func TestTypeSystem_UnionTypesMustBeResolvable_AcceptsAUnionOfObjectTypesDefiningIsTypeOf(t *testing.T) {
_, err := schemaWithFieldType(graphql.NewUnion(graphql.UnionConfig{
Name: "SomeUnion",
Types: []*graphql.Object{objectWithIsTypeOf},
}))
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
}
func TestTypeSystem_DefinitionExample_ProhibitsNilTypeInUnions(t *testing.T) {
ttype := graphql.NewUnion(graphql.UnionConfig{
Name: "BadUnion",
Types: []*graphql.Object{nil},
})
expected := `BadUnion may only contain Object types, it cannot contain: <nil>.`
if ttype.Error().Error() != expected {
t.Fatalf(`expected %v , got: %v`, expected, ttype.Error())
}
}
func TestTypeSystem_UnionTypesMustBeArray_RejectsAUnionTypeWithoutTypes(t *testing.T) {
_, err := schemaWithFieldType(graphql.NewUnion(graphql.UnionConfig{
Name: "SomeUnion",
ResolveType: func(p graphql.ResolveTypeParams) *graphql.Object {
return nil
},
}))
expectedError := "Must provide Array of types for Union SomeUnion."
if err == nil || err.Error() != expectedError {
t.Fatalf("Expected error: %v, got %v", expectedError, err)
}
}
func TestTypeSystem_UnionTypesMustBeResolvable_RejectsAUnionTypeNotDefiningResolveTypeOfObjectTypesNotDefiningIsTypeOf(t *testing.T) {
_, err := schemaWithFieldType(graphql.NewUnion(graphql.UnionConfig{
Name: "SomeUnion",
Types: []*graphql.Object{someObjectType},
}))
expectedError := `Union Type SomeUnion does not provide a "resolveType" function and ` +
`possible Type SomeObject does not provide a "isTypeOf" function. ` +
`There is no way to resolve this possible type during execution.`
if err == nil || err.Error() != expectedError {
t.Fatalf("Expected error: %v, got %v", expectedError, err)
}
}
func TestTypeSystem_UnionTypesMustBeResolvable_AcceptsAUnionTypeDefiningResolveType(t *testing.T) {
_, err := schemaWithFieldType(graphql.NewUnion(graphql.UnionConfig{
Name: "SomeUnion",
Types: []*graphql.Object{someObjectType},
ResolveType: func(p graphql.ResolveTypeParams) *graphql.Object {
return nil
},
}))
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
}
func schemaWithUnionOfType(ttype *graphql.Object) (graphql.Schema, error) {
badObjectType := graphql.NewUnion(graphql.UnionConfig{
Name: "BadUnion",
ResolveType: func(p graphql.ResolveTypeParams) *graphql.Object {
return nil
},
Types: []*graphql.Object{ttype},
})
return graphql.NewSchema(graphql.SchemaConfig{
Query: graphql.NewObject(graphql.ObjectConfig{
Name: "Query",
Fields: graphql.Fields{
"f": &graphql.Field{
Type: badObjectType,
},
},
}),
})
}
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 canineInterface = graphql.NewInterface(graphql.InterfaceConfig{
Name: "Canine",
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(p graphql.IsTypeOfParams) 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,
canineInterface,
},
})
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(p graphql.IsTypeOfParams) 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(p graphql.ResolveTypeParams) *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(p graphql.IsTypeOfParams) 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(p graphql.IsTypeOfParams) 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(p graphql.ResolveTypeParams) *graphql.Object {
// not used for validation
return nil
},
})
var humanOrAlienUnion = graphql.NewUnion(graphql.UnionConfig{
Name: "HumanOrAlien",
Types: []*graphql.Object{
alienType,
humanType,
},
ResolveType: func(p graphql.ResolveTypeParams) *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,
Directives: []*graphql.Directive{
graphql.NewDirective(graphql.DirectiveConfig{
Name: "operationOnly",
Locations: []string{graphql.DirectiveLocationQuery},
}),
graphql.IncludeDirective,
graphql.SkipDirective,
},
Types: []graphql.Type{
catType,
dogType,
humanType,
alienType,
},
})
if err != nil {
panic(err)
}
TestSchema = &schema
}
var objectWithIsTypeOf = graphql.NewObject(graphql.ObjectConfig{
Name: "ObjectWithIsTypeOf",
IsTypeOf: func(p graphql.IsTypeOfParams) bool {
return true
},
Fields: graphql.Fields{
"f": &graphql.Field{
Type: graphql.String,
},
},
})
var someUnionType = graphql.NewUnion(graphql.UnionConfig{
Name: "SomeUnion",
ResolveType: func(p graphql.ResolveTypeParams) *graphql.Object {
return nil
},
Types: []*graphql.Object{
