diff --git a/java/src/com/android/inputmethod/latin/BinaryDictionary.java b/java/src/com/android/inputmethod/latin/BinaryDictionary.java
index 7ec964d..6b2b123 100644
--- a/java/src/com/android/inputmethod/latin/BinaryDictionary.java
+++ b/java/src/com/android/inputmethod/latin/BinaryDictionary.java
@@ -216,7 +216,7 @@
             long newFormatVersion);
 
     // TODO: Move native dict into session
-    private final void loadDictionary(final String path, final long startOffset,
+    private void loadDictionary(final String path, final long startOffset,
             final long length, final boolean isUpdatable) {
         mHasUpdated = false;
         mNativeDict = openNative(path, startOffset, length, isUpdatable);
@@ -487,23 +487,6 @@
         return true;
     }
 
-    // Remove an n-gram entry from the binary dictionary in native code.
-    public boolean removeNgramEntry(final NgramContext ngramContext, final String word) {
-        if (!ngramContext.isValid() || TextUtils.isEmpty(word)) {
-            return false;
-        }
-        final int[][] prevWordCodePointArrays = new int[ngramContext.getPrevWordCount()][];
-        final boolean[] isBeginningOfSentenceArray = new boolean[ngramContext.getPrevWordCount()];
-        ngramContext.outputToArray(prevWordCodePointArrays, isBeginningOfSentenceArray);
-        final int[] wordCodePoints = StringUtils.toCodePointArray(word);
-        if (!removeNgramEntryNative(mNativeDict, prevWordCodePointArrays,
-                isBeginningOfSentenceArray, wordCodePoints)) {
-            return false;
-        }
-        mHasUpdated = true;
-        return true;
-    }
-
     // Update entries for the word occurrence with the ngramContext.
     public boolean updateEntriesForWordWithNgramContext(@Nonnull final NgramContext ngramContext,
             final String word, final boolean isValidWord, final int count, final int timestamp) {
diff --git a/java/src/com/android/inputmethod/latin/utils/BinaryDictionaryUtils.java b/java/src/com/android/inputmethod/latin/utils/BinaryDictionaryUtils.java
index 892b967..3bf9c62 100644
--- a/java/src/com/android/inputmethod/latin/utils/BinaryDictionaryUtils.java
+++ b/java/src/com/android/inputmethod/latin/utils/BinaryDictionaryUtils.java
@@ -40,6 +40,7 @@
         JniUtils.loadNativeLibrary();
     }
 
+    @UsedForTesting
     private static native boolean createEmptyDictFileNative(String filePath, long dictVersion,
             String locale, String[] attributeKeyStringArray, String[] attributeValueStringArray);
     private static native float calcNormalizedScoreNative(int[] before, int[] after, int score);
diff --git a/tests/src/com/android/inputmethod/keyboard/KeyboardLayoutTest.java b/tests/src/com/android/inputmethod/keyboard/KeyboardLayoutTest.java
index 733bf96..1e1f82f 100644
--- a/tests/src/com/android/inputmethod/keyboard/KeyboardLayoutTest.java
+++ b/tests/src/com/android/inputmethod/keyboard/KeyboardLayoutTest.java
@@ -27,8 +27,6 @@
 @SmallTest
 public class KeyboardLayoutTest {
 
-    private KeyboardLayout mKeyboardLayout;
-
     @Test
     public void testNewKeyboardLayout() {
         KeyboardLayout keyboardLayout = KeyboardLayout
diff --git a/tests/src/com/android/inputmethod/latin/BinaryDictionaryTests.java b/tests/src/com/android/inputmethod/latin/BinaryDictionaryTests.java
index 1618798..7eccd4d 100644
--- a/tests/src/com/android/inputmethod/latin/BinaryDictionaryTests.java
+++ b/tests/src/com/android/inputmethod/latin/BinaryDictionaryTests.java
@@ -39,7 +39,6 @@
 import java.util.Locale;
 import java.util.Random;
 
-// TODO Use the seed passed as an argument for makedict test.
 @LargeTest
 public class BinaryDictionaryTests extends AndroidTestCase {
     private static final String TEST_DICT_FILE_EXTENSION = ".testDict";
@@ -214,10 +213,9 @@
 
     private static void addTrigramEntry(final BinaryDictionary binaryDictionary, final String word0,
             final String word1, final String word2, final int probability) {
-        final NgramContext ngramContext =
-                new NgramContext(new WordInfo[] { new WordInfo(word1), new WordInfo(word0) } );
-        binaryDictionary.addNgramEntry(ngramContext, word2, probability,
-                BinaryDictionary.NOT_A_VALID_TIMESTAMP /* timestamp */);
+        binaryDictionary.addNgramEntry(
+                new NgramContext(new WordInfo(word1), new WordInfo(word0)), word2,
+                probability, BinaryDictionary.NOT_A_VALID_TIMESTAMP /* timestamp */);
     }
 
     private static boolean isValidBigram(final BinaryDictionary binaryDictionary,
@@ -225,18 +223,6 @@
         return binaryDictionary.isValidNgram(new NgramContext(new WordInfo(word0)), word1);
     }
 
-    private static void removeBigramEntry(final BinaryDictionary binaryDictionary,
-            final String word0, final String word1) {
-        binaryDictionary.removeNgramEntry(new NgramContext(new WordInfo(word0)), word1);
-    }
-
-    private static void removeTrigramEntry(final BinaryDictionary binaryDictionary,
-            final String word0, final String word1, final String word2) {
-        final NgramContext ngramContext =
-                new NgramContext(new WordInfo[] { new WordInfo(word1), new WordInfo(word0) } );
-        binaryDictionary.removeNgramEntry(ngramContext, word2);
-    }
-
     private static int getBigramProbability(final BinaryDictionary binaryDictionary,
             final String word0,  final String word1) {
         return binaryDictionary.getNgramProbability(new NgramContext(new WordInfo(word0)), word1);
@@ -244,9 +230,8 @@
 
     private static int getTrigramProbability(final BinaryDictionary binaryDictionary,
             final String word0, final String word1, final String word2) {
-        final NgramContext ngramContext =
-                new NgramContext(new WordInfo[] { new WordInfo(word1), new WordInfo(word0) } );
-        return binaryDictionary.getNgramProbability(ngramContext, word2);
+        return binaryDictionary.getNgramProbability(
+                new NgramContext(new WordInfo(word1), new WordInfo(word0)), word2);
     }
 
     public void testAddUnigramWord() {
@@ -421,48 +406,6 @@
         }
     }
 
-    public void testRemoveBigramWords() {
-        for (final int formatVersion : DICT_FORMAT_VERSIONS) {
-            testRemoveBigramWords(formatVersion);
-        }
-    }
-
-    private void testRemoveBigramWords(final int formatVersion) {
-        final BinaryDictionary binaryDictionary = getEmptyBinaryDictionary(formatVersion);
-        final int unigramProbability = 100;
-        final int bigramProbability = 150;
-        addUnigramWord(binaryDictionary, "aaa", unigramProbability);
-        addUnigramWord(binaryDictionary, "abb", unigramProbability);
-        addUnigramWord(binaryDictionary, "bcc", unigramProbability);
-        addBigramWords(binaryDictionary, "aaa", "abb", bigramProbability);
-        addBigramWords(binaryDictionary, "aaa", "bcc", bigramProbability);
-        addBigramWords(binaryDictionary, "abb", "aaa", bigramProbability);
-        addBigramWords(binaryDictionary, "abb", "bcc", bigramProbability);
-
-        assertTrue(isValidBigram(binaryDictionary, "aaa", "abb"));
-        assertTrue(isValidBigram(binaryDictionary, "aaa", "bcc"));
-        assertTrue(isValidBigram(binaryDictionary, "abb", "aaa"));
-        assertTrue(isValidBigram(binaryDictionary, "abb", "bcc"));
-
-        removeBigramEntry(binaryDictionary, "aaa", "abb");
-        assertFalse(isValidBigram(binaryDictionary, "aaa", "abb"));
-        addBigramWords(binaryDictionary, "aaa", "abb", bigramProbability);
-        assertTrue(isValidBigram(binaryDictionary, "aaa", "abb"));
-
-
-        removeBigramEntry(binaryDictionary, "aaa", "bcc");
-        assertFalse(isValidBigram(binaryDictionary, "aaa", "bcc"));
-        removeBigramEntry(binaryDictionary, "abb", "aaa");
-        assertFalse(isValidBigram(binaryDictionary, "abb", "aaa"));
-        removeBigramEntry(binaryDictionary, "abb", "bcc");
-        assertFalse(isValidBigram(binaryDictionary, "abb", "bcc"));
-
-        removeBigramEntry(binaryDictionary, "aaa", "abb");
-        // Test remove non-existing bigram operation.
