96 lines
3.8 KiB
Python
96 lines
3.8 KiB
Python
#!/usr/bin/env python
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#
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# Public Domain 2014-2016 MongoDB, Inc.
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# Public Domain 2008-2014 WiredTiger, Inc.
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#
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# This is free and unencumbered software released into the public domain.
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#
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# Anyone is free to copy, modify, publish, use, compile, sell, or
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# distribute this software, either in source code form or as a compiled
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# binary, for any purpose, commercial or non-commercial, and by any
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# means.
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#
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# In jurisdictions that recognize copyright laws, the author or authors
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# of this software dedicate any and all copyright interest in the
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# software to the public domain. We make this dedication for the benefit
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# of the public at large and to the detriment of our heirs and
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# successors. We intend this dedication to be an overt act of
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# relinquishment in perpetuity of all present and future rights to this
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# software under copyright law.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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# OTHER DEALINGS IN THE SOFTWARE.
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#
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# test_bug004.py
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# Regression tests.
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import wiredtiger, wttest
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from helper import key_populate, value_populate
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# Check to make sure we see the right versions of overflow keys and values
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# when they are deleted in reconciliation without having been instantiated
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# in the system.
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class test_bug004(wttest.WiredTigerTestCase):
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# This is a btree layer test, test files, ignore tables.
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uri = 'file:test_ovfl_key'
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# Use a small page size because we want to create overflow items
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config = 'allocation_size=512,' +\
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'leaf_page_max=512,value_format=S,key_format=S'
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nentries = 30
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def test_bug004(self):
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# Create the object, fill with overflow keys and values.
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self.session.create(self.uri, self.config)
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c1 = self.session.open_cursor(self.uri, None)
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for i in range(1, self.nentries):
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c1[key_populate(c1, i) + 'abcdef' * 100] = \
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value_populate(c1, i) + 'abcdef' * 100
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c1.close()
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# Verify the object, force it to disk, and verify the on-disk version.
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self.session.verify(self.uri)
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self.reopen_conn()
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self.session.verify(self.uri)
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# Create a new session and start a transaction to force the engine
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# to access old versions of the key/value pairs.
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tmp_session = self.conn.open_session(None)
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tmp_session.begin_transaction("isolation=snapshot")
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# Load the object and use truncate to delete a set of records. (I'm
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# using truncate because it doesn't instantiate keys, all other ops
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# currently do -- that's unlikely to change, but is a problem for the
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# test going forward.)
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c1 = self.session.open_cursor(self.uri, None)
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c1.set_key(key_populate(c1, self.nentries - 5) + 'abcdef' * 100)
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c2 = self.session.open_cursor(self.uri, None)
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c2.set_key(key_populate(c2, self.nentries + 5) + 'abcdef' * 100)
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self.session.truncate(None, c1, c2, None)
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c1.close()
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c2.close()
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# Checkpoint, freeing overflow blocks.
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self.session.checkpoint()
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# Use the snapshot cursor to retrieve the old key/value pairs
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c1 = tmp_session.open_cursor(self.uri, None)
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c1.set_key(key_populate(c1, 1) + 'abcdef' * 100)
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c1.search()
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for i in range(2, self.nentries):
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c1.next()
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self.assertEquals(
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c1.get_key(), key_populate(c1, i) + 'abcdef' * 100)
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self.assertEquals(
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c1.get_value(), value_populate(c1, i) + 'abcdef' * 100)
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if __name__ == '__main__':
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wttest.run()
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