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AttributeError: 'WebElement' object has no attribute 'get_screenshot' #73
Description
Hi,
I started looking into needle (instead of ApliTools) and trying to create a test but facing an issue with this command:
element.get_screenshot().save(baseline_file)
In compareScreenshot() method cases.py file
File "C:\Python27\lib\site-packages\needle\cases.py", line 238, in compareScreenshot
element.get_screenshot().save(output_file)
AttributeError: 'WebElement' object has no attribute 'get_screenshot'
My guess that the driver that am referring to is the selenium web driver, but the one used in cases.py is the needle driver!
My code:
from needle.cases import NeedleTestCase
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from time import sleep
class NebulaTest(NeedleTestCase):
def init(self):
self.output_directory = "C:\screenshots"
self.baseline_directory = "C:\screenshots\baseline"
#self.engine_class = 'needle.engines.perceptualdiff_engine.Engine'
#engine_class = 'needle.engines.imagemagick_engine.Engine'
self.driver = webdriver.Chrome()
self.test_feedback()
def test_feedback(self):
#self.set_viewport_size(width=1024, height=768)
self.driver.get('https://kampyle25.tumblr.com/')
sleep(5)
#try:
# WebDriverWait(self.driver, 10).until(EC.presence_of_element_located((By.CSS_SELECTOR, "div.kampyle_button-text")))
#finally:
# self.driver.quit()
self.assertScreenshot('div.kampyle_button-text', 'feedback')
NebulaTest()
Thanks in advance.
Activity
mzbedat commentedon Jul 3, 2017
I switched to Needle Driver:
self.driver = self.get_web_driver()But now I'm getting:
This command line:
self.engine.assertSameFiles(output_file, baseline_file, threshold)From this link I can see that I need to download and install PerceptualDiff:
http://the-creative-tester.github.io/Python-Visual-Regression-Testing/
that's require:
But these aren't regular installations, the FreeImage for example is a dll... I have a feeling that am going in a wrong direction.
Can you please give more insights on it
mzbedat commentedon Jul 3, 2017
calling from my Test class:
self.setUpClass()did the trick.
I still have one question regarding saving the base-line image....
by running: nosetests Needle.py --with-save-baseline I'm getting
I order to come over it, I had overridden the save_base_line in my test class:
self.save_baseline = TrueIsn't there an option to pass it as parameter? the --with-save-baseline was suppose to deal with it, no?!
jeremyqa commentedon Aug 24, 2017
I had a similar problem at first but I believe I figured out what I was doing wrong. You need to use the driver object that has the NeedleWebDriverMixin. You're using regular chrome when you do
To do use the one with the Needle mixin, I overrode get_web_driver.
That came mostly from https://needle.readthedocs.io/en/latest/#selecting-a-webdriver