-        removeBigramEntry(binaryDictionary, "aaa", "abb");
-        removeBigramEntry(binaryDictionary, "bcc", "aaa");
-    }
-
     public void testAddTrigramWords() {
         for (final int formatVersion : DICT_FORMAT_VERSIONS) {
             if (supportsNgram(formatVersion)) {
@@ -495,11 +438,6 @@
         addTrigramEntry(binaryDictionary, "bcc", "abb", "aaa", updatedTrigramProbability);
         assertEquals(updatedTrigramProbability,
                 getTrigramProbability(binaryDictionary, "bcc", "abb", "aaa"));
-
-        removeTrigramEntry(binaryDictionary, "aaa", "abb", "bcc");
-        assertEquals(Dictionary.NOT_A_PROBABILITY,
-                getTrigramProbability(binaryDictionary, "aaa", "abb", "bcc"));
-        assertTrue(isValidBigram(binaryDictionary, "abb", "bcc"));
     }
 
     public void testFlushDictionary() {
@@ -655,7 +593,6 @@
         final int initialUnigramCount = 100;
         final float addUnigramProb = 0.5f;
         final float addBigramProb = 0.8f;
-        final float removeBigramProb = 0.2f;
         final int codePointSetSize = 30;
 
         final long seed = System.currentTimeMillis();
@@ -710,14 +647,6 @@
                     bigramProbabilities.put(bigram, bigramProbability);
                     addBigramWords(binaryDictionary, word0, word1, bigramProbability);
                 }
-                // Remove bigram.
-                if (random.nextFloat() < removeBigramProb && !bigramWords.isEmpty()) {
-                    final int bigramIndex = random.nextInt(bigramWords.size());
-                    final Pair<String, String> bigram = bigramWords.get(bigramIndex);
-                    bigramWords.remove(bigramIndex);
-                    bigramProbabilities.remove(bigram);
-                    removeBigramEntry(binaryDictionary, bigram.first, bigram.second);
-                }
             }
 
             // Test whether the all unigram operations are collectlly handled.
@@ -731,8 +660,7 @@
                 final Pair<String, String> bigram = bigramWords.get(i);
                 final int probability;
                 if (bigramProbabilities.containsKey(bigram)) {
-                    final int bigramProbability = bigramProbabilities.get(bigram);
-                    probability = bigramProbability;
+                    probability = bigramProbabilities.get(bigram);
                 } else {
                     probability = Dictionary.NOT_A_PROBABILITY;
                 }
@@ -1051,7 +979,6 @@
         addUnigramWord(binaryDictionary, "bbb", unigramProbability);
         final int bigramProbability = 150;
         addBigramWords(binaryDictionary, "aaa", "bbb", bigramProbability);
-        final int shortcutProbability = 10;
         binaryDictionary.addUnigramEntry("ccc", unigramProbability,
                 false /* isBeginningOfSentence */, false /* isNotAWord */,
                 false /* isPossiblyOffensive */, 0 /* timestamp */);
diff --git a/tests/src/com/android/inputmethod/latin/makedict/BinaryDictDecoderEncoderTests.java b/tests/src/com/android/inputmethod/latin/makedict/BinaryDictDecoderEncoderTests.java
deleted file mode 100644
index 39da9fc..0000000
--- a/tests/src/com/android/inputmethod/latin/makedict/BinaryDictDecoderEncoderTests.java
+++ /dev/null
@@ -1,677 +0,0 @@
-/*
- * Copyright (C) 2012 The Android Open Source Project
- *
- * 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.
- */
-
-package com.android.inputmethod.latin.makedict;
-
-import android.test.AndroidTestCase;
-import android.test.suitebuilder.annotation.LargeTest;
-import android.util.Log;
-import android.util.Pair;
-import android.util.SparseArray;
-
-import com.android.inputmethod.latin.BinaryDictionary;
-import com.android.inputmethod.latin.common.CodePointUtils;
-import com.android.inputmethod.latin.makedict.BinaryDictDecoderUtils.CharEncoding;
-import com.android.inputmethod.latin.makedict.BinaryDictDecoderUtils.DictBuffer;
-import com.android.inputmethod.latin.makedict.FormatSpec.FormatOptions;
-import com.android.inputmethod.latin.makedict.FusionDictionary.PtNode;
-import com.android.inputmethod.latin.makedict.FusionDictionary.PtNodeArray;
-import com.android.inputmethod.latin.utils.BinaryDictionaryUtils;
-import com.android.inputmethod.latin.utils.ByteArrayDictBuffer;
-
-import java.io.File;
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Locale;
-import java.util.Map.Entry;
-import java.util.Random;
-import java.util.Set;
-import java.util.TreeMap;
-
-/**
- * Unit tests for BinaryDictDecoderUtils and BinaryDictEncoderUtils.
- */
-@LargeTest
-public class BinaryDictDecoderEncoderTests extends AndroidTestCase {
-    private static final String TAG = BinaryDictDecoderEncoderTests.class.getSimpleName();
-    private static final int DEFAULT_MAX_UNIGRAMS = 300;
-    private static final int DEFAULT_CODE_POINT_SET_SIZE = 50;
-    private static final int LARGE_CODE_POINT_SET_SIZE = 300;
-    private static final int UNIGRAM_FREQ = 10;
-    private static final int BIGRAM_FREQ = 50;
-    private static final int TOLERANCE_OF_BIGRAM_FREQ = 5;
-
-    private static final ArrayList<String> sWords = new ArrayList<>();
-    private static final ArrayList<String> sWordsWithVariousCodePoints = new ArrayList<>();
-    private static final SparseArray<List<Integer>> sEmptyBigrams = new SparseArray<>();
-    private static final SparseArray<List<Integer>> sStarBigrams = new SparseArray<>();
-    private static final SparseArray<List<Integer>> sChainBigrams = new SparseArray<>();
-
-    final Random mRandom;
-
-    public BinaryDictDecoderEncoderTests() {
-        this(System.currentTimeMillis(), DEFAULT_MAX_UNIGRAMS);
-    }
-
-    public BinaryDictDecoderEncoderTests(final long seed, final int maxUnigrams) {
-        super();
-        BinaryDictionaryUtils.setCurrentTimeForTest(0);
-        Log.e(TAG, "Testing dictionary: seed is " + seed);
-        mRandom = new Random(seed);
-        sWords.clear();
-        sWordsWithVariousCodePoints.clear();
-        generateWords(maxUnigrams, mRandom);
-
-        for (int i = 0; i < sWords.size(); ++i) {
-            sChainBigrams.put(i, new ArrayList<Integer>());
-            if (i > 0) {
-                sChainBigrams.get(i - 1).add(i);
-            }
-        }
-
-        sStarBigrams.put(0, new ArrayList<Integer>());
-        // MAX - 1 because we added one above already
-        final int maxBigrams = Math.min(sWords.size(), FormatSpec.MAX_BIGRAMS_IN_A_PTNODE - 1);
-        for (int i = 1; i < maxBigrams; ++i) {
-            sStarBigrams.get(0).add(i);
-        }
-    }
-
-    @Override
-    protected void setUp() throws Exception {
-        super.setUp();
-        BinaryDictionaryUtils.setCurrentTimeForTest(0);
-    }
-
-    @Override
-    protected void tearDown() throws Exception {
-        // Quit test mode.
