Silence pytest.yield_fixture deprecation warning

pytest >= 2.10 supports yield based fixtures with pytest.fixture. In
pytest < 2.10 pytest.yield_fixture is required. But that function
also raises a deprecation warning in pytest >= 3.0. FreeIPA has to stay
compatible with pytest < 2.10 for RHEL 7 testing.

https://docs.pytest.org/en/latest/fixture.html#fixture-finalization-executing-teardown-code

https://pagure.io/freeipa/issue/6591

Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Martin Basti <mbasti@redhat.com>

ipatests/pytest_plugins/integration/__init__.py

@@ -30,6 +30,7 @@ from pytest_multihost import make_multihost_fixture
 
 from ipapython import ipautil
 from ipapython.ipa_log_manager import log_mgr
+from ipatests.test_util import yield_fixture
 from .config import Config
 from .env_config import get_global_config
 from . import tasks
@@ -143,7 +144,7 @@ def class_integration_logs():
     return {}
 
 
-@pytest.yield_fixture
+@yield_fixture
 def integration_logs(class_integration_logs, request):
     """Provides access to test integration logs, and collects after each test
     """
@@ -151,7 +152,7 @@ def integration_logs(class_integration_logs, request):
     collect_test_logs(request.node, class_integration_logs, request.config)
 
 
-@pytest.yield_fixture(scope='class')
+@yield_fixture(scope='class')
 def mh(request, class_integration_logs):
     """IPA's multihost fixture object
     """

ipatests/test_ipaserver/test_kadmin.py

@@ -13,9 +13,10 @@ import tempfile
 from ipalib import api
 
 from ipaserver.install import installutils
+from ipatests.test_util import yield_fixture
 
 
-@pytest.yield_fixture()
+@yield_fixture()
 def keytab():
     fd, keytab_path = tempfile.mkstemp(suffix='.keytab')
     os.close(fd)

ipatests/test_util.py

@@ -35,6 +35,17 @@ if six.PY3:
 pytestmark = pytest.mark.tier0
 
 
+# pytest >= 2.10 supports yield based fixtures with pytest.fixture. In
+# pytest < 2.10 pytest.yield_fixture is required. But that function
+# also raises a deprecation warning in pytest >= 3.0.
+PYTEST_VERSION = tuple(int(p) for p in pytest.__version__.split('.'))
+
+if PYTEST_VERSION < (2, 10):
+    yield_fixture = pytest.yield_fixture
+else:
+    yield_fixture = pytest.fixture
+
+
 class Prop(object):
     def __init__(self, *ops):
         self.__ops = frozenset(ops)

ipatests/test_xmlrpc/test_host_plugin.py

@@ -34,6 +34,7 @@ from ipapython import ipautil
 from ipalib import api, errors, x509
 from ipapython.dn import DN
 from ipapython.dnsutil import DNSName
+from ipatests.test_util import yield_fixture
 from ipatests.test_xmlrpc.xmlrpc_test import (XMLRPC_test,
     fuzzy_uuid, fuzzy_digits, fuzzy_hash, fuzzy_date, fuzzy_issuer,
     fuzzy_hex, raises_exact)
@@ -505,7 +506,7 @@ class TestValidation(XMLRPC_test):
         ), result)
 
 
-@pytest.yield_fixture
+@yield_fixture
 def keytabname(request):
     keytabfd, keytabname = tempfile.mkstemp()
     try:
@@ -589,7 +590,7 @@ class TestHostFalsePwdChange(XMLRPC_test):
             command()
 
 
-@pytest.yield_fixture(scope='class')
+@yield_fixture(scope='class')
 def dns_setup(host):
     try:
         host.run_command('dnszone_del', dnszone, revzone, revipv6zone,

ipatests/test_xmlrpc/test_kerberos_principal_aliases.py

@@ -10,6 +10,7 @@ from ipalib import errors, api
 from ipapython import ipautil
 from ipaplatform.paths import paths
 
+from ipatests.test_util import yield_fixture
 from ipatests.util import MockLDAP
 from ipatests.test_xmlrpc.xmlrpc_test import XMLRPC_test
 from ipatests.test_xmlrpc.tracker.user_plugin import UserTracker
@@ -33,7 +34,7 @@ TRUSTED_DOMAIN_MOCK['ldif'] = get_trusted_dom_dict(
 )
 
 
-@pytest.yield_fixture
+@yield_fixture
 def trusted_domain():
     """Fixture providing mocked AD trust entries
 
@@ -51,7 +52,7 @@ def trusted_domain():
         ldap.del_entry(trusted_dom['dn'])
 
 
-@pytest.yield_fixture
+@yield_fixture
 def trusted_domain_with_suffix():
     """Fixture providing mocked AD trust entries