bUnit tests all pass locally but one test always fails in the pipeline - DevExpress

[friedice5467]

Hi, I have unit tests for a component utilizing dev express. All the tests pass locally, however one test is always flakey on the Azure DevOps pipeline.

Has anyone else run into this? I

Starting test execution, please wait...
A total of 1 test files matched the specified pattern.
[xUnit.net 00:00:05.96]     Unauthorized user should route to NotAuth component: PricePush component [FAIL]
  Failed Unauthorized user should route to NotAuth component: PricePush component [227 ms]
  Error Message:
   Bunit.JSRuntimeUnhandledInvocationException : bUnit's JSInterop has not been configured to handle the call:

    InvokeAsync<IJSObjectReference>("DxBlazor.DropDown.getReference", Microsoft.AspNetCore.Components.ElementReference)

Configure bUnit's JSInterop to handle the call with following:

    Setup<IJSObjectReference>("DxBlazor.DropDown.getReference", Microsoft.AspNetCore.Components.ElementReference)
or the following, to match any arguments:
    Setup<IJSObjectReference>("DxBlazor.DropDown.getReference", _ => true)

The setup methods are available on an instance of the BunitJSInterop or
BunitJSModuleInterop type. The standard BunitJSInterop is available
through the TestContext.JSInterop property, and a BunitJSModuleInterop
instance is returned from calling SetupModule on a BunitJSInterop instance.

The solution to this would be to setup JS interop to handle that error, but I don't know how to as

JSInterop.Setup<IJSObjectReference>("DxBlazor.DropDown.getReference", _ => true);

throws an error

Message: 
System.ArgumentException : Use one of the SetupModule() methods instead to set up an invocation handler that returns an IJSObjectReference.

Edit:
JSInterop.SetupModule("DxBlazor.DropDown.getReference", _ => true);

Works, but is this the best approach?

Thanks

[egil]

In short, I think your approach looks alright.

There is also the option to just set JSInterup mode to loose, e.g. JSInterop.Mode = JSRuntimeMode.Loose;

You can learn more here: https://bunit.dev/docs/test-doubles/emulating-ijsruntime.html