View Test Case _assigns is locked on first reference to _view

Example:

_view.stubs(:current_user).returns(@user)
@foo = 'bar'
render :template => "some/template.html.erb"

In this case, the @foo variable is expected to be available to the view, but it is not because _assigns gets passed in to the view when you reference _view.

I'll work up a patch for this in the next day or so.