def backend_convert_format(test_object, suffix, format):
"""Convert the internal structure format of an already-open database.
- `test_object`: The instance of the test class we're
converting a database for.
- `suffix`: The suffix to use on variable names when finding
the database and auxiliary information for it.
"""
# Get the contents of the database from the fpv attribute.
contents = TestMethods_CreatesDatabase.backend_db_contents(
test_object, suffix)
# Turn it into a fresh StringIO.
fp = StringIO(contents)
# Hack StringIO so that it keeps its buffer around even after
# closing.
def close():
if not fp.closed:
fp.closed = True
del fp.pos #, but not fp.buf
fp.close = close
# Convert it to the requested format.
database.convert_format(
filename=None,
backend_name='schevo.store',
backend_args=dict(fp=fp),
format=format,
)
# Turn it back into a fpv attribute.
setattr(test_object, 'fpv' + suffix, fp.getvalue())
def backend_convert_format(test_object, suffix, format):
"""Convert the internal structure format of an already-open database.
- `test_object`: The instance of the test class we're
converting a database for.
- `suffix`: The suffix to use on variable names when finding
the database and auxiliary information for it.
"""
filename = getattr(test_object, 'filename' + suffix)
# Convert it to the requested format.
database.convert_format(
filename = filename,
backend_args = test_object.backend_args,
format = format,
)
