Add test to improve coverage

num2words/base.py

@@ -39,15 +39,12 @@ def __init__(self):
         self.errmsg_floatord = "Cannot treat float %s as ordinal."
         self.errmsg_negord = "Cannot treat negative num %s as ordinal."
         self.errmsg_toobig = "abs(%s) must be less than %s."
+        self.cards = OrderedDict()
+        self.set_numwords()
+        self.MAXVAL = 1000 * list(self.cards.keys())[0]
 
         self.setup()
 
-        # uses cards
-        if any(hasattr(self, field) for field in
-               ['high_numwords', 'mid_numwords', 'low_numwords']):
-            self.cards = OrderedDict()
-            self.set_numwords()
-            self.MAXVAL = 1000 * list(self.cards.keys())[0]
 
     def set_numwords(self):
         self.set_high_numwords(self.high_numwords)

tests/test_base.py

@@ -62,3 +62,16 @@ def test_is_title(self):
             self.base.title("one"),
             "one"
             )
+
+    def test_set_high_numwords_not_implemented(self):
+        with self.assertRaises(NotImplementedError):
+            self.base.set_high_numwords()
+
+    def test_to_ordinal(self):
+        from num2words.base import Num2Word_Base
+        self.base = Num2Word_Base()
+        self.assertEqual(self.base.to_ordinal(1), "1st")
+        self.assertEqual(self.base.to_ordinal(11), "11th")
+        self.assertEqual(self.base.to_ordinal(21), "21st")
+        self.assertEqual(self.base.to_ordinal(100), "100th")
+        self.assertEqual(self.base.to_ordinal(123), "123rd")