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Refs #35038 -- Reduced CreateModel/AlterConstraint operations when optimizing migrations.
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Jacob Walls 2025-06-19 06:22:23 -04:00 • committed by GitHub
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48
tests/migrations/test_optimizer.py
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@ -1434,6 +1434,54 @@ class OptimizerTests(OptimizerTestBase):
],
)
def test_create_model_alter_constraint(self):
original_constraint = models.CheckConstraint(
condition=models.Q(weight__gt=0), name="pony_weight_gt_0"
)
altered_constraint = models.CheckConstraint(
condition=models.Q(weight__gt=0),
name="pony_weight_gt_0",
violation_error_message="incorrect weight",
)
self.assertOptimizesTo(
[
migrations.CreateModel(
name="Pony",
fields=[
("weight", models.IntegerField()),
],
options={
"constraints": [
original_constraint,
models.UniqueConstraint(
"weight", name="pony_weight_unique"
),
],
},
),
migrations.AlterConstraint(
"Pony", "pony_weight_gt_0", altered_constraint
),
],
[
migrations.CreateModel(
name="Pony",
fields=[
("weight", models.IntegerField()),
],
options={
"constraints": [
models.UniqueConstraint(
"weight",
name="pony_weight_unique",
),
altered_constraint,
]
},
),
],
)
def test_create_model_remove_constraint(self):
self.assertOptimizesTo(
[