Add doctest for calculate_prime_numbers

project_euler/problem_187/sol1.py

@@ -21,6 +21,9 @@ def slow_calculate_prime_numbers(max_number: int) -> list[int]:
 
     >>> slow_calculate_prime_numbers(10)
     [2, 3, 5, 7]
+
+    >>> slow_calculate_prime_numbers(2)
+    []
     """
 
     # List containing a bool value for every number below max_number/2
@@ -42,6 +45,9 @@ def calculate_prime_numbers(max_number: int) -> list[int]:
 
     >>> calculate_prime_numbers(10)
     [2, 3, 5, 7]
+
+    >>> calculate_prime_numbers(2)
+    []
     """
 
     if max_number <= 2: