Logic app Standard - Unit Testing exception when terminate with custom error code

[zherbers]

Severity

P3 - Medium (Minor functionality affected)

Describe the Bug with repro steps

Unit-testing SDK throws on workflows that Terminate with a custom (non-enum) error code

Summary

UnitTestExecutor.RunWorkflowAsync throws System.ArgumentException: Requested value '<code>' was not found. instead of returning a Failed TestWorkflowRun whenever the workflow run ends with a runError.code (or an action error code) that is not a member of the ErrorResponseCode enum.

Custom Terminate error codes are valid at runtime in Logic Apps Standard (the code field is a free-form string), so this makes it impossible to unit-test any error/Catch path that terminates with a domain-specific code.

Repro

1. Author a Stateful workflow with a Try/Catch pattern whose Catch terminates the run:

   "Terminate_-_Failed": {
     "type": "Terminate",
     "inputs": {
       "runStatus": "Failed",
       "runError": {
         "code": "@variables('ErrorCode')",
         "message": "@variables('ErrorMessage')"
       }
     }
   }
   

where ErrorCode resolves to a custom string, e.g. "PublisherDeliveryFailed_APICallFailed".

2. Mock the actions so the run reaches Terminate_-_Failed, then:

   var run = await executor.Create().RunWorkflowAsync(testMock: mockData);

What type of Logic App Is this happening in?

Standard (VSCode)

Are you experiencing a regression?

No response

Which operating system are you using?

Windows

Did you refer to the TSG before filing this issue? https://aka.ms/lauxtsg

Yes

Workflow JSON

Screenshots or Videos

No response

Environment

• Package: Microsoft.Azure.Workflows.WebJobs.Tests.Extension 1.0.3 (latest on NuGet)
• Target framework: net8.0
• Test framework: MSTest

Additional context

Requested value 'PublisherDeliveryFailed_APICallFailed' was not found.
   at Microsoft.Azure.Workflows.UnitTesting.TestHost.UnitTestEngine.ExecuteWorkflow(FlowPropertiesDefinition workflowDefinition, TriggerMock triggerMock, Dictionary`2 actionMocks, String appDirectory, String connections, String parameters, IDictionary`2 localSettings, String customCodeFunctionFilePath, Int32 timeoutInSeconds)
   at Microsoft.Azure.Workflows.UnitTesting.TestHost.UnitTestEngine.ExecuteWorkflow(FlowPropertiesDefinition workflowDefinition, TriggerMock triggerMock, Dictionary`2 actionMocks, String appDirectory, String connections, String parameters, IDictionary`2 localSettings, String customCodeFunctionFilePath, Int32 timeoutInSeconds)
   at Microsoft.Azure.Workflows.UnitTesting.UnitTestExecutor.RunWorkflowAsync(TestMockDefinition testMock, Int32 timeoutInSeconds)
   at Integration.Erp04.LogicApps.Tests.Failed_Run.RunAndCaptureAsync(String mockName) in C:\Repo\CHC.Integration.ERP\tests\erp04\Integration.Erp04.LogicApps\int22svc01p01-residentmovements-ecase-pub\Failed-Run\Failed-Run.cs:line 100