-        BinaryDictionaryUtils.setCurrentTimeForTest(-1);
-        super.tearDown();
-    }
-
-    private static void generateWords(final int number, final Random random) {
-        final int[] codePointSet = CodePointUtils.generateCodePointSet(DEFAULT_CODE_POINT_SET_SIZE,
-                random);
-        final Set<String> wordSet = new HashSet<>();
-        while (wordSet.size() < number) {
-            wordSet.add(CodePointUtils.generateWord(random, codePointSet));
-        }
-        sWords.addAll(wordSet);
-
-        final int[] largeCodePointSet = CodePointUtils.generateCodePointSet(
-                LARGE_CODE_POINT_SET_SIZE, random);
-        wordSet.clear();
-        while (wordSet.size() < number) {
-            wordSet.add(CodePointUtils.generateWord(random, largeCodePointSet));
-        }
-        sWordsWithVariousCodePoints.addAll(wordSet);
-    }
-
-    /**
-     * Adds unigrams to the dictionary.
-     */
-    private static void addUnigrams(final int number, final FusionDictionary dict,
-            final List<String> words) {
-        for (int i = 0; i < number; ++i) {
-            final String word = words.get(i);
-            final ArrayList<WeightedString> shortcuts = new ArrayList<>();
-            dict.add(word, new ProbabilityInfo(UNIGRAM_FREQ), false /* isNotAWord */,
-                    false /* isPossiblyOffensive */);
-        }
-    }
-
-    private static void addBigrams(final FusionDictionary dict,
-            final List<String> words,
-            final SparseArray<List<Integer>> bigrams) {
-        for (int i = 0; i < bigrams.size(); ++i) {
-            final int w1 = bigrams.keyAt(i);
-            for (int w2 : bigrams.valueAt(i)) {
-                dict.setBigram(words.get(w1), words.get(w2), new ProbabilityInfo(BIGRAM_FREQ));
-            }
-        }
-    }
-
-//    The following is useful to dump the dictionary into a textual file, but it can't compile
-//    on-device, so it's commented out.
-//    private void dumpToCombinedFileForDebug(final FusionDictionary dict, final String filename)
-//            throws IOException {
-//        com.android.inputmethod.latin.dicttool.CombinedInputOutput.writeDictionaryCombined(
-//                new java.io.FileWriter(new File(filename)), dict);
-//    }
-
-    private static long timeWritingDictToFile(final File file, final FusionDictionary dict,
-            final FormatSpec.FormatOptions formatOptions) {
-
-        long now = -1, diff = -1;
-
-        try {
-            final DictEncoder dictEncoder = BinaryDictUtils.getDictEncoder(file, formatOptions);
-
-            now = System.currentTimeMillis();
-            // If you need to dump the dict to a textual file, uncomment the line below and the
-            // function above
-            // dumpToCombinedFileForDebug(file, "/tmp/foo");
-            dictEncoder.writeDictionary(dict, formatOptions);
-            diff = System.currentTimeMillis() - now;
-        } catch (IOException e) {
-            Log.e(TAG, "IO exception while writing file", e);
-        } catch (UnsupportedFormatException e) {
-            Log.e(TAG, "UnsupportedFormatException", e);
-        }
-
-        return diff;
-    }
-
-    private static void checkDictionary(final FusionDictionary dict, final List<String> words,
-            final SparseArray<List<Integer>> bigrams) {
-        assertNotNull(dict);
-
-        // check unigram
-        for (final String word : words) {
-            final PtNode ptNode = FusionDictionary.findWordInTree(dict.mRootNodeArray, word);
-            assertNotNull(ptNode);
-        }
-
-        // check bigram
-        for (int i = 0; i < bigrams.size(); ++i) {
-            final int w1 = bigrams.keyAt(i);
-            for (final int w2 : bigrams.valueAt(i)) {
-                final PtNode ptNode = FusionDictionary.findWordInTree(dict.mRootNodeArray,
-                        words.get(w1));
-                assertNotNull(words.get(w1) + "," + words.get(w2), ptNode.getBigram(words.get(w2)));
-            }
-        }
-    }
-
-    private static String outputOptions(final int bufferType,
-            final FormatSpec.FormatOptions formatOptions) {
-        final String result = " : buffer type = "
-                + ((bufferType == BinaryDictUtils.USE_BYTE_BUFFER) ? "byte buffer" : "byte array");
-        return result + " : version = " + formatOptions.mVersion;
-    }
-
-    // Tests for readDictionaryBinary and writeDictionaryBinary
-
-    private static long timeReadingAndCheckDict(final File file, final List<String> words,
-            final SparseArray<List<Integer>> bigrams, final int bufferType) {
-        long now, diff = -1;
-
-        FusionDictionary dict = null;
-        try {
-            final DictDecoder dictDecoder = BinaryDictIOUtils.getDictDecoder(file, 0, file.length(),
-                    bufferType);
-            now = System.currentTimeMillis();
-            dict = dictDecoder.readDictionaryBinary(false /* deleteDictIfBroken */);
-            diff  = System.currentTimeMillis() - now;
-        } catch (IOException e) {
-            Log.e(TAG, "IOException while reading dictionary", e);
-        } catch (UnsupportedFormatException e) {
-            Log.e(TAG, "Unsupported format", e);
-        }
-
-        checkDictionary(dict, words, bigrams);
-        return diff;
-    }
-
-    // Tests for readDictionaryBinary and writeDictionaryBinary
-    private String runReadAndWrite(final List<String> words,
-            final SparseArray<List<Integer>> bigrams,
-            final int bufferType, final FormatSpec.FormatOptions formatOptions,
-            final String message) {
-
-        final String dictName = "runReadAndWrite";
-        final String dictVersion = Long.toString(System.currentTimeMillis());
-        final File file = BinaryDictUtils.getDictFile(dictName, dictVersion, formatOptions,
-                getContext().getCacheDir());
-
-        final FusionDictionary dict = new FusionDictionary(new PtNodeArray(),
-                BinaryDictUtils.makeDictionaryOptions(dictName, dictVersion, formatOptions));
-        addUnigrams(words.size(), dict, words);
-        addBigrams(dict, words, bigrams);
-        checkDictionary(dict, words, bigrams);
-
-        final long write = timeWritingDictToFile(file, dict, formatOptions);
-        final long read = timeReadingAndCheckDict(file, words, bigrams, bufferType);
-
-        return "PROF: read=" + read + "ms, write=" + write + "ms :" + message
-                + " : " + outputOptions(bufferType, formatOptions);
-    }
-
-    private void runReadAndWriteTests(final List<String> results, final int bufferType,
-            final FormatSpec.FormatOptions formatOptions) {
-        results.add(runReadAndWrite(sWords, sEmptyBigrams, bufferType,
-                formatOptions, "unigram"));
-        results.add(runReadAndWrite(sWords, sChainBigrams, bufferType,
-                formatOptions, "chain"));
-        results.add(runReadAndWrite(sWords, sStarBigrams, bufferType,
-                formatOptions, "star"));
-        results.add(runReadAndWrite(sWords, sEmptyBigrams, bufferType, formatOptions,
-                "unigram with shortcuts"));
-        results.add(runReadAndWrite(sWords, sChainBigrams, bufferType, formatOptions,
-                "chain with shortcuts"));
-        results.add(runReadAndWrite(sWords, sStarBigrams, bufferType, formatOptions,
-                "star with shortcuts"));
-        results.add(runReadAndWrite(sWordsWithVariousCodePoints, sEmptyBigrams,
-                bufferType, formatOptions,
-                "unigram with various code points"));
-    }
-
-    public void testCharacterTableIsPresent() throws IOException, UnsupportedFormatException {
-        final String[] wordSource = {"words", "used", "for", "testing", "a", "code point", "table"};
-        final List<String> words = Arrays.asList(wordSource);
