diff --git a/example/starwars/starwars.go b/example/starwars/starwars.go
new file mode 100644
index 00000000000..8c416f1e86f
--- /dev/null
+++ b/example/starwars/starwars.go
@@ -0,0 +1,354 @@
+package starwars
+
+var Schema = `
+	schema {
+		query: Query
+		mutation: Mutation
+	}
+	# The query type, represents all of the entry points into our object graph
+	type Query {
+		hero(episode: Episode): Character
+		reviews(episode: Episode!): [Review]
+		search(text: String): [SearchResult]
+		character(id: ID!): Character
+		droid(id: ID!): Droid
+		human(id: ID!): Human
+		starship(id: ID!): Starship
+	}
+	# The mutation type, represents all updates we can make to our data
+	type Mutation {
+		createReview(episode: Episode, review: ReviewInput!): Review
+	}
+	# The episodes in the Star Wars trilogy
+	enum Episode {
+		# Star Wars Episode IV: A New Hope, released in 1977.
+		NEWHOPE
+		# Star Wars Episode V: The Empire Strikes Back, released in 1980.
+		EMPIRE
+		# Star Wars Episode VI: Return of the Jedi, released in 1983.
+		JEDI
+	}
+	# A character from the Star Wars universe
+	interface Character {
+		# The ID of the character
+		id: ID!
+		# The name of the character
+		name: String!
+		# The friends of the character, or an empty list if they have none
+		friends: [Character]
+		# The friends of the character exposed as a connection with edges
+		friendsConnection(first: Int, after: ID): FriendsConnection!
+		# The movies this character appears in
+		appearsIn: [Episode]!
+	}
+	# Units of height
+	enum LengthUnit {
+		# The standard unit around the world
+		METER
+		# Primarily used in the United States
+		FOOT
+	}
+	# A humanoid creature from the Star Wars universe
+	type Human implements Character {
+		# The ID of the human
+		id: ID!
+		# What this human calls themselves
+		name: String!
+		# Height in the preferred unit, default is meters
+		height(unit: LengthUnit = METER): Float
+		# Mass in kilograms, or null if unknown
+		mass: Float
+		# This human's friends, or an empty list if they have none
+		friends: [Character]
+		# The friends of the human exposed as a connection with edges
+		friendsConnection(first: Int, after: ID): FriendsConnection!
+		# The movies this human appears in
+		appearsIn: [Episode]!
+		# A list of starships this person has piloted, or an empty list if none
+		starships: [Starship]
+	}
+	# An autonomous mechanical character in the Star Wars universe
+	type Droid implements Character {
+		# The ID of the droid
+		id: ID!
+		# What others call this droid
+		name: String!
+		# This droid's friends, or an empty list if they have none
+		friends: [Character]
+		# The friends of the droid exposed as a connection with edges
+		friendsConnection(first: Int, after: ID): FriendsConnection!
+		# The movies this droid appears in
+		appearsIn: [Episode]!
+		# This droid's primary function
+		primaryFunction: String
+	}
+	# A connection object for a character's friends
+	type FriendsConnection {
