mirror of
https://github.com/Hopiu/django-cachalot.git
synced 2026-05-19 01:51:06 +00:00
87 lines
3.4 KiB
Python
87 lines
3.4 KiB
Python
from django import VERSION as DJANGO_VERSION
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from django.core.management.color import no_style
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from django.db import connection, transaction
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from .models import PostgresModel
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from ..utils import _get_tables
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class TestUtilsMixin:
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def setUp(self):
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self.is_sqlite = connection.vendor == 'sqlite'
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self.is_mysql = connection.vendor == 'mysql'
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self.is_postgresql = connection.vendor == 'postgresql'
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self.force_repoen_connection()
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# TODO: Remove this workaround when this issue is fixed:
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# https://code.djangoproject.com/ticket/29494
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def tearDown(self):
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if connection.vendor == 'postgresql':
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flush_sql_list = connection.ops.sql_flush(
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no_style(), (PostgresModel._meta.db_table,), ())
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with transaction.atomic():
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for sql in flush_sql_list:
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with connection.cursor() as cursor:
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cursor.execute(sql)
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def force_repoen_connection(self):
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if connection.vendor in ('mysql', 'postgresql'):
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# We need to reopen the connection or Django
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# will execute an extra SQL request below.
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connection.cursor()
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def assert_tables(self, queryset, *tables):
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tables = {table if isinstance(table, str)
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else table._meta.db_table for table in tables}
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self.assertSetEqual(_get_tables(queryset.db, queryset.query), tables)
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def assert_query_cached(self, queryset, result=None, result_type=None,
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compare_results=True, before=1, after=0):
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if result_type is None:
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result_type = list if result is None else type(result)
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with self.assertNumQueries(before):
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data1 = queryset.all()
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if result_type is list:
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data1 = list(data1)
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with self.assertNumQueries(after):
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data2 = queryset.all()
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if result_type is list:
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data2 = list(data2)
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if not compare_results:
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return
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assert_functions = {
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list: self.assertListEqual,
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set: self.assertSetEqual,
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dict: self.assertDictEqual,
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}
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assert_function = assert_functions.get(result_type, self.assertEqual)
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assert_function(data2, data1)
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if result is not None:
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assert_function(data2, result)
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def is_dj_21_below_and_is_sqlite(self):
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"""
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Checks if Django 2.1 or lower and if SQLite is the DB
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Django 2.1 and lower had two queries on SQLite DBs:
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After an insertion, e.g. Test.objects.create(name="asdf"),
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SQLite returns the queries:
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[{'sql': 'INSERT INTO "cachalot_test" ("name") VALUES (\'asd\')', 'time': '0.001'}, {'sql': 'BEGIN', 'time': '0.000'}]
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This can be seen with django.db import connection; print(connection.queries)
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In Django 2.2 and above, the latter was removed.
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:return: bool is Django 2.1 or below and is SQLite the DB
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"""
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django_version = DJANGO_VERSION
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if not self.is_sqlite:
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# Immediately know if SQLite
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return False
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if django_version[0] < 2:
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# Takes Django 0 and 1 out of the picture
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return True
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else:
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if django_version[0] == 2 and django_version[1] < 2:
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# Takes Django 2.0-2.1 out
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return True
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return False
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