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node_modules/hash.js/test/hash-test.js

@@ -2,6 +2,7 @@
 /* global describe it */
 
 var assert = require('assert');
+var crypto = require('crypto');
 var hash = require('../');
 
 describe('Hash', function() {
@@ -121,4 +122,19 @@ describe('Hash', function() {
       ]
     ]);
   });
+
+  it('handles utf8 in strings just like crypto', function() {
+    const algorithm = 'sha256';
+    test(hash[algorithm], [
+      'hello', // one byte per character
+      'привет', // two bytes per character
+      '您好', // three bytes per character
+      '👋', // four bytes per character
+      'hello привет 您好 👋!!!' // mixed character lengths
+    ].map(str => [str, crypto
+      .createHash(algorithm)
+      .update(str)
+      .digest('hex')]));
+  });
+
 });