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Migrated custom_pk doctests. Thanks to Alex Gaynor.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@13776 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Russell Keith-Magee
183
tests/modeltests/custom_pk/tests.py
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183
tests/modeltests/custom_pk/tests.py
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# -*- coding: utf-8 -*-
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from django.conf import settings
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from django.db import DEFAULT_DB_ALIAS, transaction, IntegrityError
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from django.test import TestCase
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from models import Employee, Business, Bar, Foo
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class CustomPKTests(TestCase):
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def test_custom_pk(self):
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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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self.assertQuerysetEqual(
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Employee.objects.all(), [
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"Dan Jones",
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],
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unicode
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)
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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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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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unicode
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)
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self.assertEqual(Employee.objects.get(pk=123), dan)
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self.assertEqual(Employee.objects.get(pk=456), fran)
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self.assertRaises(Employee.DoesNotExist,
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lambda: Employee.objects.get(pk=42)
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)
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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), dan)
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# pk can be used as a substitute for the primary key.
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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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unicode
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)
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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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# Fran got married and changed her last name.
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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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unicode
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)
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emps = Employee.objects.in_bulk([123, 456])
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self.assertEqual(emps[123], dan)
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b = Business.objects.create(name="Sears")
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b.employees.add(dan, fran)
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self.assertQuerysetEqual(
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b.employees.all(), [
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"Dan Jones",
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"Fran Jones",
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],
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unicode
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)
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self.assertQuerysetEqual(
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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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self.assertEqual(Business.objects.in_bulk(["Sears"]), {
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"Sears": b,
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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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# Queries across tables, involving primary key
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self.assertQuerysetEqual(
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Employee.objects.filter(business__name="Sears"), [
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"Dan Jones",
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"Fran Jones",
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],
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unicode,
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)
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self.assertQuerysetEqual(
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Employee.objects.filter(business__pk="Sears"), [
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"Dan Jones",
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"Fran Jones",
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],
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unicode,
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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_unicode_pk(self):
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# Primary key may be unicode string
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bus = Business.objects.create(name=u'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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e = Employee.objects.create(
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employee_code=123, first_name="Frank", last_name="Jones"
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)
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sid = transaction.savepoint()
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self.assertRaises(IntegrityError,
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Employee.objects.create, employee_code=123, first_name="Fred", last_name="Jones"
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)
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transaction.savepoint_rollback(sid)
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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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# FIXME: This still doesn't work, but will require some changes in
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# get_db_prep_lookup to fix it.
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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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if settings.DATABASES[DEFAULT_DB_ALIAS]['ENGINE'] != 'django.db.backends.sqlite3':
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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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sid = transaction.savepoint()
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self.assertRaises(IntegrityError,
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Employee.objects.create, first_name="Tom", last_name="Smith"
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)
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transaction.savepoint_rollback(sid)
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