func TestTypeSystem_EnumTypesMustBeWellDefined_RejectsAnEnumTypeWithoutValues(t *testing.T) { _, err := schemaWithFieldType(graphql.NewEnum(graphql.EnumConfig{ Name: "SomeEnum", })) expectedError := `SomeEnum values must be an object with value names as keys.` if err == nil || err.Error() != expectedError { t.Fatalf("Expected error: %v, got %v", expectedError, err) } }
func TestTypeSystem_EnumTypesMustBeWellDefined_AcceptsAWellDefinedEnumTypeWithEmptyValueDefinition(t *testing.T) { _, err := schemaWithFieldType(graphql.NewEnum(graphql.EnumConfig{ Name: "SomeEnum", Values: graphql.EnumValueConfigMap{ "FOO": &graphql.EnumValueConfig{}, "BAR": &graphql.EnumValueConfig{}, }, })) if err != nil { t.Fatalf("unexpected error: %v", err) } }
func TestIntrospection_RespectsTheIncludeDeprecatedParameterForEnumValues(t *testing.T) { testEnum := graphql.NewEnum(graphql.EnumConfig{ Name: "TestEnum", Values: graphql.EnumValueConfigMap{ "NONDEPRECATED": &graphql.EnumValueConfig{ Value: 0, }, "DEPRECATED": &graphql.EnumValueConfig{ Value: 1, DeprecationReason: "Removed in 1.0", }, "ALSONONDEPRECATED": &graphql.EnumValueConfig{ Value: 2, }, }, }) testType := graphql.NewObject(graphql.ObjectConfig{ Name: "TestType", Fields: graphql.Fields{ "testEnum": &graphql.Field{ Type: testEnum, }, }, }) schema, err := graphql.NewSchema(graphql.SchemaConfig{ Query: testType, }) if err != nil { t.Fatalf("Error creating Schema: %v", err.Error()) } query := ` { __type(name: "TestEnum") { name trueValues: enumValues(includeDeprecated: true) { name } falseValues: enumValues(includeDeprecated: false) { name } omittedValues: enumValues { name } } } ` expected := &graphql.Result{ Data: map[string]interface{}{ "__type": map[string]interface{}{ "name": "TestEnum", "trueValues": []interface{}{ map[string]interface{}{ "name": "NONDEPRECATED", }, map[string]interface{}{ "name": "DEPRECATED", }, map[string]interface{}{ "name": "ALSONONDEPRECATED", }, }, "falseValues": []interface{}{ map[string]interface{}{ "name": "NONDEPRECATED", }, map[string]interface{}{ "name": "ALSONONDEPRECATED", }, }, "omittedValues": []interface{}{ map[string]interface{}{ "name": "NONDEPRECATED", }, map[string]interface{}{ "name": "ALSONONDEPRECATED", }, }, }, }, } result := g(t, graphql.Params{ Schema: schema, RequestString: query, }) if !testutil.ContainSubset(result.Data.(map[string]interface{}), expected.Data.(map[string]interface{})) { t.Fatalf("Unexpected result, Diff: %v", testutil.Diff(expected, result)) } }
}, }) var someInterfaceType = graphql.NewInterface(graphql.InterfaceConfig{ Name: "SomeInterface", ResolveType: func(value interface{}, info graphql.ResolveInfo) *graphql.Object { return nil }, Fields: graphql.FieldConfigMap{ "f": &graphql.FieldConfig{ Type: graphql.String, }, }, }) var someEnumType = graphql.NewEnum(graphql.EnumConfig{ Name: "SomeEnum", Values: graphql.EnumValueConfigMap{ "ONLY": &graphql.EnumValueConfig{}, }, }) var someInputObject = graphql.NewInputObject(graphql.InputObjectConfig{ Name: "SomeInputObject", Fields: graphql.InputObjectConfigFieldMap{ "f": &graphql.InputObjectFieldConfig{ Type: graphql.String, DefaultValue: "Hello", }, }, }) func withModifiers(ttypes []graphql.Type) []graphql.Type { res := ttypes for _, ttype := range ttypes {
