168 lines
6.5 KiB
Python
168 lines
6.5 KiB
Python
from __future__ import unicode_literals
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from operator import attrgetter
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from django.db import connection
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from django.test import TestCase, skipIfDBFeature, skipUnlessDBFeature
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from django.test import override_settings
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from .models import Country, Restaurant, Pizzeria, State, TwoFields
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class BulkCreateTests(TestCase):
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def setUp(self):
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self.data = [
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Country(name="United States of America", iso_two_letter="US"),
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Country(name="The Netherlands", iso_two_letter="NL"),
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Country(name="Germany", iso_two_letter="DE"),
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Country(name="Czech Republic", iso_two_letter="CZ")
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]
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def test_simple(self):
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created = Country.objects.bulk_create(self.data)
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self.assertEqual(len(created), 4)
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self.assertQuerysetEqual(Country.objects.order_by("-name"), [
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"United States of America", "The Netherlands", "Germany", "Czech Republic"
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], attrgetter("name"))
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created = Country.objects.bulk_create([])
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self.assertEqual(created, [])
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self.assertEqual(Country.objects.count(), 4)
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@skipUnlessDBFeature('has_bulk_insert')
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def test_efficiency(self):
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with self.assertNumQueries(1):
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Country.objects.bulk_create(self.data)
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def test_inheritance(self):
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Restaurant.objects.bulk_create([
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Restaurant(name="Nicholas's")
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])
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self.assertQuerysetEqual(Restaurant.objects.all(), [
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"Nicholas's",
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], attrgetter("name"))
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with self.assertRaises(ValueError):
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Pizzeria.objects.bulk_create([
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Pizzeria(name="The Art of Pizza")
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])
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self.assertQuerysetEqual(Pizzeria.objects.all(), [])
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self.assertQuerysetEqual(Restaurant.objects.all(), [
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"Nicholas's",
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], attrgetter("name"))
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def test_non_auto_increment_pk(self):
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State.objects.bulk_create([
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State(two_letter_code=s)
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for s in ["IL", "NY", "CA", "ME"]
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])
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self.assertQuerysetEqual(State.objects.order_by("two_letter_code"), [
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"CA", "IL", "ME", "NY",
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], attrgetter("two_letter_code"))
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@skipUnlessDBFeature('has_bulk_insert')
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def test_non_auto_increment_pk_efficiency(self):
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with self.assertNumQueries(1):
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State.objects.bulk_create([
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State(two_letter_code=s)
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for s in ["IL", "NY", "CA", "ME"]
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])
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self.assertQuerysetEqual(State.objects.order_by("two_letter_code"), [
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"CA", "IL", "ME", "NY",
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], attrgetter("two_letter_code"))
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@skipIfDBFeature('allows_primary_key_0')
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def test_zero_as_autoval(self):
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"""
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Zero as id for AutoField should raise exception in MySQL, because MySQL
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does not allow zero for automatic primary key.
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"""
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valid_country = Country(name='Germany', iso_two_letter='DE')
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invalid_country = Country(id=0, name='Poland', iso_two_letter='PL')
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with self.assertRaises(ValueError):
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Country.objects.bulk_create([valid_country, invalid_country])
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def test_batch_same_vals(self):
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# Sqlite had a problem where all the same-valued models were
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# collapsed to one insert.
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Restaurant.objects.bulk_create([
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Restaurant(name='foo') for i in range(0, 2)
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])
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self.assertEqual(Restaurant.objects.count(), 2)
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def test_large_batch(self):
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with override_settings(DEBUG=True):
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connection.queries = []
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TwoFields.objects.bulk_create([
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TwoFields(f1=i, f2=i + 1) for i in range(0, 1001)
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])
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self.assertEqual(TwoFields.objects.count(), 1001)
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self.assertEqual(
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TwoFields.objects.filter(f1__gte=450, f1__lte=550).count(),
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101)
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self.assertEqual(TwoFields.objects.filter(f2__gte=901).count(), 101)
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@skipUnlessDBFeature('has_bulk_insert')
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def test_large_single_field_batch(self):
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# SQLite had a problem with more than 500 UNIONed selects in single
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# query.
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Restaurant.objects.bulk_create([
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Restaurant() for i in range(0, 501)
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])
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@skipUnlessDBFeature('has_bulk_insert')
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def test_large_batch_efficiency(self):
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with override_settings(DEBUG=True):
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connection.queries = []
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TwoFields.objects.bulk_create([
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TwoFields(f1=i, f2=i + 1) for i in range(0, 1001)
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])
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self.assertTrue(len(connection.queries) < 10)
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def test_large_batch_mixed(self):
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"""
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Test inserting a large batch with objects having primary key set
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mixed together with objects without PK set.
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"""
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with override_settings(DEBUG=True):
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connection.queries = []
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TwoFields.objects.bulk_create([
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TwoFields(id=i if i % 2 == 0 else None, f1=i, f2=i + 1)
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for i in range(100000, 101000)])
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self.assertEqual(TwoFields.objects.count(), 1000)
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# We can't assume much about the ID's created, except that the above
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# created IDs must exist.
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id_range = range(100000, 101000, 2)
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self.assertEqual(TwoFields.objects.filter(id__in=id_range).count(), 500)
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self.assertEqual(TwoFields.objects.exclude(id__in=id_range).count(), 500)
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@skipUnlessDBFeature('has_bulk_insert')
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def test_large_batch_mixed_efficiency(self):
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"""
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Test inserting a large batch with objects having primary key set
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mixed together with objects without PK set.
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"""
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with override_settings(DEBUG=True):
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connection.queries = []
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TwoFields.objects.bulk_create([
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TwoFields(id=i if i % 2 == 0 else None, f1=i, f2=i + 1)
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for i in range(100000, 101000)])
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self.assertTrue(len(connection.queries) < 10)
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def test_explicit_batch_size(self):
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objs = [TwoFields(f1=i, f2=i) for i in range(0, 4)]
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TwoFields.objects.bulk_create(objs, 2)
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self.assertEqual(TwoFields.objects.count(), len(objs))
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TwoFields.objects.all().delete()
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TwoFields.objects.bulk_create(objs, len(objs))
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self.assertEqual(TwoFields.objects.count(), len(objs))
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@skipUnlessDBFeature('has_bulk_insert')
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def test_explicit_batch_size_efficiency(self):
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objs = [TwoFields(f1=i, f2=i) for i in range(0, 100)]
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with self.assertNumQueries(2):
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TwoFields.objects.bulk_create(objs, 50)
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TwoFields.objects.all().delete()
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with self.assertNumQueries(1):
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TwoFields.objects.bulk_create(objs, len(objs))
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