github.com/99designs/gqlgen@v0.17.45/codegen/testserver/singlefile/typefallback_test.go (about)

     1  package singlefile
     2  
     3  import (
     4  	"context"
     5  	"testing"
     6  
     7  	"github.com/stretchr/testify/require"
     8  
     9  	"github.com/99designs/gqlgen/client"
    10  	"github.com/99designs/gqlgen/graphql/handler"
    11  )
    12  
    13  func TestTypeFallback(t *testing.T) {
    14  	resolvers := &Stub{}
    15  
    16  	c := client.New(handler.NewDefaultServer(NewExecutableSchema(Config{Resolvers: resolvers})))
    17  
    18  	resolvers.QueryResolver.Fallback = func(ctx context.Context, arg FallbackToStringEncoding) (FallbackToStringEncoding, error) {
    19  		return arg, nil
    20  	}
    21  
    22  	t.Run("fallback to string passthrough", func(t *testing.T) {
    23  		var resp struct {
    24  			Fallback string
    25  		}
    26  		c.MustPost(`query { fallback(arg: A) }`, &resp)
    27  		require.Equal(t, "A", resp.Fallback)
    28  	})
    29  }