func init() { Luke = StarWarsChar{ ID: "1000", Name: "Luke Skywalker", AppearsIn: []int{4, 5, 6}, HomePlanet: "Tatooine", } Vader = StarWarsChar{ ID: "1001", Name: "Darth Vader", AppearsIn: []int{4, 5, 6}, HomePlanet: "Tatooine", } Han = StarWarsChar{ ID: "1002", Name: "Han Solo", AppearsIn: []int{4, 5, 6}, } Leia = StarWarsChar{ ID: "1003", Name: "Leia Organa", AppearsIn: []int{4, 5, 6}, HomePlanet: "Alderaa", } Tarkin = StarWarsChar{ ID: "1004", Name: "Wilhuff Tarkin", AppearsIn: []int{4}, } Threepio = StarWarsChar{ ID: "2000", Name: "C-3PO", AppearsIn: []int{4, 5, 6}, PrimaryFunction: "Protocol", } Artoo = StarWarsChar{ ID: "2001", Name: "R2-D2", AppearsIn: []int{4, 5, 6}, PrimaryFunction: "Astromech", } Luke.Friends = append(Luke.Friends, []StarWarsChar{Han, Leia, Threepio, Artoo}...) Vader.Friends = append(Luke.Friends, []StarWarsChar{Tarkin}...) Han.Friends = append(Han.Friends, []StarWarsChar{Luke, Leia, Artoo}...) Leia.Friends = append(Leia.Friends, []StarWarsChar{Luke, Han, Threepio, Artoo}...) Tarkin.Friends = append(Tarkin.Friends, []StarWarsChar{Vader}...) Threepio.Friends = append(Threepio.Friends, []StarWarsChar{Luke, Han, Leia, Artoo}...) Artoo.Friends = append(Artoo.Friends, []StarWarsChar{Luke, Han, Leia}...) HumanData = map[int]StarWarsChar{ 1000: Luke, 1001: Vader, 1002: Han, 1003: Leia, 1004: Tarkin, } DroidData = map[int]StarWarsChar{ 2000: Threepio, 2001: Artoo, } episodeEnum := graphql.NewEnum(graphql.EnumConfig{ Name: "Episode", Description: "One of the films in the Star Wars Trilogy", Values: graphql.EnumValueConfigMap{ "NEWHOPE": &graphql.EnumValueConfig{ Value: 4, Description: "Released in 1977.", }, "EMPIRE": &graphql.EnumValueConfig{ Value: 5, Description: "Released in 1980.", }, "JEDI": &graphql.EnumValueConfig{ Value: 6, Description: "Released in 1983.", }, }, }) characterInterface := graphql.NewInterface(graphql.InterfaceConfig{ Name: "Character", Description: "A character in the Star Wars Trilogy", Fields: graphql.Fields{ "id": &graphql.Field{ Type: graphql.NewNonNull(graphql.String), Description: "The id of the character.", }, "name": &graphql.Field{ Type: graphql.String, Description: "The name of the character.", }, "appearsIn": &graphql.Field{ Type: graphql.NewList(episodeEnum), Description: "Which movies they appear in.", }, }, ResolveType: func(p graphql.ResolveTypeParams) *graphql.Object { if character, ok := p.Value.(StarWarsChar); ok { id, _ := strconv.Atoi(character.ID) human := GetHuman(id) if human.ID != "" { return humanType } } return droidType }, }) characterInterface.AddFieldConfig("friends", &graphql.Field{ Type: graphql.NewList(characterInterface), Description: "The friends of the character, or an empty list if they have none.", }) humanType = graphql.NewObject(graphql.ObjectConfig{ Name: "Human", Description: "A humanoid creature in the Star Wars universe.", Fields: graphql.Fields{ "id": &graphql.Field{ Type: graphql.NewNonNull(graphql.String), Description: "The id of the human.", Resolve: func(p graphql.ResolveParams) (interface{}, error) { if human, ok := p.Source.(StarWarsChar); ok { return human.ID, nil } return nil, nil }, }, "name": &graphql.Field{ Type: graphql.String, Description: "The name of the human.", Resolve: func(p graphql.ResolveParams) (interface{}, error) { if human, ok := p.Source.(StarWarsChar); ok { return human.Name, nil } return nil, nil }, }, "friends": &graphql.Field{ Type: graphql.NewList(characterInterface), Description: "The friends of the human, or an empty list if they have none.", Resolve: func(p graphql.ResolveParams) (interface{}, error) { if human, ok := p.Source.(StarWarsChar); ok { return human.Friends, nil } return []interface{}{}, nil }, }, "appearsIn": &graphql.Field{ Type: graphql.NewList(episodeEnum), Description: "Which movies they appear in.", Resolve: func(p graphql.ResolveParams) (interface{}, error) { if human, ok := p.Source.