diff --git a/tests/src/com/android/inputmethod/latin/makedict/BinaryDictDecoderEncoderTests.java b/tests/src/com/android/inputmethod/latin/makedict/BinaryDictDecoderEncoderTests.java
index 25eaa64..6c60fdc 100644
--- a/tests/src/com/android/inputmethod/latin/makedict/BinaryDictDecoderEncoderTests.java
+++ b/tests/src/com/android/inputmethod/latin/makedict/BinaryDictDecoderEncoderTests.java
@@ -24,10 +24,6 @@
 
 import com.android.inputmethod.latin.BinaryDictionary;
 import com.android.inputmethod.latin.common.CodePointUtils;
-import com.android.inputmethod.latin.dicttool.BinaryDictOffdeviceUtils;
-import com.android.inputmethod.latin.dicttool.Compress;
-import com.android.inputmethod.latin.dicttool.Crypt;
-import com.android.inputmethod.latin.dicttool.BinaryDictOffdeviceUtils.DecoderChainSpec;
 import com.android.inputmethod.latin.makedict.BinaryDictDecoderUtils.CharEncoding;
 import com.android.inputmethod.latin.makedict.BinaryDictDecoderUtils.DictBuffer;
 import com.android.inputmethod.latin.makedict.FormatSpec.DictionaryOptions;
@@ -737,61 +733,4 @@
         assertTrue(wordSet.isEmpty());
         assertTrue(bigramSet.isEmpty());
     }
-
-    public void runTestHeaderReaderProcessorWithOneSpec(final boolean compress, final boolean crypt)
-                throws IOException {
-        final String dictName = "testHeaderReaderProcessor";
-        final String dictVersion = Long.toString(System.currentTimeMillis());
-        final FormatOptions formatOptions = BinaryDictUtils.STATIC_OPTIONS;
-        final int MAX_NUMBER_OF_OPTIONS_TO_ADD = 5;
-        final HashMap<String, String> options = new HashMap<>();
-        // Required attributes
-        options.put("dictionary", "main:en_US");
-        options.put("locale", "en_US");
-        options.put("version", Integer.toString(mRandom.nextInt()));
-        // Add some random options for test
-        final int numberOfOptionsToAdd = mRandom.nextInt() % (MAX_NUMBER_OF_OPTIONS_TO_ADD + 1);
-        for (int i = 0; i < numberOfOptionsToAdd; ++i) {
-            options.put(sWordsWithVariousCodePoints.get(2 * i),
-                    sWordsWithVariousCodePoints.get(2 * 1 + 1));
-        }
-        final FusionDictionary dict = new FusionDictionary(new PtNodeArray(),
-                new DictionaryOptions(options));
-        addUnigrams(sWords.size(), dict, sWords, null);
-        File file = BinaryDictUtils.getDictFile(dictName, dictVersion, formatOptions,
-                getContext().getCacheDir());
-        timeWritingDictToFile(file, dict, formatOptions);
-
-        if (compress) {
-            final File rawFile = file;
-            file = BinaryDictUtils.getDictFile(dictName + "compress", dictVersion, formatOptions,
-                    getContext().getCacheDir());
-            final Compress.Compressor compressCommand = new Compress.Compressor();
-            compressCommand.setArgs(new String[] { rawFile.getPath(), file.getPath() });
-            compressCommand.run();
-        }
-        if (crypt) {
-            final File rawFile = file;
-            file = BinaryDictUtils.getDictFile(dictName + "crypt", dictVersion, formatOptions,
-                    getContext().getCacheDir());
-            final Crypt.Encrypter cryptCommand = new Crypt.Encrypter();
-            cryptCommand.setArgs(new String[] { rawFile.getPath(), file.getPath() });
-            cryptCommand.run();
-        }
-
-        final DecoderChainSpec<DictionaryHeader> spec =
-                BinaryDictOffdeviceUtils.decodeDictionaryForProcess(file,
-                        new BinaryDictOffdeviceUtils.HeaderReaderProcessor());
-        assertNotNull("Can't decode a dictionary we just wrote : " + file, spec);
-        final DictionaryHeader header = spec.mResult;
-        assertEquals("raw" + (crypt ? " > encryption" : "") + (compress ? " > compression" : ""),
-                spec.describeChain());
-        assertEquals(header.mDictionaryOptions.mAttributes, options);
-    }
-
-    public void testHeaderReaderProcessor() throws IOException {
-        runTestHeaderReaderProcessorWithOneSpec(false /* compress */, false /* crypt */);
-        runTestHeaderReaderProcessorWithOneSpec(true /* compress */, false /* crypt */);
-        runTestHeaderReaderProcessorWithOneSpec(true /* compress */, true /* crypt */);
-    }
 }
diff --git a/tools/dicttool/tests/com/android/inputmethod/latin/dicttool/BinaryDictOffdeviceUtilsTests.java b/tools/dicttool/tests/com/android/inputmethod/latin/dicttool/BinaryDictOffdeviceUtilsTests.java
index 0fb4cf5..ea9d4cc 100644
--- a/tools/dicttool/tests/com/android/inputmethod/latin/dicttool/BinaryDictOffdeviceUtilsTests.java
+++ b/tools/dicttool/tests/com/android/inputmethod/latin/dicttool/BinaryDictOffdeviceUtilsTests.java
@@ -16,10 +16,17 @@
 
