increased flexibility of test by adding blank space tolerance

Author: UmiKami

exercises/04-Call-a-function/tests.py

@@ -48,5 +48,5 @@ def test_call_calculate_area():
     path = os.path.dirname(os.path.abspath(__file__))+'/app.py'
     with open(path, 'r') as content_file:
         content = content_file.read()
-        regex = re.compile(r"=(\s*)calculate_area\(")
+        regex = re.compile(r"=(\s*)calculate_area\s*\(")
         assert bool(regex.search(content)) == True