More optimisation and cleanup (#420)

conftest.py

@@ -1,9 +1,78 @@
 from django.conf import settings
 import django
+import pytest
+from django.core.management import call_command
+from RIGS.models import VatRate, Profile
+import random
+from django.db import connection
+from PyRIGS.tests import pages
+import os
+from selenium import webdriver
 
 
 def pytest_configure():
     settings.PASSWORD_HASHERS = (
         'django.contrib.auth.hashers.MD5PasswordHasher',
     )
+    settings.WHITENOISE_USE_FINDERS = True
+    settings.WHITENOISE_AUTOREFRESH = True
+    # TODO Why do we need this, with the above options enabled?
+    settings.STATICFILES_DIRS += [
+        os.path.join(settings.BASE_DIR, 'static/'),
+    ]
     django.setup()
+
+
+@pytest.fixture  # Overrides the one from pytest-django
+def admin_user(admin_user):
+    admin_user.username = "EventTest"
+    admin_user.first_name = "Event"
+    admin_user.last_name = "Test"
+    admin_user.initials = "ETU"
+    admin_user.save()
+    return admin_user
+
+
+@pytest.fixture
+def logged_in_browser(live_server, admin_user, browser, db):
+    login_page = pages.LoginPage(browser.driver, live_server.url).open()
+    login_page.login(admin_user.username, "password")
+    yield browser
+
+
+@pytest.fixture(scope='session')
+def splinter_driver_kwargs():
+    options = webdriver.ChromeOptions()
+    options.add_argument("--window-size=1920,1080")
+    options.add_argument("--headless")
+    if settings.CI:
+        options.add_argument("--no-sandbox")
+    return {"options": options}
+
+
+@pytest.fixture(scope='session')
+def splinter_webdriver():
+    return 'chrome'
+
+
+@pytest.fixture(scope='session')
+def splinter_screenshot_dir():
+    return 'screenshots/'
+
+
+@pytest.fixture(autouse=True)  # Also enables DB access for all tests as a useful side effect
+def vat_rate(db):
+    vat_rate = VatRate.objects.create(start_at='2014-03-05', rate=0.20, comment='test1')
+    yield vat_rate
+    vat_rate.delete()
+
+
+def _has_transactional_marker(item):
+    db_marker = item.get_closest_marker("django_db")
+    if db_marker and db_marker.kwargs.get("transaction"):
+        return 1
+    return 0
+
+
+def pytest_collection_modifyitems(items):
+    items.sort(key=_has_transactional_marker)