Added support for Tunisian Dinar (#593)

* Added support for Tunisian Dinar

* Added tests for TND currency

* Set parPrecision for other AR currencies

---------

Co-authored-by: Marlon Rodriguez Garcia <47992153+mrodriguezg1991@users.noreply.github.com>

Author: rochdi80tn

num2words/lang_AR.py

@@ -31,6 +31,8 @@
                 ("قرش", "قرشان", "قروش", "قرش")]
 CURRENCY_KWD = [("دينار", "ديناران", "دينارات", "ديناراً"),
                 ("فلس", "فلسان", "فلس", "فلس")]
+CURRENCY_TND = [("دينار", "ديناران", "دينارات", "ديناراً"),
+                ("مليماً", "ميلمان", "مليمات", "مليم")]
 
 ARABIC_ONES = [
     "", "واحد", "اثنان", "ثلاثة", "أربعة", "خمسة", "ستة", "سبعة", "ثمانية",
@@ -352,15 +354,22 @@ def validate_number(self, number):
         return number
 
     def set_currency_prefer(self, currency):
-        if currency == 'EGP':
+        if currency == 'TND':
+            self.currency_unit = CURRENCY_TND[0]
+            self.currency_subunit = CURRENCY_TND[1]
+            self.partPrecision = 3
+        elif currency == 'EGP':
             self.currency_unit = CURRENCY_EGP[0]
             self.currency_subunit = CURRENCY_EGP[1]
+            self.partPrecision = 2
         elif currency == 'KWD':
             self.currency_unit = CURRENCY_KWD[0]
             self.currency_subunit = CURRENCY_KWD[1]
+            self.partPrecision = 2
         else:
             self.currency_unit = CURRENCY_SR[0]
             self.currency_subunit = CURRENCY_SR[1]
+            self.partPrecision = 2
 
     def to_currency(self, value, currency='SR', prefix='', suffix=''):
         self.set_currency_prefer(currency)

tests/test_ar.py

@@ -66,6 +66,12 @@ def test_currency_parm(self):
         self.assertEqual(
             num2words(1000000.99, to='currency', lang='ar', currency="KWD"),
             'مليون دينار و تسع و تسعون فلس')
+        self.assertEqual(
+            num2words(1000.42, to='currency', lang='ar', currency="TND"),
+            'ألف دينار و أربعمائة و عشرون مليم')
+        self.assertEqual(
+            num2words(123.21, to='currency', lang='ar', currency="TND"),
+            'مائة و ثلاثة و عشرون ديناراً و مئتان و عشر مليمات')
 
     def test_ordinal(self):