func TestTypeSystem_ObjectInterfacesMustBeArray_AcceptsAnObjectTypeWithInterfacesAsFunctionReturningAnArray(t *testing.T) {
anotherInterfaceType := graphql.NewInterface(graphql.InterfaceConfig{
Name: "AnotherInterface",
ResolveType: func(value interface{}, info graphql.ResolveInfo) *graphql.Object {
return nil
},
Fields: graphql.FieldConfigMap{
"f": &graphql.FieldConfig{
Type: graphql.String,
},
},
})
_, err := schemaWithFieldType(graphql.NewObject(graphql.ObjectConfig{
Name: "SomeObject",
Interfaces: []*graphql.Interface{anotherInterfaceType},
Fields: graphql.FieldConfigMap{
"f": &graphql.FieldConfig{
Type: graphql.String,
},
},
}))
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
}
func TestTypeSystem_InterfaceTypesMustBeResolvable_AcceptsAnInterfaceTypeDefiningResolveTypeWithImplementingTypeDefiningIsTypeOf(t *testing.T) {
anotherInterfaceType := graphql.NewInterface(graphql.InterfaceConfig{
Name: "AnotherInterface",
ResolveType: func(value interface{}, info graphql.ResolveInfo) *graphql.Object {
return nil
},
Fields: graphql.FieldConfigMap{
"f": &graphql.FieldConfig{
Type: graphql.String,
},
},
})
_, err := schemaWithFieldType(graphql.NewObject(graphql.ObjectConfig{
Name: "SomeObject",
Interfaces: []*graphql.Interface{anotherInterfaceType},
IsTypeOf: func(value interface{}, info graphql.ResolveInfo) bool {
return true
},
Fields: graphql.FieldConfigMap{
"f": &graphql.FieldConfig{
Type: graphql.String,
},
},
}))
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
}
func TestTypeSystem_ObjectsMustAdhereToInterfaceTheyImplement_AcceptsAnObjectWithAnEquivalentlyModifiedInterfaceField(t *testing.T) {
anotherInterface := graphql.NewInterface(graphql.InterfaceConfig{
Name: "AnotherInterface",
ResolveType: func(value interface{}, info graphql.ResolveInfo) *graphql.Object {
return nil
},
Fields: graphql.FieldConfigMap{
"field": &graphql.FieldConfig{
Type: graphql.NewNonNull(graphql.NewList(graphql.String)),
},
},
})
anotherObject := graphql.NewObject(graphql.ObjectConfig{
Name: "AnotherObject",
Interfaces: []*graphql.Interface{anotherInterface},
Fields: graphql.FieldConfigMap{
"field": &graphql.FieldConfig{
Type: graphql.NewNonNull(graphql.NewList(graphql.String)),
},
},
})
_, err := schemaWithObjectFieldOfType(anotherObject)
if err != nil {
t.Fatalf(`unexpected error: %v for type "%v"`, err, anotherObject)
}
}
func TestTypeSystem_ObjectsMustAdhereToInterfaceTheyImplement_RejectsAnObjectWithADifferentlyModifiedInterfaceFieldType(t *testing.T) {
anotherInterface := graphql.NewInterface(graphql.InterfaceConfig{
Name: "AnotherInterface",
ResolveType: func(value interface{}, info graphql.ResolveInfo) *graphql.Object {
return nil
},
Fields: graphql.FieldConfigMap{
"field": &graphql.FieldConfig{
Type: graphql.String,
},
},
})
anotherObject := graphql.NewObject(graphql.ObjectConfig{
Name: "AnotherObject",
Interfaces: []*graphql.Interface{anotherInterface},
Fields: graphql.FieldConfigMap{
"field": &graphql.FieldConfig{
Type: graphql.NewNonNull(graphql.String),
},
},
})
_, err := schemaWithObjectFieldOfType(anotherObject)
expectedError := `AnotherInterface.field expects type "String" but AnotherObject.field provides type "String!".`
