fix index generation

[vvakame]

https://play.golang.org/p/5R_inyGjapb

[vektah]

The func should probably capture this as an argument:

arr1 = append(arr1, func(idx1 int) graphql.Marshaler {
	// ...
	return arr2
}(idx1))

and a test would be nice, this is pretty easy to miss.

[vvakame]

Where do you write the test now?

[vektah]

If you can do it without changing the schema, use one of the examples.

Otherwise, dump it in https://github.com/99designs/gqlgen/blob/master/codegen/testserver/generated_test.go

[vvakame]

this function is an immediate evaluate, it is not a problem even with the original code .... I have just noticed.