someObjectType,
},
})
var someInterfaceType = graphql.NewInterface(graphql.InterfaceConfig{
Name: "SomeInterface",
ResolveType: func(p graphql.ResolveTypeParams) *graphql.Object {
return nil
},
Fields: graphql.Fields{
"f": &graphql.Field{
Type: graphql.String,
},
},
})
Type: graphql.Boolean,
},
},
IsTypeOf: func(p graphql.IsTypeOfParams) bool {
_, ok := p.Value.(*testCat2)
return ok
},
})
var petType = graphql.NewUnion(graphql.UnionConfig{
Name: "Pet",
Types: []*graphql.Object{
dogType, catType,
},
ResolveType: func(p graphql.ResolveTypeParams) *graphql.Object {
if _, ok := p.Value.(*testCat2); ok {
return catType
}
if _, ok := p.Value.(*testDog2); ok {
return dogType
}
return nil
},
})
var personType = graphql.NewObject(graphql.ObjectConfig{
Name: "Person",
Interfaces: []*graphql.Interface{
namedType,
},
Fields: graphql.Fields{
"name": &graphql.Field{
Type: graphql.String,
},
},
})
var objectType = graphql.NewObject(graphql.ObjectConfig{
Name: "Object",
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 TestResolveTypeOnUnionYieldsUsefulError(t *testing.T) {
humanType := graphql.NewObject(graphql.ObjectConfig{
Name: "Human",
Fields: graphql.Fields{
"name": &graphql.Field{
Type: graphql.String,
},
},
})
dogType := graphql.NewObject(graphql.ObjectConfig{
Name: "Dog",
Fields: graphql.Fields{
"name": &graphql.Field{
Type: graphql.String,
},
"woofs": &graphql.Field{
Type: graphql.Boolean,
},
},
})
catType := graphql.NewObject(graphql.ObjectConfig{
Name: "Cat",
Fields: graphql.Fields{
"name": &graphql.Field{
Type: graphql.String,
},
"meows": &graphql.Field{
Type: graphql.Boolean,
},
},
})
petType := graphql.NewUnion(graphql.UnionConfig{
Name: "Pet",
Types: []*graphql.Object{
dogType, catType,
},
ResolveType: func(p graphql.ResolveTypeParams) *graphql.Object {
if _, ok := p.Value.(*testCat); ok {
return catType
}
if _, ok := p.Value.(*testDog); ok {
return dogType
}
if _, ok := p.Value.(*testHuman); ok {
return humanType
}
return nil
},
})
schema, err := graphql.NewSchema(graphql.SchemaConfig{
Query: graphql.NewObject(graphql.ObjectConfig{
Name: "Query",
Fields: graphql.Fields{
"pets": &graphql.Field{
Type: graphql.NewList(petType),
Resolve: func(p graphql.ResolveParams) (interface{}, error) {
return []interface{}{
&testDog{"Odie", true},
&testCat{"Garfield", false},
&testHuman{"Jon"},
}, nil
},
},
},
}),
})
if err != nil {
t.Fatalf("Error in schema %v", err.Error())
}
query := `{
pets {
... on Dog {
name
woofs
}
... on Cat {
name
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{
{
Message: `Runtime Object type "Human" is not a possible type for "Pet".`,
Locations: []location.SourceLocation{},
},
},
}
result := graphql.Do(graphql.Params{
Schema: schema,
RequestString: query,
})
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))
}
}
func TestIsTypeOfUsedToResolveRuntimeTypeForUnion(t *testing.T) {
dogType := graphql.NewObject(graphql.ObjectConfig{
Name: "Dog",
IsTypeOf: func(p graphql.IsTypeOfParams) bool {
_, ok := p.Value.(*testDog)
return ok
},
Fields: graphql.Fields{
"name": &graphql.Field{
Type: graphql.String,
},
"woofs": &graphql.Field{
Type: graphql.Boolean,
},
},
})
catType := graphql.NewObject(graphql.ObjectConfig{
Name: "Cat",
IsTypeOf: func(p graphql.IsTypeOfParams) bool {
_, ok := p.Value.(*testCat)
return ok
},
Fields: graphql.Fields{
"name": &graphql.Field{
Type: graphql.String,
},
"meows": &graphql.Field{
Type: graphql.Boolean,
},
},
})
// ie declare Pet has Dot and Cat object types
petType := graphql.NewUnion(graphql.UnionConfig{
Name: "Pet",
Types: []*graphql.Object{
dogType, catType,
},
})
schema, err := graphql.NewSchema(graphql.SchemaConfig{
Query: graphql.NewObject(graphql.ObjectConfig{
Name: "Query",
Fields: graphql.Fields{
"pets": &graphql.Field{
Type: graphql.NewList(petType),
Resolve: func(p graphql.ResolveParams) (interface{}, error) {
return []interface{}{
&testDog{"Odie", true},
&testCat{"Garfield", false},
}, nil
},
},
},
}),
})
if err != nil {
t.Fatalf("Error in schema %v", err.Error())
}
query := `{
pets {
... on Dog {
name
woofs
}
... on Cat {
name
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,
}
result := graphql.Do(graphql.Params{
Schema: schema,
RequestString: query,
})
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))
}
}