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e94d293504
other database backends, but the exception classes should still be the same. This commit changes the way the tests check for specific database errors to be more portable between implementations. It's possible these tests will still fail if, e.g., Oracle doesn't raise IntegrityError (but raises DatabaseError) when we except it to, but we can cross that bridge if and when it appears. git-svn-id: http://code.djangoproject.com/svn/django/trunk@8450 bcc190cf-cafb-0310-a4f2-bffc1f526a37
65 lines
1.7 KiB
Python
65 lines
1.7 KiB
Python
"""
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Tests for forcing insert and update queries (instead of Django's normal
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automatic behaviour).
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"""
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from django.db import models, transaction, IntegrityError
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class Counter(models.Model):
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name = models.CharField(max_length = 10)
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value = models.IntegerField()
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class WithCustomPK(models.Model):
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name = models.IntegerField(primary_key=True)
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value = models.IntegerField()
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__test__ = {"API_TESTS": """
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>>> c = Counter.objects.create(name="one", value=1)
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# The normal case
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>>> c.value = 2
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>>> c.save()
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# Same thing, via an update
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>>> c.value = 3
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>>> c.save(force_update=True)
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# Won't work because force_update and force_insert are mutually exclusive
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>>> c.value = 4
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>>> c.save(force_insert=True, force_update=True)
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Traceback (most recent call last):
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...
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ValueError: Cannot force both insert and updating in model saving.
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# Try to update something that doesn't have a primary key in the first place.
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>>> c1 = Counter(name="two", value=2)
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>>> c1.save(force_update=True)
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Traceback (most recent call last):
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...
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ValueError: Cannot force an update in save() with no primary key.
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>>> c1.save(force_insert=True)
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# Won't work because we can't insert a pk of the same value.
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>>> sid = transaction.savepoint()
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>>> c.value = 5
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>>> try:
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... c.save(force_insert=True)
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... except Exception, e:
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... if isinstance(e, IntegrityError):
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... print "Pass"
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... else:
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... print "Fail with %s" % type(e)
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Pass
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>>> transaction.savepoint_rollback(sid)
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# Trying to update should still fail, even with manual primary keys, if the
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# data isn't in the database already.
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>>> obj = WithCustomPK(name=1, value=1)
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>>> obj.save(force_update=True)
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Traceback (most recent call last):
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...
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DatabaseError: ...
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"""
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}
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