#!/usr/bin/env python
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# Public Domain 2014-2018 MongoDB, Inc.
# Public Domain 2008-2014 WiredTiger, Inc.
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import wiredtiger, wttest
from wtdataset import SimpleDataSet, SimpleIndexDataSet
from wtdataset import SimpleLSMDataSet, ComplexDataSet, ComplexLSMDataSet
from wtscenario import filter_scenarios, make_scenarios

# test_overwrite.py
#    cursor overwrite configuration method
class test_overwrite(wttest.WiredTigerTestCase):
    name = 'overwrite'
    keyfmt = [
        ('integer', dict(keyfmt='i')),
        ('recno', dict(keyfmt='r')),
        ('string', dict(keyfmt='S')),
    ]
    types = [
        ('file', dict(uri='file:', lsm=False, ds=SimpleDataSet)),
        ('lsm', dict(uri='lsm:', lsm=True, ds=SimpleDataSet)),
        ('table-complex', dict(uri='table:', lsm=False, ds=ComplexDataSet)),
        ('table-complex-lsm', dict(uri='table:', lsm=True, ds=ComplexLSMDataSet)),
        ('table-index', dict(uri='table:', lsm=False, ds=SimpleIndexDataSet)),
        ('table-simple', dict(uri='table:', lsm=False, ds=SimpleDataSet)),
        ('table-simple-lsm', dict(uri='table:', lsm=True, ds=SimpleLSMDataSet)),
    ]
    # Skip record number keys with LSM.
    scenarios = filter_scenarios(make_scenarios(types, keyfmt),
        lambda name, d: not (d['lsm'] and d['keyfmt'] == 'r'))

    # Confirm a cursor configured with/without overwrite correctly handles
    # non-existent records during insert, remove and update operations.
    def test_overwrite_insert(self):
        uri = self.uri + self.name
        ds = self.ds(self, uri, 100, key_format=self.keyfmt)
        ds.populate()

        # Insert of an existing record with overwrite off fails.
        cursor = self.session.open_cursor(uri, None, "overwrite=false")
        cursor.set_key(ds.key(5))
        cursor.set_value(ds.value(1000))
        self.assertRaises(wiredtiger.WiredTigerError, lambda: cursor.insert())

        # One additional test for the insert method: duplicate the cursor with
        # overwrite configured and then the insert should succeed.  This test
        # is only for the insert method because the remove and update method
        # failure modes are for non-existent records, and you cannot duplicate
        # cursor pointing to non-existent records.
        cursor = self.session.open_cursor(uri, None, "overwrite=false")
        cursor.set_key(ds.key(5))
        dupc = self.session.open_cursor(None, cursor, "overwrite=true")
        dupc.set_value(ds.value(1001))
        self.assertEquals(dupc.insert(), 0)

        # Insert of an existing record with overwrite on succeeds.
        cursor = self.session.open_cursor(uri, None)
        cursor.set_key(ds.key(6))
        cursor.set_value(ds.value(1002))
        self.assertEquals(cursor.insert(), 0)

        # Insert of a non-existent record with overwrite off succeeds.
        cursor = self.session.open_cursor(uri, None, "overwrite=false")
        cursor.set_key(ds.key(200))
        cursor.set_value(ds.value(1003))
        self.assertEquals(cursor.insert(), 0)

        # Insert of a non-existent record with overwrite on succeeds.
        cursor = self.session.open_cursor(uri, None)
        cursor.set_key(ds.key(201))
        cursor.set_value(ds.value(1004))
        self.assertEquals(cursor.insert(), 0)

    def test_overwrite_remove(self):
        uri = self.uri + self.name
        ds = self.ds(self, uri, 100, key_format=self.keyfmt)
        ds.populate()

        # Remove of an existing record with overwrite off succeeds.
        cursor = self.session.open_cursor(uri, None, "overwrite=false")
        cursor.set_key(ds.key(5))
        self.assertEquals(cursor.remove(), 0)

        # Remove of an existing record with overwrite on succeeds.
        cursor = self.session.open_cursor(uri, None)
        cursor.set_key(ds.key(6))
        self.assertEquals(cursor.remove(), 0)

        # Remove of a non-existent record with overwrite off fails.
        cursor = self.session.open_cursor(uri, None, "overwrite=false")
        cursor.set_key(ds.key(200))
        self.assertEquals(cursor.remove(), wiredtiger.WT_NOTFOUND)

        # Remove of a non-existent record with overwrite on succeeds.
        cursor = self.session.open_cursor(uri, None)
        cursor.set_key(ds.key(201))
        self.assertEquals(cursor.remove(), 0)

    def test_overwrite_update(self):
        uri = self.uri + self.name
        ds = self.ds(self, uri, 100, key_format=self.keyfmt)
        ds.populate()

        # Update of an existing record with overwrite off succeeds.
        cursor = self.session.open_cursor(uri, None, "overwrite=false")
        cursor.set_key(ds.key(5))
        cursor.set_value(ds.value(1005))
        self.assertEquals(cursor.update(), 0)

        # Update of an existing record with overwrite on succeeds.
        cursor = self.session.open_cursor(uri, None)
        cursor.set_key(ds.key(6))
        cursor.set_value(ds.value(1006))
        self.assertEquals(cursor.update(), 0)

        # Update of a non-existent record with overwrite off fails.
        cursor = self.session.open_cursor(uri, None, "overwrite=false")
        cursor.set_key(ds.key(200))
        cursor.set_value(ds.value(1007))
        self.assertEquals(cursor.update(), wiredtiger.WT_NOTFOUND)

        # Update of a non-existent record with overwrite on succeeds.
        cursor = self.session.open_cursor(uri, None)
        cursor.set_key(ds.key(201))
        cursor.set_value(ds.value(1008))
        self.assertEquals(cursor.update(), 0)

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