initial commit test suite

src/fancymath/math.py

@@ -15,6 +15,14 @@ def fact(n: int) -> int:
         return n * fact(n - 1)
 
 
+def is_even(x):
+    return x % 2 == 0
+
+
+def is_odd(x):
+    return x % 2 == 1
+
+
 if __name__ == '__main__':
     n = 5
     assert fact(n) == 120