mirror of
https://github.com/graphql-python/graphene-django.git
synced 2024-11-10 19:57:15 +03:00
20a6cecc4c
This test passes after reverting the `CustomField` resolver change introduced in https://github.com/graphql-python/graphene-django/pull/1315, but fails with that resolver code present. For instance, adding back the resolver code gives a test failure showing: ``` Failed: Expected to perform 2 queries but 11 were done ``` This should ensure there aren't regressions that prevent query-optimization in the future.
650 lines
20 KiB
Python
650 lines
20 KiB
Python
import datetime
|
|
import re
|
|
from django.db.models import Count, Prefetch
|
|
|
|
import pytest
|
|
|
|
from graphene import List, NonNull, ObjectType, Schema, String
|
|
|
|
from ..fields import DjangoListField
|
|
from ..types import DjangoObjectType
|
|
from .models import (
|
|
Article as ArticleModel,
|
|
Film as FilmModel,
|
|
FilmDetails as FilmDetailsModel,
|
|
Reporter as ReporterModel,
|
|
)
|
|
|
|
|
|
class TestDjangoListField:
|
|
def test_only_django_object_types(self):
|
|
class TestType(ObjectType):
|
|
foo = String()
|
|
|
|
with pytest.raises(AssertionError):
|
|
list_field = DjangoListField(TestType)
|
|
|
|
def test_only_import_paths(self):
|
|
list_field = DjangoListField("graphene_django.tests.schema.Human")
|
|
from .schema import Human
|
|
|
|
assert list_field._type.of_type.of_type is Human
|
|
|
|
def test_non_null_type(self):
|
|
class Reporter(DjangoObjectType):
|
|
class Meta:
|
|
model = ReporterModel
|
|
fields = ("first_name",)
|
|
|
|
list_field = DjangoListField(NonNull(Reporter))
|
|
|
|
assert isinstance(list_field.type, List)
|
|
assert isinstance(list_field.type.of_type, NonNull)
|
|
assert list_field.type.of_type.of_type is Reporter
|
|
|
|
def test_get_django_model(self):
|
|
class Reporter(DjangoObjectType):
|
|
class Meta:
|
|
model = ReporterModel
|
|
fields = ("first_name",)
|
|
|
|
list_field = DjangoListField(Reporter)
|
|
assert list_field.model is ReporterModel
|
|
|
|
def test_list_field_default_queryset(self):
|
|
class Reporter(DjangoObjectType):
|
|
class Meta:
|
|
model = ReporterModel
|
|
fields = ("first_name",)
|
|
|
|
class Query(ObjectType):
|
|
reporters = DjangoListField(Reporter)
|
|
|
|
schema = Schema(query=Query)
|
|
|
|
query = """
|
|
query {
|
|
reporters {
|
|
firstName
|
|
}
|
|
}
|
|
"""
|
|
|
|
ReporterModel.objects.create(first_name="Tara", last_name="West")
|
|
ReporterModel.objects.create(first_name="Debra", last_name="Payne")
|
|
|
|
result = schema.execute(query)
|
|
|
|
assert not result.errors
|
|
assert result.data == {
|
|
"reporters": [{"firstName": "Tara"}, {"firstName": "Debra"}]
|
|
}
|
|
|
|
def test_list_field_queryset_is_not_cached(self):
|
|
class Reporter(DjangoObjectType):
|
|
class Meta:
|
|
model = ReporterModel
|
|
fields = ("first_name",)
|
|
|
|
class Query(ObjectType):
|
|
reporters = DjangoListField(Reporter)
|
|
|
|
schema = Schema(query=Query)
|
|
|
|
query = """
|
|
query {
|
|
reporters {
|
|
firstName
|
|
}
|
|
}
|
|
"""
|
|
|
|
result = schema.execute(query)
|
|
assert not result.errors
|
|
assert result.data == {"reporters": []}
|
|
|
|
ReporterModel.objects.create(first_name="Tara", last_name="West")
|
|
ReporterModel.objects.create(first_name="Debra", last_name="Payne")
|
|
|
|
result = schema.execute(query)
|
|
|
|
assert not result.errors
|
|
assert result.data == {
|
|
"reporters": [{"firstName": "Tara"}, {"firstName": "Debra"}]