-        final String correctCodePointTable = "toesdrniawuplgfcb ";
-        final String dictName = "codePointTableTest";
-        final String dictVersion = Long.toString(System.currentTimeMillis());
-        final String codePointTableAttribute = DictionaryHeader.CODE_POINT_TABLE_KEY;
-        final File file = BinaryDictUtils.getDictFile(dictName, dictVersion,
-                BinaryDictUtils.STATIC_OPTIONS, getContext().getCacheDir());
-
-        // Write a test dictionary
-        final DictEncoder dictEncoder = new Ver2DictEncoder(file,
-                Ver2DictEncoder.CODE_POINT_TABLE_ON);
-        final FormatSpec.FormatOptions formatOptions =
-                new FormatSpec.FormatOptions(
-                        FormatSpec.MINIMUM_SUPPORTED_STATIC_VERSION);
-        final FusionDictionary sourcedict = new FusionDictionary(new PtNodeArray(),
-                BinaryDictUtils.makeDictionaryOptions(dictName, dictVersion, formatOptions));
-        addUnigrams(words.size(), sourcedict, words);
-        dictEncoder.writeDictionary(sourcedict, formatOptions);
-
-        // Read the dictionary
-        final DictDecoder dictDecoder = BinaryDictIOUtils.getDictDecoder(file, 0, file.length(),
-                DictDecoder.USE_BYTEARRAY);
-        final DictionaryHeader fileHeader = dictDecoder.readHeader();
-        // Check if codePointTable is present
-        assertTrue("codePointTable is not present",
-                fileHeader.mDictionaryOptions.mAttributes.containsKey(codePointTableAttribute));
-        final String codePointTable =
-                fileHeader.mDictionaryOptions.mAttributes.get(codePointTableAttribute);
-        // Check if codePointTable is correct
-        assertEquals("codePointTable is incorrect", codePointTable, correctCodePointTable);
-    }
-
-    // Unit test for CharEncoding.readString and CharEncoding.writeString.
-    public void testCharEncoding() {
-        // the max length of a word in sWords is less than 50.
-        // See generateWords.
-        final byte[] buffer = new byte[50 * 3];
-        final DictBuffer dictBuffer = new ByteArrayDictBuffer(buffer);
-        for (final String word : sWords) {
-            Arrays.fill(buffer, (byte) 0);
-            CharEncoding.writeString(buffer, 0, word, null);
-            dictBuffer.position(0);
-            final String str = CharEncoding.readString(dictBuffer);
-            assertEquals(word, str);
-        }
-    }
-
-    public void testReadAndWriteWithByteBuffer() {
-        final List<String> results = new ArrayList<>();
-
-        runReadAndWriteTests(results, BinaryDictUtils.USE_BYTE_BUFFER,
-                BinaryDictUtils.STATIC_OPTIONS);
-        runReadAndWriteTests(results, BinaryDictUtils.USE_BYTE_BUFFER,
-                BinaryDictUtils.DYNAMIC_OPTIONS_WITHOUT_TIMESTAMP);
-        runReadAndWriteTests(results, BinaryDictUtils.USE_BYTE_BUFFER,
-                BinaryDictUtils.DYNAMIC_OPTIONS_WITH_TIMESTAMP);
-        for (final String result : results) {
-            Log.d(TAG, result);
-        }
-    }
-
-    public void testReadAndWriteWithByteArray() {
-        final List<String> results = new ArrayList<>();
-
-        runReadAndWriteTests(results, BinaryDictUtils.USE_BYTE_ARRAY,
-                BinaryDictUtils.STATIC_OPTIONS);
-        runReadAndWriteTests(results, BinaryDictUtils.USE_BYTE_ARRAY,
-                BinaryDictUtils.DYNAMIC_OPTIONS_WITHOUT_TIMESTAMP);
-        runReadAndWriteTests(results, BinaryDictUtils.USE_BYTE_ARRAY,
-                BinaryDictUtils.DYNAMIC_OPTIONS_WITH_TIMESTAMP);
-
-        for (final String result : results) {
-            Log.d(TAG, result);
-        }
-    }
-
-    // Tests for readUnigramsAndBigramsBinary
-
-    private static void checkWordMap(final List<String> expectedWords,
-            final SparseArray<List<Integer>> expectedBigrams,
-            final TreeMap<Integer, String> resultWords,
-            final TreeMap<Integer, Integer> resultFrequencies,
-            final TreeMap<Integer, ArrayList<PendingAttribute>> resultBigrams,
-            final boolean checkProbability) {
-        // check unigrams
-        final Set<String> actualWordsSet = new HashSet<>(resultWords.values());
-        final Set<String> expectedWordsSet = new HashSet<>(expectedWords);
-        assertEquals(actualWordsSet, expectedWordsSet);
-        if (checkProbability) {
-            for (int freq : resultFrequencies.values()) {
-                assertEquals(freq, UNIGRAM_FREQ);
-            }
-        }
-
-        // check bigrams
-        final HashMap<String, Set<String>> expBigrams = new HashMap<>();
-        for (int i = 0; i < expectedBigrams.size(); ++i) {
-            final String word1 = expectedWords.get(expectedBigrams.keyAt(i));
-            for (int w2 : expectedBigrams.valueAt(i)) {
-                if (expBigrams.get(word1) == null) {
-                    expBigrams.put(word1, new HashSet<String>());
-                }
-                expBigrams.get(word1).add(expectedWords.get(w2));
-            }
-        }
-
-        final HashMap<String, Set<String>> actBigrams = new HashMap<>();
-        for (Entry<Integer, ArrayList<PendingAttribute>> entry : resultBigrams.entrySet()) {
-            final String word1 = resultWords.get(entry.getKey());
-            final int unigramFreq = resultFrequencies.get(entry.getKey());
-            for (PendingAttribute attr : entry.getValue()) {
-                final String word2 = resultWords.get(attr.mAddress);
-                if (actBigrams.get(word1) == null) {
-                    actBigrams.put(word1, new HashSet<String>());
-                }
-                actBigrams.get(word1).add(word2);
-
-                if (checkProbability) {
-                    final int bigramFreq = BinaryDictIOUtils.reconstructBigramFrequency(
-                            unigramFreq, attr.mFrequency);
-                    assertTrue(Math.abs(bigramFreq - BIGRAM_FREQ) < TOLERANCE_OF_BIGRAM_FREQ);
-                }
-            }
-        }
-        assertEquals(actBigrams, expBigrams);
-    }
-
-    private static long timeAndCheckReadUnigramsAndBigramsBinary(final File file,
-            final List<String> words, final SparseArray<List<Integer>> bigrams,
-            final int bufferType, final boolean checkProbability) {
-        final TreeMap<Integer, String> resultWords = new TreeMap<>();
-        final TreeMap<Integer, ArrayList<PendingAttribute>> resultBigrams = new TreeMap<>();
-        final TreeMap<Integer, Integer> resultFreqs = new TreeMap<>();
-
-        long now = -1, diff = -1;
-        try {
-            final DictDecoder dictDecoder = BinaryDictIOUtils.getDictDecoder(file, 0, file.length(),
-                    bufferType);
-            now = System.currentTimeMillis();
-            dictDecoder.readUnigramsAndBigramsBinary(resultWords, resultFreqs, resultBigrams);
-            diff = System.currentTimeMillis() - now;
-        } catch (IOException e) {
-            Log.e(TAG, "IOException", e);
-        } catch (UnsupportedFormatException e) {
-            Log.e(TAG, "UnsupportedFormatException", e);
-        }
-
-        checkWordMap(words, bigrams, resultWords, resultFreqs, resultBigrams, checkProbability);
-        return diff;
-    }
-
-    private String runReadUnigramsAndBigramsBinary(final ArrayList<String> words,
-            final SparseArray<List<Integer>> bigrams, final int bufferType,
-            final FormatSpec.FormatOptions formatOptions, final String message) {
-        final String dictName = "runReadUnigrams";
-        final String dictVersion = Long.toString(System.currentTimeMillis());
-        final File file = BinaryDictUtils.getDictFile(dictName, dictVersion, formatOptions,
-                getContext().getCacheDir());
-
-        // making the dictionary from lists of words.
