FormFeature initialized with an IFormCollection instance throws NullReferenceException in Form property getter

[johatuni]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

When the FormFeature type is constructed with an IFormCollection instance, the internal field _request is initialized to "default!" (null) in the ctor. When later accessing the Form property, a NullReferenceException is thrown from inside the private ResolveHasInvalidAntiforgeryValidationFeature() method, since it does not have a null guard for the _request field.

Expected Behavior

The Form property should in this case return the IFormCollection used when constructing the instance of the FormFeature.

Steps To Reproduce

No response

Exceptions (if any)

NullReferenceException

.NET Version

8

Anything else?

No response

[captainsafia]

@johatuni Thanks for opening this issue! Would you be interested in opening a PR to resolve this issue? Should be a matter of adding an null check to ResolveHasInvalidAntiforgeryValidationFeature.

[iam-black]

Are there any workarounds for this issue?

[johatuni]

Are there any workarounds for this issue?

I changed my logic so that my controller unit tests could operate on an IFormCollection instance instead of a mock of the Request.Form property.