Add test_get_recent_draw_date test

tests/test_lottery_predictor_collect.py

@@ -1,3 +1,5 @@
+import datetime
+
 import pytest
 import lottery_predictor.collect as collect
 
@@ -7,3 +9,10 @@ def test_get_record_count() -> None:
     assert isinstance(collect.get_record_count('MegaMillionsDraw'), int)
     with pytest.raises(ValueError):
         collect.get_record_count('SomeNonExistentTable')
+
+
+def test_get_recent_draw_date() -> None:
+    assert isinstance(collect.get_recent_draw_date(table_name='PowerballDraw'), datetime.date)
+    assert isinstance(collect.get_recent_draw_date(table_name='MegaMillionsDraw'), datetime.date)
+    with pytest.raises(ValueError):
+        collect.get_recent_draw_date(table_name='SomeNonExistentTable')