|
|
}
|
|
|
|
def test_override_resolver(self):
|
|
class Reporter(DjangoObjectType):
|
|
class Meta:
|
|
model = ReporterModel
|
|
fields = ("first_name",)
|
|
|
|
class Query(ObjectType):
|
|
reporters = DjangoListField(Reporter)
|
|
|
|
def resolve_reporters(_, info):
|
|
return ReporterModel.objects.filter(first_name="Tara")
|
|
|
|
schema = Schema(query=Query)
|
|
|
|
query = """
|
|
query {
|
|
reporters {
|
|
firstName
|
|
}
|
|
}
|
|
"""
|
|
|
|
ReporterModel.objects.create(first_name="Tara", last_name="West")
|
|
ReporterModel.objects.create(first_name="Debra", last_name="Payne")
|
|
|
|
result = schema.execute(query)
|
|
|
|
assert not result.errors
|
|
assert result.data == {"reporters": [{"firstName": "Tara"}]}
|
|
|
|
def test_nested_list_field(self):
|
|
class Article(DjangoObjectType):
|
|
class Meta:
|
|
model = ArticleModel
|
|
fields = ("headline",)
|
|
|
|
class Reporter(DjangoObjectType):
|
|
class Meta:
|
|
model = ReporterModel
|
|
fields = ("first_name", "articles")
|
|
|
|
class Query(ObjectType):
|
|
reporters = DjangoListField(Reporter)
|
|
|
|
schema = Schema(query=Query)
|
|
|
|
query = """
|
|
query {
|
|
reporters {
|
|
firstName
|
|
articles {
|
|
headline
|
|
}
|
|
}
|
|
}
|
|
"""
|
|
|
|
r1 = ReporterModel.objects.create(first_name="Tara", last_name="West")
|
|
ReporterModel.objects.create(first_name="Debra", last_name="Payne")
|
|
|
|
ArticleModel.objects.create(
|
|
headline="Amazing news",
|
|
reporter=r1,
|
|
pub_date=datetime.date.today(),
|
|
pub_date_time=datetime.datetime.now(),
|
|
editor=r1,
|
|
)
|
|
ArticleModel.objects.create(
|
|
headline="Not so good news",
|
|
reporter=r1,
|
|
pub_date=datetime.date.today(),
|
|
pub_date_time=datetime.datetime.now(),
|
|
editor=r1,
|
|
)
|
|
|
|
result = schema.execute(query)
|
|
|
|
assert not result.errors
|
|
assert result.data == {
|
|
"reporters": [
|
|
{
|
|
"firstName": "Tara",
|
|
"articles": [
|
|
{"headline": "Amazing news"},
|
|
{"headline": "Not so good news"},
|
|
],
|
|
},
|
|
{"firstName": "Debra", "articles": []},
|
|
]
|
|
}
|
|
|
|
def test_override_resolver_nested_list_field(self):
|
|
class Article(DjangoObjectType):
|
|
class Meta:
|
|
model = ArticleModel
|
|
fields = ("headline",)
|
|
|
|
class Reporter(DjangoObjectType):
|
|
class Meta:
|
|
model = ReporterModel
|
|
fields = ("first_name", "articles")
|
|
|
|
def resolve_articles(reporter, info):
|
|
return reporter.articles.filter(headline__contains="Amazing")
|
|
|
|
class Query(ObjectType):
|
|
reporters = DjangoListField(Reporter)
|
|
|
|
schema = Schema(query=Query)
|
|
|
|
query = """
|
|
query {
|
|
reporters {
|
|
firstName
|
|
articles {
|
|
headline
|
|
}
|
|
}
|
|
}
|
|
"""
|
|
|
|
r1 = ReporterModel.objects.create(first_name="Tara", last_name="West")
|
|
ReporterModel.objects.create(first_name="Debra", last_name="Payne")
|
|
|
|
ArticleModel.objects.create(
|
|
headline="Amazing news",
|
|
reporter=r1,
|
|
pub_date=datetime.date.today(),
|
|
pub_date_time=datetime.datetime.now(),
|
|
editor=r1,
|
|
)
|
|
ArticleModel.objects.create(
|
|
headline="Not so good news",
|
|
reporter=r1,
|
|
pub_date=datetime.date.today(),
|
|
pub_date_time=datetime.datetime.now(),
|
|
editor=r1,
|
|
)
|
|
|
|
result = schema.execute(query)
|
|
|
|
assert not result.errors
|
|
assert result.data == {
|
|
"reporters": [
|
|
{"firstName": "Tara", "articles": [{"headline": "Amazing news"}]},
|
|
{"firstName": "Debra", "articles": []},
|
|
]
|
|
}
|
|
|
|
