#!/usr/bin/env python
#
# Public Domain 2014-present MongoDB, Inc.
# Public Domain 2008-2014 WiredTiger, Inc.
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import os
import wiredtiger, wttest
from wtscenario import make_scenarios

# test_empty.py
#       Test that empty objects don't write anything other than a single sector.
class test_empty(wttest.WiredTigerTestCase):
    name = 'test_empty'

    scenarios = make_scenarios([
        ('file-r', dict(type='file:', fmt='r')),
        ('file-S', dict(type='file:', fmt='S')),
        ('table-r', dict(type='table:', fmt='r')),
        ('table-S', dict(type='table:', fmt='S'))
    ])

    # Creating an object and then closing it shouldn't write any blocks.
    def test_empty_create(self):
        uri = self.type + self.name
        self.session.create(uri, 'key_format=' + self.fmt + ',value_format=S')
        self.session.close()
        name = self.name
        if self.type == "table:":
            name = name + '.wt'
        self.assertEquals(os.stat(name).st_size, 4*1024)

if __name__ == '__main__':
    wttest.run()