Input Resolver Code Gen issue with type alias

[mohammadcazi]

Looks like this pr caused an issue in code gen: #1404

The generated code expects a resolver for inputs now but it fails to implement the resolver. Also, the model that was already matching using @GoModel directive is no longer matching:

type Bar struct {
   a, b string
}

type FooType []Bar
type Baz struct {
    Foo FooType
}


input SomeInput @goModel(model: "Baz") {
   foo: [Bar!]! # this used to get mapped to the go struct, but now it doesn't. 
}

input Bar @goModel(model: "Bar") {
   a: String!
   b: String!
}

[frederikhors]

Please create a Github repository to reproduce the issue.

[mojtabacazi]

@frederikhors here is a sample repository for the issue.

https://github.com/mojtabacazi/gql-issue-type-alias

Generated code with 0.14 works fine but not 0.15 nor 0.16. Here is the error from the project:

./main.go:13:23: cannot use &rsv (type *resolvers.Resolver) as type generated.ResolverRoot in field value:
        *resolvers.Resolver does not implement generated.ResolverRoot (missing SampleInput method)

[mojtabacazi]

@frederikhors Any updates?

[StevenACoffman]

I believe this is resolved with #1950