Added helpers to config tests for execution on idm-ci.

In order to run the tests in idm-ci we need to configure the our pytest
tests environment variables. This PR configures that automatically if an
environment variable TWD is available and $TWD/config exists.

tests/pytests/conftest.py

@@ -0,0 +1,50 @@
+# Authors:
+#   Sergio Oliveira Campos <seocam@redhat.com>
+#
+# Copyright (C) 2020 Red Hat
+# see file 'COPYING' for use and warranty information
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import os
+import yaml
+
+
+def get_inventory(inventory_path):
+    with open(inventory_path) as inventory_yaml:
+        return yaml.safe_load(inventory_yaml)
+
+
+def set_env_if_not_set(envvar, value):
+    if not os.getenv(envvar):
+        os.environ[envvar] = value
+
+
+def pytest_configure(config):
+    test_dir = os.getenv("TWD")
+    if not test_dir:
+        return
+
+    config_dir = os.path.join(test_dir, "config")
+    if os.path.exists(config_dir):
+        inventory_path = os.path.join(config_dir, "test.inventory.yaml")
+        inventory = get_inventory(inventory_path)
+        print("Configuring execution using {}".format(inventory_path))
+        ipaservers = inventory["all"]["children"]["ipaserver"]["hosts"]
+        ipaserver = list(ipaservers.values())[0]
+        private_key = os.path.join(config_dir, "id_rsa")
+
+        set_env_if_not_set("ANSIBLE_PRIVATE_KEY_FILE", private_key)
+        set_env_if_not_set("IPA_SERVER_HOST", ipaserver["ansible_host"])
+        set_env_if_not_set("ANSIBLE_REMOTE_USER", ipaserver["ansible_user"])