Fixes

graphql.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"reflect"
 	"time"
 
 	"github.com/graph-gophers/graphql-go/errors"
@@ -197,7 +196,7 @@ func (s *Schema) ValidateWithVariables(queryString string, variables map[string]
 // without a resolver. If the context get cancelled, no further resolvers will be called and a
 // the context error will be returned as soon as possible (not immediately).
 func (s *Schema) Exec(ctx context.Context, queryString string, operationName string, variables map[string]interface{}) *Response {
-	if s.res.Resolver == (reflect.Value{}) {
+	if !s.res.Resolver.IsValid() {
 		panic("schema created without resolver, can not exec")
 	}
 	return s.exec(ctx, queryString, operationName, variables, s.res)

internal/schema/schema_test.go

@@ -995,13 +995,13 @@ func TestInterfaceImplementsInterface(t *testing.T) {
 				if tt.validateError == nil {
 					t.Fatal(err)
 				}
-				if err := tt.validateError(err); err != nil {
-					t.Fatal(err)
+				if err2 := tt.validateError(err); err2 != nil {
+					t.Fatal(err2)
 				}
 			}
 			if tt.validateSchema != nil {
-				if err := tt.validateSchema(s); err != nil {
-					t.Fatal(err)
+				if err2 := tt.validateSchema(s); err2 != nil {
+					t.Fatal(err2)
 				}
 			}
 		})

relay/relay.go

@@ -24,7 +24,7 @@ func UnmarshalKind(id graphql.ID) string {
 	if err != nil {
 		return ""
 	}
-	i := strings.IndexByte(string(s),  ':')
+	i := strings.IndexByte(string(s), ':')
 	if i == -1 {
 		return ""
 	}