(StarWarsChar); ok { return human.AppearsIn, nil } return nil, nil }, }, "homePlanet": &graphql.Field{ Type: graphql.String, Description: "The home planet of the human, or null if unknown.", Resolve: func(p graphql.ResolveParams) (interface{}, error) { if human, ok := p.Source.(StarWarsChar); ok { return human.HomePlanet, nil } return nil, nil }, }, }, Interfaces: []*graphql.Interface{ characterInterface, }, }) droidType = graphql.NewObject(graphql.ObjectConfig{ Name: "Droid", Description: "A mechanical creature in the Star Wars universe.", Fields: graphql.Fields{ "id": &graphql.Field{ Type: graphql.NewNonNull(graphql.String), Description: "The id of the droid.", Resolve: func(p graphql.ResolveParams) (interface{}, error) { if droid, ok := p.Source.(StarWarsChar); ok { return droid.ID, nil } return nil, nil }, }, "name": &graphql.Field{ Type: graphql.String, Description: "The name of the droid.", Resolve: func(p graphql.ResolveParams) (interface{}, error) { if droid, ok := p.Source.(StarWarsChar); ok { return droid.Name, nil } return nil, nil }, }, "friends": &graphql.Field{ Type: graphql.NewList(characterInterface), Description: "The friends of the droid, or an empty list if they have none.", Resolve: func(p graphql.ResolveParams) (interface{}, error) { if droid, ok := p.Source.(StarWarsChar); ok { friends := []map[string]interface{}{} for _, friend := range droid.Friends { friends = append(friends, map[string]interface{}{ "name": friend.Name, "id": friend.ID, }) } return droid.Friends, nil } return []interface{}{}, nil }, }, "appearsIn": &graphql.Field{ Type: graphql.NewList(episodeEnum), Description: "Which movies they appear in.", Resolve: func(p graphql.ResolveParams) (interface{}, error) { if droid, ok := p.Source.(StarWarsChar); ok { return droid.AppearsIn, nil } return nil, nil }, }, "primaryFunction": &graphql.Field{ Type: graphql.String, Description: "The primary function of the droid.", Resolve: func(p graphql.ResolveParams) (interface{}, error) { if droid, ok := p.Source.(StarWarsChar); ok { return droid.PrimaryFunction, nil } return nil, nil }, }, }, Interfaces: []*graphql.Interface{ characterInterface, }, }) queryType := graphql.NewObject(graphql.ObjectConfig{ Name: "Query", Fields: graphql.Fields{ "hero": &graphql.Field{ Type: characterInterface, Args: graphql.FieldConfigArgument{ "episode": &graphql.ArgumentConfig{ Description: "If omitted, returns the hero of the whole saga. If " + "provided, returns the hero of that particular episode.", Type: episodeEnum, }, }, Resolve: func(p graphql.ResolveParams) (interface{}, error) { return GetHero(p.Args["episode"]), nil }, }, "human": &graphql.Field{ Type: humanType, Args: graphql.FieldConfigArgument{ "id": &graphql.ArgumentConfig{ Description: "id of the human", Type: graphql.NewNonNull(graphql.String), }, }, Resolve: func(p graphql.ResolveParams) (interface{}, error) { return GetHuman(p.Args["id"].(int)), nil }, }, "droid": &graphql.Field{ Type: droidType, Args: graphql.FieldConfigArgument{ "id": &graphql.ArgumentConfig{ Description: "id of the droid", Type: graphql.NewNonNull(graphql.String), }, }, Resolve: func(p graphql.ResolveParams) (interface{}, error) { return GetDroid(p.Args["id"].(int)), nil }, }, }, }) StarWarsSchema, _ = graphql.NewSchema(graphql.SchemaConfig{ Query: queryType, }) }