-        final FusionDictionary dict = new FusionDictionary(new PtNodeArray(),
-                BinaryDictUtils.makeDictionaryOptions(dictName, dictVersion, formatOptions));
-        addUnigrams(words.size(), dict, words);
-        addBigrams(dict, words, bigrams);
-
-        timeWritingDictToFile(file, dict, formatOptions);
-
-        // Caveat: Currently, the Java code to read a v4 dictionary doesn't calculate the
-        // probability when there's a timestamp for the entry.
-        // TODO: Abandon the Java code, and implement the v4 dictionary reading code in native.
-        long wordMap = timeAndCheckReadUnigramsAndBigramsBinary(file, words, bigrams, bufferType,
-                !formatOptions.mHasTimestamp /* checkProbability */);
-        long fullReading = timeReadingAndCheckDict(file, words, bigrams,
-                bufferType);
-
-        return "readDictionaryBinary=" + fullReading + ", readUnigramsAndBigramsBinary=" + wordMap
-                + " : " + message + " : " + outputOptions(bufferType, formatOptions);
-    }
-
-    private void runReadUnigramsAndBigramsTests(final ArrayList<String> results,
-            final int bufferType, final FormatSpec.FormatOptions formatOptions) {
-        results.add(runReadUnigramsAndBigramsBinary(sWords, sEmptyBigrams, bufferType,
-                formatOptions, "unigram"));
-        results.add(runReadUnigramsAndBigramsBinary(sWords, sChainBigrams, bufferType,
-                formatOptions, "chain"));
-        results.add(runReadUnigramsAndBigramsBinary(sWords, sStarBigrams, bufferType,
-                formatOptions, "star"));
-    }
-
-    public void testReadUnigramsAndBigramsBinaryWithByteBuffer() {
-        final ArrayList<String> results = new ArrayList<>();
-
-        runReadUnigramsAndBigramsTests(results, BinaryDictUtils.USE_BYTE_BUFFER,
-                BinaryDictUtils.STATIC_OPTIONS);
-
-        for (final String result : results) {
-            Log.d(TAG, result);
-        }
-    }
-
-    public void testReadUnigramsAndBigramsBinaryWithByteArray() {
-        final ArrayList<String> results = new ArrayList<>();
-
-        runReadUnigramsAndBigramsTests(results, BinaryDictUtils.USE_BYTE_ARRAY,
-                BinaryDictUtils.STATIC_OPTIONS);
-
-        for (final String result : results) {
-            Log.d(TAG, result);
-        }
-    }
-
-    // Tests for getTerminalPosition
-    private static String getWordFromBinary(final DictDecoder dictDecoder, final int address) {
-        if (dictDecoder.getPosition() != 0) dictDecoder.setPosition(0);
-
-        DictionaryHeader fileHeader = null;
-        try {
-            fileHeader = dictDecoder.readHeader();
-        } catch (IOException e) {
-            return null;
-        } catch (UnsupportedFormatException e) {
-            return null;
-        }
-        if (fileHeader == null) return null;
-        return BinaryDictDecoderUtils.getWordAtPosition(dictDecoder, fileHeader.mBodyOffset,
-                address).mWord;
-    }
-
-    private static long checkGetTerminalPosition(final DictDecoder dictDecoder, final String word,
-            final boolean contained) {
-        long diff = -1;
-        int position = -1;
-        try {
-            final long now = System.nanoTime();
-            position = dictDecoder.getTerminalPosition(word);
-            diff = System.nanoTime() - now;
-        } catch (IOException e) {
-            Log.e(TAG, "IOException while getTerminalPosition", e);
-        } catch (UnsupportedFormatException e) {
-            Log.e(TAG, "UnsupportedFormatException while getTerminalPosition", e);
-        }
-
-        assertEquals(FormatSpec.NOT_VALID_WORD != position, contained);
-        if (contained) assertEquals(getWordFromBinary(dictDecoder, position), word);
-        return diff;
-    }
-
-    private void runGetTerminalPosition(final ArrayList<String> words,
-            final SparseArray<List<Integer>> bigrams, final int bufferType,
-            final FormatOptions formatOptions, final String message) {
-        final String dictName = "testGetTerminalPosition";
-        final String dictVersion = Long.toString(System.currentTimeMillis());
-        final File file = BinaryDictUtils.getDictFile(dictName, dictVersion, formatOptions,
-                getContext().getCacheDir());
-
-        final FusionDictionary dict = new FusionDictionary(new PtNodeArray(),
-                BinaryDictUtils.makeDictionaryOptions(dictName, dictVersion, formatOptions));
-        addUnigrams(sWords.size(), dict, sWords);
-        addBigrams(dict, words, bigrams);
-        timeWritingDictToFile(file, dict, formatOptions);
-
-        final DictDecoder dictDecoder = BinaryDictIOUtils.getDictDecoder(file, 0, file.length(),
-                DictDecoder.USE_BYTEARRAY);
-        try {
-            dictDecoder.openDictBuffer();
-        } catch (IOException e) {
-            Log.e(TAG, "IOException while opening the buffer", e);
-        } catch (UnsupportedFormatException e) {
-            Log.e(TAG, "IOException while opening the buffer", e);
-        }
-        assertTrue("Can't get the buffer", dictDecoder.isDictBufferOpen());
-
-        try {
-            // too long word
-            final String longWord = "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz";
-            assertEquals(FormatSpec.NOT_VALID_WORD, dictDecoder.getTerminalPosition(longWord));
-
-            // null
-            assertEquals(FormatSpec.NOT_VALID_WORD, dictDecoder.getTerminalPosition(null));
-
-            // empty string
-            assertEquals(FormatSpec.NOT_VALID_WORD, dictDecoder.getTerminalPosition(""));
-        } catch (IOException e) {
-        } catch (UnsupportedFormatException e) {
-        }
-
-        // Test a word that is contained within the dictionary.
