[lxc-devel] [pylxd/master] Remove broken migration tests and fix cert discovery

[ajkavanagh on Github]

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From 8b1c42041904876c2b05872e52b1377f45bf36cb Mon Sep 17 00:00:00 2001
From: Alex Kavanagh <alex.kavanagh at canonical.com>
Date: Thu, 20 Dec 2018 16:11:37 +0000
Subject: [PATCH] Remove broken migration tests and fix cert discovery

The migration tests merged as part of the migration code (commit
ad07da988082249dfbffc27f02b422a93c19e765) are basically broken; the
actual code is fine / this commit removes those tests (skips) so that CI
can continue.

The second part is improving the cert discovery for the client which is
broken if 'lxd.migrate' is issued on a bionic machine.  This tightens
the discovery.
---
 integration/test_containers.py |  5 +++++
 pylxd/client.py                | 14 +++++++++-----
 2 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/integration/test_containers.py b/integration/test_containers.py
index 0bf1a5a4..e00adf86 100644
--- a/integration/test_containers.py
+++ b/integration/test_containers.py
@@ -11,6 +11,8 @@
 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 #    License for the specific language governing permissions and limitations
 #    under the License.
+import unittest
+
 from pylxd import exceptions
 from integration.testing import IntegrationTestCase
 
@@ -208,6 +210,7 @@ def test_publish(self):
     # This test is commented because CRIU does NOT work
     # in LXD inside LXD
 
+    @unittest.skip("This test is broken as it assumes particular network")
     def test_migrate_running(self):
         """A running container is migrated."""
         from pylxd.client import Client
@@ -231,6 +234,7 @@ def test_migrate_running(self):
         self.assertEqual(client2,
                          an_migrated_container.client)
 
+    @unittest.skip("This test is broken as it assumes particular network")
     def test_migrate_local_client(self):
         """Raise ValueError, cannot migrate from local connection"""
         from pylxd.client import Client
@@ -243,6 +247,7 @@ def test_migrate_local_client(self):
         self.assertRaises(ValueError,
                           self.container.migrate, client2)
 
+    @unittest.skip("This test is broken as it assumes particular network")
     def test_migrate_stopped(self):
         """A stopped container is migrated."""
         from pylxd.client import Client
diff --git a/pylxd/client.py b/pylxd/client.py
index c1edf401..1aea09e1 100644
--- a/pylxd/client.py
+++ b/pylxd/client.py
@@ -31,17 +31,21 @@
 requests_unixsocket.monkeypatch()
 
 LXD_PATH = '.config/lxc/'
-SNAP_ROOT = '~/snap/lxd/current/'
-APT_ROOT = '~/'
-if os.path.exists(os.path.expanduser(SNAP_ROOT)):  # pragma: no cover
+SNAP_ROOT = os.path.expanduser('~/snap/lxd/current/')
+APT_ROOT = os.path.expanduser('~/')
+CERT_FILE_NAME = 'client.crt'
+KEY_FILE_NAME = 'client.key'
+# check that the cert file and key file exist at the appopriate path
+if os.path.exists(os.path.join(
+        SNAP_ROOT, LXD_PATH, CERT_FILE_NAME)):  # pragma: no cover
     CERTS_PATH = os.path.join(SNAP_ROOT, LXD_PATH)  # pragma: no cover
 else:  # pragma: no cover
     CERTS_PATH = os.path.join(APT_ROOT, LXD_PATH)  # pragma: no cover
 
 Cert = namedtuple('Cert', ['cert', 'key'])  # pragma: no cover
 DEFAULT_CERTS = Cert(
-    cert=os.path.expanduser(os.path.join(CERTS_PATH, 'client.crt')),
-    key=os.path.expanduser(os.path.join(CERTS_PATH, 'client.key'))
+    cert=os.path.expanduser(os.path.join(CERTS_PATH, CERT_FILE_NAME)),
+    key=os.path.expanduser(os.path.join(CERTS_PATH, KEY_FILE_NAME))
 )  # pragma: no cover