Code refactoring - Watcher Decision Engine package

This patchset is there to change the code structure.
The objective is to flatten the project file tree by merging
'api/' and 'framework/' into a single package. This also contains
some tidy ups in package naming (like using only singular nouns).

This should only affect file/folder names and their subsequent
import paths wherever they were used.

Change-Id: Ie903ba20ca5cf03b0b42efa60131d1b919b0c2c9

watcher/tests/decision_engine/model/test_mapping.py

@@ -0,0 +1,106 @@
+# -*- encoding: utf-8 -*-
+# Copyright (c) 2015 b<>com
+#
+# Authors: Jean-Emile DARTOIS <jean-emile.dartois@b-com.com>
+#
+# 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.
+#
+import uuid
+from watcher.decision_engine.model.hypervisor import Hypervisor
+from watcher.decision_engine.model.vm_state import VMState
+from watcher.tests import base
+from watcher.tests.decision_engine.faker_cluster_state import \
+    FakerModelCollector
+
+
+class TestMapping(base.BaseTestCase):
+    def test_get_node_from_vm(self):
+        fake_cluster = FakerModelCollector()
+        model = fake_cluster.generate_scenario_4_with_2_hypervisors()
+
+        vms = model.get_all_vms()
+        keys = vms.keys()
+        vm = vms[keys[0]]
+        if vm.uuid != 'VM_0':
+            vm = vms[keys[1]]
+        node = model.mapping.get_node_from_vm(vm)
+        self.assertEqual(node.uuid, 'Node_0')
+
+    def test_get_node_from_vm_id(self):
+        fake_cluster = FakerModelCollector()
+        model = fake_cluster.generate_scenario_4_with_2_hypervisors()
+
+        hyps = model.mapping.get_node_vms_from_id("BLABLABLA")
+        self.assertEqual(hyps.__len__(), 0)
+
+    def test_get_all_vms(self):
+        fake_cluster = FakerModelCollector()
+        model = fake_cluster.generate_scenario_4_with_2_hypervisors()
+
+        vms = model.get_all_vms()
+        self.assertEqual(vms.__len__(), 2)
+        self.assertEqual(vms['VM_0'].state, VMState.ACTIVE.value)
+        self.assertEqual(vms['VM_0'].uuid, 'VM_0')
+        self.assertEqual(vms['VM_1'].state, VMState.ACTIVE.value)
+        self.assertEqual(vms['VM_1'].uuid, 'VM_1')
+
+    def test_get_mapping(self):
+        fake_cluster = FakerModelCollector()
+        model = fake_cluster.generate_scenario_4_with_2_hypervisors()
+
+        mapping_vm = model.mapping.get_mapping_vm()
+        self.assertEqual(mapping_vm.__len__(), 2)
+        self.assertEqual(mapping_vm['VM_0'], 'Node_0')
+        self.assertEqual(mapping_vm['VM_1'], 'Node_1')
+
+    def test_migrate_vm(self):
+        fake_cluster = FakerModelCollector()
+        model = fake_cluster.generate_scenario_4_with_2_hypervisors()
+        vms = model.get_all_vms()
+        keys = vms.keys()
+        vm0 = vms[keys[0]]
+        hyp0 = model.mapping.get_node_from_vm_id(vm0.uuid)
+        vm1 = vms[keys[1]]
+        hyp1 = model.mapping.get_node_from_vm_id(vm1.uuid)
+
+        self.assertEqual(model.mapping.migrate_vm(vm1, hyp1, hyp1), False)
+        self.assertEqual(model.mapping.migrate_vm(vm1, hyp0, hyp0), False)
+        self.assertEqual(model.mapping.migrate_vm(vm1, hyp1, hyp0), True)
+        self.assertEqual(model.mapping.migrate_vm(vm1, hyp0, hyp1), True)
+
+    def test_unmap_from_id_log_warning(self):
+        fake_cluster = FakerModelCollector()
+        model = fake_cluster.generate_scenario_4_with_2_hypervisors()
+        vms = model.get_all_vms()
+        keys = vms.keys()
+        vm0 = vms[keys[0]]
+        id = "{0}".format(uuid.uuid4())
+        hypervisor = Hypervisor()
+        hypervisor.uuid = id
+
+        model.mapping.unmap_from_id(hypervisor.uuid, vm0.uuid)
+        # self.assertEqual(len(model.mapping.get_node_vms_from_id(
+        # hypervisor.uuid)), 1)
+
+    def test_unmap_from_id(self):
+        fake_cluster = FakerModelCollector()
+        model = fake_cluster.generate_scenario_4_with_2_hypervisors()
+        vms = model.get_all_vms()
+        keys = vms.keys()
+        vm0 = vms[keys[0]]
+        hyp0 = model.mapping.get_node_from_vm_id(vm0.uuid)
+
+        model.mapping.unmap_from_id(hyp0.uuid, vm0.uuid)
+        self.assertEqual(len(model.mapping.get_node_vms_from_id(
+            hyp0.uuid)), 0)