+		# The total number of friends
+		totalCount: Int
+		# The edges for each of the character's friends.
+		edges: [FriendsEdge]
+		# A list of the friends, as a convenience when edges are not needed.
+		friends: [Character]
+		# Information for paginating this connection
+		pageInfo: PageInfo!
+	}
+	# An edge object for a character's friends
+	type FriendsEdge {
+		# A cursor used for pagination
+		cursor: ID!
+		# The character represented by this friendship edge
+		node: Character
+	}
+	# Information for paginating this connection
+	type PageInfo {
+		startCursor: ID
+		endCursor: ID
+		hasNextPage: Boolean!
+	}
+	# Represents a review for a movie
+	type Review {
+		# The number of stars this review gave, 1-5
+		stars: Int!
+		# Comment about the movie
+		commentary: String
+	}
+	# The input object sent when someone is creating a new review
+	input ReviewInput {
+		# 0-5 stars
+		stars: Int!
+		# Comment about the movie, optional
+		commentary: String
+	}
+	type Starship {
+		# The ID of the starship
+		id: ID!
+		# The name of the starship
+		name: String!
+		# Length of the starship, along the longest axis
+		length(unit: LengthUnit = METER): Float
+	}
+	union SearchResult = Human | Droid | Starship
+`
+
+type human struct {
+	ID        string
+	Name      string
+	Friends   []string
+	AppearsIn []string
+	Height    float64
+	Mass      int
+	Starships []string
+}
+
+var humans = []*human{
+	{
+		ID:        "1000",
+		Name:      "Luke Skywalker",
+		Friends:   []string{"1002", "1003", "2000", "2001"},
+		AppearsIn: []string{"NEWHOPE", "EMPIRE", "JEDI"},
+		Height:    1.72,
+		Mass:      77,
+		Starships: []string{"3001", "3003"},
+	},
+	{
+		ID:        "1001",
+		Name:      "Darth Vader",
+		Friends:   []string{"1004"},
+		AppearsIn: []string{"NEWHOPE", "EMPIRE", "JEDI"},
+		Height:    2.02,
+		Mass:      136,
+		Starships: []string{"3002"},
+	},
+	{
+		ID:        "1002",
+		Name:      "Han Solo",
+		Friends:   []string{"1000", "1003", "2001"},
+		AppearsIn: []string{"NEWHOPE", "EMPIRE", "JEDI"},
+		Height:    1.8,
+		Mass:      80,
+		Starships: []string{"3000", "3003"},
+	},
+	{
+		ID:        "1003",
+		Name:      "Leia Organa",
+		Friends:   []string{"1000", "1002", "2000", "2001"},
+		AppearsIn: []string{"NEWHOPE", "EMPIRE", "JEDI"},
+		Height:    1.5,
+		Mass:      49,
+	},
+	{
+		ID:        "1004",
+		Name:      "Wilhuff Tarkin",
+		Friends:   []string{"1001"},
+		AppearsIn: []string{"NEWHOPE"},
+		Height:    1.8,
+		Mass:      0,
+	},
+}
+
+var humanData = make(map[string]*human)
+
+func init() {
+	for _, h := range humans {
+		humanData[h.ID] = h
+	}
+}
+
+type droid struct {
+	ID              string
+	Name            string
+	Friends         []string
+	AppearsIn       []string
+	PrimaryFunction string
+}
+
+var droids = []*droid{
+	{
+		ID:              "2000",
+		Name:            "C-3PO",
+		Friends:         []string{"1000", "1002", "1003", "2001"},
+		AppearsIn:       []string{"NEWHOPE", "EMPIRE", "JEDI"},