def test_get_queryset_filter(self):
|
|
class Reporter(DjangoObjectType):
|
|
class Meta:
|
|
model = ReporterModel
|
|
fields = ("first_name", "articles")
|
|
|
|
@classmethod
|
|
def get_queryset(cls, queryset, info):
|
|
# Only get reporters with at least 1 article
|
|
return queryset.annotate(article_count=Count("articles")).filter(
|
|
article_count__gt=0
|
|
)
|
|
|
|
class Query(ObjectType):
|
|
reporters = DjangoListField(Reporter)
|
|
|
|
def resolve_reporters(_, info):
|
|
return ReporterModel.objects.all()
|
|
|
|
schema = Schema(query=Query)
|
|
|
|
query = """
|
|
query {
|
|
reporters {
|
|
firstName
|
|
}
|
|
}
|
|
"""
|
|
|
|
r1 = ReporterModel.objects.create(first_name="Tara", last_name="West")
|
|
ReporterModel.objects.create(first_name="Debra", last_name="Payne")
|
|
|
|
ArticleModel.objects.create(
|
|
headline="Amazing news",
|
|
reporter=r1,
|
|
pub_date=datetime.date.today(),
|
|
pub_date_time=datetime.datetime.now(),
|
|
editor=r1,
|
|
)
|
|
|
|
result = schema.execute(query)
|
|
|
|
assert not result.errors
|
|
assert result.data == {"reporters": [{"firstName": "Tara"}]}
|
|
|
|
def test_resolve_list(self):
|
|
"""Resolving a plain list should work (and not call get_queryset)"""
|
|
|
|
class Reporter(DjangoObjectType):
|
|
class Meta:
|
|
model = ReporterModel
|
|
fields = ("first_name", "articles")
|
|
|
|
@classmethod
|
|
def get_queryset(cls, queryset, info):
|
|
# Only get reporters with at least 1 article
|
|
return queryset.annotate(article_count=Count("articles")).filter(
|
|
article_count__gt=0
|
|
)
|
|
|
|
class Query(ObjectType):
|
|
reporters = DjangoListField(Reporter)
|
|
|
|
def resolve_reporters(_, info):
|
|
return [ReporterModel.objects.get(first_name="Debra")]
|
|
|
|
schema = Schema(query=Query)
|
|
|
|
query = """
|
|
query {
|
|
reporters {
|
|
firstName
|
|
}
|
|
}
|
|
"""
|
|
|
|
r1 = ReporterModel.objects.create(first_name="Tara", last_name="West")
|
|
ReporterModel.objects.create(first_name="Debra", last_name="Payne")
|
|
|
|
ArticleModel.objects.create(
|
|
headline="Amazing news",
|
|
reporter=r1,
|
|
pub_date=datetime.date.today(),
|
|
pub_date_time=datetime.datetime.now(),
|
|
editor=r1,
|
|
)
|
|
|
|
result = schema.execute(query)
|
|
|
|
assert not result.errors
|
|
assert result.data == {"reporters": [{"firstName": "Debra"}]}
|
|
|
|
def test_get_queryset_foreign_key(self):
|
|
class Article(DjangoObjectType):
|
|
class Meta:
|
|
model = ArticleModel
|
|
fields = ("headline",)
|
|
|
|
@classmethod
|
|
def get_queryset(cls, queryset, info):
|
|
# Rose tinted glasses
|
|
return queryset.exclude(headline__contains="Not so good")
|
|
|
|
class Reporter(DjangoObjectType):
|
|
class Meta:
|
|
model = ReporterModel
|
|
fields = ("first_name", "articles")
|
|
|
|
class Query(ObjectType):
|
|
reporters = DjangoListField(Reporter)
|
|
|
|
schema = Schema(query=Query)
|
|
|
|
query = """
|
|
query {
|
|
reporters {
|
|
firstName
|
|
articles {
|
|
headline
|
|
}
|
|
}
|
|
}
|
|
"""
|
|
|
|
r1 = ReporterModel.objects.create(first_name="Tara", last_name="West")
|
|
ReporterModel.objects.create(first_name="Debra", last_name="Payne")
|
|
|
|
ArticleModel.objects.create(
|
|
headline="Amazing news",
|
|
reporter=r1,
|
|
pub_date=datetime.date.today(),
|
|
pub_date_time=datetime.datetime.now(),
|
|
editor=r1,
|
|
)
|
|
ArticleModel.objects.create(
|
|
headline="Not so good news",
|
|
reporter=r1,
|
|
pub_date=datetime.date.today(),
|
|
pub_date_time=datetime.datetime.now(),
