Question

I defined a simple Document, like this:

class Company(Document):
    screen_name = StringField(max_length=100, required=True, unique=True)
    official_name = StringField(required=False)

    meta = {
        'indexes': [{'fields': 'screen_name', 'unique': True}]
    }

but when I am writing a test

@use_tdb
def test_company3():
    """ test company2 """
    company = Company(screen_name='asdasd')
    company.save()
    company = Company(screen_name='asdasd')
    with nt.assert_raises(OperationError):
        company.save()
        pprint([(x.id, x.screen_name,) for x in Company.objects.all()])

It actually saves both of them. And I see in output:

[(ObjectId('4f719f915c121a21ad000003'), u'asdasd'),
 (ObjectId('4f719f915c121a21ad000004'), u'asdasd')]

Any ideas, what I’ve done wrong?

Thanks

Answer 1

That is may be required drop_collection.

def test_company3():
    """ test company2 """
    Company.drop_collection()
    company = Company(screen_name='asdasd')
    company.save()
    company = Company(screen_name='asdasd')
    with nt.assert_raises(OperationError):
        company.save()
    pprint([(x.id, x.screen_name,) for x in Company.objects.all()])

See this tests. Mongoengine is all tests is passed.
https://github.com/hmarr/mongoengine/blob/master/tests/document.py#L875

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