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+import os
+from pyramid.paster import get_appsettings
+from pyramid.scripting import prepare
+from pyramid.testing import DummyRequest
+import pytest
+import webtest
+
+from myproject import main
+
+
+def pytest_addoption(parser):
+ parser.addoption('--ini', action='store', metavar='INI_FILE')
+
+@pytest.fixture(scope='session')
+def ini_file(request):
+ # potentially grab this path from a pytest option
+ return os.path.abspath(request.config.option.ini or 'testing.ini')
+
+@pytest.fixture(scope='session')
+def app_settings(ini_file):
+ return get_appsettings(ini_file)
+
+@pytest.fixture(scope='session')
+def app(app_settings):
+ return main({}, **app_settings)
+
+@pytest.fixture
+def testapp(app):
+ testapp = webtest.TestApp(app, extra_environ={
+ 'HTTP_HOST': 'example.com',
+ })
+
+ return testapp
+
+@pytest.fixture
+def app_request(app):
+ """
+ A real request.
+
+ This request is almost identical to a real request but it has some
+ drawbacks in tests as it's harder to mock data and is heavier.
+
+ """
+ env = prepare(registry=app.registry)
+ request = env['request']
+ request.host = 'example.com'
+
+ yield request
+ env['closer']()
+
+@pytest.fixture
+def dummy_request(app):
+ """
+ A lightweight dummy request.
+
+ This request is ultra-lightweight and should be used only when the
+ request itself is not a large focus in the call-stack.
+
+ It is way easier to mock and control side-effects using this object.
+
+ - It does not have request extensions applied.
+ - Threadlocals are not properly pushed.
+
+ """
+ request = DummyRequest()
+ request.registry = app.registry
+ request.host = 'example.com'
+
+ return request