+		PrimaryFunction: "Protocol",
+	},
+	{
+		ID:              "2001",
+		Name:            "R2-D2",
+		Friends:         []string{"1000", "1002", "1003"},
+		AppearsIn:       []string{"NEWHOPE", "EMPIRE", "JEDI"},
+		PrimaryFunction: "Astromech",
+	},
+}
+
+var droidData = make(map[string]*droid)
+
+func init() {
+	for _, d := range droids {
+		droidData[d.ID] = d
+	}
+}
+
+type starship struct {
+	ID     string
+	Name   string
+	Length float64
+}
+
+var starships = []*starship{
+	{
+		ID:     "3000",
+		Name:   "Millenium Falcon",
+		Length: 34.37,
+	},
+	{
+		ID:     "3001",
+		Name:   "X-Wing",
+		Length: 12.5,
+	},
+	{
+		ID:     "3002",
+		Name:   "TIE Advanced x1",
+		Length: 9.2,
+	},
+	{
+		ID:     "3003",
+		Name:   "Imperial shuttle",
+		Length: 20,
+	},
+}
+
+var starshipData = make(map[string]*starship)
+
+func init() {
+	for _, s := range starships {
+		starshipData[s.ID] = s
+	}
+}
+
+type Resolver struct{}
+
+func (r *Resolver) Hero(args struct{ Episode string }) characterResolver {
+	if args.Episode == "EMPIRE" {
+		return &humanResolver{humanData["1000"]}
+	}
+	return &droidResolver{droidData["2001"]}
+}
+
+func (r *Resolver) Human(args struct{ ID string }) *humanResolver {
+	h := humanData[args.ID]
+	if h == nil {
+		return nil
+	}
+	return &humanResolver{h}
+}
+
+type characterResolver interface {
+	ID() string
+	Name() string
+	Friends() []characterResolver
+	AppearsIn() []string
+}
+
+type humanResolver struct {
+	h *human
+}
+
+func (r *humanResolver) ID() string {
+	return r.h.ID
+}
+
+func (r *humanResolver) Name() string {
+	return r.h.Name
+}
+
+func (r *humanResolver) Height(args struct{ Unit string }) float64 {
+	switch args.Unit {
+	case "METER":
+		return r.h.Height
+	case "FOOT":
+		return r.h.Height * 3.28084
+	default:
+		panic("invalid unit")
+	}
+}
+
+func (r *humanResolver) Friends() []characterResolver {
+	return resolveCharacters(r.h.Friends)
+}
+
+func (r *humanResolver) AppearsIn() []string {
+	return r.h.AppearsIn
+}
+
+type droidResolver struct {
+	d *droid
+}
+
+func (r *droidResolver) ID() string {
+	return r.d.ID
+}
+
+func (r *droidResolver) Name() string {
+	return r.d.Name
+}
+
+func (r *droidResolver) Friends() []characterResolver {
+	return resolveCharacters(r.d.Friends)
+}
+
+func (r *droidResolver) AppearsIn() []string {
+	return r.d.AppearsIn
+}
+
+func resolveCharacters(ids []string) []characterResolver {
+	var characters []characterResolver
+	for _, id := range ids {
+		if h, ok := humanData[id]; ok {
+			characters = append(characters, &humanResolver{h})
+		}
+		if d, ok := droidData[id]; ok {
+			characters = append(characters, &droidResolver{d})
+		}
+	}
+	return characters
+}
diff --git a/graphql_test.go b/graphql_test.go
index f057842ba65..04dcba4f717 100644
--- a/graphql_test.go
+++ b/graphql_test.go
@@ -4,6 +4,8 @@ import (
 	"bytes"
 	"encoding/json"
 	"testing"
+
+	"github.com/neelance/graphql-go/example/starwars"
 )
 
