Add UTF-8 tests

tests/test_all.nim

@@ -1,6 +1,11 @@
 import
   ../zxcvbn
 
+proc passwordEntropy(x: string): float =
+  result = zxcvbn.passwordEntropy(x)
+  echo x, " = ", result
+
+# ASCII passwords:
 let
   a = passwordEntropy "a"
   cat = passwordEntropy "cat"
@@ -21,4 +26,18 @@ doAssert remixedQwerty > cat
 doAssert remixedQwerty > a
 doAssert remixedQwerty > longRepeatingSequence
 
+# UTF-8 Passwords:
+let
+  bulgarianPassword = passwordEntropy("парола")
+  bulgarianRepeatingSeq = passwordEntropy("яяяяяя")
+  japanesePassword = passwordEntropy("パスワード")
+  japaneseRepeatingSeq = passwordEntropy("パパパパパ")
+  chinesePassword = passwordEntropy("密碼")
+  chineseFourWords = passwordEntropy("正確的馬電池釘書釘")
+
+doAssert bulgarianPassword > bulgarianRepeatingSeq
+doAssert japanesePassword > japaneseRepeatingSeq
+doAssert chineseFourWords > chinesePassword
+
 echo "SUCCESS"
+