237 lines
7.3 KiB
Python
237 lines
7.3 KiB
Python
# -*- coding: utf-8 -*-
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from __future__ import unicode_literals
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from django.db import IntegrityError, transaction
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from django.test import TestCase, skipIfDBFeature
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from django.utils import six
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from .models import Bar, Business, Employee, Foo
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class BasicCustomPKTests(TestCase):
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@classmethod
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def setUpTestData(cls):
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cls.dan = Employee.objects.create(
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employee_code=123, first_name="Dan", last_name="Jones",
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)
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cls.fran = Employee.objects.create(
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employee_code=456, first_name="Fran", last_name="Bones",
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)
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cls.business = Business.objects.create(name="Sears")
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cls.business.employees.add(cls.dan, cls.fran)
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def test_querysets(self):
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"""
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Both pk and custom attribute_name can be used in filter and friends
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"""
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self.assertQuerysetEqual(
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Employee.objects.filter(pk=123), [
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"Dan Jones",
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],
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six.text_type
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)
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self.assertQuerysetEqual(
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Employee.objects.filter(employee_code=123), [
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"Dan Jones",
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],
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six.text_type
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)
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self.assertQuerysetEqual(
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Employee.objects.filter(pk__in=[123, 456]), [
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"Fran Bones",
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"Dan Jones",
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],
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six.text_type
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)
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self.assertQuerysetEqual(
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Employee.objects.all(), [
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"Fran Bones",
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"Dan Jones",
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],
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six.text_type
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)
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self.assertQuerysetEqual(
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Business.objects.filter(name="Sears"), [
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"Sears"
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],
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lambda b: b.name
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)
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self.assertQuerysetEqual(
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Business.objects.filter(pk="Sears"), [
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"Sears",
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],
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lambda b: b.name
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)
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def test_querysets_related_name(self):
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"""
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Custom pk doesn't affect related_name based lookups
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"""
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self.assertQuerysetEqual(
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self.business.employees.all(), [
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"Fran Bones",
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"Dan Jones",
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],
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six.text_type
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)
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self.assertQuerysetEqual(
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self.fran.business_set.all(), [
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"Sears",
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],
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lambda b: b.name
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)
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def test_querysets_relational(self):
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"""
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Queries across tables, involving primary key
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"""
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self.assertQuerysetEqual(
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Employee.objects.filter(business__name="Sears"), [
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"Fran Bones",
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"Dan Jones",
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],
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six.text_type,
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)
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self.assertQuerysetEqual(
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Employee.objects.filter(business__pk="Sears"), [
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"Fran Bones",
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"Dan Jones",
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],
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six.text_type,
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)
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self.assertQuerysetEqual(
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Business.objects.filter(employees__employee_code=123), [
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"Sears",
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],
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lambda b: b.name
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)
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self.assertQuerysetEqual(
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Business.objects.filter(employees__pk=123), [
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"Sears",
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],
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lambda b: b.name,
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)
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self.assertQuerysetEqual(
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Business.objects.filter(employees__first_name__startswith="Fran"), [
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"Sears",
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],
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lambda b: b.name
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)
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def test_get(self):
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"""
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Get can accept pk or the real attribute name
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"""
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self.assertEqual(Employee.objects.get(pk=123), self.dan)
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self.assertEqual(Employee.objects.get(pk=456), self.fran)
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with self.assertRaises(Employee.DoesNotExist):
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Employee.objects.get(pk=42)
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# Use the name of the primary key, rather than pk.
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self.assertEqual(Employee.objects.get(employee_code=123), self.dan)
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def test_pk_attributes(self):
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"""
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pk and attribute name are available on the model
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No default id attribute is added
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"""
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# pk can be used as a substitute for the primary key.
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# The primary key can be accessed via the pk property on the model.
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e = Employee.objects.get(pk=123)
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self.assertEqual(e.pk, 123)
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# Or we can use the real attribute name for the primary key:
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self.assertEqual(e.employee_code, 123)
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with self.assertRaises(AttributeError):
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e.id
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def test_in_bulk(self):
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"""
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Custom pks work with in_bulk, both for integer and non-integer types
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"""
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emps = Employee.objects.in_bulk([123, 456])
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self.assertEqual(emps[123], self.dan)
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self.assertEqual(Business.objects.in_bulk(["Sears"]), {
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"Sears": self.business,
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})
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def test_save(self):
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"""
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custom pks do not affect save
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"""
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fran = Employee.objects.get(pk=456)
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fran.last_name = "Jones"
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fran.save()
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self.assertQuerysetEqual(
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Employee.objects.filter(last_name="Jones"), [
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"Dan Jones",
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"Fran Jones",
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],
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six.text_type
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)
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class CustomPKTests(TestCase):
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def test_custom_pk_create(self):
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"""
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New objects can be created both with pk and the custom name
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"""
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Employee.objects.create(employee_code=1234, first_name="Foo", last_name="Bar")
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Employee.objects.create(pk=1235, first_name="Foo", last_name="Baz")
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Business.objects.create(name="Bears")
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Business.objects.create(pk="Tears")
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def test_unicode_pk(self):
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# Primary key may be unicode string
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Business.objects.create(name='jaźń')
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def test_unique_pk(self):
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# The primary key must also obviously be unique, so trying to create a
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# new object with the same primary key will fail.
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Employee.objects.create(
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employee_code=123, first_name="Frank", last_name="Jones"
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)
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with self.assertRaises(IntegrityError):
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with transaction.atomic():
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Employee.objects.create(employee_code=123, first_name="Fred", last_name="Jones")
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def test_zero_non_autoincrement_pk(self):
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Employee.objects.create(
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employee_code=0, first_name="Frank", last_name="Jones"
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)
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employee = Employee.objects.get(pk=0)
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self.assertEqual(employee.employee_code, 0)
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def test_custom_field_pk(self):
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# Regression for #10785 -- Custom fields can be used for primary keys.
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new_bar = Bar.objects.create()
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new_foo = Foo.objects.create(bar=new_bar)
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f = Foo.objects.get(bar=new_bar.pk)
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self.assertEqual(f, new_foo)
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self.assertEqual(f.bar, new_bar)
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f = Foo.objects.get(bar=new_bar)
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self.assertEqual(f, new_foo),
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self.assertEqual(f.bar, new_bar)
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# SQLite lets objects be saved with an empty primary key, even though an
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# integer is expected. So we can't check for an error being raised in that
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# case for SQLite. Remove it from the suite for this next bit.
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@skipIfDBFeature('supports_unspecified_pk')
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def test_required_pk(self):
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# The primary key must be specified, so an error is raised if you
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# try to create an object without it.
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with self.assertRaises(IntegrityError):
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with transaction.atomic():
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Employee.objects.create(first_name="Tom", last_name="Smith")
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