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|
from inspect import isawaitable
from typing import Any, NamedTuple, Optional
from pytest import mark
from graphql.execution import ExecutionResult, execute, execute_sync
from graphql.language import parse
from graphql.type import (
GraphQLBoolean,
GraphQLField,
GraphQLInterfaceType,
GraphQLList,
GraphQLObjectType,
GraphQLSchema,
GraphQLString,
GraphQLUnionType,
)
from graphql.utilities import build_schema
def sync_and_async(spec):
"""Decorator for running a test synchronously and asynchronously."""
return mark.asyncio(
mark.parametrize("sync", (True, False), ids=("sync", "async"))(spec)
)
def access_variants(spec):
"""Decorator for tests with dict and object access, including inheritance."""
return mark.asyncio(
mark.parametrize("access", ("dict", "object", "inheritance"))(spec)
)
async def execute_query(
sync: bool, schema: GraphQLSchema, query: str, root_value: Any = None
) -> ExecutionResult:
"""Execute the query against the given schema synchronously or asynchronously."""
assert isinstance(sync, bool)
assert isinstance(schema, GraphQLSchema)
assert isinstance(query, str)
document = parse(query)
result = (execute_sync if sync else execute)(schema, document, root_value)
if not sync and isawaitable(result):
result = await result
assert isinstance(result, ExecutionResult)
return result
def get_is_type_of(type_, sync=True):
"""Get a sync or async is_type_of function for the given type."""
if sync:
def is_type_of(obj, _info):
return isinstance(obj, type_)
else:
async def is_type_of(obj, _info):
return isinstance(obj, type_)
return is_type_of
def get_type_error(sync=True):
"""Get a sync or async is_type_of or type resolver function that raises an error."""
error = RuntimeError("We are testing this error")
if sync:
def type_error(*_args):
raise error
else:
async def type_error(*_args):
raise error
return type_error
class Dog(NamedTuple):
name: str
woofs: bool
class Cat(NamedTuple):
name: str
meows: bool
def describe_execute_handles_synchronous_execution_of_abstract_types():
@sync_and_async
async def is_type_of_used_to_resolve_runtime_type_for_interface(sync):
pet_type = GraphQLInterfaceType("Pet", {"name": GraphQLField(GraphQLString)})
dog_type = GraphQLObjectType(
"Dog",
{
"name": GraphQLField(GraphQLString),
"woofs": GraphQLField(GraphQLBoolean),
},
interfaces=[pet_type],
is_type_of=get_is_type_of(Dog, sync),
)
cat_type = GraphQLObjectType(
"Cat",
{
"name": GraphQLField(GraphQLString),
"meows": GraphQLField(GraphQLBoolean),
},
interfaces=[pet_type],
is_type_of=get_is_type_of(Cat, sync),
)
schema = GraphQLSchema(
GraphQLObjectType(
"Query",
{
"pets": GraphQLField(
GraphQLList(pet_type),
resolve=lambda *_args: [
Dog("Odie", True),
Cat("Garfield", False),
],
)
},
),
types=[cat_type, dog_type],
)
query = """
{
pets {
name
... on Dog {
woofs
}
... on Cat {
meows
}
}
}
"""
assert await execute_query(sync, schema, query) == (
{
"pets": [
{"name": "Odie", "woofs": True},
{"name": "Garfield", "meows": False},
]
},
None,
)
@sync_and_async
async def is_type_of_can_throw(sync):
pet_type = GraphQLInterfaceType("Pet", {"name": GraphQLField(GraphQLString)})
dog_type = GraphQLObjectType(
"Dog",
{
"name": GraphQLField(GraphQLString),
"woofs": GraphQLField(GraphQLBoolean),
},
interfaces=[pet_type],
is_type_of=get_type_error(sync),
)
cat_type = GraphQLObjectType(
"Cat",
{
"name": GraphQLField(GraphQLString),
"meows": GraphQLField(GraphQLBoolean),
},