-        long sum = 0;
-        for (int i = 0; i < sWords.size(); ++i) {
-            final long time = checkGetTerminalPosition(dictDecoder, sWords.get(i), true);
-            sum += time == -1 ? 0 : time;
-        }
-        Log.d(TAG, "per search : " + (((double)sum) / sWords.size() / 1000000) + " : " + message
-                + " : " + outputOptions(bufferType, formatOptions));
-
-        // Test a word that isn't contained within the dictionary.
-        final int[] codePointSet = CodePointUtils.generateCodePointSet(DEFAULT_CODE_POINT_SET_SIZE,
-                mRandom);
-        for (int i = 0; i < 1000; ++i) {
-            final String word = CodePointUtils.generateWord(mRandom, codePointSet);
-            if (sWords.indexOf(word) != -1) continue;
-            checkGetTerminalPosition(dictDecoder, word, false);
-        }
-    }
-
-    private void runGetTerminalPositionTests(final int bufferType,
-            final FormatOptions formatOptions) {
-        runGetTerminalPosition(sWords, sEmptyBigrams, bufferType, formatOptions, "unigram");
-    }
-
-    public void testGetTerminalPosition() {
-        final ArrayList<String> results = new ArrayList<>();
-
-        runGetTerminalPositionTests(BinaryDictUtils.USE_BYTE_ARRAY,
-                BinaryDictUtils.STATIC_OPTIONS);
-        runGetTerminalPositionTests(BinaryDictUtils.USE_BYTE_BUFFER,
-                BinaryDictUtils.STATIC_OPTIONS);
-
-        for (final String result : results) {
-            Log.d(TAG, result);
-        }
-    }
-
-    public void testVer2DictGetWordProperty() {
-        final FormatOptions formatOptions = BinaryDictUtils.STATIC_OPTIONS;
-        final ArrayList<String> words = sWords;
-        final String dictName = "testGetWordProperty";
-        final String dictVersion = Long.toString(System.currentTimeMillis());
-        final FusionDictionary dict = new FusionDictionary(new PtNodeArray(),
-                BinaryDictUtils.makeDictionaryOptions(dictName, dictVersion, formatOptions));
-        addUnigrams(words.size(), dict, words);
-        addBigrams(dict, words, sEmptyBigrams);
-        final File file = BinaryDictUtils.getDictFile(dictName, dictVersion, formatOptions,
-                getContext().getCacheDir());
-        file.delete();
-        timeWritingDictToFile(file, dict, formatOptions);
-        final BinaryDictionary binaryDictionary = new BinaryDictionary(file.getAbsolutePath(),
-                0 /* offset */, file.length(), true /* useFullEditDistance */,
-                Locale.ENGLISH, dictName, false /* isUpdatable */);
-        for (final String word : words) {
-            final WordProperty wordProperty = binaryDictionary.getWordProperty(word,
-                    false /* isBeginningOfSentence */);
-            assertEquals(word, wordProperty.mWord);
-            assertEquals(UNIGRAM_FREQ, wordProperty.getProbability());
-        }
-    }
-
-    public void testVer2DictIteration() {
-        final FormatOptions formatOptions = BinaryDictUtils.STATIC_OPTIONS;
-        final ArrayList<String> words = sWords;
-        final SparseArray<List<Integer>> bigrams = sEmptyBigrams;
-        final String dictName = "testGetWordProperty";
-        final String dictVersion = Long.toString(System.currentTimeMillis());
-        final FusionDictionary dict = new FusionDictionary(new PtNodeArray(),
-                BinaryDictUtils.makeDictionaryOptions(dictName, dictVersion, formatOptions));
-        addUnigrams(words.size(), dict, words);
-        addBigrams(dict, words, bigrams);
-        final File file = BinaryDictUtils.getDictFile(dictName, dictVersion, formatOptions,
-                getContext().getCacheDir());
-        timeWritingDictToFile(file, dict, formatOptions);
-        Log.d(TAG, file.getAbsolutePath());
-        final BinaryDictionary binaryDictionary = new BinaryDictionary(file.getAbsolutePath(),
-                0 /* offset */, file.length(), true /* useFullEditDistance */,
-                Locale.ENGLISH, dictName, false /* isUpdatable */);
-
-        final HashSet<String> wordSet = new HashSet<>(words);
-        final HashSet<Pair<String, String>> bigramSet = new HashSet<>();
-
-        for (int i = 0; i < words.size(); i++) {
-            final List<Integer> bigramList = bigrams.get(i);
-            if (bigramList != null) {
-                for (final Integer word1Index : bigramList) {
-                    final String word1 = words.get(word1Index);
-                    bigramSet.add(new Pair<>(words.get(i), word1));
-                }
-            }
-        }
-        int token = 0;
-        do {
-            final BinaryDictionary.GetNextWordPropertyResult result =
-                    binaryDictionary.getNextWordProperty(token);
-            final WordProperty wordProperty = result.mWordProperty;
-            final String word0 = wordProperty.mWord;
-            assertEquals(UNIGRAM_FREQ, wordProperty.mProbabilityInfo.mProbability);
-            wordSet.remove(word0);
-            if (wordProperty.mHasNgrams) {
-                for (final WeightedString bigramTarget : wordProperty.getBigrams()) {
-                    final String word1 = bigramTarget.mWord;
-                    final Pair<String, String> bigram = new Pair<>(word0, word1);
-                    assertTrue(bigramSet.contains(bigram));
-                    bigramSet.remove(bigram);
-                }
-            }
-            token = result.mNextToken;
-        } while (token != 0);
-        assertTrue(wordSet.isEmpty());
-        assertTrue(bigramSet.isEmpty());
-    }
-}
diff --git a/tests/src/com/android/inputmethod/latin/makedict/BinaryDictUtils.java b/tests/src/com/android/inputmethod/latin/makedict/BinaryDictUtils.java
deleted file mode 100644
index 9c1e4cf..0000000
--- a/tests/src/com/android/inputmethod/latin/makedict/BinaryDictUtils.java
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * 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.
