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|
from textwrap import dedent
from graphql import graphql_sync
from ...types import Interface, ObjectType, Schema
from ...types.scalars import Int, String
from ..node import Node
class CustomNode(Node):
class Meta:
name = "Node"
@staticmethod
def to_global_id(type_, id):
return id
@staticmethod
def get_node_from_global_id(info, id, only_type=None):
assert info.schema is graphql_schema
if id in user_data:
return user_data.get(id)
else:
return photo_data.get(id)
class BasePhoto(Interface):
width = Int(description="The width of the photo in pixels")
class User(ObjectType):
class Meta:
interfaces = [CustomNode]
name = String(description="The full name of the user")
class Photo(ObjectType):
class Meta:
interfaces = [CustomNode, BasePhoto]
user_data = {"1": User(id="1", name="John Doe"), "2": User(id="2", name="Jane Smith")}
photo_data = {"3": Photo(id="3", width=300), "4": Photo(id="4", width=400)}
class RootQuery(ObjectType):
node = CustomNode.Field()
schema = Schema(query=RootQuery, types=[User, Photo])
graphql_schema = schema.graphql_schema
def test_str_schema_correct():
assert (
str(schema).strip()
== dedent(
'''
schema {
query: RootQuery
}
type User implements Node {
"""The ID of the object"""
id: ID!
"""The full name of the user"""
name: String
}
interface Node {
"""The ID of the object"""
id: ID!
}
type Photo implements Node & BasePhoto {
"""The ID of the object"""
id: ID!
"""The width of the photo in pixels"""
width: Int
}
interface BasePhoto {
"""The width of the photo in pixels"""
width: Int
}
type RootQuery {
node(
"""The ID of the object"""
id: ID!
): Node
}
'''
).strip()
)
def test_gets_the_correct_id_for_users():
query = """
{
node(id: "1") {
id
}
}
"""
expected = {"node": {"id": "1"}}
result = graphql_sync(graphql_schema, query)
assert not result.errors
assert result.data == expected
def test_gets_the_correct_id_for_photos():
query = """
{
node(id: "4") {
id
}
}
"""
expected = {"node": {"id": "4"}}
result = graphql_sync(graphql_schema, query)
assert not result.errors
assert result.data == expected
def test_gets_the_correct_name_for_users():
query = """
{
node(id: "1") {
id
... on User {
name
}
}
}
"""
expected = {"node": {"id": "1", "name": "John Doe"}}
result = graphql_sync(graphql_schema, query)
assert not result.errors
assert result.data == expected
def test_gets_the_correct_width_for_photos():
query = """
{
node(id: "4") {
id
... on Photo {
width
}
}
}
"""
expected = {"node": {"id": "4", "width": 400}}
result = graphql_sync(graphql_schema, query)
assert not result.errors
assert result.data == expected
def test_gets_the_correct_typename_for_users():
query = """
{
node(id: "1") {
id
__typename
}
}
"""
expected = {"node": {"id": "1", "__typename": "User"}}
result = graphql_sync(graphql_schema, query)
assert not result.errors
assert result.data == expected
def test_gets_the_correct_typename_for_photos():
query = """
{
node(id: "4") {
id
__typename
}
}
"""
expected = {"node": {"id": "4", "__typename": "Photo"}}
result = graphql_sync(graphql_schema, query)
assert not result.errors
assert result.data == expected
def test_ignores_photo_fragments_on_user():
query = """
{
node(id: "1") {
id
... on Photo {
width
}
}
}
"""
expected = {"node": {"id": "1"}}
result = graphql_sync(graphql_schema, query)
assert not result.errors
assert result.data == expected
def test_returns_null_for_bad_ids():
query = """
{
node(id: "5") {
id
}
}
"""
expected = {"node": None}
result = graphql_sync(graphql_schema, query)
assert not result.errors
assert result.data == expected
def test_have_correct_node_interface():
query = """
{
__type(name: "Node") {
name
kind
fields {
name
type {
kind
ofType {
name
kind
}
}
}
}
}
"""
expected = {
"__type": {
"name": "Node",
"kind": "INTERFACE",
"fields": [
{
"name": "id",
"type": {
"kind": "NON_NULL",
"ofType": {"name": "ID", "kind": "SCALAR"},
},
}
],
}
}
result = graphql_sync(graphql_schema, query)
assert not result.errors
assert result.data == expected
def test_has_correct_node_root_field():
query = """
{
__schema {
queryType {
fields {
name
type {
name
kind
}
args {
name
type {
kind
ofType {
name
kind
}
}
}
}
}
}
}
"""
expected = {
"__schema": {
"queryType": {
"fields": [
{
"name": "node",
"type": {"name": "Node", "kind": "INTERFACE"},
"args": [
{
"name": "id",
"type": {
"kind": "NON_NULL",
"ofType": {"name": "ID", "kind": "SCALAR"},
},
}
],
}
]
}
}
}
result = graphql_sync(graphql_schema, query)
assert not result.errors
assert result.data == expected
|