if err == nil || err.Error() != expectedError {
t.Fatalf("Expected error: %v, got %v", expectedError, err)
}
}
func TestTypeSystem_ObjectsMustAdhereToInterfaceTheyImplement_RejectsAnObjectMissingAnInterfaceArgument(t *testing.T) {
anotherInterface := graphql.NewInterface(graphql.InterfaceConfig{
Name: "AnotherInterface",
ResolveType: func(value interface{}, info graphql.ResolveInfo) *graphql.Object {
return nil
},
Fields: graphql.FieldConfigMap{
"field": &graphql.FieldConfig{
Type: graphql.String,
Args: graphql.FieldConfigArgument{
"input": &graphql.ArgumentConfig{
Type: graphql.String,
},
},
},
},
})
anotherObject := graphql.NewObject(graphql.ObjectConfig{
Name: "AnotherObject",
Interfaces: []*graphql.Interface{anotherInterface},
Fields: graphql.FieldConfigMap{
"field": &graphql.FieldConfig{
Type: graphql.String,
},
},
})
_, err := schemaWithObjectFieldOfType(anotherObject)
expectedError := `AnotherInterface.field expects argument "input" but AnotherObject.field does not provide it.`
if err == nil || err.Error() != expectedError {
t.Fatalf("Expected error: %v, got %v", expectedError, err)
}
}
func TestTypeSystem_SchemaMustContainUniquelyNamedTypes_RejectsASchemaWhichHaveSameNamedObjectsImplementingAnInterface(t *testing.T) {
anotherInterface := graphql.NewInterface(graphql.InterfaceConfig{
Name: "AnotherInterface",
ResolveType: func(value interface{}, info graphql.ResolveInfo) *graphql.Object {
return nil
},
Fields: graphql.FieldConfigMap{
"f": &graphql.FieldConfig{
Type: graphql.String,
},
},
})
_ = graphql.NewObject(graphql.ObjectConfig{
Name: "BadObject",
Interfaces: []*graphql.Interface{
anotherInterface,
},
Fields: graphql.FieldConfigMap{
"f": &graphql.FieldConfig{
Type: graphql.String,
},
},
})
_ = graphql.NewObject(graphql.ObjectConfig{
Name: "BadObject",
Interfaces: []*graphql.Interface{
anotherInterface,
},
Fields: graphql.FieldConfigMap{
"f": &graphql.FieldConfig{
Type: graphql.String,
},
},
})
queryType := graphql.NewObject(graphql.ObjectConfig{
Name: "Query",
Fields: graphql.FieldConfigMap{
"iface": &graphql.FieldConfig{
Type: anotherInterface,
},
},
})
_, err := graphql.NewSchema(graphql.SchemaConfig{
Query: queryType,
})
expectedError := `Schema must contain unique named types but contains multiple types named "BadObject".`
if err == nil || err.Error() != expectedError {
t.Fatalf("Expected error: %v, got %v", expectedError, err)
}
}
func TestTypeSystem_ObjectsCanOnlyImplementInterfaces_AcceptsAnObjectImplementingAnInterface(t *testing.T) {
anotherInterfaceType := graphql.NewInterface(graphql.InterfaceConfig{
Name: "AnotherInterface",
ResolveType: func(value interface{}, info graphql.ResolveInfo) *graphql.Object {
return nil
},
Fields: graphql.FieldConfigMap{
"f": &graphql.FieldConfig{
Type: graphql.String,
},
},
})
_, err := schemaWithObjectImplementingType(anotherInterfaceType)
if err != nil {
t.Fatalf(`unexpected error: %v"`, err)
}
}
func TestTypeSystem_DefinitionExample_IncludesInterfacesThunkSubtypesInTheTypeMap(t *testing.T) {
someInterface := graphql.NewInterface(graphql.InterfaceConfig{
Name: "SomeInterface",
Fields: graphql.FieldConfigMap{