- */
-
-package com.android.inputmethod.latin.makedict;
-
-import com.android.inputmethod.latin.makedict.FormatSpec.DictionaryOptions;
-import com.android.inputmethod.latin.makedict.FormatSpec.FormatOptions;
-
-import java.io.File;
-import java.util.HashMap;
-
-public class BinaryDictUtils {
-    public static final int USE_BYTE_ARRAY = 1;
-    public static final int USE_BYTE_BUFFER = 2;
-
-    public static final String TEST_DICT_FILE_EXTENSION = ".testDict";
-
-    public static final FormatSpec.FormatOptions STATIC_OPTIONS =
-            new FormatSpec.FormatOptions(FormatSpec.VERSION202);
-    public static final FormatSpec.FormatOptions DYNAMIC_OPTIONS_WITHOUT_TIMESTAMP =
-            new FormatSpec.FormatOptions(FormatSpec.VERSION4, false /* hasTimestamp */);
-    public static final FormatSpec.FormatOptions DYNAMIC_OPTIONS_WITH_TIMESTAMP =
-            new FormatSpec.FormatOptions(FormatSpec.VERSION4, true /* hasTimestamp */);
-
-    public static DictionaryOptions makeDictionaryOptions(final String id, final String version,
-            final FormatSpec.FormatOptions formatOptions) {
-        final DictionaryOptions options = new DictionaryOptions(new HashMap<String, String>());
-        options.mAttributes.put(DictionaryHeader.DICTIONARY_LOCALE_KEY, "en_US");
-        options.mAttributes.put(DictionaryHeader.DICTIONARY_ID_KEY, id);
-        options.mAttributes.put(DictionaryHeader.DICTIONARY_VERSION_KEY, version);
-        if (formatOptions.mHasTimestamp) {
-            options.mAttributes.put(DictionaryHeader.HAS_HISTORICAL_INFO_KEY,
-                    DictionaryHeader.ATTRIBUTE_VALUE_TRUE);
-            options.mAttributes.put(DictionaryHeader.USES_FORGETTING_CURVE_KEY,
-                    DictionaryHeader.ATTRIBUTE_VALUE_TRUE);
-        }
-        return options;
-    }
-
-    public static File getDictFile(final String name, final String version,
-            final FormatOptions formatOptions, final File directory) {
-        if (formatOptions.mVersion == FormatSpec.VERSION2
-                || formatOptions.mVersion == FormatSpec.VERSION201
-                || formatOptions.mVersion == FormatSpec.VERSION202) {
-            return new File(directory, name + "." + version + TEST_DICT_FILE_EXTENSION);
-        } else if (formatOptions.mVersion == FormatSpec.VERSION4) {
-            return new File(directory, name + "." + version);
-        } else {
-            throw new RuntimeException("the format option has a wrong version : "
-                    + formatOptions.mVersion);
-        }
-    }
-
-    public static DictEncoder getDictEncoder(final File file, final FormatOptions formatOptions) {
-        if (formatOptions.mVersion == FormatSpec.VERSION4) {
-            if (!file.isDirectory()) {
-                file.mkdir();
-            }
-            return new Ver4DictEncoder(file);
-        } else if (formatOptions.mVersion == FormatSpec.VERSION202) {
-            return new Ver2DictEncoder(file, Ver2DictEncoder.CODE_POINT_TABLE_OFF);
-        } else {
-            throw new RuntimeException("The format option has a wrong version : "
-                    + formatOptions.mVersion);
-        }
-    }
-}
diff --git a/tests/src/com/android/inputmethod/latin/makedict/Ver2DictEncoderTests.java b/tests/src/com/android/inputmethod/latin/makedict/Ver2DictEncoderTests.java
deleted file mode 100644
index dbf9b7a..0000000
--- a/tests/src/com/android/inputmethod/latin/makedict/Ver2DictEncoderTests.java
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * 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.
- */
-
-package com.android.inputmethod.latin.makedict;
-
-import java.util.Arrays;
-import java.util.List;
-import java.util.Map.Entry;
-
-import com.android.inputmethod.latin.makedict.BinaryDictEncoderUtils.CodePointTable;
-import com.android.inputmethod.latin.makedict.FusionDictionary.PtNodeArray;
-
-import android.test.AndroidTestCase;
-import android.test.suitebuilder.annotation.LargeTest;
-
-/**
- * Unit tests for Ver2DictEncoder
- */
-@LargeTest
-public class Ver2DictEncoderTests extends AndroidTestCase {
-    private static final int UNIGRAM_FREQ = 10;
-
-    public void testCodePointTable() {
-        final String[] wordSource = {"words", "used", "for", "testing", "a", "code point", "table"};
-        final List<String> words = Arrays.asList(wordSource);
-        final String correctCodePointTable = "eotdsanirfg bclwup";
-        final String correctCodePointOccurrenceArrayString =
-                "11641114101411531003114211021052972119111711121108110311021991981321";
-        final String correctCodePointExpectedMapString = "343332363540383937464549484744414243";
-        final String dictName = "codePointTableTest";
-        final String dictVersion = Long.toString(System.currentTimeMillis());
-
-        final FormatSpec.FormatOptions formatOptions =
-                new FormatSpec.FormatOptions(FormatSpec.VERSION2);
-        final FusionDictionary sourcedict = new FusionDictionary(new PtNodeArray(),
-                BinaryDictUtils.makeDictionaryOptions(dictName, dictVersion, formatOptions));
-        addUnigrams(sourcedict, words);
-        final CodePointTable codePointTable = Ver2DictEncoder.makeCodePointTable(sourcedict);
-
-        // Check if mCodePointOccurrenceArray is correct
-        final StringBuilder codePointOccurrenceArrayString = new StringBuilder();
-        for (Entry<Integer, Integer> entry : codePointTable.mCodePointOccurrenceArray) {
-            codePointOccurrenceArrayString.append(entry.getKey());
-            codePointOccurrenceArrayString.append(entry.getValue());
-        }
-        assertEquals(correctCodePointOccurrenceArrayString,
-                codePointOccurrenceArrayString.toString());
-
-        // Check if mCodePointToOneByteCodeMap is correct
-        final StringBuilder codePointExpectedMapString = new StringBuilder();
-        for (int i = 0; i < correctCodePointTable.length(); ++i) {
-            codePointExpectedMapString.append(codePointTable.mCodePointToOneByteCodeMap.get(
-                    correctCodePointTable.codePointAt(i)));
-        }
-        assertEquals(correctCodePointExpectedMapString, codePointExpectedMapString.toString());
-    }
-
-    /**
-     * Adds unigrams to the dictionary.
-     */
-    private static void addUnigrams(final FusionDictionary dict, final List<String> words) {
-        for (final String word : words) {
-            dict.add(word, new ProbabilityInfo(UNIGRAM_FREQ),
-                    false /* isNotAWord */,
-                    false /* isPossiblyOffensive */);
-        }
-    }
-}
diff --git a/tests/src/com/android/inputmethod/latin/makedict/Ver4DictEncoder.java b/tests/src/com/android/inputmethod/latin/makedict/Ver4DictEncoder.java
deleted file mode 100644
index 6e7b37d..0000000
--- a/tests/src/com/android/inputmethod/latin/makedict/Ver4DictEncoder.java
+++ /dev/null
@@ -1,133 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * 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.
- */
-
-package com.android.inputmethod.latin.makedict;
-
-import com.android.inputmethod.annotations.UsedForTesting;
-import com.android.inputmethod.latin.BinaryDictionary;
-import com.android.inputmethod.latin.Dictionary;
-import com.android.inputmethod.latin.NgramContext;
-import com.android.inputmethod.latin.common.LocaleUtils;
-import com.android.inputmethod.latin.makedict.FormatSpec.FormatOptions;
-import com.android.inputmethod.latin.makedict.FusionDictionary.PtNode;
-import com.android.inputmethod.latin.utils.BinaryDictionaryUtils;
-
-import java.io.File;
-import java.io.IOException;
-import java.util.HashMap;
-
-/**
- * An implementation of DictEncoder for version 4 binary dictionary.
- */
-@UsedForTesting
-public class Ver4DictEncoder implements DictEncoder {
-    private final File mDictPlacedDir;
-
-    @UsedForTesting
-    public Ver4DictEncoder(final File dictPlacedDir) {
-        mDictPlacedDir = dictPlacedDir;
-    }
-
-    // TODO: This builds a FusionDictionary first and iterates it to add words to the binary
-    // dictionary. However, it is possible to just add words directly to the binary dictionary
-    // instead.
-    // In the long run, when we stop supporting version 2, FusionDictionary will become deprecated
-    // and we can remove it. Then we'll be able to just call BinaryDictionary directly.
