Resolve ruff B017 in test_signal_flow.py (#3342)

* raise specific exception

* fix project import in workflow service

src/dispatch/signal/flows.py

@@ -9,6 +9,7 @@
 from dispatch.case import service as case_service
 from dispatch.case.models import CaseCreate
 from dispatch.entity import service as entity_service
+from dispatch.exceptions import DispatchException
 from dispatch.plugin import service as plugin_service
 from dispatch.project.models import Project
 from dispatch.signal import service as signal_service
@@ -128,10 +129,10 @@ def create_signal_instance(
     )
 
     if not signal:
-        raise Exception("No signal definition defined.")
+        raise DispatchException("No signal definition defined.")
 
     if not signal.enabled:
-        raise Exception("Signal definition is not enabled.")
+        raise DispatchException("Signal definition is not enabled.")
 
     signal_instance_in = SignalInstanceCreate(
         raw=signal_instance_data, signal=signal, project=signal.project

src/dispatch/workflow/service.py

@@ -13,7 +13,7 @@
 from dispatch.participant import service as participant_service
 from dispatch.plugin import service as plugin_service
 from dispatch.project import service as project_service
-from dispatch.project.models.py import Project
+from dispatch.project.models import Project
 from dispatch.signal import service as signal_service
 from dispatch.workflow.enums import WorkflowInstanceStatus
 

tests/signal/test_signal_flow.py

@@ -1,5 +1,7 @@
 import pytest
 
+from dispatch.exceptions import DispatchException
+
 
 def test_create_signal_instance(session, signal, case_severity, case_priority, user):
     from dispatch.signal.flows import create_signal_instance
@@ -30,7 +32,7 @@ def test_create_signal_instance_no_variant(session, signal, case_severity, case_
     case_severity.project_id = signal.project_id
 
     instance_data = {"variant": "unknown"}
-    with pytest.raises(Exception):
+    with pytest.raises(DispatchException):
         create_signal_instance(
             db_session=session,
             project=signal.project,
@@ -50,7 +52,7 @@ def test_create_signal_instance_not_enabled(session, signal, case_severity, case
 
     signal.enabled = False
     instance_data = {"variant": signal.variant}
-    with pytest.raises(Exception):
+    with pytest.raises(DispatchException):
         create_signal_instance(
             db_session=session,
             project=signal.project,