95 lines
3.4 KiB
Python
95 lines
3.4 KiB
Python
from django.test import TestCase
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from .models import Person, Number, SSN, Group
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from mergeobject import merge, OneToOneConflict, KEEP, DELETE
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class MergeTests(TestCase):
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def setUp(self):
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self.a = Person.objects.create(name='alf')
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self.b = Person.objects.create(name='bee')
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self.g = Group.objects.create(name='Team Awesome')
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def test_same_class(self):
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with self.assertRaises(ValueError):
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merge(self.a, self.g)
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def test_same_object(self):
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with self.assertRaises(ValueError):
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# make sure this doesn't rely on is
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merge(self.a, Person.objects.get(name=self.a.name))
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def test_fk_simple(self):
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Number.objects.create(person=self.a, number='555-1111')
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Number.objects.create(person=self.a, number='555-1112')
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merge(self.a, self.b)
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# move FKs pointing at A to C
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assert self.a.numbers.count() == 0
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assert self.b.numbers.count() == 2
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assert Number.objects.count() == 2
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def test_fk_existing(self):
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Number.objects.create(person=self.a, number='555-1112')
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Number.objects.create(person=self.b, number='555-1113')
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merge(self.a, self.b)
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# everything now on B
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assert self.a.numbers.count() == 0
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assert self.b.numbers.count() == 2
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assert Number.objects.count() == 2
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def test_one2one_simple(self):
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SSN.objects.create(person=self.a, number='1')
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merge(self.a, self.b)
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# move FKs pointing at A to B
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#TODO: assert self.a.ssn is None
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assert Person.objects.get(pk=self.b.pk).ssn.number == '1'
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assert SSN.objects.count() == 1
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def test_one2one_conflict(self):
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SSN.objects.create(person=self.a, number='1')
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SSN.objects.create(person=self.b, number='2')
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with self.assertRaises(OneToOneConflict):
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merge(self.a, self.b)
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def test_one2one_conflict_keep(self):
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SSN.objects.create(person=self.a, number='1')
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SSN.objects.create(person=self.b, number='2')
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merge(self.a, self.b, KEEP)
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assert Person.objects.get(pk=self.a.pk).ssn.number == '1'
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assert Person.objects.get(pk=self.b.pk).ssn.number == '2'
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def test_one2one_conflict_delete(self):
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SSN.objects.create(person=self.a, number='1')
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SSN.objects.create(person=self.b, number='2')
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merge(self.a, self.b, DELETE)
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assert Person.objects.get(pk=self.b.pk).ssn.number == '1'
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assert SSN.objects.count() == 1
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def test_many2many_simple(self):
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self.g.people.add(self.a)
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merge(self.a, self.b)
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# A's membership in G has been moved to B
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assert self.g.people.get().name == self.b.name
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assert self.a.groups.all().count() == 0
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assert self.b.groups.all().count() == 1
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def test_many2many_redundant(self):
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self.g.people.add(self.a)
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self.g.people.add(self.b)
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merge(self.a, self.b)
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# A's membership in G is redundant with B's
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assert self.g.people.all().count() == 1
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assert self.a.groups.all().count() == 0
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assert self.b.groups.all().count() == 1
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def test_many2many_same_class(self):
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f = Person.objects.create(name='friend')
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self.a.friends.add(f)
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merge(self.a, self.b)
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assert self.a.friends.all().count() == 0
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assert self.b.friends.get().name == f.name
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assert f.friends.get().name == self.b.name
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