- #7413 part 1 of 2
- made all `ModelMetadataProvider` and `ObjectModelValidator`-specific code conditional
- fortunately, `MvcOptions` easy to get; affected code is primarily `internal` or pub-`Internal`
- remove unnecessary `ModelMetadataProvider` use in `ApiBehaviorApplicationModelProvider`
- run integration and functional tests with `CompatibilityVersion.Version_2_1`
- functional test change depends on @javiercn's recent #7541 fix
- remove test code now redundantly turning compatibility switches on
nits:
- correct spelling errors in `CompatibilitySwitch`
- take VS suggestions, mostly in test code
- rename methods in `ControllerBinderDelegateProviderTest` to match current API
- slightly refactor in `ApiBehaviorApplicationModelProvider`
Some details of this pending discussion, but this is a new 2.1 change
and compatibility switch in the spirit of making pages handler selection
less error-prone.
In particular we don't want anyone to have to define HEAD to do the
trivial thing. This currently routes all 'safe' HTTP methods to the GET
handler and all other HTTP methods to the POST handler.
This is technically not the correct thing to do for OPTIONS and TRACE,
so we might still do something different.
The tests will change a little depending on exactly what we decide to
do, but this is the main idea of the change.