 type helloWorldResolver struct{}
@@ -12,359 +14,6 @@ func (r *helloWorldResolver) Hello() string {
 	return "Hello world!"
 }
 
-var starWarsSchema = `
-	schema {
-		query: Query
-		mutation: Mutation
-	}
-	# The query type, represents all of the entry points into our object graph
-	type Query {
-		hero(episode: Episode): Character
-		reviews(episode: Episode!): [Review]
-		search(text: String): [SearchResult]
-		character(id: ID!): Character
-		droid(id: ID!): Droid
-		human(id: ID!): Human
-		starship(id: ID!): Starship
-	}
-	# The mutation type, represents all updates we can make to our data
-	type Mutation {
-		createReview(episode: Episode, review: ReviewInput!): Review
-	}
-	# The episodes in the Star Wars trilogy
-	enum Episode {
-		# Star Wars Episode IV: A New Hope, released in 1977.
-		NEWHOPE
-		# Star Wars Episode V: The Empire Strikes Back, released in 1980.
-		EMPIRE
-		# Star Wars Episode VI: Return of the Jedi, released in 1983.
-		JEDI
-	}
-	# A character from the Star Wars universe
-	interface Character {
-		# The ID of the character
-		id: ID!
-		# The name of the character
-		name: String!
-		# The friends of the character, or an empty list if they have none
-		friends: [Character]
-		# The friends of the character exposed as a connection with edges
-		friendsConnection(first: Int, after: ID): FriendsConnection!
-		# The movies this character appears in
-		appearsIn: [Episode]!
-	}
-	# Units of height
-	enum LengthUnit {
-		# The standard unit around the world
-		METER
-		# Primarily used in the United States
-		FOOT
-	}
-	# A humanoid creature from the Star Wars universe
-	type Human implements Character {
-		# The ID of the human
-		id: ID!
-		# What this human calls themselves
-		name: String!
-		# Height in the preferred unit, default is meters
-		height(unit: LengthUnit = METER): Float
-		# Mass in kilograms, or null if unknown
-		mass: Float
-		# This human's friends, or an empty list if they have none
-		friends: [Character]
-		# The friends of the human exposed as a connection with edges
-		friendsConnection(first: Int, after: ID): FriendsConnection!
-		# The movies this human appears in
-		appearsIn: [Episode]!
-		# A list of starships this person has piloted, or an empty list if none
-		starships: [Starship]
-	}
-	# An autonomous mechanical character in the Star Wars universe
-	type Droid implements Character {
-		# The ID of the droid
-		id: ID!
-		# What others call this droid
-		name: String!
-		# This droid's friends, or an empty list if they have none
-		friends: [Character]
-		# The friends of the droid exposed as a connection with edges
-		friendsConnection(first: Int, after: ID): FriendsConnection!
-		# The movies this droid appears in
-		appearsIn: [Episode]!
-		# This droid's primary function
-		primaryFunction: String
-	}
-	# A connection object for a character's friends
-	type FriendsConnection {
-		# The total number of friends
-		totalCount: Int
-		# The edges for each of the character's friends.
-		edges: [FriendsEdge]
-		# A list of the friends, as a convenience when edges are not needed.
-		friends: [Character]
-		# Information for paginating this connection
-		pageInfo: PageInfo!
-	}
-	# An edge object for a character's friends
-	type FriendsEdge {
-		# A cursor used for pagination
-		cursor: ID!
-		# The character represented by this friendship edge
-		node: Character
-	}
-	# Information for paginating this connection
-	type PageInfo {
-		startCursor: ID
-		endCursor: ID
-		hasNextPage: Boolean!
-	}
-	# Represents a review for a movie
-	type Review {
-		# The number of stars this review gave, 1-5
-		stars: Int!
-		# Comment about the movie
-		commentary: String
-	}
-	# The input object sent when someone is creating a new review
-	input ReviewInput {
-		# 0-5 stars
-		stars: Int!
-		# Comment about the movie, optional
-		commentary: String
-	}
-	type Starship {
-		# The ID of the starship
-		id: ID!
-		# The name of the starship
-		name: String!
-		# Length of the starship, along the longest axis
-		length(unit: LengthUnit = METER): Float
-	}
-	union SearchResult = Human | Droid | Starship
-`
-
-type Human struct {
-	ID        string
-	Name      string
-	Friends   []string
-	AppearsIn []string
-	Height    float64
-	Mass      int
-	Starships []string
-}
-
-var humans = []*Human{
-	{
-		ID:        "1000",
