pkg/crypto: move tests to unittest package

pkg/crypto/lib/src/hash_utils.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of crypto;
 
 // Constants.
 const _MASK_8 = 0xff;
 const _MASK_32 = 0xffffffff;
 const _BITS_PER_BYTE = 8;
 const _BYTES_PER_WORD = 4;
 
 // Helper functions used by more than one hasher.
 
 // Rotate left limiting to unsigned 32-bit values.
 int _rotl32(int val, int shift) {
   var mod_shift = shift & 31;
   return ((val << mod_shift) & _MASK_32) |
       ((val & _MASK_32) >> (32 - mod_shift));
 }
 
 // Base class encapsulating common behavior for cryptographic hash
 // functions.
 abstract class _HashBase implements Hash {
+  final int _chunkSizeInWords;
+  final int _digestSizeInWords;
+  final bool _bigEndianWords;
+  final List<int> _currentChunk;
+  final List<int> _h;
+  int _lengthInBytes = 0;
+  List<int> _pendingData;
+  bool _digestCalled = false;
+
   _HashBase(int chunkSizeInWords,
             int digestSizeInWords,
             bool this._bigEndianWords)
       : _pendingData = [],
         _currentChunk = new List(chunkSizeInWords),
         _h = new List(digestSizeInWords),
         _chunkSizeInWords = chunkSizeInWords,
         _digestSizeInWords = digestSizeInWords;
 
   // Update the hasher with more data.
@@ skipping 97 matching lines @@
     var lengthInBits = _lengthInBytes * _BITS_PER_BYTE;
     assert(lengthInBits < pow(2, 32));
     if (_bigEndianWords) {
       _pendingData.addAll(_wordToBytes(0));
       _pendingData.addAll(_wordToBytes(lengthInBits & _MASK_32));
     } else {
       _pendingData.addAll(_wordToBytes(lengthInBits & _MASK_32));
       _pendingData.addAll(_wordToBytes(0));
     }
   }
-
-  // Hasher state.
-  final int _chunkSizeInWords;
-  final int _digestSizeInWords;
-  final bool _bigEndianWords;
-  int _lengthInBytes = 0;
-  List<int> _pendingData;
-  final List<int> _currentChunk;
-  final List<int> _h;
-  bool _digestCalled = false;
 }