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import sys
from typing import cast
import pytest
import strawberry
from strawberry import auto
from strawberry.types import ExecutionResult
import strawberry_django
from strawberry_django.optimizer import DjangoOptimizerExtension
from strawberry_django.pagination import (
OffsetPaginationInput,
apply,
apply_window_pagination,
)
from tests import models, utils
from tests.projects.faker import (
IssueFactory,
MilestoneFactory,
ProjectFactory,
TagFactory,
)
@strawberry_django.type(models.Fruit, pagination=True)
class Fruit:
id: auto
name: auto
@strawberry_django.type(models.Fruit, pagination=True)
class BerryFruit:
name: auto
@classmethod
def get_queryset(cls, queryset, info, **kwargs):
return queryset.filter(name__contains="berry")
@strawberry.type
class Query:
fruits: list[Fruit] = strawberry_django.field()
berries: list[BerryFruit] = strawberry_django.field()
@pytest.fixture
def query():
return utils.generate_query(Query)
def test_pagination(query, fruits):
result = query("{ fruits(pagination: { offset: 1, limit:1 }) { name } }")
assert not result.errors
assert result.data["fruits"] == [
{"name": "raspberry"},
]
def test_pagination_of_filtered_query(query, fruits):
result = query("{ berries(pagination: { offset: 1, limit:1 }) { name } }")
assert not result.errors
assert result.data["berries"] == [
{"name": "raspberry"},
]
@pytest.mark.django_db(transaction=True)
def test_nested_pagination(fruits, gql_client: utils.GraphQLTestClient):
# Test nested pagination with optimizer enabled
# Test query color and nested fruits, paginating the nested fruits
# Enable optimizer
query = """
query testNestedPagination {
projectList {
milestones(pagination: { limit: 1 }) {
name
}
}
}
"""
p = ProjectFactory.create()
MilestoneFactory.create_batch(2, project=p)
result = gql_client.query(query)
assert not result.errors
assert isinstance(result.data, dict)
project_list = result.data["projectList"]
assert isinstance(project_list, list)
assert len(project_list) == 1
assert len(project_list[0]["milestones"]) == 1
def test_resolver_pagination(fruits):
@strawberry.type
class Query:
@strawberry.field
def fruits(self, pagination: OffsetPaginationInput) -> list[Fruit]:
queryset = models.Fruit.objects.all()
return cast("list[Fruit]", apply(pagination, queryset))
query = utils.generate_query(Query)
result = query("{ fruits(pagination: { limit: 1 }) { id name } }")
assert isinstance(result, ExecutionResult)
assert not result.errors
assert result.data is not None
assert result.data["fruits"] == [
{"id": "1", "name": "strawberry"},
]
@pytest.mark.django_db(transaction=True)
def test_apply_window_pagination():
color = models.Color.objects.create(name="Red")
for i in range(10):
models.Fruit.objects.create(name=f"fruit{i}", color=color)
queryset = apply_window_pagination(
models.Fruit.objects.all(),
related_field_id="color_id",
offset=1,
limit=1,
)
assert queryset.count() == 1
fruit = queryset.get()
assert fruit.name == "fruit1"
assert fruit._strawberry_row_number == 2 # type: ignore
assert fruit._strawberry_total_count == 10 # type: ignore
@pytest.mark.parametrize("limit", [-1, sys.maxsize])
@pytest.mark.django_db(transaction=True)
def test_apply_window_pagination_with_no_limites(limit):
color = models.Color.objects.create(name="Red")
for i in range(10):
models.Fruit.objects.create(name=f"fruit{i}", color=color)
queryset = apply_window_pagination(
models.Fruit.objects.all(),
related_field_id="color_id",
offset=2,
limit=limit,
)
assert queryset.count() == 8
first_fruit = queryset.first()
assert first_fruit is not None
assert first_fruit.name == "fruit2"
assert first_fruit._strawberry_row_number == 3 # type: ignore
assert first_fruit._strawberry_total_count == 10 # type: ignore
@pytest.mark.django_db(transaction=True)
def test_nested_pagination_m2m(gql_client: utils.GraphQLTestClient):
# Create 2 tags and 3 issues
tags = [TagFactory(name=f"Tag {i + 1}") for i in range(2)]
issues = [IssueFactory(name=f"Issue {i + 1}") for i in range(3)]
# Assign issues 1 and 2 to the 1st tag
# Assign issues 2 and 3 to the 2nd tag
# This means that both tags share the 2nd issue
tags[0].issues.set(issues[:2])
tags[1].issues.set(issues[1:])
with utils.assert_num_queries(3 if DjangoOptimizerExtension.enabled.get() else 6):
result = gql_client.query(
"""
query {
tagConn {
totalCount
edges {
node {
name
issues {
totalCount
edges {
node {
name
}
}
}
}
}
}
}
"""
)
# Check the results
assert not result.errors
assert result.data == {
"tagConn": {
"totalCount": 2,
"edges": [
{
"node": {
"name": "Tag 1",
"issues": {
"totalCount": 2,
"edges": [
{"node": {"name": "Issue 1"}},
{"node": {"name": "Issue 2"}},
],
},
}
},
{
"node": {
"name": "Tag 2",
"issues": {
"totalCount": 2,
"edges": [
{"node": {"name": "Issue 2"}},
{"node": {"name": "Issue 3"}},
],
},
}
},
],
}
}
|