-		Name:      "Luke Skywalker",
-		Friends:   []string{"1002", "1003", "2000", "2001"},
-		AppearsIn: []string{"NEWHOPE", "EMPIRE", "JEDI"},
-		Height:    1.72,
-		Mass:      77,
-		Starships: []string{"3001", "3003"},
-	},
-	{
-		ID:        "1001",
-		Name:      "Darth Vader",
-		Friends:   []string{"1004"},
-		AppearsIn: []string{"NEWHOPE", "EMPIRE", "JEDI"},
-		Height:    2.02,
-		Mass:      136,
-		Starships: []string{"3002"},
-	},
-	{
-		ID:        "1002",
-		Name:      "Han Solo",
-		Friends:   []string{"1000", "1003", "2001"},
-		AppearsIn: []string{"NEWHOPE", "EMPIRE", "JEDI"},
-		Height:    1.8,
-		Mass:      80,
-		Starships: []string{"3000", "3003"},
-	},
-	{
-		ID:        "1003",
-		Name:      "Leia Organa",
-		Friends:   []string{"1000", "1002", "2000", "2001"},
-		AppearsIn: []string{"NEWHOPE", "EMPIRE", "JEDI"},
-		Height:    1.5,
-		Mass:      49,
-	},
-	{
-		ID:        "1004",
-		Name:      "Wilhuff Tarkin",
-		Friends:   []string{"1001"},
-		AppearsIn: []string{"NEWHOPE"},
-		Height:    1.8,
-		Mass:      0,
-	},
-}
-
-var humanData = make(map[string]*Human)
-
-func init() {
-	for _, h := range humans {
-		humanData[h.ID] = h
-	}
-}
-
-type Droid struct {
-	ID              string
-	Name            string
-	Friends         []string
-	AppearsIn       []string
-	PrimaryFunction string
-}
-
-var droids = []*Droid{
-	{
-		ID:              "2000",
-		Name:            "C-3PO",
-		Friends:         []string{"1000", "1002", "1003", "2001"},
-		AppearsIn:       []string{"NEWHOPE", "EMPIRE", "JEDI"},
-		PrimaryFunction: "Protocol",
-	},
-	{
-		ID:              "2001",
-		Name:            "R2-D2",
-		Friends:         []string{"1000", "1002", "1003"},
-		AppearsIn:       []string{"NEWHOPE", "EMPIRE", "JEDI"},
-		PrimaryFunction: "Astromech",
-	},
-}
-
-var droidData = make(map[string]*Droid)
-
-func init() {
-	for _, d := range droids {
-		droidData[d.ID] = d
-	}
-}
-
-type Starship struct {
-	ID     string
-	Name   string
-	Length float64
-}
-
-var starships = []*Starship{
-	{
-		ID:     "3000",
-		Name:   "Millenium Falcon",
-		Length: 34.37,
-	},
-	{
-		ID:     "3001",
-		Name:   "X-Wing",
-		Length: 12.5,
-	},
-	{
-		ID:     "3002",
-		Name:   "TIE Advanced x1",
-		Length: 9.2,
-	},
-	{
-		ID:     "3003",
-		Name:   "Imperial shuttle",
-		Length: 20,
-	},
-}
-
-var starshipData = make(map[string]*Starship)
-
-func init() {
-	for _, s := range starships {
-		starshipData[s.ID] = s
-	}
-}
-
-type starWarsResolver struct{}
-
-func (r *starWarsResolver) Hero(args struct{ Episode string }) characterResolver {
-	if args.Episode == "EMPIRE" {
-		return &humanResolver{humanData["1000"]}
-	}
-	return &droidResolver{droidData["2001"]}
-}
-
-func (r *starWarsResolver) Human(args struct{ ID string }) *humanResolver {
-	h := humanData[args.ID]
-	if h == nil {
-		return nil
-	}
-	return &humanResolver{h}
-}
-
-type characterResolver interface {
-	ID() string
-	Name() string
-	Friends() []characterResolver
-	AppearsIn() []string
-}
-
-type humanResolver struct {
-	h *Human
-}
-
-func (r *humanResolver) ID() string {
-	return r.h.ID
-}
-
-func (r *humanResolver) Name() string {
-	return r.h.Name
-}
-
-func (r *humanResolver) Height(args struct{ Unit string }) float64 {
-	switch args.Unit {
-	case "METER":
-		return r.h.Height
-	case "FOOT":
-		return r.h.Height * 3.28084
-	default:
-		panic("invalid unit")
-	}
-}
-
-func (r *humanResolver) Friends() []characterResolver {
-	return resolveCharacters(r.h.Friends)
-}
-
-func (r *humanResolver) AppearsIn() []string {
-	return r.h.AppearsIn
-}
-
-type droidResolver struct {
-	d *Droid
-}
-
-func (r *droidResolver) ID() string {
-	return r.d.ID
-}
-
-func (r *droidResolver) Name() string {
-	return r.d.Name
-}
-
-func (r *droidResolver) Friends() []characterResolver {
-	return resolveCharacters(r.d.Friends)
-}
-
-func (r *droidResolver) AppearsIn() []string {
-	return r.d.AppearsIn
-}
-
-func resolveCharacters(ids []string) []characterResolver {
-	var characters []characterResolver
-	for _, id := range ids {
-		if h, ok := humanData[id]; ok {
-			characters = append(characters, &humanResolver{h})
-		}
-		if d, ok := droidData[id]; ok {
-			characters = append(characters, &droidResolver{d})
-		}
-	}
-	return characters
-}
-
 var tests = []struct {
 	name      string
 	schema    string
@@ -399,8 +48,8 @@ var tests = []struct {
 
