Add test to improve coverage

tests/test_base.py

@@ -62,3 +62,34 @@ 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_splitnum_with_remainder(self):
+        from num2words.base import Num2Word_Base
+        self.base = Num2Word_Base()
+        value = 12345
+        expected_output = [
+            [(self.base.cards[1], 1)],
+            [(self.base.cards[2], 2)],
+            [(self.base.cards[3], 3)],
+            [(self.base.cards[4], 4)],
+            [(self.base.cards[5], 5)]
+        ]
+        self.assertEqual(self.base.splitnum(value),
+                         expected_output)
+
+        # Additional test case for the specific conditional
+        value = 12345.67
+        expected_output = [
+            [(self.base.cards[1], 1)],
+            [(self.base.cards[2], 2)],
+            [(self.base.cards[3], 3)],
+            [(self.base.cards[4], 4)],
+            [(self.base.cards[5], 5)],
+            [(self.base.cards[67], 67)]
+        ]
+        self.assertEqual(self.base.splitnum(value),
+                         expected_output)