-    @Override
-    public void writeDictionary(FusionDictionary dict, FormatOptions formatOptions)
-            throws IOException, UnsupportedFormatException {
-        if (formatOptions.mVersion != FormatSpec.VERSION4) {
-            throw new UnsupportedFormatException("File header has a wrong version number : "
-                    + formatOptions.mVersion);
-        }
-        if (!mDictPlacedDir.isDirectory()) {
-            throw new UnsupportedFormatException("Given path is not a directory.");
-        }
-        if (!BinaryDictionaryUtils.createEmptyDictFile(mDictPlacedDir.getAbsolutePath(),
-                FormatSpec.VERSION4, LocaleUtils.constructLocaleFromString(
-                dict.mOptions.mAttributes.get(DictionaryHeader.DICTIONARY_LOCALE_KEY)),
-                dict.mOptions.mAttributes)) {
-            throw new IOException("Cannot create dictionary file : "
-                + mDictPlacedDir.getAbsolutePath());
-        }
-        final BinaryDictionary binaryDict = new BinaryDictionary(mDictPlacedDir.getAbsolutePath(),
-                0l, mDictPlacedDir.length(), true /* useFullEditDistance */,
-                LocaleUtils.constructLocaleFromString(dict.mOptions.mAttributes.get(
-                        DictionaryHeader.DICTIONARY_LOCALE_KEY)),
-                Dictionary.TYPE_USER /* Dictionary type. Does not matter for us */,
-                true /* isUpdatable */);
-        if (!binaryDict.isValidDictionary()) {
-            // Somehow createEmptyDictFile returned true, but the file was not created correctly
-            throw new IOException("Cannot create dictionary file");
-        }
-        for (final WordProperty wordProperty : dict) {
-            if (!binaryDict.addUnigramEntry(wordProperty.mWord, wordProperty.getProbability(),
-                    wordProperty.mIsBeginningOfSentence, wordProperty.mIsNotAWord,
-                    wordProperty.mIsPossiblyOffensive, 0 /* timestamp */)) {
-                MakedictLog.e("Cannot add unigram entry for " + wordProperty.mWord);
-            }
-            if (binaryDict.needsToRunGC(true /* mindsBlockByGC */)) {
-                if (!binaryDict.flushWithGC()) {
-                    MakedictLog.e("Cannot flush dict with GC.");
-                    return;
-                }
-            }
-        }
-        for (final WordProperty word0Property : dict) {
-            if (!word0Property.mHasNgrams) continue;
-            // TODO: Support ngram.
-            for (final WeightedString word1 : word0Property.getBigrams()) {
-                final NgramContext ngramContext =
-                        new NgramContext(new NgramContext.WordInfo(word0Property.mWord));
-                if (!binaryDict.addNgramEntry(ngramContext, word1.mWord,
-                        word1.getProbability(), 0 /* timestamp */)) {
-                    MakedictLog.e("Cannot add n-gram entry for "
-                            + ngramContext + " -> " + word1.mWord);
-                    return;
-                }
-                if (binaryDict.needsToRunGC(true /* mindsBlockByGC */)) {
-                    if (!binaryDict.flushWithGC()) {
-                        MakedictLog.e("Cannot flush dict with GC.");
-                        return;
-                    }
-                }
-            }
-        }
-        if (!binaryDict.flushWithGC()) {
-            MakedictLog.e("Cannot flush dict with GC.");
-            return;
-        }
-        binaryDict.close();
-    }
-
-    @Override
-    public void setPosition(int position) {
-    }
-
-    @Override
-    public int getPosition() {
-        return 0;
-    }
-
-    @Override
-    public void writePtNodeCount(int ptNodeCount) {
-    }
-
-    @Override
-    public void writePtNode(PtNode ptNode, FusionDictionary dict,
-            HashMap<Integer, Integer> codePointToOneByteCodeMap) {
-    }
-}
diff --git a/tests/src/com/android/inputmethod/latin/utils/BinaryDictionaryUtilsTests.java b/tests/src/com/android/inputmethod/latin/utils/BinaryDictionaryUtilsTests.java
deleted file mode 100644
index f50b8e0..0000000
--- a/tests/src/com/android/inputmethod/latin/utils/BinaryDictionaryUtilsTests.java
+++ /dev/null
@@ -1,90 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * 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.
- */
-
-package com.android.inputmethod.latin.utils;
-
-import android.test.AndroidTestCase;
-import android.test.suitebuilder.annotation.LargeTest;
-
-import com.android.inputmethod.latin.BinaryDictionary;
-import com.android.inputmethod.latin.common.FileUtils;
-import com.android.inputmethod.latin.common.LocaleUtils;
-import com.android.inputmethod.latin.makedict.DictionaryHeader;
-import com.android.inputmethod.latin.makedict.FormatSpec;
-
-import java.io.File;
-import java.io.IOException;
-import java.util.HashMap;
-import java.util.Locale;
-import java.util.Map;
-import java.util.concurrent.TimeUnit;
-
-@LargeTest
-public class BinaryDictionaryUtilsTests extends AndroidTestCase {
-    private static final String TEST_DICT_FILE_EXTENSION = ".testDict";
-    private static final String TEST_LOCALE = "test";
-
-    private File createEmptyDictionaryAndGetFile(final String dictId,
-            final int formatVersion) throws IOException {
-        if (formatVersion == FormatSpec.VERSION4) {
-            return createEmptyVer4DictionaryAndGetFile(dictId);
-        }
-        throw new IOException("Dictionary format version " + formatVersion + " is not supported.");
-    }
-
-    private File createEmptyVer4DictionaryAndGetFile(final String dictId) throws IOException {
-        final File file = getDictFile(dictId);
-        FileUtils.deleteRecursively(file);
-        Map<String, String> attributeMap = new HashMap<>();
-        attributeMap.put(DictionaryHeader.DICTIONARY_ID_KEY, dictId);
-        attributeMap.put(DictionaryHeader.DICTIONARY_VERSION_KEY,
-                String.valueOf(TimeUnit.MILLISECONDS.toSeconds(System.currentTimeMillis())));
-        attributeMap.put(DictionaryHeader.USES_FORGETTING_CURVE_KEY,
-                DictionaryHeader.ATTRIBUTE_VALUE_TRUE);
-        attributeMap.put(DictionaryHeader.HAS_HISTORICAL_INFO_KEY,
-                DictionaryHeader.ATTRIBUTE_VALUE_TRUE);
-        if (BinaryDictionaryUtils.createEmptyDictFile(file.getAbsolutePath(), FormatSpec.VERSION4,
-                LocaleUtils.constructLocaleFromString(TEST_LOCALE), attributeMap)) {
-            return file;
-        }
-        throw new IOException("Empty dictionary " + file.getAbsolutePath() + " cannot be created.");
-    }
-
-    private File getDictFile(final String dictId) {
-        return new File(getContext().getCacheDir(), dictId + TEST_DICT_FILE_EXTENSION);
-    }
-
-    public void testRenameDictionary() {
-        final int formatVersion = FormatSpec.VERSION4;
-        File dictFile0 = null;
-        try {
-            dictFile0 = createEmptyDictionaryAndGetFile("MoveFromDictionary", formatVersion);
-        } catch (IOException e) {
-            fail("IOException while writing an initial dictionary : " + e);
-        }
-        final File dictFile1 = getDictFile("MoveToDictionary");
-        FileUtils.deleteRecursively(dictFile1);
-        assertTrue(BinaryDictionaryUtils.renameDict(dictFile0, dictFile1));
-        assertFalse(dictFile0.exists());
-        assertTrue(dictFile1.exists());
-        BinaryDictionary binaryDictionary = new BinaryDictionary(dictFile1.getAbsolutePath(),
-                0 /* offset */, dictFile1.length(), true /* useFullEditDistance */,
-                Locale.getDefault(), TEST_LOCALE, true /* isUpdatable */);
-        assertTrue(binaryDictionary.isValidDictionary());
-        assertTrue(binaryDictionary.getFormatVersion() == formatVersion);
-        binaryDictionary.close();
-    }
-}