267 lines
12 KiB
Python
267 lines
12 KiB
Python
from django.contrib.postgres.aggregates import (
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ArrayAgg, BitAnd, BitOr, BoolAnd, BoolOr, Corr, CovarPop, RegrAvgX,
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RegrAvgY, RegrCount, RegrIntercept, RegrR2, RegrSlope, RegrSXX, RegrSXY,
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RegrSYY, StatAggregate, StringAgg,
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)
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from django.db.models.expressions import F, Value
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from django.test.utils import Approximate
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from . import PostgreSQLTestCase
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from .models import AggregateTestModel, StatTestModel
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class TestGeneralAggregate(PostgreSQLTestCase):
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@classmethod
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def setUpTestData(cls):
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AggregateTestModel.objects.create(boolean_field=True, char_field='Foo1', integer_field=0)
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AggregateTestModel.objects.create(boolean_field=False, char_field='Foo2', integer_field=1)
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AggregateTestModel.objects.create(boolean_field=False, char_field='Foo3', integer_field=2)
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AggregateTestModel.objects.create(boolean_field=True, char_field='Foo4', integer_field=0)
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def test_array_agg_charfield(self):
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values = AggregateTestModel.objects.aggregate(arrayagg=ArrayAgg('char_field'))
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self.assertEqual(values, {'arrayagg': ['Foo1', 'Foo2', 'Foo3', 'Foo4']})
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def test_array_agg_integerfield(self):
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values = AggregateTestModel.objects.aggregate(arrayagg=ArrayAgg('integer_field'))
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self.assertEqual(values, {'arrayagg': [0, 1, 2, 0]})
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def test_array_agg_booleanfield(self):
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values = AggregateTestModel.objects.aggregate(arrayagg=ArrayAgg('boolean_field'))
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self.assertEqual(values, {'arrayagg': [True, False, False, True]})
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def test_array_agg_empty_result(self):
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AggregateTestModel.objects.all().delete()
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values = AggregateTestModel.objects.aggregate(arrayagg=ArrayAgg('char_field'))
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self.assertEqual(values, {'arrayagg': []})
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values = AggregateTestModel.objects.aggregate(arrayagg=ArrayAgg('integer_field'))
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self.assertEqual(values, {'arrayagg': []})
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values = AggregateTestModel.objects.aggregate(arrayagg=ArrayAgg('boolean_field'))
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self.assertEqual(values, {'arrayagg': []})
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def test_bit_and_general(self):
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values = AggregateTestModel.objects.filter(
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integer_field__in=[0, 1]).aggregate(bitand=BitAnd('integer_field'))
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self.assertEqual(values, {'bitand': 0})
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def test_bit_and_on_only_true_values(self):
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values = AggregateTestModel.objects.filter(
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integer_field=1).aggregate(bitand=BitAnd('integer_field'))
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self.assertEqual(values, {'bitand': 1})
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def test_bit_and_on_only_false_values(self):
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values = AggregateTestModel.objects.filter(
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integer_field=0).aggregate(bitand=BitAnd('integer_field'))
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self.assertEqual(values, {'bitand': 0})
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def test_bit_and_empty_result(self):
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AggregateTestModel.objects.all().delete()
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values = AggregateTestModel.objects.aggregate(bitand=BitAnd('integer_field'))
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self.assertEqual(values, {'bitand': None})
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def test_bit_or_general(self):
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values = AggregateTestModel.objects.filter(
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integer_field__in=[0, 1]).aggregate(bitor=BitOr('integer_field'))
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self.assertEqual(values, {'bitor': 1})
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def test_bit_or_on_only_true_values(self):
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values = AggregateTestModel.objects.filter(
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integer_field=1).aggregate(bitor=BitOr('integer_field'))
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self.assertEqual(values, {'bitor': 1})
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def test_bit_or_on_only_false_values(self):
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values = AggregateTestModel.objects.filter(
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integer_field=0).aggregate(bitor=BitOr('integer_field'))
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self.assertEqual(values, {'bitor': 0})
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def test_bit_or_empty_result(self):
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AggregateTestModel.objects.all().delete()
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values = AggregateTestModel.objects.aggregate(bitor=BitOr('integer_field'))
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self.assertEqual(values, {'bitor': None})
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def test_bool_and_general(self):
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values = AggregateTestModel.objects.aggregate(booland=BoolAnd('boolean_field'))
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self.assertEqual(values, {'booland': False})
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def test_bool_and_empty_result(self):