|
|
editor=r1,
|
|
)
|
|
|
|
result = schema.execute(query)
|
|
|
|
assert not result.errors
|
|
assert result.data == {
|
|
"reporters": [
|
|
{"firstName": "Tara", "articles": [{"headline": "Amazing news"}]},
|
|
{"firstName": "Debra", "articles": []},
|
|
]
|
|
}
|
|
|
|
def test_resolve_list_external_resolver(self):
|
|
"""Resolving a plain list from external resolver should work (and not call get_queryset)"""
|
|
|
|
class Reporter(DjangoObjectType):
|
|
class Meta:
|
|
model = ReporterModel
|
|
fields = ("first_name", "articles")
|
|
|
|
@classmethod
|
|
def get_queryset(cls, queryset, info):
|
|
# Only get reporters with at least 1 article
|
|
return queryset.annotate(article_count=Count("articles")).filter(
|
|
article_count__gt=0
|
|
)
|
|
|
|
def resolve_reporters(_, info):
|
|
return [ReporterModel.objects.get(first_name="Debra")]
|
|
|
|
class Query(ObjectType):
|
|
reporters = DjangoListField(Reporter, resolver=resolve_reporters)
|
|
|
|
schema = Schema(query=Query)
|
|
|
|
query = """
|
|
query {
|
|
reporters {
|
|
firstName
|
|
}
|
|
}
|
|
"""
|
|
|
|
r1 = ReporterModel.objects.create(first_name="Tara", last_name="West")
|
|
ReporterModel.objects.create(first_name="Debra", last_name="Payne")
|
|
|
|
ArticleModel.objects.create(
|
|
headline="Amazing news",
|
|
reporter=r1,
|
|
pub_date=datetime.date.today(),
|
|
pub_date_time=datetime.datetime.now(),
|
|
editor=r1,
|
|
)
|
|
|
|
result = schema.execute(query)
|
|
|
|
assert not result.errors
|
|
assert result.data == {"reporters": [{"firstName": "Debra"}]}
|
|
|
|
def test_get_queryset_filter_external_resolver(self):
|
|
class Reporter(DjangoObjectType):
|
|
class Meta:
|
|
model = ReporterModel
|
|
fields = ("first_name", "articles")
|
|
|
|
@classmethod
|
|
def get_queryset(cls, queryset, info):
|
|
# Only get reporters with at least 1 article
|
|
return queryset.annotate(article_count=Count("articles")).filter(
|
|
article_count__gt=0
|
|
)
|
|
|
|
def resolve_reporters(_, info):
|
|
return ReporterModel.objects.all()
|
|
|
|
class Query(ObjectType):
|
|
reporters = DjangoListField(Reporter, resolver=resolve_reporters)
|
|
|
|
schema = Schema(query=Query)
|
|
|
|
query = """
|
|
query {
|
|
reporters {
|
|
firstName
|
|
}
|
|
}
|
|
"""
|
|
|
|
r1 = ReporterModel.objects.create(first_name="Tara", last_name="West")
|
|
ReporterModel.objects.create(first_name="Debra", last_name="Payne")
|
|
|
|
ArticleModel.objects.create(
|
|
headline="Amazing news",
|
|
reporter=r1,
|
|
pub_date=datetime.date.today(),
|
|
pub_date_time=datetime.datetime.now(),
|
|
editor=r1,
|
|
)
|
|
|
|
result = schema.execute(query)
|
|
|
|
assert not result.errors
|
|
assert result.data == {"reporters": [{"firstName": "Tara"}]}
|
|
|
|
def test_select_related_and_prefetch_related_are_respected(
|
|
self, django_assert_num_queries
|
|
):
|
|
class Article(DjangoObjectType):
|
|
class Meta:
|
|
model = ArticleModel
|
|
fields = ("headline", "editor", "reporter")
|
|
|
|
class Film(DjangoObjectType):
|
|
class Meta:
|
|
model = FilmModel
|
|
fields = ("genre", "details")
|
|
|
|
class FilmDetail(DjangoObjectType):
|
|
class Meta:
|
|
model = FilmDetailsModel
|
|
fields = ("location",)
|
|
|
|
class Reporter(DjangoObjectType):
|
|
class Meta:
|
|
model = ReporterModel
|
|
fields = ("first_name", "articles", "films")
|
|
|
|
class Query(ObjectType):
|
|
articles = DjangoListField(Article)
|
|
|
|
@staticmethod
|
|
def resolve_articles(root, info):
