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import os
import unittest
from alembic import command, util
from alembic.script import ScriptDirectory
from . import clear_staging_env, staging_env, \
_sqlite_testing_config, sqlite_db, eq_, write_script, \
assert_raises_message
class VersioningTest(unittest.TestCase):
sourceless = False
def test_001_revisions(self):
global a, b, c
a = util.rev_id()
b = util.rev_id()
c = util.rev_id()
script = ScriptDirectory.from_config(self.cfg)
script.generate_revision(a, None, refresh=True)
write_script(script, a, """
revision = '%s'
down_revision = None
from alembic import op
def upgrade():
op.execute("CREATE TABLE foo(id integer)")
def downgrade():
op.execute("DROP TABLE foo")
""" % a, sourceless=self.sourceless)
script.generate_revision(b, None, refresh=True)
write_script(script, b, """
revision = '%s'
down_revision = '%s'
from alembic import op
def upgrade():
op.execute("CREATE TABLE bar(id integer)")
def downgrade():
op.execute("DROP TABLE bar")
""" % (b, a), sourceless=self.sourceless)
script.generate_revision(c, None, refresh=True)
write_script(script, c, """
revision = '%s'
down_revision = '%s'
from alembic import op
def upgrade():
op.execute("CREATE TABLE bat(id integer)")
def downgrade():
op.execute("DROP TABLE bat")
""" % (c, b), sourceless=self.sourceless)
def test_002_upgrade(self):
command.upgrade(self.cfg, c)
db = sqlite_db()
assert db.dialect.has_table(db.connect(), 'foo')
assert db.dialect.has_table(db.connect(), 'bar')
assert db.dialect.has_table(db.connect(), 'bat')
def test_003_downgrade(self):
command.downgrade(self.cfg, a)
db = sqlite_db()
assert db.dialect.has_table(db.connect(), 'foo')
assert not db.dialect.has_table(db.connect(), 'bar')
assert not db.dialect.has_table(db.connect(), 'bat')
def test_004_downgrade(self):
command.downgrade(self.cfg, 'base')
db = sqlite_db()
assert not db.dialect.has_table(db.connect(), 'foo')
assert not db.dialect.has_table(db.connect(), 'bar')
assert not db.dialect.has_table(db.connect(), 'bat')
def test_005_upgrade(self):
command.upgrade(self.cfg, b)
db = sqlite_db()
assert db.dialect.has_table(db.connect(), 'foo')
assert db.dialect.has_table(db.connect(), 'bar')
assert not db.dialect.has_table(db.connect(), 'bat')
def test_006_upgrade_again(self):
command.upgrade(self.cfg, b)
# TODO: test some invalid movements
@classmethod
def setup_class(cls):
cls.env = staging_env(sourceless=cls.sourceless)
cls.cfg = _sqlite_testing_config(sourceless=cls.sourceless)
@classmethod
def teardown_class(cls):
clear_staging_env()
class VersionNameTemplateTest(unittest.TestCase):
def setUp(self):
self.env = staging_env()
self.cfg = _sqlite_testing_config()
def tearDown(self):
clear_staging_env()
def test_option(self):
self.cfg.set_main_option("file_template", "myfile_%%(slug)s")
script = ScriptDirectory.from_config(self.cfg)
a = util.rev_id()
script.generate_revision(a, "some message", refresh=True)
write_script(script, a, """
revision = '%s'
down_revision = None
from alembic import op
def upgrade():
op.execute("CREATE TABLE foo(id integer)")
def downgrade():
op.execute("DROP TABLE foo")
""" % a)
script = ScriptDirectory.from_config(self.cfg)
rev = script._get_rev(a)
eq_(rev.revision, a)
eq_(os.path.basename(rev.path), "myfile_some_message.py")
def test_lookup_legacy(self):
self.cfg.set_main_option("file_template", "%%(rev)s")
script = ScriptDirectory.from_config(self.cfg)
a = util.rev_id()
script.generate_revision(a, None, refresh=True)
write_script(script, a, """
down_revision = None
from alembic import op
def upgrade():
op.execute("CREATE TABLE foo(id integer)")
def downgrade():
op.execute("DROP TABLE foo")
""")
script = ScriptDirectory.from_config(self.cfg)
rev = script._get_rev(a)
eq_(rev.revision, a)
eq_(os.path.basename(rev.path), "%s.py" % a)
def test_error_on_new_with_missing_revision(self):
self.cfg.set_main_option("file_template", "%%(slug)s_%%(rev)s")
script = ScriptDirectory.from_config(self.cfg)
a = util.rev_id()
script.generate_revision(a, "foobar", refresh=True)
assert_raises_message(
util.CommandError,
"Could not determine revision id from filename foobar_%s.py. "
"Be sure the 'revision' variable is declared "
"inside the script." % a,
write_script, script, a, """
down_revision = None
from alembic import op
def upgrade():
op.execute("CREATE TABLE foo(id integer)")
def downgrade():
op.execute("DROP TABLE foo")
""")
class SourcelessVersioningTest(VersioningTest):
sourceless = True
class SourcelessNeedsFlagTest(unittest.TestCase):
def setUp(self):
self.env = staging_env(sourceless=False)
self.cfg = _sqlite_testing_config()
def tearDown(self):
clear_staging_env()
def test_needs_flag(self):
a = util.rev_id()
script = ScriptDirectory.from_config(self.cfg)
script.generate_revision(a, None, refresh=True)
write_script(script, a, """
revision = '%s'
down_revision = None
from alembic import op
def upgrade():
op.execute("CREATE TABLE foo(id integer)")
def downgrade():
op.execute("DROP TABLE foo")
""" % a, sourceless=True)
script = ScriptDirectory.from_config(self.cfg)
eq_(script.get_heads(), [])
self.cfg.set_main_option("sourceless", "true")
script = ScriptDirectory.from_config(self.cfg)
eq_(script.get_heads(), [a])
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