git.sr.ht/~sircmpwn/gqlgen@v0.0.0-20200522192042-c84d29a1c940/codegen/testserver/typefallback_test.go (about)

     1  package testserver
     2  
     3  import (
     4  	"context"
     5  	"testing"
     6  
     7  	"git.sr.ht/~sircmpwn/gqlgen/client"
     8  	"git.sr.ht/~sircmpwn/gqlgen/graphql/handler"
     9  	"github.com/stretchr/testify/require"
    10  )
    11  
    12  func TestTypeFallback(t *testing.T) {
    13  	resolvers := &Stub{}
    14  
    15  	c := client.New(handler.NewDefaultServer(NewExecutableSchema(Config{Resolvers: resolvers})))
    16  
    17  	resolvers.QueryResolver.Fallback = func(ctx context.Context, arg FallbackToStringEncoding) (FallbackToStringEncoding, error) {
    18  		return arg, nil
    19  	}
    20  
    21  	t.Run("fallback to string passthrough", func(t *testing.T) {
    22  		var resp struct {
    23  			Fallback string
    24  		}
    25  		c.MustPost(`query { fallback(arg: A) }`, &resp)
    26  		require.Equal(t, "A", resp.Fallback)
    27  	})
    28  }