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AggregateTestModel.objects.all().delete()
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values = AggregateTestModel.objects.aggregate(booland=BoolAnd('boolean_field'))
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self.assertEqual(values, {'booland': None})
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def test_bool_or_general(self):
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values = AggregateTestModel.objects.aggregate(boolor=BoolOr('boolean_field'))
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self.assertEqual(values, {'boolor': True})
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def test_bool_or_empty_result(self):
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AggregateTestModel.objects.all().delete()
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values = AggregateTestModel.objects.aggregate(boolor=BoolOr('boolean_field'))
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self.assertEqual(values, {'boolor': None})
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def test_string_agg_requires_delimiter(self):
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with self.assertRaises(TypeError):
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AggregateTestModel.objects.aggregate(stringagg=StringAgg('char_field'))
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def test_string_agg_charfield(self):
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values = AggregateTestModel.objects.aggregate(stringagg=StringAgg('char_field', delimiter=';'))
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self.assertEqual(values, {'stringagg': 'Foo1;Foo2;Foo3;Foo4'})
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def test_string_agg_empty_result(self):
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AggregateTestModel.objects.all().delete()
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values = AggregateTestModel.objects.aggregate(stringagg=StringAgg('char_field', delimiter=';'))
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self.assertEqual(values, {'stringagg': ''})
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class TestStatisticsAggregate(PostgreSQLTestCase):
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@classmethod
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def setUpTestData(cls):
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StatTestModel.objects.create(
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int1=1,
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int2=3,
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related_field=AggregateTestModel.objects.create(integer_field=0),
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)
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StatTestModel.objects.create(
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int1=2,
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int2=2,
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related_field=AggregateTestModel.objects.create(integer_field=1),
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)
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StatTestModel.objects.create(
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int1=3,
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int2=1,
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related_field=AggregateTestModel.objects.create(integer_field=2),
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)
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# Tests for base class (StatAggregate)
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def test_missing_arguments_raises_exception(self):
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with self.assertRaisesMessage(ValueError, 'Both y and x must be provided.'):
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StatAggregate(x=None, y=None)
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def test_correct_source_expressions(self):
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func = StatAggregate(x='test', y=13)
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self.assertIsInstance(func.source_expressions[0], Value)
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self.assertIsInstance(func.source_expressions[1], F)
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def test_alias_is_required(self):
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class SomeFunc(StatAggregate):
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function = 'TEST'
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with self.assertRaisesMessage(TypeError, 'Complex aggregates require an alias'):
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StatTestModel.objects.aggregate(SomeFunc(y='int2', x='int1'))
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# Test aggregates
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def test_corr_general(self):
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values = StatTestModel.objects.aggregate(corr=Corr(y='int2', x='int1'))
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self.assertEqual(values, {'corr': -1.0})
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def test_corr_empty_result(self):
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StatTestModel.objects.all().delete()
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values = StatTestModel.objects.aggregate(corr=Corr(y='int2', x='int1'))
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self.assertEqual(values, {'corr': None})
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def test_covar_pop_general(self):
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values = StatTestModel.objects.aggregate(covarpop=CovarPop(y='int2', x='int1'))
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self.assertEqual(values, {'covarpop': Approximate(-0.66, places=1)})
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def test_covar_pop_empty_result(self):
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StatTestModel.objects.all().delete()
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values = StatTestModel.objects.aggregate(covarpop=CovarPop(y='int2', x='int1'))
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self.assertEqual(values, {'covarpop': None})
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def test_covar_pop_sample(self):
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values = StatTestModel.objects.aggregate(covarpop=CovarPop(y='int2', x='int1', sample=True))
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self.assertEqual(values, {'covarpop': -1.0})
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def test_covar_pop_sample_empty_result(self):
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StatTestModel.objects.all().delete()
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values = StatTestModel.objects.aggregate(covarpop=CovarPop(y='int2', x='int1', sample=True))
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self.assertEqual(values, {'covarpop': None})
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def test_regr_avgx_general(self):