interfaces=[pet_type],
is_type_of=None,
)
schema = GraphQLSchema(
GraphQLObjectType(
"Query",
{
"pets": GraphQLField(
GraphQLList(pet_type),
resolve=lambda *_args: [
Dog("Odie", True),
Cat("Garfield", False),
],
)
},
),
types=[dog_type, cat_type],
)
query = """
{
pets {
name
... on Dog {
woofs
}
... on Cat {
meows
}
}
}
"""
assert await execute_query(sync, schema, query) == (
{"pets": [None, None]},
[
{
"message": "We are testing this error",
"locations": [(3, 15)],
"path": ["pets", 0],
},
{
"message": "We are testing this error",
"locations": [(3, 15)],
"path": ["pets", 1],
},
],
)
@sync_and_async
async def is_type_of_with_no_suitable_type(sync):
# added in GraphQL-core to improve coverage
pet_type = GraphQLInterfaceType("Pet", {"name": GraphQLField(GraphQLString)})
dog_type = GraphQLObjectType(
"Dog",
{
"name": GraphQLField(GraphQLString),
"woofs": GraphQLField(GraphQLBoolean),
},
interfaces=[pet_type],
is_type_of=get_is_type_of(Cat, sync),
)
schema = GraphQLSchema(
GraphQLObjectType(
"Query",
{
"pets": GraphQLField(
GraphQLList(pet_type),
resolve=lambda *_args: [Dog("Odie", True)],
)
},
),
types=[dog_type],
)
query = """
{
pets {
name
... on Dog {
woofs
}
}
}
"""
message = (
"Abstract type 'Pet' must resolve to an Object type at runtime"
" for field 'Query.pets'."
" Either the 'Pet' type should provide a 'resolve_type' function"
" or each possible type should provide an 'is_type_of' function."
)
assert await execute_query(sync, schema, query) == (
{"pets": [None]},
[{"message": message, "locations": [(3, 15)], "path": ["pets", 0]}],
)
@sync_and_async
async def is_type_of_used_to_resolve_runtime_type_for_union(sync):
dog_type = GraphQLObjectType(
"Dog",
{
"name": GraphQLField(GraphQLString),
"woofs": GraphQLField(GraphQLBoolean),
},
is_type_of=get_is_type_of(Dog, sync),
)
cat_type = GraphQLObjectType(
"Cat",
{
"name": GraphQLField(GraphQLString),
"meows": GraphQLField(GraphQLBoolean),
},
is_type_of=get_is_type_of(Cat, sync),
)
pet_type = GraphQLUnionType("Pet", [cat_type, dog_type])
schema = GraphQLSchema(
GraphQLObjectType(
"Query",
{
"pets": GraphQLField(
GraphQLList(pet_type),
resolve=lambda *_args: [
Dog("Odie", True),
Cat("Garfield", False),
],
)
},
)
)
query = """
{
pets {
... on Dog {
name
woofs
}
... on Cat {
name
meows
}
}
}
"""
assert await execute_query(sync, schema, query) == (
{
"pets": [
{"name": "Odie", "woofs": True},
{"name": "Garfield", "meows": False},
]
},
None,
)
@sync_and_async
async def resolve_type_can_throw(sync):
pet_type = GraphQLInterfaceType(
"Pet",
{"name": GraphQLField(GraphQLString)},
resolve_type=get_type_error(sync),
)
dog_type = GraphQLObjectType(
"Dog",
{
"name": GraphQLField(GraphQLString),
"woofs": GraphQLField(GraphQLBoolean),
},
interfaces=[pet_type],
)
cat_type = GraphQLObjectType(
"Cat",
{
"name": GraphQLField(GraphQLString),
"meows": GraphQLField(GraphQLBoolean),
},
interfaces=[pet_type],
)
schema = GraphQLSchema(
GraphQLObjectType(
"Query",
{
"pets": GraphQLField(
GraphQLList(pet_type),
resolve=lambda *_args: [
Dog("Odie", True),
Cat("Garfield", False),
],
)
},
),
types=[dog_type, cat_type],
)
query = """
{
pets {
name
... on Dog {
woofs
}
... on Cat {
meows
}
}
}
"""
assert await execute_query(sync, schema, query) == (
{"pets": [None, None]},
[
{
"message": "We are testing this error",
"locations": [(3, 15)],
"path": ["pets", 0],
},
{
"message": "We are testing this error",
"locations": [(3, 15)],
"path": ["pets", 1],
},
],
)