|
|
# Optimize for querying associated editors and reporters, and the films and film
|
|
# details of those reporters. This is similar to what would happen using a library
|
|
# like https://github.com/tfoxy/graphene-django-optimizer for a query like the one
|
|
# below (albeit simplified and hardcoded here).
|
|
return ArticleModel.objects.select_related(
|
|
"editor", "reporter"
|
|
).prefetch_related(
|
|
Prefetch(
|
|
"reporter__films",
|
|
queryset=FilmModel.objects.select_related("details"),
|
|
),
|
|
)
|
|
|
|
schema = Schema(query=Query)
|
|
|
|
query = """
|
|
query {
|
|
articles {
|
|
headline
|
|
|
|
editor {
|
|
firstName
|
|
}
|
|
|
|
reporter {
|
|
firstName
|
|
|
|
films {
|
|
genre
|
|
|
|
details {
|
|
location
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
"""
|
|
|
|
r1 = ReporterModel.objects.create(first_name="Tara", last_name="West")
|
|
r2 = ReporterModel.objects.create(first_name="Debra", last_name="Payne")
|
|
|
|
ArticleModel.objects.create(
|
|
headline="Amazing news",
|
|
reporter=r1,
|
|
pub_date=datetime.date.today(),
|
|
pub_date_time=datetime.datetime.now(),
|
|
editor=r2,
|
|
)
|
|
ArticleModel.objects.create(
|
|
headline="Not so good news",
|
|
reporter=r2,
|
|
pub_date=datetime.date.today(),
|
|
pub_date_time=datetime.datetime.now(),
|
|
editor=r1,
|
|
)
|
|
|
|
film1 = FilmModel.objects.create(genre="ac")
|
|
film2 = FilmModel.objects.create(genre="ot")
|
|
film3 = FilmModel.objects.create(genre="do")
|
|
FilmDetailsModel.objects.create(location="Hollywood", film=film1)
|
|
FilmDetailsModel.objects.create(location="Antarctica", film=film3)
|
|
r1.films.add(film1, film2)
|
|
r2.films.add(film3)
|
|
|
|
# We expect 2 queries to be performed based on the above resolver definition: one for all
|
|
# articles joined with the reporters model (for associated editors and reporters), and one
|
|
# for the films prefetch (which includes its `select_related` JOIN logic in its queryset)
|
|
with django_assert_num_queries(2) as captured:
|
|
result = schema.execute(query)
|
|
|
|
assert not result.errors
|
|
assert result.data == {
|
|
"articles": [
|
|
{
|
|
"headline": "Amazing news",
|
|
"editor": {"firstName": "Debra"},
|
|
"reporter": {
|
|
"firstName": "Tara",
|
|
"films": [
|
|
{"genre": "AC", "details": {"location": "Hollywood"}},
|
|
{"genre": "OT", "details": None},
|
|
],
|
|
},
|
|
},
|
|
{
|
|
"headline": "Not so good news",
|
|
"editor": {"firstName": "Tara"},
|
|
"reporter": {
|
|
"firstName": "Debra",
|
|
"films": [
|
|
{"genre": "DO", "details": {"location": "Antarctica"}},
|
|
],
|
|
},
|
|
},
|
|
]
|
|
}
|
|
|
|
assert len(captured.captured_queries) == 2 # Sanity-check
|
|
|
|
# First we should have queried for all articles in a single query, joining on the reporters
|
|
# model (for the editors and reporters ForeignKeys)
|
|
assert re.match(
|
|
r'SELECT .* "tests_article" INNER JOIN "tests_reporter"',
|
|
captured.captured_queries[0]["sql"],
|
|
)
|
|
|
|
# Then we should have queried for all of the films of all reporters, joined with the film
|
|
# details for each film, using a single query
|
|
assert re.match(
|
|
r'SELECT .* FROM "tests_film" INNER JOIN "tests_film_reporters" .* LEFT OUTER JOIN "tests_filmdetails"',
|
|
captured.captured_queries[1]["sql"],
|
|
)
|