import ( "reflect" "testing" "github.com/graphql-go/graphql" "github.com/graphql-go/graphql/gqlerrors" "github.com/graphql-go/graphql/testutil" ) var enumTypeTestColorType = graphql.NewEnum(graphql.EnumConfig{ Name: "Color", Values: graphql.EnumValueConfigMap{ "RED": &graphql.EnumValueConfig{ Value: 0, }, "GREEN": &graphql.EnumValueConfig{ Value: 1, }, "BLUE": &graphql.EnumValueConfig{ Value: 2, }, }, }) var enumTypeTestQueryType = graphql.NewObject(graphql.ObjectConfig{ Name: "Query", Fields: graphql.Fields{ "colorEnum": &graphql.Field{ Type: enumTypeTestColorType, Args: graphql.FieldConfigArgument{ "fromEnum": &graphql.ArgumentConfig{ Type: enumTypeTestColorType, },
IsTypeOf: func(p graphql.IsTypeOfParams) bool { return true }, }) var interfaceType = graphql.NewInterface(graphql.InterfaceConfig{ Name: "Interface", }) var unionType = graphql.NewUnion(graphql.UnionConfig{ Name: "Union", Types: []*graphql.Object{ objectType, }, }) var enumType = graphql.NewEnum(graphql.EnumConfig{ Name: "Enum", Values: graphql.EnumValueConfigMap{ "foo": &graphql.EnumValueConfig{}, }, }) var inputObjectType = graphql.NewInputObject(graphql.InputObjectConfig{ Name: "InputObject", }) func init() { blogAuthor.AddFieldConfig("recentArticle", &graphql.Field{ Type: blogArticle, }) } func TestTypeSystem_DefinitionExample_DefinesAQueryOnlySchema(t *testing.T) { blogSchema, err := graphql.NewSchema(graphql.SchemaConfig{ Query: blogQuery,
func init() { var beingInterface = graphql.NewInterface(graphql.InterfaceConfig{ Name: "Being", Fields: graphql.Fields{ "name": &graphql.Field{ Type: graphql.String, Args: graphql.FieldConfigArgument{ "surname": &graphql.ArgumentConfig{ Type: graphql.Boolean, }, }, }, }, }) var petInterface = graphql.NewInterface(graphql.InterfaceConfig{ Name: "Pet", Fields: graphql.Fields{ "name": &graphql.Field{ Type: graphql.String, Args: graphql.FieldConfigArgument{ "surname": &graphql.ArgumentConfig{ Type: graphql.Boolean, }, }, }, }, }) var dogCommandEnum = graphql.NewEnum(graphql.EnumConfig{ Name: "DogCommand", Values: graphql.EnumValueConfigMap{ "SIT": &graphql.EnumValueConfig{ Value: 0, }, "HEEL": &graphql.EnumValueConfig{ Value: 1, }, "DOWN": &graphql.EnumValueConfig{ Value: 2, }, }, }) var dogType = graphql.NewObject(graphql.ObjectConfig{ Name: "Dog", IsTypeOf: func(value interface{}, info graphql.ResolveInfo) bool { return true }, Fields: graphql.Fields{ "name": &graphql.Field{ Type: graphql.String, Args: graphql.FieldConfigArgument{ "surname": &graphql.ArgumentConfig{ Type: graphql.Boolean, }, }, }, "nickname": &graphql.Field{ Type: graphql.String, }, "barkVolume": &graphql.Field{ Type: graphql.Int, }, "barks": &graphql.Field{ Type: graphql.Boolean, }, "doesKnowCommand": &graphql.Field{ Type: graphql.Boolean, Args: graphql.FieldConfigArgument{ "dogCommand": &graphql.ArgumentConfig{ Type: dogCommandEnum, }, }, }, "isHousetrained": &graphql.Field{ Type: graphql.Boolean, Args: graphql.FieldConfigArgument{ "atOtherHomes": &graphql.ArgumentConfig{ Type: graphql.Boolean, DefaultValue: true, }, }, }, "isAtLocation": &graphql.Field{ Type: graphql.Boolean, Args: graphql.FieldConfigArgument{ "x": &graphql.ArgumentConfig{ Type: graphql.Int, }, "y": &graphql.ArgumentConfig{ Type: graphql.Int, }, }, }, }, Interfaces: []*graphql.Interface{ beingInterface, petInterface, }, }) var furColorEnum = graphql.NewEnum(graphql.EnumConfig{ Name: "FurColor", Values: graphql.EnumValueConfigMap{ "BROWN": &graphql.EnumValueConfig{ Value: 0, }, "BLACK": &graphql.EnumValueConfig{ Value: 1, }, "TAN": &graphql.EnumValueConfig{ Value: 2, }, "SPOTTED": &graphql.EnumValueConfig{ Value: 3, }, }, }) var catType = graphql.NewObject(graphql.ObjectConfig{ Name: "Cat", IsTypeOf: func(value interface{}, info graphql.ResolveInfo) bool { return true }, Fields: graphql.Fields{ "name": &graphql.Field{ Type: graphql.String, Args: graphql.FieldConfigArgument{ "surname": &graphql.ArgumentConfig{ Type: graphql.Boolean, }, }, }, "nickname": &graphql.Field{ Type: graphql.String, }, "meowVolume": &graphql.Field{ Type: graphql.Int, }, "meows": &graphql.Field{ Type: graphql.Boolean, }, "furColor": &graphql.Field{ Type: furColorEnum, }, }, Interfaces: []*graphql.Interface{ beingInterface, petInterface, }, }) var catOrDogUnion = graphql.NewUnion(graphql.UnionConfig{ Name: "CatOrDog", Types: []*graphql.Object{ dogType, catType, }, ResolveType: func(value interface{}, info graphql.ResolveInfo) *graphql.Object { // not used for validation return nil }, }) var intelligentInterface = graphql.NewInterface(graphql.InterfaceConfig{ Name: "Intelligent", Fields: graphql.Fields{ "iq": &graphql.Field{ Type: graphql.Int, }, }, }) var humanType = graphql.NewObject(graphql.ObjectConfig{ Name: "Human", IsTypeOf: func(value interface{}, info graphql.ResolveInfo) bool { return true }, Interfaces: []*graphql.Interface{ beingInterface, intelligentInterface, }, Fields: graphql.Fields{ "name": &graphql.Field{ Type: graphql.String, Args: graphql.FieldConfigArgument{ "surname": &graphql.ArgumentConfig{ Type: graphql.Boolean, }, }, }, "pets": &graphql.Field{ Type: graphql.NewList(petInterface), }, "iq": &graphql.Field{ Type: graphql.Int, }, }, }) humanType.AddFieldConfig("relatives", &graphql.Field{ Type: graphql.NewList(humanType), }) var alienType = graphql.NewObject(graphql.ObjectConfig{ Name: "Alien", IsTypeOf: func(value interface{}, info graphql.ResolveInfo) bool { return true }, Interfaces: []*graphql.Interface{ beingInterface, intelligentInterface, }, Fields: graphql.Fields{ "name": &graphql.Field{ Type: graphql.String, Args: graphql.FieldConfigArgument{ "surname": &graphql.ArgumentConfig{ Type: graphql.Boolean, }, }, }, "iq": &graphql.Field{ Type: graphql.Int, }, "numEyes": &graphql.Field{ Type: graphql.Int, }, }, }) var dogOrHumanUnion = graphql.NewUnion(graphql.UnionConfig{ Name: "DogOrHuman", Types: []*graphql.Object{ dogType, humanType, }, ResolveType: func(value interface{}, info graphql.ResolveInfo) *graphql.Object { // not used for validation return nil }, }) var humanOrAlienUnion = graphql.NewUnion(graphql.UnionConfig{ Name: "HumanOrAlien", Types: []*graphql.Object{ alienType, humanType, }, ResolveType: func(value interface{}, info graphql.ResolveInfo) *graphql.Object { // not used for validation return nil }, }) var complexInputObject = graphql.NewInputObject(graphql.InputObjectConfig{ Name: "ComplexInput", Fields: graphql.InputObjectConfigFieldMap{ "requiredField": &graphql.InputObjectFieldConfig{ Type: graphql.NewNonNull(graphql.Boolean), }, "intField": &graphql.InputObjectFieldConfig{ Type: graphql.Int, }, "stringField": &graphql.InputObjectFieldConfig{ Type: graphql.String, }, "booleanField": &graphql.InputObjectFieldConfig{ Type: graphql.Boolean, }, "stringListField": &graphql.InputObjectFieldConfig{ Type: graphql.NewList(graphql.String), }, }, }) var complicatedArgs = graphql.NewObject(graphql.ObjectConfig{ Name: "ComplicatedArgs", // TODO List // TODO Coercion // TODO NotNulls Fields: graphql.Fields{ "intArgField": &graphql.Field{ Type: graphql.String, Args: graphql.FieldConfigArgument{ "intArg": &graphql.ArgumentConfig{ Type: graphql.Int, }, }, }, "nonNullIntArgField": &graphql.Field{ Type: graphql.String, Args: graphql.FieldConfigArgument{ "nonNullIntArg": &graphql.ArgumentConfig{ Type: graphql.NewNonNull(graphql.Int), }, }, }, "stringArgField": &graphql.Field{ Type: graphql.String, Args: graphql.FieldConfigArgument{ "stringArg": &graphql.ArgumentConfig{ Type: graphql.String, }, }, }, "booleanArgField": &graphql.Field{ Type: graphql.String, Args: graphql.FieldConfigArgument{ "booleanArg": &graphql.ArgumentConfig{ Type: graphql.Boolean, }, }, }, "enumArgField": &graphql.Field{ Type: graphql.String, Args: graphql.FieldConfigArgument{ "enumArg": &graphql.ArgumentConfig{ Type: furColorEnum, }, }, }, "floatArgField": &graphql.Field{ Type: graphql.String, Args: graphql.FieldConfigArgument{ "floatArg": &graphql.ArgumentConfig{ Type: graphql.Float, }, }, }, "idArgField": &graphql.Field{ Type: graphql.String, Args: graphql.FieldConfigArgument{ "idArg": &graphql.ArgumentConfig{ Type: graphql.ID, }, }, }, "stringListArgField": &graphql.Field{ Type: graphql.String, Args: graphql.FieldConfigArgument{ "stringListArg": &graphql.ArgumentConfig{ Type: graphql.NewList(graphql.String), }, }, }, "complexArgField": &graphql.Field{ Type: graphql.String, Args: graphql.FieldConfigArgument{ "complexArg": &graphql.ArgumentConfig{ Type: complexInputObject, }, }, }, "multipleReqs": &graphql.Field{ Type: graphql.String, Args: graphql.FieldConfigArgument{ "req1": &graphql.ArgumentConfig{ Type: graphql.NewNonNull(graphql.Int), }, "req2": &graphql.ArgumentConfig{ Type: graphql.NewNonNull(graphql.Int), }, }, }, "multipleOpts": &graphql.Field{ Type: graphql.String, Args: graphql.FieldConfigArgument{ "opt1": &graphql.ArgumentConfig{ Type: graphql.Int, DefaultValue: 0, }, "opt2": &graphql.ArgumentConfig{ Type: graphql.Int, DefaultValue: 0, }, }, }, "multipleOptAndReq": &graphql.Field{ Type: graphql.String, Args: graphql.FieldConfigArgument{ "req1": &graphql.ArgumentConfig{ Type: graphql.NewNonNull(graphql.Int), }, "req2": &graphql.ArgumentConfig{ Type: graphql.NewNonNull(graphql.Int), }, "opt1": &graphql.ArgumentConfig{ Type: graphql.Int, DefaultValue: 0, }, "opt2": &graphql.ArgumentConfig{ Type: graphql.Int, DefaultValue: 0, }, }, }, }, }) queryRoot := graphql.NewObject(graphql.ObjectConfig{ Name: "QueryRoot", Fields: graphql.Fields{ "human": &graphql.Field{ Args: graphql.FieldConfigArgument{ "id": &graphql.ArgumentConfig{ Type: graphql.ID, }, }, Type: humanType, }, "alien": &graphql.Field{ Type: alienType, }, "dog": &graphql.Field{ Type: dogType, }, "cat": &graphql.Field{ Type: catType, }, "pet": &graphql.Field{ Type: petInterface, }, "catOrDog": &graphql.Field{ Type: catOrDogUnion, }, "dogOrHuman": &graphql.Field{ Type: dogOrHumanUnion, }, "humanOrAlien": &graphql.Field{ Type: humanOrAlienUnion, }, "complicatedArgs": &graphql.Field{ Type: complicatedArgs, }, }, }) schema, err := graphql.NewSchema(graphql.SchemaConfig{ Query: queryRoot, }) if err != nil { panic(err) } defaultRulesTestSchema = &schema }
package main import ( "fmt" "net/http" "github.com/graphql-go/graphql" "github.com/graphql-go/graphql-go-handler" ) var vehicleStateEnum = graphql.NewEnum(graphql.EnumConfig{ Name: "VehicleStatus", Values: graphql.EnumValueConfigMap{ "FREE": &graphql.EnumValueConfig{Value: "FREE", Description: "The vehicle is free for usage"}, "RESERVED": &graphql.EnumValueConfig{Value: "RESERVED", Description: "The vehicle is reserved"}, }, }) var vehicleType = graphql.NewObject(graphql.ObjectConfig{ Name: "Vehicle", Fields: graphql.Fields{ "id": &graphql.Field{Type: graphql.String, Description: "Vehicle id"}, "name": &graphql.Field{Type: graphql.String, Description: "Vehicle name"}, "state": &graphql.Field{Type: vehicleStateEnum, Description: "true=FREE, false=RESERVED"}, }, }) var queryType = graphql.NewObject(graphql.ObjectConfig{ Name: "Query", Fields: graphql.Fields{ "Vehicle": &graphql.Field{