 package com.android.inputmethod.latin.dicttool;
 
+import com.android.inputmethod.latin.common.CodePointUtils;
+import com.android.inputmethod.latin.dicttool.BinaryDictOffdeviceUtils;
+import com.android.inputmethod.latin.dicttool.Compress;
+import com.android.inputmethod.latin.dicttool.Crypt;
+import com.android.inputmethod.latin.dicttool.BinaryDictOffdeviceUtils.DecoderChainSpec;
 import com.android.inputmethod.latin.makedict.BinaryDictIOUtils;
+import com.android.inputmethod.latin.makedict.BinaryDictUtils;
 import com.android.inputmethod.latin.makedict.DictDecoder;
 import com.android.inputmethod.latin.makedict.DictEncoder;
 import com.android.inputmethod.latin.makedict.DictionaryHeader;
+import com.android.inputmethod.latin.makedict.FormatSpec;
 import com.android.inputmethod.latin.makedict.FormatSpec.DictionaryOptions;
 import com.android.inputmethod.latin.makedict.FormatSpec.FormatOptions;
 import com.android.inputmethod.latin.makedict.FusionDictionary;
@@ -35,13 +42,37 @@
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.OutputStream;
+import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Random;
+import java.util.Set;
 
 /**
  * Unit tests for BinaryDictOffdeviceUtils
  */
 public class BinaryDictOffdeviceUtilsTests extends TestCase {
     private static final int TEST_FREQ = 37; // Some arbitrary value unlikely to happen by chance
+    private static final int CODE_POINT_SET_SIZE = 300;
+    final Random mRandom;
+    private static final ArrayList<String> sWords = new ArrayList<>();
+
+    public BinaryDictOffdeviceUtilsTests(final long seed, final int maxUnigrams) {
+        super();
+        mRandom = new Random(seed);
+        sWords.clear();
+        generateWords(maxUnigrams, mRandom);
+    }
+
+    private static void generateWords(final int maxUnigrams, final Random random) {
+        final int[] codePointSet = CodePointUtils.generateCodePointSet(
+                CODE_POINT_SET_SIZE, random);
+        final Set<String> wordSet = new HashSet<>();
+        while (wordSet.size() < maxUnigrams) {
+            wordSet.add(CodePointUtils.generateWord(random, codePointSet));
+        }
+        sWords.addAll(wordSet);
+    }
 
     public void testGetRawDictWorks() throws IOException, UnsupportedFormatException {
         final String VERSION = "1";
@@ -70,7 +101,7 @@
         try (final OutputStream out = Compress.getCompressedStream(
                 new BufferedOutputStream(new FileOutputStream(dst)))) {
             final DictEncoder dictEncoder = new Ver2DictEncoder(out);
-            dictEncoder.writeDictionary(dict, new FormatOptions(2, false));
+            dictEncoder.writeDictionary(dict, new FormatOptions(FormatSpec.VERSION202, false));
         }
 
