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Code Issues 32 Releases Wiki Activity

Refs #34534 -- Reduced constraint operations with Meta.constraints when optimizing migrations.

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This commit is contained in:
Ben Cail
2024-01-31 15:25:30 -05:00
committed by Mariusz Felisiak
parent 9c5e382b98
commit 8b7ddd1b62
3 changed files with 115 additions and 9 deletions
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63
tests/migrations/test_optimizer.py
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@@ -1326,3 +1326,66 @@ class OptimizerTests(SimpleTestCase):
),
],
)
def test_create_model_add_constraint(self):
gt_constraint = models.CheckConstraint(
check=models.Q(weight__gt=0), name="pony_weight_gt_0"
)
self.assertOptimizesTo(
[
migrations.CreateModel(
name="Pony",
fields=[
("weight", models.IntegerField()),
],
),
migrations.AddConstraint("Pony", gt_constraint),
],
[
migrations.CreateModel(
name="Pony",
fields=[
("weight", models.IntegerField()),
],
options={"constraints": [gt_constraint]},
),
],
)
def test_create_model_remove_constraint(self):
self.assertOptimizesTo(
[
migrations.CreateModel(
name="Pony",
fields=[
("weight", models.IntegerField()),
],
options={
"constraints": [
models.CheckConstraint(
check=models.Q(weight__gt=0), name="pony_weight_gt_0"
),
models.UniqueConstraint(
"weight", name="pony_weight_unique"
),
],
},
),
migrations.RemoveConstraint("Pony", "pony_weight_gt_0"),
],
[
migrations.CreateModel(
name="Pony",
fields=[
("weight", models.IntegerField()),
],
options={
"constraints": [
models.UniqueConstraint(
"weight", name="pony_weight_unique"
),
]
},
),
],
)