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values = StatTestModel.objects.aggregate(regravgx=RegrAvgX(y='int2', x='int1'))
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self.assertEqual(values, {'regravgx': 2.0})
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def test_regr_avgx_empty_result(self):
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StatTestModel.objects.all().delete()
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values = StatTestModel.objects.aggregate(regravgx=RegrAvgX(y='int2', x='int1'))
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self.assertEqual(values, {'regravgx': None})
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def test_regr_avgy_general(self):
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values = StatTestModel.objects.aggregate(regravgy=RegrAvgY(y='int2', x='int1'))
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self.assertEqual(values, {'regravgy': 2.0})
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def test_regr_avgy_empty_result(self):
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StatTestModel.objects.all().delete()
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values = StatTestModel.objects.aggregate(regravgy=RegrAvgY(y='int2', x='int1'))
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self.assertEqual(values, {'regravgy': None})
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def test_regr_count_general(self):
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values = StatTestModel.objects.aggregate(regrcount=RegrCount(y='int2', x='int1'))
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self.assertEqual(values, {'regrcount': 3})
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def test_regr_count_empty_result(self):
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StatTestModel.objects.all().delete()
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values = StatTestModel.objects.aggregate(regrcount=RegrCount(y='int2', x='int1'))
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self.assertEqual(values, {'regrcount': 0})
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def test_regr_intercept_general(self):
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values = StatTestModel.objects.aggregate(regrintercept=RegrIntercept(y='int2', x='int1'))
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self.assertEqual(values, {'regrintercept': 4})
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def test_regr_intercept_empty_result(self):
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StatTestModel.objects.all().delete()
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values = StatTestModel.objects.aggregate(regrintercept=RegrIntercept(y='int2', x='int1'))
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self.assertEqual(values, {'regrintercept': None})
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def test_regr_r2_general(self):
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values = StatTestModel.objects.aggregate(regrr2=RegrR2(y='int2', x='int1'))
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self.assertEqual(values, {'regrr2': 1})
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def test_regr_r2_empty_result(self):
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StatTestModel.objects.all().delete()
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values = StatTestModel.objects.aggregate(regrr2=RegrR2(y='int2', x='int1'))
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self.assertEqual(values, {'regrr2': None})
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def test_regr_slope_general(self):
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values = StatTestModel.objects.aggregate(regrslope=RegrSlope(y='int2', x='int1'))
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self.assertEqual(values, {'regrslope': -1})
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def test_regr_slope_empty_result(self):
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StatTestModel.objects.all().delete()
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values = StatTestModel.objects.aggregate(regrslope=RegrSlope(y='int2', x='int1'))
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self.assertEqual(values, {'regrslope': None})
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def test_regr_sxx_general(self):
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values = StatTestModel.objects.aggregate(regrsxx=RegrSXX(y='int2', x='int1'))
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self.assertEqual(values, {'regrsxx': 2.0})
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def test_regr_sxx_empty_result(self):
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StatTestModel.objects.all().delete()
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values = StatTestModel.objects.aggregate(regrsxx=RegrSXX(y='int2', x='int1'))
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self.assertEqual(values, {'regrsxx': None})
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def test_regr_sxy_general(self):
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values = StatTestModel.objects.aggregate(regrsxy=RegrSXY(y='int2', x='int1'))
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self.assertEqual(values, {'regrsxy': -2.0})
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def test_regr_sxy_empty_result(self):
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StatTestModel.objects.all().delete()
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values = StatTestModel.objects.aggregate(regrsxy=RegrSXY(y='int2', x='int1'))
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self.assertEqual(values, {'regrsxy': None})
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def test_regr_syy_general(self):
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values = StatTestModel.objects.aggregate(regrsyy=RegrSYY(y='int2', x='int1'))
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self.assertEqual(values, {'regrsyy': 2.0})
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def test_regr_syy_empty_result(self):
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StatTestModel.objects.all().delete()
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values = StatTestModel.objects.aggregate(regrsyy=RegrSYY(y='int2', x='int1'))
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self.assertEqual(values, {'regrsyy': None})
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def test_regr_avgx_with_related_obj_and_number_as_argument(self):
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"""
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This is more complex test to check if JOIN on field and
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number as argument works as expected.
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"""
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values = StatTestModel.objects.aggregate(complex_regravgx=RegrAvgX(y=5, x='related_field__integer_field'))
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self.assertEqual(values, {'complex_regravgx': 1.0})
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