         // Test for an actually compressed dictionary and its contents
@@ -119,4 +150,64 @@
         assertNull("Wrongly identified data file",
                 BinaryDictOffdeviceUtils.getRawDictionaryOrNull(gzDst));
     }
+
+    public void runTestHeaderReaderProcessorWithOneSpec(final boolean compress, final boolean crypt)
+            throws IOException, UnsupportedFormatException {
+        final String dictName = "testHeaderReaderProcessor";
+        final String dictVersion = Long.toString(System.currentTimeMillis());
+        final FormatOptions formatOptions = BinaryDictUtils.STATIC_OPTIONS;
+        final int MAX_NUMBER_OF_OPTIONS_TO_ADD = 5;
+        final HashMap<String, String> options = new HashMap<>();
+        // Required attributes
+        options.put("dictionary", "main:en_US");
+        options.put("locale", "en_US");
+        options.put("version", Integer.toString(mRandom.nextInt()));
+        // Add some random options for test
+        final int numberOfOptionsToAdd = mRandom.nextInt() % (MAX_NUMBER_OF_OPTIONS_TO_ADD + 1);
+        for (int i = 0; i < numberOfOptionsToAdd; ++i) {
+            options.put(sWords.get(2 * i), sWords.get(2 * 1 + 1));
+        }
+        final FusionDictionary dict = new FusionDictionary(new PtNodeArray(),
+                new DictionaryOptions(options));
+
+        for (int i = 0; i < sWords.size(); ++i) {
+            final String word = sWords.get(i);
+            dict.add(word, new ProbabilityInfo(TEST_FREQ), null /* shortcuts */,
+                    false /* isNotAWord */, false /* isPossiblyOffensive */);
+        }
+
+        File file = File.createTempFile(dictName, ".tmp");
+        final DictEncoder dictEncoder = BinaryDictUtils.getDictEncoder(file, formatOptions);
+        dictEncoder.writeDictionary(dict, formatOptions);
+
+        if (compress) {
+            final File rawFile = file;
+            file = File.createTempFile(dictName + ".compress", ".tmp");
+            final Compress.Compressor compressCommand = new Compress.Compressor();
+            compressCommand.setArgs(new String[] { rawFile.getPath(), file.getPath() });
+            compressCommand.run();
+        }
+        if (crypt) {
+            final File rawFile = file;
+            file = File.createTempFile(dictName + ".crypt", ".tmp");
+            final Crypt.Encrypter cryptCommand = new Crypt.Encrypter();
+            cryptCommand.setArgs(new String[] { rawFile.getPath(), file.getPath() });
+            cryptCommand.run();
+        }
+
+        final DecoderChainSpec<DictionaryHeader> spec =
+                BinaryDictOffdeviceUtils.decodeDictionaryForProcess(file,
+                        new BinaryDictOffdeviceUtils.HeaderReaderProcessor());
+        assertNotNull("Can't decode a dictionary we just wrote : " + file, spec);
+        final DictionaryHeader header = spec.mResult;
+        assertEquals("raw" + (crypt ? " > encryption" : "") + (compress ? " > compression" : ""),
+                spec.describeChain());
+        assertEquals(header.mDictionaryOptions.mAttributes, options);
+    }
+
+    public void testHeaderReaderProcessor() throws IOException, UnsupportedFormatException {
+        runTestHeaderReaderProcessorWithOneSpec(false /* compress */, false /* crypt */);
+        runTestHeaderReaderProcessorWithOneSpec(true /* compress */, false /* crypt */);
+        runTestHeaderReaderProcessorWithOneSpec(true /* compress */, true /* crypt */);
+    }
 }