Make compute unit tests inherit from test.NoDBTestCase

This patch changes the `compute` tests-package(where it's possible)
to test.NoDBTestCase saving test case running time.

- nova.tests.unit.compute.test_compute.CheckConfigDriveTestCase
  before : Ran 3 tests in 1.891s
  after : Ran 3 tests in 0.100s

- nova.tests.unit.compute.test_flavors.ExtraSpecTestCase
  before : Ran 3 tests in 1.842s
  after : Ran 3 tests in 0.113s

- nova.tests.unit.compute.test_resources.TestVCPU
  before : Ran 6 tests in 1.897s
  after : Ran 6 tests in 0.116s

- nova.tests.unit.compute.test_resources.BaseTestCase
  before : Ran 9 tests in 1.990s
  after : Ran 9 tests in 0.149s

- nova.tests.unit.compute.test_rpcapi.ComputeRpcAPITestCase
  before : Ran 76 tests in 3.941s
  after : Ran 76 tests in 0.796s

- nova.tests.unit.compute.monitors.test_cpu_monitor.\
      ComputeDriverCPUMonitorTestCase
  before : Ran 2 tests in 3.883s
  after : Ran 2 tests in 0.287s

- nova.tests.unit.compute.monitors.test_monitors.\
      ResourceMonitorBaseTestCase
  before : Ran 2 tests in 4.028s
  after : Ran 2 tests in 0.254s

- nova.tests.unit.compute.monitors.test_monitors.\
      ResourceMonitorsTestCase
  before : Ran 5 tests in 8.937s
  after : Ran 5 tests in 0.402s

Change-Id: I5b71b6360061261daf28037b8f293844cc352c6f

nova/tests/unit/compute/monitors/test_cpu_monitor.py

@@ -36,7 +36,7 @@ class FakeLibvirt(object):
         return [0, 0, 0, 800, 0, 0, 0, 0]
 
 
-class ComputeDriverCPUMonitorTestCase(test.TestCase):
+class ComputeDriverCPUMonitorTestCase(test.NoDBTestCase):
     def setUp(self):
         super(ComputeDriverCPUMonitorTestCase, self).setUp()
 

nova/tests/unit/compute/monitors/test_monitors.py

@@ -78,7 +78,7 @@ class FakeMonitorClass4(monitors.ResourceMonitorBase):
         raise test.TestingException()
 
 
-class ResourceMonitorBaseTestCase(test.TestCase):
+class ResourceMonitorBaseTestCase(test.NoDBTestCase):
     def setUp(self):
         super(ResourceMonitorBaseTestCase, self).setUp()
         self.monitor = FakeResourceMonitor(None)
@@ -102,7 +102,7 @@ class ResourceMonitorBaseTestCase(test.TestCase):
         self.assertEqual(metrics["foo.metric2"], '99.999')
 
 
-class ResourceMonitorsTestCase(test.TestCase):
+class ResourceMonitorsTestCase(test.NoDBTestCase):
     """Test case for monitors."""
 
     def setUp(self):

nova/tests/unit/compute/test_compute.py

@@ -11411,7 +11411,7 @@ class ComputeInjectedFilesTestCase(BaseTestCase):
                                   expected, None, True, None, False)
 
 
-class CheckConfigDriveTestCase(test.TestCase):
+class CheckConfigDriveTestCase(test.NoDBTestCase):
     # NOTE(sirp): `TestCase` is far too heavyweight for this test, this should
     # probably derive from a `test.FastTestCase` that omits DB and env
     # handling

nova/tests/unit/compute/test_flavors.py

@@ -35,7 +35,7 @@ class ExtraSpecTestCase(test.NoDBTestCase):
         flavors.validate_extra_spec_keys(key_name_list)
 
 
-class CreateFlavorTestCase(test.TestCase):
+class CreateFlavorTestCase(test.NoDBTestCase):
     def test_create_flavor_ram_error(self):
         args = ("ram_test", "9999999999", "1", "10", "1")
         try:

nova/tests/unit/compute/test_resources.py

@@ -136,7 +136,7 @@ def fake_flavor_obj(**updates):
     return flavor
 
 
-class BaseTestCase(test.TestCase):
+class BaseTestCase(test.NoDBTestCase):
 
     def _initialize_used_res_counter(self):
         # Initialize the value for the used resource
@@ -285,7 +285,7 @@ class BaseTestCase(test.TestCase):
         self.assertIsInstance(ext.obj, vcpu.VCPU)
 
 
-class TestVCPU(test.TestCase):
+class TestVCPU(test.NoDBTestCase):
 
     def setUp(self):
         super(TestVCPU, self).setUp()

nova/tests/unit/compute/test_rpcapi.py

@@ -33,7 +33,7 @@ from nova.tests.unit import fake_instance
 CONF = cfg.CONF
 
 
-class ComputeRpcAPITestCase(test.TestCase):
+class ComputeRpcAPITestCase(test.NoDBTestCase):
 
     def setUp(self):
         super(ComputeRpcAPITestCase, self).setUp()