"f": &graphql.FieldConfig{
Type: graphql.Int,
},
},
})
someSubType := graphql.NewObject(graphql.ObjectConfig{
Name: "SomeSubtype",
Fields: graphql.FieldConfigMap{
"f": &graphql.FieldConfig{
Type: graphql.Int,
},
},
Interfaces: (graphql.InterfacesThunk)(func() []*graphql.Interface {
return []*graphql.Interface{someInterface}
}),
IsTypeOf: func(value interface{}, info graphql.ResolveInfo) bool {
return true
},
})
schema, err := graphql.NewSchema(graphql.SchemaConfig{
Query: graphql.NewObject(graphql.ObjectConfig{
Name: "Query",
Fields: graphql.FieldConfigMap{
"iface": &graphql.FieldConfig{
Type: someInterface,
},
},
}),
})
if err != nil {
t.Fatalf("unexpected error, got: %v", err)
}
if schema.GetType("SomeSubtype") != someSubType {
t.Fatalf(`schema.GetType("SomeSubtype") expected to equal someSubType, got: %v`, schema.GetType("SomeSubtype"))
}
}
func schemaWithInterfaceFieldOfType(ttype graphql.Type) (graphql.Schema, error) {
badInterfaceType := graphql.NewInterface(graphql.InterfaceConfig{
Name: "BadInterface",
Fields: graphql.FieldConfigMap{
"badField": &graphql.FieldConfig{
Type: ttype,
},
},
})
return graphql.NewSchema(graphql.SchemaConfig{
Query: graphql.NewObject(graphql.ObjectConfig{
Name: "Query",
Fields: graphql.FieldConfigMap{
"f": &graphql.FieldConfig{
Type: badInterfaceType,
},
},
}),
})
}
func TestTypeSystem_ObjectsMustAdhereToInterfaceTheyImplement_AcceptsAnObjectWhichImplementsAnInterfaceAlongWithMoreFields(t *testing.T) {
anotherInterface := graphql.NewInterface(graphql.InterfaceConfig{
Name: "AnotherInterface",
ResolveType: func(value interface{}, info graphql.ResolveInfo) *graphql.Object {
return nil
},
Fields: graphql.FieldConfigMap{
"field": &graphql.FieldConfig{
Type: graphql.String,
Args: graphql.FieldConfigArgument{
"input": &graphql.ArgumentConfig{
Type: graphql.String,
},
},
},
},
})
anotherObject := graphql.NewObject(graphql.ObjectConfig{
Name: "AnotherObject",
Interfaces: []*graphql.Interface{anotherInterface},
Fields: graphql.FieldConfigMap{
"field": &graphql.FieldConfig{
Type: graphql.String,
Args: graphql.FieldConfigArgument{
"input": &graphql.ArgumentConfig{
Type: graphql.String,
},
},
},
"anotherfield": &graphql.FieldConfig{
Type: graphql.String,
},
},
})
_, err := schemaWithObjectFieldOfType(anotherObject)
if err != nil {
t.Fatalf(`unexpected error: %v for type "%v"`, err, anotherObject)
}
}
func TestResolveTypeOnInterfaceYieldsUsefulError(t *testing.T) {
var dogType *graphql.Object
var catType *graphql.Object
var humanType *graphql.Object
petType := graphql.NewInterface(graphql.InterfaceConfig{
Name: "Pet",
Fields: graphql.FieldConfigMap{
"name": &graphql.FieldConfig{
Type: graphql.String,
},
},
ResolveType: func(value interface{}, info graphql.ResolveInfo) *graphql.Object {
if _, ok := value.(*testCat); ok {
return catType
}
if _, ok := value.(*testDog); ok {
return dogType
}
if _, ok := value.(*testHuman); ok {
return humanType
}
return nil
},
})
humanType = graphql.NewObject(graphql.ObjectConfig{
Name: "Human",
Fields: graphql.FieldConfigMap{
"name": &graphql.FieldConfig{
Type: graphql.String,
Resolve: func(p graphql.GQLFRParams) interface{} {
