Unable to run selenium tests on chrome locally on Mac

Question

I am trying to run chrome tests locally on Mac(El Capitan) , however i am unable to run the tests locally on chrome , i am able to invoke chrome using remote webdriver. But when i try to run the tests without the remote webdriver ie invoking chrome directly I am getting error

    driver/chrome/webdriver.py", line 62, in __init__
    self.service.start()
  File "/Users/testuser/practise/venv/lib/python2.7/site-packages/selenium/webdriver/common/service.py", line 92, in start
    raise WebDriverException("Can not connect to the Service %s" % self.path)
WebDriverException: Message: Can not connect to the Service chromedriver

I have the chromedriver binary located in /usr/local/bin and i have the same in my PATH as well.

Selenium Version: selenium (2.53.6)
Chromedriver Version: 2.24.417412
Python Version: 2.7.10

MY sample script

# Import unittest module for creating unit tests
import unittest

# Import time module to implement
import time

# Import the Selenium 2 module (aka "webdriver")
from selenium import webdriver

# For automating data input
from selenium.webdriver.common.keys import Keys

# For providing custom configurations for Chrome to run
from selenium.webdriver.chrome.options import Options


# --------------------------------------
# Provide a class for the unit test case
class PythonOrgSearchChrome(unittest.TestCase):

    # Anything declared in setUp will be executed for all test cases
    def setUp(self):
        # Select which device you want to emulate by uncommenting it
        # More information at: https://sites.google.com/a/chromium.org/chromedriver/mobile-emulation
        mobile_emulation = {

            "deviceName": "Google Nexus 5"
            # Or specify a specific build using the following two arguments
            #"deviceMetrics": { "width": 360, "height": 640, "pixelRatio": 3.0 },
            #"userAgent": "Mozilla/5.0 (Linux; Android 4.2.1; en-us; Nexus 5 Build/JOP40D) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.166 Mobile Safari/535.19" }
        }

        # Define a variable to hold all the configurations we want
        chrome_options = webdriver.ChromeOptions()

        # Add the mobile emulation to the chrome options variable
        chrome_options.add_experimental_option("mobileEmulation", mobile_emulation)

        # Create driver, pass it the path to the chromedriver file and the special configurations you want to run
        self.driver = webdriver.Chrome(chrome_options=chrome_options)

    # An individual test case. Must start with 'test_' (as per unittest module)
    def test_search_in_python_chrome(self):
        # Assigning a local variable for the global driver
        driver = self.driver

        # Go to google.com
        driver.get('http://www.google.com')

        # A test to ensure the page has keyword Google in the page title
        self.assertIn("Google", driver.title)



        # Find and select the search box element on the page
        search_box = driver.find_element_by_name('q')

        # Enter text into the search box
        search_box.send_keys('Cat gif')

        # Make sure the results page returned something
        assert "No results found." not in driver.page_source

        # Submit the search box form
        search_box.submit()

        # Can also use Keys function to submit
        #search_box.send_keys(Keys.RETURN)

        # Another pause so we can see what's going on
        time.sleep(5)

        # Take a screenshot of the results
        driver.save_screenshot('screenshot-deskto-chrome.png')

    # Anything declared in tearDown will be executed for all test cases
    def tearDown(self):
        # Close the browser.
        # Note close() will close the current tab, if its the last tab it will close the browser. To close the browser entirely use quit()
        self.driver.close()

# Boilerplate code to start the unit tests
if __name__ == "__main__":
    unittest.main()

I am really not sure what is happening , because i am able to launch the browser using remote webdriver, Any help would be greatly appreciated.

Answer 1

I think i have found the answer , in my /etc/hosts localhost was mapped to something else as a result which i was getting

driver/chrome/webdriver.py", line 62, in __init__
    self.service.start()
  File "/Users/testuser/practise/venv/lib/python2.7/site-packages/selenium/webdriver/common/service.py", line 92, in start
    raise WebDriverException("Can not connect to the Service %s" % self.path)
WebDriverException: Message: Can not connect to the Service chromedriver