#!/usr/bin/env python
#
# Public Domain 2014-present MongoDB, Inc.
# Public Domain 2008-2014 WiredTiger, Inc.
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# test_txn10.py
#   Transactions: commits and rollbacks
#

from helper import simulate_crash_restart
from suite_subprocess import suite_subprocess
import wttest

class test_txn10(wttest.WiredTigerTestCase, suite_subprocess):
    t1 = 'table:test_txn10_1'
    t2 = 'table:test_txn10_2'
    create_params = 'key_format=i,value_format=i'
    conn_config = 'log=(enabled,file_max=100K,remove=false),' + \
                'transaction_sync=(method=dsync,enabled)'

    def test_recovery(self):
        ''' Check for bugs in file ID allocation. '''

        # Here's the strategy:
        #    - Create a table (t1).
        #    - Do a clean restart.
        #    - Create another table (t2).
        #    - Insert data into t2.
        #    - Make recovery run.
        #
        # If we aren't tracking file IDs properly, it's possible that
        # we'd end up apply the log records for t2 to table t1.
        self.session.create(self.t1, self.create_params)
        self.reopen_conn()
        self.session.create(self.t2, self.create_params)
        c = self.session.open_cursor(self.t2, None, None)
        for i in range(10000):
            c[i] = i + 1
        c.close()
        simulate_crash_restart(self, ".", "RESTART")
        c = self.session.open_cursor(self.t2, None, None)
        i = 0
        for key, value in c:
            self.assertEqual(i, key)
            self.assertEqual(i+1, value)
            i += 1
        self.assertEqual(i, 10000)
        c.close()
        c = self.session.open_cursor(self.t1, None, None)
        i = 0
        for key, value in c:
            i += 1
        self.assertEqual(i, 0)
        c.close()

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