if human, ok := p.Source.(*testHuman); ok {
return human.Name
}
return nil
},
},
},
})
dogType = graphql.NewObject(graphql.ObjectConfig{
Name: "Dog",
Interfaces: []*graphql.Interface{
petType,
},
IsTypeOf: func(value interface{}, info graphql.ResolveInfo) bool {
_, ok := value.(*testDog)
return ok
},
Fields: graphql.FieldConfigMap{
"name": &graphql.FieldConfig{
Type: graphql.String,
Resolve: func(p graphql.GQLFRParams) interface{} {
if dog, ok := p.Source.(*testDog); ok {
return dog.Name
}
return nil
},
},
"woofs": &graphql.FieldConfig{
Type: graphql.Boolean,
Resolve: func(p graphql.GQLFRParams) interface{} {
if dog, ok := p.Source.(*testDog); ok {
return dog.Woofs
}
return nil
},
},
},
})
catType = graphql.NewObject(graphql.ObjectConfig{
Name: "Cat",
Interfaces: []*graphql.Interface{
petType,
},
IsTypeOf: func(value interface{}, info graphql.ResolveInfo) bool {
_, ok := value.(*testCat)
return ok
},
Fields: graphql.FieldConfigMap{
"name": &graphql.FieldConfig{
Type: graphql.String,
Resolve: func(p graphql.GQLFRParams) interface{} {
if cat, ok := p.Source.(*testCat); ok {
return cat.Name
}
return nil
},
},
"meows": &graphql.FieldConfig{
Type: graphql.Boolean,
Resolve: func(p graphql.GQLFRParams) interface{} {
if cat, ok := p.Source.(*testCat); ok {
return cat.Meows
}
return nil
},
},
},
})
schema, err := graphql.NewSchema(graphql.SchemaConfig{
Query: graphql.NewObject(graphql.ObjectConfig{
Name: "Query",
Fields: graphql.FieldConfigMap{
"pets": &graphql.FieldConfig{
Type: graphql.NewList(petType),
Resolve: func(p graphql.GQLFRParams) interface{} {
return []interface{}{
&testDog{"Odie", true},
&testCat{"Garfield", false},
&testHuman{"Jon"},
}
},
},
},
}),
})
if err != nil {
t.Fatalf("Error in schema %v", err.Error())
}
query := `{
pets {
name
... on Dog {
woofs
}
... on Cat {
meows
}
}
}`
expected := &graphql.Result{
Data: map[string]interface{}{
"pets": []interface{}{
map[string]interface{}{
"name": "Odie",
"woofs": bool(true),
},
map[string]interface{}{
"name": "Garfield",
"meows": bool(false),
},
nil,
},
},
Errors: []gqlerrors.FormattedError{
gqlerrors.FormattedError{
Message: `Runtime Object type "Human" is not a possible type for "Pet".`,
Locations: []location.SourceLocation{},
},
},
}
resultChannel := make(chan *graphql.Result)
go graphql.Graphql(graphql.Params{
Schema: schema,
RequestString: query,
}, resultChannel)
result := <-resultChannel
if len(result.Errors) == 0 {
t.Fatalf("wrong result, expected errors: %v, got: %v", len(expected.Errors), len(result.Errors))
}
if !reflect.DeepEqual(expected, result) {
t.Fatalf("Unexpected result, Diff: %v", testutil.Diff(expected, result))
}
}
})
var someUnionType = graphql.NewUnion(graphql.UnionConfig{
Name: "SomeUnion",
ResolveType: func(value interface{}, info graphql.ResolveInfo) *graphql.Object {
return nil
},
Types: []*graphql.Object{
someObjectType,
},
})
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{
func TestUnionIntersectionTypes_GetsExecutionInfoInResolver(t *testing.T) {
var encounteredSchema *graphql.Schema
var encounteredRootValue interface{}
var personType2 *graphql.Object
namedType2 := graphql.NewInterface(graphql.InterfaceConfig{
Name: "Named",
