60 lines
1.9 KiB
Python
60 lines
1.9 KiB
Python
import sqlalchemy as sa
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from sqlalchemy_utils.aggregates import aggregated
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from tests import TestCase
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class TestAggregatedWithColumnAlias(TestCase):
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def create_models(self):
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class Thread(self.Base):
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__tablename__ = 'thread'
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id = sa.Column(sa.Integer, primary_key=True)
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@aggregated(
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'comments',
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sa.Column('_comment_count', sa.Integer, default=0)
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)
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def comment_count(self):
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return sa.func.count('1')
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comments = sa.orm.relationship('Comment', backref='thread')
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class Comment(self.Base):
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__tablename__ = 'comment'
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id = sa.Column(sa.Integer, primary_key=True)
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thread_id = sa.Column(sa.Integer, sa.ForeignKey('thread.id'))
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self.Thread = Thread
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self.Comment = Comment
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def test_assigns_aggregates_on_insert(self):
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thread = self.Thread()
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self.session.add(thread)
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comment = self.Comment(thread=thread)
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self.session.add(comment)
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self.session.commit()
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self.session.refresh(thread)
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assert thread.comment_count == 1
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def test_assigns_aggregates_on_separate_insert(self):
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thread = self.Thread()
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self.session.add(thread)
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self.session.commit()
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comment = self.Comment(thread=thread)
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self.session.add(comment)
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self.session.commit()
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self.session.refresh(thread)
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assert thread.comment_count == 1
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def test_assigns_aggregates_on_delete(self):
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thread = self.Thread()
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self.session.add(thread)
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self.session.commit()
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comment = self.Comment(thread=thread)
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self.session.add(comment)
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self.session.commit()
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self.session.delete(comment)
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self.session.commit()
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self.session.refresh(thread)
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assert thread.comment_count == 0
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