id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
23090	Squashed migrations not used always when testing	anonymous	Andrew Godwin	"I've squashed migrations in my apps, did some fixing and to test them on clean database I was just running tests. When having old and squashes in migrations folders some part of django-admin test ... resulted in KeyErrors like the one below. Some did pass and used the squashed migrations.

{{{
Traceback (most recent call last):
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2-5/lib/python3.3/site-packages/coverage/execfile.py"", line 104, in run_python_file
    exec_code_object(code, main_mod.__dict__)
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2-5/lib/python3.3/site-packages/coverage/backward.py"", line 93, in exec_code_object
    exec(code, global_map)
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2/bin/django-admin.py"", line 5, in <module>
    management.execute_from_command_line()
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2-5/lib/python3.3/site-packages/django/core/management/__init__.py"", line 385, in execute_from_command_line
    utility.execute()
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2-5/lib/python3.3/site-packages/django/core/management/__init__.py"", line 377, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2-5/lib/python3.3/site-packages/django/core/management/commands/test.py"", line 50, in run_from_argv
    super(Command, self).run_from_argv(argv)
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2-5/lib/python3.3/site-packages/django/core/management/base.py"", line 288, in run_from_argv
    self.execute(*args, **options.__dict__)
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2-5/lib/python3.3/site-packages/django/core/management/commands/test.py"", line 71, in execute
    super(Command, self).execute(*args, **options)
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2-5/lib/python3.3/site-packages/django/core/management/base.py"", line 337, in execute
    output = self.handle(*args, **options)
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2-5/lib/python3.3/site-packages/django_jenkins/management/commands/jenkins.py"", line 98, in handle
    failures = test_runner.run_tests(test_labels)
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2-5/lib/python3.3/site-packages/django/test/runner.py"", line 147, in run_tests
    old_config = self.setup_databases()
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2-5/lib/python3.3/site-packages/django_jenkins/runner.py"", line 127, in setup_databases
    return super(CITestSuiteRunner, self).setup_databases()
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2-5/lib/python3.3/site-packages/django/test/runner.py"", line 109, in setup_databases
    return setup_databases(self.verbosity, self.interactive, **kwargs)
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2-5/lib/python3.3/site-packages/django/test/runner.py"", line 299, in setup_databases
    serialize=connection.settings_dict.get(""TEST_SERIALIZE"", True),
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2-5/lib/python3.3/site-packages/django/db/backends/creation.py"", line 374, in create_test_db
    test_flush=True,
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2-5/lib/python3.3/site-packages/django/core/management/__init__.py"", line 115, in call_command
    return klass.execute(*args, **defaults)
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2-5/lib/python3.3/site-packages/django/core/management/base.py"", line 337, in execute
    output = self.handle(*args, **options)
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2-5/lib/python3.3/site-packages/django/core/management/commands/migrate.py"", line 63, in handle
    executor = MigrationExecutor(connection, self.migration_progress_callback)
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2-5/lib/python3.3/site-packages/django/db/migrations/executor.py"", line 16, in __init__
    self.loader = MigrationLoader(self.connection)
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2-5/lib/python3.3/site-packages/django/db/migrations/loader.py"", line 48, in __init__
    self.build_graph()
  File ""/tmp/buku-test-virtualenv-908c498ca6f66e231f0be70fcb6b51b2-5/lib/python3.3/site-packages/django/db/migrations/loader.py"", line 216, in build_graph
    normal[child_key].dependencies.remove(replaced)
KeyError: ('buku_notification', '0003_auto_20140424_1540')
}}}


Where buku_notification.0003_auto_20140424_1540 is one of migrations that got squashed, it listed in ""replaces"" of its squash migration. I can't reproduce it with my second commit that deleted all migrations that got squashed."	Bug	closed	Migrations	1.7-rc-1	Release blocker	fixed		Simon Charette	Accepted	0	0	0	0	0	0