Fields: graphql.FieldConfigMap{
"name": &graphql.FieldConfig{
Type: graphql.String,
},
},
ResolveType: func(value interface{}, info graphql.ResolveInfo) *graphql.Object {
encounteredSchema = &info.Schema
encounteredRootValue = info.RootValue
return personType2
},
})
personType2 = graphql.NewObject(graphql.ObjectConfig{
Name: "Person",
Interfaces: []*graphql.Interface{
namedType2,
},
Fields: graphql.FieldConfigMap{
"name": &graphql.FieldConfig{
Type: graphql.String,
},
"friends": &graphql.FieldConfig{
Type: graphql.NewList(namedType2),
},
},
})
schema2, _ := graphql.NewSchema(graphql.SchemaConfig{
Query: personType2,
})
john2 := &testPerson{
Name: "John",
Friends: []testNamedType{
liz,
},
}
doc := `{ name, friends { name } }`
expected := &graphql.Result{
Data: map[string]interface{}{
"name": "John",
"friends": []interface{}{
map[string]interface{}{
"name": "Liz",
},
},
},
}
// parse query
ast := testutil.TestParse(t, doc)
// execute
ep := graphql.ExecuteParams{
Schema: schema2,
AST: ast,
Root: john2,
}
result := testutil.TestExecute(t, ep)
if len(result.Errors) != len(expected.Errors) {
t.Fatalf("Unexpected errors, Diff: %v", testutil.Diff(expected.Errors, result.Errors))
}
if !reflect.DeepEqual(expected, result) {
t.Fatalf("Unexpected result, Diff: %v", testutil.Diff(expected, result))
}
}
type testCat2 struct {
Name string `json:"name"`
Meows bool `json:"meows"`
}
type testPerson struct {
Name string `json:"name"`
Pets []testPet `json:"pets"`
Friends []testNamedType `json:"friends"`
}
var namedType = graphql.NewInterface(graphql.InterfaceConfig{
Name: "Named",
Fields: graphql.FieldConfigMap{
"name": &graphql.FieldConfig{
Type: graphql.String,
},
},
})
var dogType = graphql.NewObject(graphql.ObjectConfig{
Name: "Dog",
Interfaces: []*graphql.Interface{
namedType,
},
Fields: graphql.FieldConfigMap{
"name": &graphql.FieldConfig{
Type: graphql.String,
},
"barks": &graphql.FieldConfig{
Type: graphql.Boolean,
},
Name: "Mutation",
Fields: graphql.FieldConfigMap{
"writeArticle": &graphql.FieldConfig{
Type: blogArticle,
},
},
})
var objectType = graphql.NewObject(graphql.ObjectConfig{
Name: "Object",
IsTypeOf: func(value interface{}, info graphql.ResolveInfo) 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() {
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.FieldConfigMap{
"id": &graphql.FieldConfig{
Type: graphql.NewNonNull(graphql.String),
Description: "The id of the character.",
},
"name": &graphql.FieldConfig{
Type: graphql.String,
Description: "The name of the character.",
},
"appearsIn": &graphql.FieldConfig{
Type: graphql.NewList(episodeEnum),
Description: "Which movies they appear in.",
},
},
ResolveType: func(value interface{}, info graphql.ResolveInfo) *graphql.Object {
if character, ok := value.(StarWarsChar); ok {
id, _ := strconv.Atoi(character.Id)
human := GetHuman(id)
if human.Id != "" {
return humanType
}
}
return droidType
},
})
characterInterface.AddFieldConfig("friends", &graphql.FieldConfig{
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.FieldConfigMap{
"id": &graphql.FieldConfig{
Type: graphql.NewNonNull(graphql.String),
Description: "The id of the human.",
