diff --git a/java/proguard.flags b/java/proguard.flags
index 0a5d2dd..829a096 100644
--- a/java/proguard.flags
+++ b/java/proguard.flags
@@ -1,3 +1,8 @@
 -keep class com.android.inputmethod.latin.BinaryDictionary {
   int mDictLength;
+  <init>(...); 
+}
+
+-keep class com.android.inputmethod.latin.Suggest {
+  <init>(...);
 }
diff --git a/java/src/com/android/inputmethod/latin/BinaryDictionary.java b/java/src/com/android/inputmethod/latin/BinaryDictionary.java
index 4901b21..6473f45 100644
--- a/java/src/com/android/inputmethod/latin/BinaryDictionary.java
+++ b/java/src/com/android/inputmethod/latin/BinaryDictionary.java
@@ -68,6 +68,26 @@
         }
     }
 
+    /**
+     * Create a dictionary from a byte buffer. This is used for testing.
+     * @param context application context for reading resources
+     * @param resId the resource containing the raw binary dictionary
+     */
+    public BinaryDictionary(Context context, ByteBuffer byteBuffer) {
+        if (byteBuffer != null) {
+            if (byteBuffer.isDirect()) {
+                mNativeDictDirectBuffer = byteBuffer;
+            } else {
+                mNativeDictDirectBuffer = ByteBuffer.allocateDirect(byteBuffer.capacity());
+                byteBuffer.rewind();
+                mNativeDictDirectBuffer.put(byteBuffer);
+            }
+            mDictLength = byteBuffer.capacity();
+            mNativeDict = openNative(mNativeDictDirectBuffer,
+                    TYPED_LETTER_MULTIPLIER, FULL_WORD_FREQ_MULTIPLIER);
+        }
+    }
+
     private native int openNative(ByteBuffer bb, int typedLetterMultiplier, int fullWordMultiplier);
     private native void closeNative(int dict);
     private native boolean isValidWordNative(int nativeData, char[] word, int wordLength);
diff --git a/java/src/com/android/inputmethod/latin/Suggest.java b/java/src/com/android/inputmethod/latin/Suggest.java
index a70bea0..010913d 100755
--- a/java/src/com/android/inputmethod/latin/Suggest.java
+++ b/java/src/com/android/inputmethod/latin/Suggest.java
@@ -16,18 +16,17 @@
 
 package com.android.inputmethod.latin;
 
+import java.nio.ByteBuffer;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
 import android.content.Context;
 import android.text.AutoText;
 import android.text.TextUtils;
 import android.util.Log;
 import android.view.View;
 
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-
-import com.android.inputmethod.latin.WordComposer;
-
 /**
  * This class loads a dictionary and provides a list of suggestions for a given sequence of 
  * characters. This includes corrections and completions.
@@ -69,9 +68,17 @@
 
     private int mCorrectionMode = CORRECTION_BASIC;
 
-
     public Suggest(Context context, int dictionaryResId) {
         mMainDict = new BinaryDictionary(context, dictionaryResId);
+        initPool();
+    }
+
+    public Suggest(Context context, ByteBuffer byteBuffer) {
+        mMainDict = new BinaryDictionary(context, byteBuffer);
+        initPool();
+    }
+
+    private void initPool() {
         for (int i = 0; i < mPrefMaxSuggestions; i++) {
             StringBuilder sb = new StringBuilder(32);
             mStringPool.add(sb);
diff --git a/java/src/com/android/inputmethod/latin/WordComposer.java b/java/src/com/android/inputmethod/latin/WordComposer.java
index 19f714a..2547aa1 100644
--- a/java/src/com/android/inputmethod/latin/WordComposer.java
+++ b/java/src/com/android/inputmethod/latin/WordComposer.java
@@ -44,7 +44,7 @@
      */
     private boolean mIsCapitalized;
 
-    WordComposer() {
+    public WordComposer() {
         mCodes = new ArrayList<int[]>(12);
         mTypedWord = new StringBuilder(20);
     }