fix linter

pylenium/performance.py

@@ -118,7 +118,6 @@ def measure(self, mark) -> float:
         js = 'return performance.measure("Measure", "{}");'.format(mark)
         measured = self._wait().until(lambda driver: driver.execute_script(js), "PerformanceMeasure not generated yet")
         return PerformanceMeasure(**measured).duration
-
 
 class PerformanceMeasure(BaseModel):
     """The PerformanceMeasure Representation.

tests/test_flows.py

@@ -27,8 +27,8 @@ def test_add_to_cart_xpath(self, sauce: Pylenium):
         sauce.getx("//a[@class='shopping_cart_link']").click()
         assert sauce.findx("//*[@class='cart_item']").should().have_length(6)
 
-    def test_add_to_cart_xpath(self, sauce: Pylenium):
-        """Add 6 different items to the cart. There should be 6 items in the cart."""
+    def test_add_to_cart_xpath_duration(self, sauce: Pylenium):
+        """Add 6 different items to the cart. There should be 6 items in the cart. Duration should be less than 2000ms"""
         sauce.performance.mark("Adding item in cart")
         for button in sauce.findx("//*[contains(@id, 'add-to-cart')]"):
             button.click()