Resolve: func(p graphql.GQLFRParams) interface{} {
if human, ok := p.Source.(StarWarsChar); ok {
return human.Id
}
return nil
},
},
"name": &graphql.FieldConfig{
Type: graphql.String,
Description: "The name of the human.",
Resolve: func(p graphql.GQLFRParams) interface{} {
if human, ok := p.Source.(StarWarsChar); ok {
return human.Name
}
return nil
},
},
"friends": &graphql.FieldConfig{
Type: graphql.NewList(characterInterface),
Description: "The friends of the human, or an empty list if they have none.",
Resolve: func(p graphql.GQLFRParams) interface{} {
if human, ok := p.Source.(StarWarsChar); ok {
return human.Friends
}
return []interface{}{}
},
},
"appearsIn": &graphql.FieldConfig{
Type: graphql.NewList(episodeEnum),
Description: "Which movies they appear in.",
Resolve: func(p graphql.GQLFRParams) interface{} {
if human, ok := p.Source.(StarWarsChar); ok {
return human.AppearsIn
}
return nil
},
},
"homePlanet": &graphql.FieldConfig{
Type: graphql.String,
Description: "The home planet of the human, or null if unknown.",
Resolve: func(p graphql.GQLFRParams) interface{} {
if human, ok := p.Source.(StarWarsChar); ok {
return human.HomePlanet
}
return nil
},
},
},
Interfaces: []*graphql.Interface{
characterInterface,
},
})
droidType = graphql.NewObject(graphql.ObjectConfig{
Name: "Droid",
Description: "A mechanical creature in the Star Wars universe.",
Fields: graphql.FieldConfigMap{
"id": &graphql.FieldConfig{
Type: graphql.NewNonNull(graphql.String),
Description: "The id of the droid.",
Resolve: func(p graphql.GQLFRParams) interface{} {
if droid, ok := p.Source.(StarWarsChar); ok {
return droid.Id
}
return nil
},
},
"name": &graphql.FieldConfig{
Type: graphql.String,
Description: "The name of the droid.",
Resolve: func(p graphql.GQLFRParams) interface{} {
if droid, ok := p.Source.(StarWarsChar); ok {
return droid.Name
}
return nil
},
},
"friends": &graphql.FieldConfig{
Type: graphql.NewList(characterInterface),
Description: "The friends of the droid, or an empty list if they have none.",
Resolve: func(p graphql.GQLFRParams) interface{} {
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
}
return []interface{}{}
},
},
"appearsIn": &graphql.FieldConfig{
Type: graphql.NewList(episodeEnum),
Description: "Which movies they appear in.",
Resolve: func(p graphql.GQLFRParams) interface{} {
if droid, ok := p.Source.(StarWarsChar); ok {
return droid.AppearsIn
}
return nil
},
},
"primaryFunction": &graphql.FieldConfig{
Type: graphql.String,
Description: "The primary function of the droid.",
Resolve: func(p graphql.GQLFRParams) interface{} {
if droid, ok := p.Source.(StarWarsChar); ok {
return droid.PrimaryFunction
}
return nil
},
},
},
Interfaces: []*graphql.Interface{
characterInterface,
},
})
queryType := graphql.NewObject(graphql.ObjectConfig{
Name: "Query",
Fields: graphql.FieldConfigMap{
"hero": &graphql.FieldConfig{
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.GQLFRParams) (r interface{}) {
return GetHero(p.Args["episode"])
},
},
"human": &graphql.FieldConfig{
Type: humanType,
Args: graphql.FieldConfigArgument{
"id": &graphql.ArgumentConfig{
Description: "id of the human",
