Fix selenium crash (#19)

* [CI] actually fail job when tests fail

The exit code from tests was being masked by the exit codes reported
when generating coverage reports which meant that even if tests failed,
as long as coverage report generation was succesful, the job would not
fail.

Therefore the exit code for tests is now stored and used.

* [FIX] update chrome resource limits

With previous resource limits Selenium tests would crash with a "window
tab crashed" error message. The new limits match Odoo's limits used for
testing[1] and fix said issue.

[1] https://github.com/Vauxoo/odoo/blob/9d51fa9d/odoo/tests/common.py#L1003

.docker/entrypoint.sh

@@ -1,6 +1,10 @@
 #!/bin/bash
 
 coverage run /usr/bin/odoo -i test_selenium --test-tags /test_selenium --workers=0 --stop-after-init
+TEST_EXIT_CODE=$?
+
 coverage report --show-missing
 coverage html
 coverage xml
+
+exit "$TEST_EXIT_CODE"

src/odoo_selenium/selenium.py

@@ -4,7 +4,7 @@
 import logging
 import unittest
 from os import environ
-from resource import RLIMIT_AS, setrlimit
+from resource import RLIM_INFINITY, RLIMIT_AS, setrlimit
 from urllib.parse import urljoin
 
 from selenium.webdriver import Chrome, ChromeOptions, Remote
@@ -85,7 +85,7 @@ def start_selenium(self):
         if grid_url:
             self.driver = Remote(command_executor=grid_url, options=ChromeOptions())
         else:
-            setrlimit(RLIMIT_AS, (16**9, 16**9))
+            setrlimit(RLIMIT_AS, (RLIM_INFINITY, RLIM_INFINITY))
 
             options = Options()
             for key, value in self.chrome_flags.items():