Isolate exception testing in a new test

Improve the testing of exceptions using pytest.raises(). Closes #77

Author: dagpunk

src/tests/test_flip_coins_function.py

@@ -9,7 +9,7 @@
 
 @pytest.mark.parametrize(
     "coin_flip_count",
-    list(range(11)) + list(range(10, 200, 10)) + [1, 2] * 30
+    list(range(1, 12)) + list(range(10, 200, 10)) + [1, 2] * 30
 )
 def test_multiple_coin_flips(coin_flip_count: int) -> None:
     """Example test case
@@ -20,13 +20,18 @@ def test_multiple_coin_flips(coin_flip_count: int) -> None:
     Returns:
     None
     """
-    try:
-        coin_flip_result = src.flip_coins.flip_coins(
-            coin_flip_count=coin_flip_count,
-            chosen_side="heads"
+    coin_flip_result = src.flip_coins.flip_coins(
+        coin_flip_count=coin_flip_count,
+        chosen_side="heads"
+    )
+    logging.debug("coin_flip_result = %s", coin_flip_result)
+    assert coin_flip_result["outcome"][0] in ["won", "lost", "tie"]
+
+
+def test_multiple_coin_flip_zero_times() -> None:
+    """Test the exception handling of flip_coins when asked to flip 0 coins"""
+    with pytest.raises(AssertionError):
+        src.flip_coins.flip_coins(
+            coin_flip_count=0,
+            chosen_side="tails"
         )
-        logging.debug("coin_flip_result = %s", coin_flip_result)
-        assert coin_flip_result["outcome"][0] in ["won", "lost", "tie"]
-    except AssertionError as error:
-        # Validate that trying to flip 0 coins causes an error
-        assert isinstance(error, AssertionError) and coin_flip_count == 0