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|
import asyncio
from typing import Awaitable
from pytest import mark
from graphql.execution import execute, execute_sync
from graphql.language import parse
from graphql.type import (
GraphQLArgument,
GraphQLField,
GraphQLInt,
GraphQLObjectType,
GraphQLSchema,
)
# noinspection PyPep8Naming
class NumberHolder:
theNumber: int
def __init__(self, originalNumber: int):
self.theNumber = originalNumber
# noinspection PyPep8Naming
class Root:
numberHolder: NumberHolder
def __init__(self, originalNumber: int):
self.numberHolder = NumberHolder(originalNumber)
def immediately_change_the_number(self, newNumber: int) -> NumberHolder:
self.numberHolder.theNumber = newNumber
return self.numberHolder
async def promise_to_change_the_number(self, new_number: int) -> NumberHolder:
await asyncio.sleep(0)
return self.immediately_change_the_number(new_number)
def fail_to_change_the_number(self, newNumber: int):
raise RuntimeError(f"Cannot change the number to {newNumber}")
async def promise_and_fail_to_change_the_number(self, newNumber: int):
await asyncio.sleep(0)
self.fail_to_change_the_number(newNumber)
numberHolderType = GraphQLObjectType(
"NumberHolder", {"theNumber": GraphQLField(GraphQLInt)}
)
# noinspection PyPep8Naming
schema = GraphQLSchema(
GraphQLObjectType("Query", {"numberHolder": GraphQLField(numberHolderType)}),
GraphQLObjectType(
"Mutation",
{
"immediatelyChangeTheNumber": GraphQLField(
numberHolderType,
args={"newNumber": GraphQLArgument(GraphQLInt)},
resolve=lambda obj, _info, newNumber: obj.immediately_change_the_number(
newNumber
),
),
"promiseToChangeTheNumber": GraphQLField(
numberHolderType,
args={"newNumber": GraphQLArgument(GraphQLInt)},
resolve=lambda obj, _info, newNumber: obj.promise_to_change_the_number(
newNumber
),
),
"failToChangeTheNumber": GraphQLField(
numberHolderType,
args={"newNumber": GraphQLArgument(GraphQLInt)},
resolve=lambda obj, _info, newNumber: obj.fail_to_change_the_number(
newNumber
),
),
"promiseAndFailToChangeTheNumber": GraphQLField(
numberHolderType,
args={"newNumber": GraphQLArgument(GraphQLInt)},
resolve=lambda obj, _info, newNumber: (
obj.promise_and_fail_to_change_the_number(newNumber)
),
),
},
),
)
def describe_execute_handles_mutation_execution_ordering():
@mark.asyncio
async def evaluates_mutations_serially():
document = parse(
"""
mutation M {
first: immediatelyChangeTheNumber(newNumber: 1) {
theNumber
},
second: promiseToChangeTheNumber(newNumber: 2) {
theNumber
},
third: immediatelyChangeTheNumber(newNumber: 3) {
theNumber
}
fourth: promiseToChangeTheNumber(newNumber: 4) {
theNumber
},
fifth: immediatelyChangeTheNumber(newNumber: 5) {
theNumber
}
}
"""
)
root_value = Root(6)
awaitable_result = execute(
schema=schema, document=document, root_value=root_value
)
assert isinstance(awaitable_result, Awaitable)
mutation_result = await awaitable_result
assert mutation_result == (
{
"first": {"theNumber": 1},
"second": {"theNumber": 2},
"third": {"theNumber": 3},
"fourth": {"theNumber": 4},
"fifth": {"theNumber": 5},
},
None,
)
def does_not_include_illegal_mutation_fields_in_output():
document = parse("mutation { thisIsIllegalDoNotIncludeMe }")
result = execute_sync(schema=schema, document=document)
assert result == ({}, None)
@mark.asyncio
async def evaluates_mutations_correctly_in_presence_of_a_failed_mutation():
document = parse(
"""
mutation M {
first: immediatelyChangeTheNumber(newNumber: 1) {
theNumber
},
second: promiseToChangeTheNumber(newNumber: 2) {
theNumber
},
third: failToChangeTheNumber(newNumber: 3) {
theNumber
}
fourth: promiseToChangeTheNumber(newNumber: 4) {
theNumber
},
fifth: immediatelyChangeTheNumber(newNumber: 5) {
theNumber
}
sixth: promiseAndFailToChangeTheNumber(newNumber: 6) {
theNumber
}
}
"""
)
root_value = Root(6)
awaitable_result = execute(
schema=schema, document=document, root_value=root_value
)
assert isinstance(awaitable_result, Awaitable)
result = await awaitable_result
assert result == (
{
"first": {"theNumber": 1},
"second": {"theNumber": 2},
"third": None,
"fourth": {"theNumber": 4},
"fifth": {"theNumber": 5},
"sixth": None,
},
[
{
"message": "Cannot change the number to 3",
"locations": [(9, 15)],
"path": ["third"],
},
{
"message": "Cannot change the number to 6",
"locations": [(18, 15)],
"path": ["sixth"],
},
],
)
|
