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Code Issues 32 Releases Wiki Activity

Add more stringent M2M tests and fix the bug they exposed

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This commit is contained in:
Andrew Godwin
2013-08-19 13:50:26 +01:00
parent 5b522cd85a
commit 52edc16086
4 changed files with 32 additions and 17 deletions
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9
tests/migrations/test_operations.py
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@@ -116,7 +116,7 @@ class OperationTests(MigrationTestBase):
"""
project_state = self.set_up_test_model("test_adflmm", second_model=True)
# Test the state alteration
operation = migrations.AddField("Pony", "stables", models.ManyToManyField("Stable"))
operation = migrations.AddField("Pony", "stables", models.ManyToManyField("Stable", related_name="ponies"))
new_state = project_state.clone()
operation.state_forwards("test_adflmm", new_state)
self.assertEqual(len(new_state.models["test_adflmm", "pony"].fields), 4)
@@ -126,6 +126,13 @@ class OperationTests(MigrationTestBase):
operation.database_forwards("test_adflmm", editor, project_state, new_state)
self.assertTableExists("test_adflmm_pony_stables")
self.assertColumnNotExists("test_adflmm_pony", "stables")
# Make sure the M2M field actually works
app_cache = new_state.render()
Pony = app_cache.get_model("test_adflmm", "Pony")
p = Pony.objects.create(pink=False, weight=4.55)
p.stables.create()
self.assertEqual(p.stables.count(), 1)
p.stables.all().delete()
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_adflmm", editor, new_state, project_state)