 	{
 		name:     "StarWarsBasic",
-		schema:   starWarsSchema,
-		resolver: &starWarsResolver{},
+		schema:   starwars.Schema,
+		resolver: &starwars.Resolver{},
 		query: `
 			{
 				hero {
@@ -435,8 +84,8 @@ var tests = []struct {
 
 	{
 		name:     "StarWarsArguments1",
-		schema:   starWarsSchema,
-		resolver: &starWarsResolver{},
+		schema:   starwars.Schema,
+		resolver: &starwars.Resolver{},
 		query: `
 			{
 				human(id: "1000") {
@@ -457,8 +106,8 @@ var tests = []struct {
 
 	{
 		name:     "StarWarsArguments2",
-		schema:   starWarsSchema,
-		resolver: &starWarsResolver{},
+		schema:   starwars.Schema,
+		resolver: &starwars.Resolver{},
 		query: `
 			{
 				human(id: "1000") {
@@ -479,8 +128,8 @@ var tests = []struct {
 
 	{
 		name:     "StarWarsAliases",
-		schema:   starWarsSchema,
-		resolver: &starWarsResolver{},
+		schema:   starwars.Schema,
+		resolver: &starwars.Resolver{},
 		query: `
 			{
 				empireHero: hero(episode: EMPIRE) {
@@ -505,8 +154,8 @@ var tests = []struct {
 
 	{
 		name:     "StarWarsFragments",
-		schema:   starWarsSchema,
-		resolver: &starWarsResolver{},
+		schema:   starwars.Schema,
+		resolver: &starwars.Resolver{},
 		query: `
 			{
 				leftComparison: hero(episode: EMPIRE) {
@@ -574,8 +223,8 @@ var tests = []struct {
 
 	{
 		name:     "StarWarsVariables1",
-		schema:   starWarsSchema,
-		resolver: &starWarsResolver{},
+		schema:   starwars.Schema,
+		resolver: &starwars.Resolver{},
 		query: `
 			query HeroNameAndFriends($episode: Episode) {
 				hero(episode: $episode) {
@@ -597,8 +246,8 @@ var tests = []struct {
 
 	{
 		name:     "StarWarsVariables2",
-		schema:   starWarsSchema,
-		resolver: &starWarsResolver{},
+		schema:   starwars.Schema,
+		resolver: &starwars.Resolver{},
 		query: `
 			query HeroNameAndFriends($episode: Episode) {
 				hero(episode: $episode) {
@@ -620,8 +269,8 @@ var tests = []struct {
 
 	{
 		name:     "StarWarsInclude1",
-		schema:   starWarsSchema,
-		resolver: &starWarsResolver{},
+		schema:   starwars.Schema,
+		resolver: &starwars.Resolver{},
 		query: `
 			query Hero($episode: Episode, $withoutFriends: Boolean!) {
 				hero(episode: $episode) {
@@ -647,8 +296,8 @@ var tests = []struct {
 
 	{
 		name:     "StarWarsInclude2",
-		schema:   starWarsSchema,
-		resolver: &starWarsResolver{},
+		schema:   starwars.Schema,
+		resolver: &starwars.Resolver{},
 		query: `
 			query Hero($episode: Episode, $withoutFriends: Boolean!) {
 				hero(episode: $episode) {
@@ -685,8 +334,8 @@ var tests = []struct {
 
 	{
 		name:     "StarWarsSkip1",
-		schema:   starWarsSchema,
-		resolver: &starWarsResolver{},
+		schema:   starwars.Schema,
+		resolver: &starwars.Resolver{},
 		query: `
 			query Hero($episode: Episode, $withFriends: Boolean!) {
 				hero(episode: $episode) {
@@ -716,8 +365,8 @@ var tests = []struct {
 
 	{
 		name:     "StarWarsSkip2",
-		schema:   starWarsSchema,
-		resolver: &starWarsResolver{},
+		schema:   starwars.Schema,
+		resolver: &starwars.Resolver{},
 		query: `
 			query Hero($episode: Episode, $withFriends: Boolean!) {
 				hero(episode: $episode) {