Derive Params (part 1): Initial workflow to start

This initial workflow which starts the derive parameters workflow is
responsible to get the list of role names from the flattened heat
resource tree. Once the role names list is obtained, derive parameters
per role workflow is invoked to get introspection data of first
matching node for all role names.
Implements: blueprint tripleo-derive-parameters

Co-Authored-By: Jaganathan Palanisamy <jpalanis@redhat.com>
Co-Authored-By: Alan Bishop <abishop@redhat.com>
Change-Id: I113f3e6f67c7dbdad74264afb17dfca0612008c4

tripleo_common/tests/utils/test_parameters.py

@@ -13,6 +13,7 @@
 
 import mock
 
+from tripleo_common import exception
 from tripleo_common.tests import base
 from tripleo_common.utils import parameters
 
@@ -121,3 +122,68 @@ class ParametersTest(base.TestCase):
         # the 'compute' flavor.
         self.assertEqual(parameters.get_flavor('compute', compute_client),
                          'compute')
+
+    def test_profile_flavor_found(self):
+        compute_client = mock.MagicMock()
+
+        # Mock for a compute_client.flavors.find result item
+        flavor = mock.MagicMock()
+        flavor.id = 1
+        flavor.name = 'oooq_compute'
+
+        # Mock result of <flavor instance>.get_keys()
+        flavor_keys = mock.MagicMock()
+        flavor_keys.get.side_effect = ('compute', )
+
+        # Connecting the mock instances...
+        flavor.get_keys.side_effect = (flavor_keys, )
+        compute_client.flavors.find.side_effect = (flavor, )
+
+        # Calling `get_profile_of_flavor` with a 'oooq_compute' flavor
+        # should return profile 'compute'.
+        profile = parameters.get_profile_of_flavor('oooq_compute',
+                                                   compute_client)
+        self.assertEqual(profile, 'compute')
+
+    def test_profile_flavor_not_found_exception(self):
+        compute_client = mock.MagicMock()
+        flavor = (Exception, )
+        compute_client.flavors.find.side_effect = flavor
+
+        # Calling `get_profile_of_flavor` with a 'oooq_compute' flavor
+        # should raises DeriveParamsError exception
+        self.assertRaises(exception.DeriveParamsError,
+                          parameters.get_profile_of_flavor,
+                          'oooq_compute', compute_client)
+
+    def test_profile_flavor_not_found(self):
+        compute_client = mock.MagicMock()
+        compute_client.flavors.find.return_value = None
+
+        # Calling `get_profile_of_flavor` with a 'oooq_compute' flavor
+        # should raises DeriveParamsError exception
+        self.assertRaises(exception.DeriveParamsError,
+                          parameters.get_profile_of_flavor,
+                          'oooq_compute', compute_client)
+
+    def test_profile_not_found_flavor_found(self):
+        compute_client = mock.MagicMock()
+
+        # Mock for a compute_client.flavors.find result item
+        flavor = mock.MagicMock()
+        flavor.id = 1
+        flavor.name = 'oooq_compute'
+
+        # Mock result of <flavor instance>.get_keys()
+        flavor_keys = mock.MagicMock()
+        flavor_keys.get.side_effect = (exception.DeriveParamsError, )
+
+        # Connecting the mock instances...
+        flavor.get_keys.side_effect = (flavor_keys, )
+        compute_client.flavors.find.side_effect = (flavor, )
+
+        # Calling `get_profile_of_flavor` with a 'no_profile' flavor
+        # should raises DeriveParamsError exception
+        self.assertRaises(exception.DeriveParamsError,
+                          parameters.get_profile_of_flavor,
+                          'no_profile', compute_client)