Add functional reproducer for bug 2102038

Related-Bug: #2102038
Change-Id: Ia950fc16ac5bb890baaa826580e7cb05d64831df

nova/tests/functional/regressions/test_bug_2102038.py

@@ -0,0 +1,55 @@
+# 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.
+
+from nova.tests.fixtures import libvirt as fakelibvirt
+from nova.tests.functional.api import client
+from nova.tests.functional.libvirt import test_pci_in_placement as base
+
+
+class MultipleSpecPerAliasWithPCIInPlacementTest(
+    base.PlacementPCIReportingTests
+):
+
+    def test_alias_with_multiple_specs_not_supported(self):
+        self.flags(group='filter_scheduler', pci_in_placement=True)
+
+        pci_alias = [
+            {
+                "device_type": "type-VF",
+                "vendor_id": fakelibvirt.PCI_VEND_ID,
+                "product_id": "f000",
+                "name": "a-vf",
+            },
+            {
+                "device_type": "type-VF",
+                "vendor_id": fakelibvirt.PCI_VEND_ID,
+                "product_id": "f001",
+                "name": "a-vf",
+            }
+        ]
+        self.flags(
+            group="pci",
+            alias=self._to_list_of_json_str(pci_alias),
+        )
+        extra_spec = {"pci_passthrough:alias": "a-vf:1"}
+        flavor_id = self._create_flavor(extra_spec=extra_spec)
+
+        exc = self.assertRaises(
+            client.OpenStackApiException,
+            self._create_server,
+            flavor_id=flavor_id,
+            networks=[],
+        )
+        # This is bug 2102038 as nova does not handle the internal ValueError
+        # and therefore returns HTTP 500 instead of returning 400 Bad Request
+        # with a message pointing to the unsupported alias config.
+        self.assertEqual(500, exc.response.status_code)