Type: graphql.NewNonNull(graphql.String),
},
},
Resolve: func(p graphql.GQLFRParams) (r interface{}) {
return GetHuman(p.Args["id"].(int))
},
},
"droid": &graphql.FieldConfig{
Type: droidType,
Args: graphql.FieldConfigArgument{
"id": &graphql.ArgumentConfig{
Description: "id of the droid",
Type: graphql.NewNonNull(graphql.String),
},
},
Resolve: func(p graphql.GQLFRParams) (r interface{}) {
return GetDroid(p.Args["id"].(int))
},
},
},
})
StarWarsSchema, _ = graphql.NewSchema(graphql.SchemaConfig{
Query: queryType,
})
}
func TestIsTypeOfUsedToResolveRuntimeTypeForInterface(t *testing.T) {
petType := graphql.NewInterface(graphql.InterfaceConfig{
Name: "Pet",
Fields: graphql.FieldConfigMap{
"name": &graphql.FieldConfig{
Type: graphql.String,
},
},
})
// ie declare that Dog belongs to Pet interface
_ = graphql.NewObject(graphql.ObjectConfig{
Name: "Dog",
Interfaces: []*graphql.Interface{
petType,
},
IsTypeOf: func(value interface{}, info graphql.ResolveInfo) bool {
_, ok := value.(*testDog)
return ok
},
Fields: graphql.FieldConfigMap{
"name": &graphql.FieldConfig{
Type: graphql.String,
Resolve: func(p graphql.GQLFRParams) interface{} {
if dog, ok := p.Source.(*testDog); ok {
return dog.Name
}
return nil
},
},
"woofs": &graphql.FieldConfig{
Type: graphql.Boolean,
Resolve: func(p graphql.GQLFRParams) interface{} {
if dog, ok := p.Source.(*testDog); ok {
return dog.Woofs
}
return nil
},
},
},
})
// ie declare that Cat belongs to Pet interface
_ = graphql.NewObject(graphql.ObjectConfig{
Name: "Cat",
Interfaces: []*graphql.Interface{
petType,
},
IsTypeOf: func(value interface{}, info graphql.ResolveInfo) bool {
_, ok := value.(*testCat)
return ok
},
Fields: graphql.FieldConfigMap{
"name": &graphql.FieldConfig{
Type: graphql.String,
Resolve: func(p graphql.GQLFRParams) interface{} {
if cat, ok := p.Source.(*testCat); ok {
return cat.Name
}
return nil
},
},
"meows": &graphql.FieldConfig{
Type: graphql.Boolean,
Resolve: func(p graphql.GQLFRParams) interface{} {
if cat, ok := p.Source.(*testCat); ok {
return cat.Meows
}
return nil
},
},
},
})
schema, err := graphql.NewSchema(graphql.SchemaConfig{
Query: graphql.NewObject(graphql.ObjectConfig{
Name: "Query",
Fields: graphql.FieldConfigMap{
"pets": &graphql.FieldConfig{
Type: graphql.NewList(petType),
Resolve: func(p graphql.GQLFRParams) interface{} {
return []interface{}{
&testDog{"Odie", true},
&testCat{"Garfield", false},
}
},
},
},
}),
})
if err != nil {
t.Fatalf("Error in schema %v", err.Error())
}
query := `{
pets {
name
... on Dog {
woofs
}
... on Cat {
meows
}
}
}`
expected := &graphql.Result{
Data: map[string]interface{}{
"pets": []interface{}{
map[string]interface{}{
"name": "Odie",
"woofs": bool(true),
},
map[string]interface{}{
"name": "Garfield",
"meows": bool(false),
},
},
},
Errors: nil,
}
resultChannel := make(chan *graphql.Result)
go graphql.Graphql(graphql.Params{
Schema: schema,
RequestString: query,
}, resultChannel)
result := <-resultChannel
if len(result.Errors) != 0 {
t.Fatalf("wrong result, unexpected errors: %v", result.Errors)
}
if !reflect.DeepEqual(expected, result) {
t.Fatalf("Unexpected result, Diff: %v", testutil.Diff(expected, result))
}
}