id)
 					MediaAdapter.Limiter limiter = mSongAdapter.getLimiter();
-					assert(limiter.type == MediaUtils.TYPE_ALBUM);
+					Assert.assertEquals(MediaUtils.TYPE_ALBUM, limiter.type);
 
 					ContentResolver resolver = getContentResolver();
 					Uri uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;

src/org/kreed/vanilla/MediaButtonHandler.java

@@ -22,9 +22,6 @@
 
 package org.kreed.vanilla;
 
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
-
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
@@ -34,6 +31,9 @@ import android.os.SystemClock;
 import android.telephony.TelephonyManager;
 import android.util.Log;
 import android.view.KeyEvent;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import junit.framework.Assert;
 
 /**
  * Handle a provided MediaButton event and take the appropriate action in
@@ -225,7 +225,7 @@ public class MediaButtonHandler {
 	 */
 	public void registerMediaButton()
 	{
-		assert(mUseControls == 1);
+		Assert.assertEquals(mUseControls, 1);
 		if (mRegisterMediaButtonEventReceiver != null) {
 			try {
 				mRegisterMediaButtonEventReceiver.invoke(mAudioManager, mButtonReceiver);

src/org/kreed/vanilla/MediaUtils.java

@@ -30,6 +30,7 @@ import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 import java.util.Random;
+import junit.framework.Assert;
 
 public class MediaUtils {
 	/**
@@ -253,7 +254,7 @@ public class MediaUtils {
 	 */
 	public static void shuffle(Song[] list, int end)
 	{
-		assert(end <= list.length && end >= 0);
+		Assert.assertTrue(end <= list.length && end >= 0);
 		Random random = getRandom();
 		for (int i = end; --i != -1; ) {
 			int j = random.nextInt(i + 1);
@@ -457,7 +458,7 @@ public class MediaUtils {
 
 			int count = cursor.getCount();
 			if (count > 0) {
-				assert(count <= RANDOM_POPULATE_SIZE);
+				Assert.assertTrue(count <= RANDOM_POPULATE_SIZE);
 
 				for (int i = 0; i != count; ++i) {
 					cursor.moveToNext();

src/org/kreed/vanilla/SongTimeline.java

@@ -22,6 +22,11 @@
 
 package org.kreed.vanilla;
 
+import android.content.ContentResolver;
+import android.content.Context;
+import android.database.Cursor;
+import android.net.Uri;
+import android.provider.MediaStore;
 import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.EOFException;
@@ -31,12 +36,7 @@ import java.util.Collections;
 import java.util.Comparator;
 import java.util.Iterator;
 import java.util.ListIterator;
-
+import junit.framework.Assert;
-import android.content.ContentResolver;
-import android.content.Context;
-import android.database.Cursor;
-import android.net.Uri;
-import android.provider.MediaStore;
 
 /**
  * Represents a series of songs that can be moved through backward or forward.
@@ -379,7 +379,7 @@ public final class SongTimeline {
 	 */
 	public Song getSong(int delta)
 	{
-		assert(delta >= -1 && delta <= 1);
+		Assert.assertTrue(delta >= -1 && delta <= 1);
 
 		ArrayList<Song> timeline = mSongs;
 		Song song = null;
@@ -435,7 +435,7 @@ public final class SongTimeline {
 	 */
 	public Song shiftCurrentSong(int delta)
 	{
-		assert(delta >= -1 && delta <= 1);
+		Assert.assertTrue(delta >= -1 && delta <= 1);
 
 		synchronized (this) {
 			int pos = mCurrentPos + delta;