Add unit tests for imported products

Added unit tests for the imported_* products: both the create_imported_* and import_* workflows are now tested, and the fixtures have been updated so these kinds of products can now also be used in other tests.

Test coverage up from ~80% to 92%

test/workflows/iptrunk/test_create_imported_iptrunk.py

@@ -11,9 +11,9 @@ from test.workflows import (
 )
 
 
-@pytest.mark.workflow()
-def test_create_imported_iptrunk_success(faker, nokia_router_subscription_factory):
-    input_data = {
+@pytest.fixture()
+def workflow_input_data(faker, nokia_router_subscription_factory):
+    return {
         "partner": "GEANT",
         "geant_s_sid": faker.geant_sid(),
         "iptrunk_description": faker.sentence(),
@@ -36,7 +36,11 @@ def test_create_imported_iptrunk_success(faker, nokia_router_subscription_factor
         "iptrunk_ipv4_network": faker.ipv4_network(max_subnet=31),
         "iptrunk_ipv6_network": faker.ipv6_network(max_subnet=126),
     }
-    result, _, _ = run_workflow("create_imported_iptrunk", [input_data])
+
+
+@pytest.mark.workflow()
+def test_create_imported_iptrunk_success(workflow_input_data):
+    result, _, _ = run_workflow("create_imported_iptrunk", [workflow_input_data])
     state = extract_state(result)
     imported_router = ImportedIptrunk.from_subscription(state["subscription_id"])