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Fixed #24427 -- Stopped writing migration files in dry run mode when merging. 

Also added display of migration to stdout when verbosity=3.
This commit is contained in:
John Giannelos 2015-03-03 00:13:14 +02:00 committed by Tim Graham
parent 818182b514
commit 8758a63ddb
3 changed files with 62 additions and 4 deletions
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11
django/core/management/commands/makemigrations.py
View File

@ -239,7 +239,18 @@ class Command(BaseCommand):
})
new_migration = subclass("%04i_merge" % (biggest_number + 1), app_label)
writer = MigrationWriter(new_migration)
if not self.dry_run:
# Write the merge migrations file to the disk
with open(writer.path, "wb") as fh:
fh.write(writer.as_string())
if self.verbosity > 0:
self.stdout.write("\nCreated new merge migration %s" % writer.path)
elif self.verbosity == 3:
# Alternatively, makemigrations --merge --dry-run --verbosity 3
# will output the merge migrations to stdout rather than saving
# the file to the disk.
self.stdout.write(self.style.MIGRATE_HEADING(
"Full merge migrations file '%s':" % writer.filename) + "\n"
)
self.stdout.write("%s\n" % writer.as_string())

4
docs/releases/1.7.7.txt
View File

@ -12,3 +12,7 @@ Bugfixes
* Fixed renaming of classes in migrations where renaming a subclass would
cause incorrect state to be recorded for objects that referenced the
superclass (:ticket:`24354`).
* Stopped writing migration files in dry run mode when merging migration
conflicts. When ``makemigrations --merge`` is called with ``verbosity=3`` the
migration file is written to ``stdout`` (:ticket: `24427`).

43
tests/migrations/test_commands.py
View File

@ -620,6 +620,49 @@ class MakeMigrationsTests(MigrationTestBase):
self.assertIn("Branch 0002_conflicting_second", output)
self.assertIn("Created new merge migration", output)
def test_makemigration_merge_dry_run(self):
"""
Makes sure that makemigrations respects --dry-run option when fixing
migration conflicts (#24427).
"""
out = six.StringIO()
with self.temporary_migration_module(module="migrations.test_migrations_conflict") as migration_dir:
call_command("makemigrations", "migrations", dry_run=True, merge=True, interactive=False, stdout=out)
merge_file = os.path.join(migration_dir, '0003_merge.py')
self.assertFalse(os.path.exists(merge_file))
output = force_text(out.getvalue())
self.assertIn("Merging migrations", output)
self.assertIn("Branch 0002_second", output)
self.assertIn("Branch 0002_conflicting_second", output)
self.assertNotIn("Created new merge migration", output)
def test_makemigration_merge_dry_run_verbosity_3(self):
"""
Makes sure that `makemigrations --merge --dry-run` writes the merge
migration file to stdout with `verbosity == 3` (#24427).
"""
out = six.StringIO()
with self.temporary_migration_module(module="migrations.test_migrations_conflict") as migration_dir:
call_command("makemigrations", "migrations", dry_run=True, merge=True, interactive=False,
stdout=out, verbosity=3)
merge_file = os.path.join(migration_dir, '0003_merge.py')
self.assertFalse(os.path.exists(merge_file))
output = force_text(out.getvalue())
self.assertIn("Merging migrations", output)
self.assertIn("Branch 0002_second", output)
self.assertIn("Branch 0002_conflicting_second", output)
self.assertNotIn("Created new merge migration", output)
# Additional output caused by verbosity 3
# The complete merge migration file that would be written
self.assertIn("# -*- coding: utf-8 -*-", output)
self.assertIn("class Migration(migrations.Migration):", output)
self.assertIn("dependencies = [", output)
self.assertIn("('migrations', '0002_second')", output)
self.assertIn("('migrations', '0002_conflicting_second')", output)
self.assertIn("operations = [", output)
self.assertIn("]", output)
def test_makemigrations_dry_run(self):
"""
Ticket #22676 -- `makemigrations --dry-run` should not ask for defaults.