def describe_using_typename_on_source_object():
expected = (
{
"pets": [
{"name": "Odie", "woofs": True},
{"name": "Garfield", "meows": False},
]
},
None,
)
# noinspection PyShadowingNames
def _root_value(access: str) -> Any:
if access == "dict":
return {
"pets": [
{"__typename": "Dog", "name": "Odie", "woofs": True},
{"__typename": "Cat", "name": "Garfield", "meows": False},
],
}
if access == "object":
class DogObject:
__typename = "Dog"
name = "Odie"
woofs = True
class CatObject:
__typename = "Cat"
name = "Garfield"
meows = False
class RootValueAsObject:
pets = [DogObject(), CatObject()]
return RootValueAsObject()
if access == "inheritance":
class Pet:
__typename = "Pet"
name: Optional[str] = None
class DogPet(Pet):
__typename = "Dog"
woofs: Optional[bool] = None
class Odie(DogPet):
name = "Odie"
woofs = True
class CatPet(Pet):
__typename = "Cat"
meows: Optional[bool] = None
class Tabby(CatPet):
pass
class Garfield(Tabby):
name = "Garfield"
meows = False
class RootValueWithInheritance:
pets = [Odie(), Garfield()]
return RootValueWithInheritance()
assert False, f"Unknown access variant: {access}" # pragma: no cover
def describe_union_type():
schema = build_schema(
"""
type Query {
pets: [Pet]
}
union Pet = Cat | Dog
type Cat {
name: String
meows: Boolean
}
type Dog {
name: String
woofs: Boolean
}
"""
)
query = """
{
pets {
name
... on Dog {
woofs
}
... on Cat {
meows
}
}
}
"""
@sync_and_async
@access_variants
async def resolve(sync, access):
root_value = _root_value(access)
assert await execute_query(sync, schema, query, root_value) == expected
def describe_interface_type():
schema = build_schema(
"""
type Query {
pets: [Pet]
}
interface Pet {
name: String
}
type Cat implements Pet {
name: String
meows: Boolean
}
type Dog implements Pet {
name: String
woofs: Boolean
}
"""
)
query = """
{
pets {
name
... on Dog {
woofs
}
... on Cat {
meows
}
}
}
"""
@sync_and_async
@access_variants
async def resolve(sync, access):
root_value = _root_value(access)
assert await execute_query(sync, schema, query, root_value) == expected
def resolve_type_on_interface_yields_useful_error():
schema = build_schema(
"""
type Query {
pet: Pet
}
interface Pet {
name: String
}
type Cat implements Pet {
name: String
}
type Dog implements Pet {
name: String
}
"""
)
document = parse(
"""
{
pet {
name
}
}
"""
)
def expect_error(for_type_name: Any, message: str) -> None:
root_value = {"pet": {"__typename": for_type_name}}
result = execute_sync(schema, document, root_value)
expected = (
{"pet": None},
[{"message": message, "locations": [(3, 15)], "path": ["pet"]}],
)
assert result == expected
expect_error(
None,
"Abstract type 'Pet' must resolve"
" to an Object type at runtime for field 'Query.pet'."
" Either the 'Pet' type should provide a 'resolve_type' function"
" or each possible type should provide an 'is_type_of' function.",
)
expect_error(
"Human",
"Abstract type 'Pet' was resolved to a type 'Human'"
" that does not exist inside the schema.",
)
expect_error(
"String", "Abstract type 'Pet' was resolved to a non-object type 'String'."
)
expect_error(
"__Schema",
"Runtime Object type '__Schema' is not a possible type for 'Pet'.",
)
# workaround since we can't inject resolve_type into SDL
schema.get_type("Pet").resolve_type = lambda *_args: [] # type: ignore
expect_error(
None,
"Abstract type 'Pet' must resolve"
" to an Object type at runtime for field 'Query.pet'"
" with value {'__typename': None}, received '[]'.",
)
|
