tests: adding fake libosinfo module

Adding a fake libosinfo module in order to avoid mocking it and
perform tests against a fake library.

Partially implements blueprint libvirt-hardware-policy-from-libosinfo

Change-Id: Ia13123ffe46b9c791630d967fd5f4dc1ade0734b

1 files changed, 131 insertions, 0 deletions

diff --git a/nova/tests/unit/virt/fakelibosinfo.py b/nova/tests/unit/virt/fakelibosinfo.py
new file mode 100644
index 0000000000..470d5c52b2
--- /dev/null
+++ b/nova/tests/unit/virt/fakelibosinfo.py
@@ -0,0 +1,131 @@
+# Copyright 2016 Red Hat, Inc
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+
+def match_item(obj, fltr):
+    key, val = list(fltr._filter.items())[0]
+    if key == 'class':
+        key = '_class'
+    elif key == 'short-id':
+        key = 'short_id'
+    return getattr(obj, key, None) == val
+
+
+class Loader(object):
+
+    def process_default_path(self):
+        pass
+
+    def get_db(self):
+        return Db()
+
+
+class Db(object):
+
+    def __init__(self):
+        # Generate test devices
+        self.devs = []
+        self.oslist = None
+
+        net = Device()
+        net._class = 'net'
+        net.name = 'virtio-net'
+        self.devs.append(net)
+
+        net = Device()
+        net._class = 'block'
+        net.name = 'virtio-block'
+        self.devs.append(net)
+
+        devlist = DeviceList()
+        devlist.devices = self.devs
+
+        fedora = Os()
+        fedora.name = 'Fedora 22'
+        fedora.id = 'http://fedoraproject.org/fedora/22'
+        fedora.short_id = 'fedora22'
+        fedora.dev_list = devlist
+
+        self.oslist = OsList()
+        self.oslist.os_list = [fedora]
+
+    def get_os_list(self):
+        return self.oslist
+
+
+class Filter(object):
+    def __init__(self):
+        self._filter = {}
+
+    @classmethod
+    def new(cls):
+        return cls()
+
+    def add_constraint(self, flt_key, val):
+        self._filter[flt_key] = val
+
+
+class OsList(object):
+
+    def __init__(self):
+        self.os_list = []
+
+    def new_filtered(self, fltr):
+        new_list = OsList()
+        new_list.os_list = [os for os in self.os_list if match_item(os, fltr)]
+        return new_list
+
+    def get_length(self):
+        return len(self.os_list)
+
+    def get_nth(self, index):
+        return self.os_list[index]
+
+
+class Os(object):
+    def __init__(self):
+        self.name = None
+        self.short_id = None
+        self.id = None
+        self.dev_list = None
+
+    def get_all_devices(self, fltr):
+        new_list = DeviceList()
+        new_list.devices = [dev for dev in self.dev_list.devices
+                            if match_item(dev, fltr)]
+        return new_list
+
+    def get_name(self):
+        self.name
+
+
+class DeviceList(object):
+
+    def __init__(self):
+        self.devices = []
+
+    def get_length(self):
+        return len(self.devices)
+
+    def get_nth(self, index):
+        return self.devices[index]
+
+
+class Device(object):
+    def __init__(self):
+        self.name = None
+        self._class = None
+
+    def get_name(self):
+        return self.name