summaryrefslogtreecommitdiff
path: root/src/third_party/wiredtiger/test/suite/test_bug008.py
diff options
context:
space:
mode:
Diffstat (limited to 'src/third_party/wiredtiger/test/suite/test_bug008.py')
-rw-r--r--src/third_party/wiredtiger/test/suite/test_bug008.py161
1 files changed, 161 insertions, 0 deletions
diff --git a/src/third_party/wiredtiger/test/suite/test_bug008.py b/src/third_party/wiredtiger/test/suite/test_bug008.py
new file mode 100644
index 00000000000..8f0526d9cef
--- /dev/null
+++ b/src/third_party/wiredtiger/test/suite/test_bug008.py
@@ -0,0 +1,161 @@
+#!/usr/bin/env python
+#
+# Public Domain 2014-2016 MongoDB, Inc.
+# Public Domain 2008-2014 WiredTiger, Inc.
+#
+# This is free and unencumbered software released into the public domain.
+#
+# Anyone is free to copy, modify, publish, use, compile, sell, or
+# distribute this software, either in source code form or as a compiled
+# binary, for any purpose, commercial or non-commercial, and by any
+# means.
+#
+# In jurisdictions that recognize copyright laws, the author or authors
+# of this software dedicate any and all copyright interest in the
+# software to the public domain. We make this dedication for the benefit
+# of the public at large and to the detriment of our heirs and
+# successors. We intend this dedication to be an overt act of
+# relinquishment in perpetuity of all present and future rights to this
+# software under copyright law.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+#
+# test_bug008.py
+# Regression tests.
+
+import wiredtiger, wttest
+from helper import simple_populate, key_populate, value_populate
+from wtscenario import check_scenarios
+
+# Tests for invisible updates.
+class test_bug008(wttest.WiredTigerTestCase):
+ scenarios = check_scenarios([
+ ('fix', dict(fmt='key_format=r,value_format=8t', empty=1)),
+ ('row', dict(fmt='key_format=S', empty=0)),
+ ('var', dict(fmt='key_format=r', empty=0))
+ ])
+
+ # Verify cursor search and search-near operations on a file with a set of
+ # on-page visible records, and a set of insert-list invisible records.
+ def test_search_invisible_one(self):
+ uri = 'file:test_bug008' # This is a btree layer test.
+
+ # Populate the tree and reopen the connection, forcing it to disk
+ # and moving the records to an on-page format.
+ simple_populate(self, uri, self.fmt, 100)
+ self.reopen_conn()
+
+ # Begin a transaction, and add some additional records.
+ self.session.begin_transaction()
+ cursor = self.session.open_cursor(uri, None)
+ for i in range(100, 140):
+ cursor[key_populate(cursor, i)] = value_populate(cursor, i)
+
+ # Open a separate session and cursor.
+ s = self.conn.open_session()
+ cursor = s.open_cursor(uri, None)
+
+ # Search for an invisible record.
+ cursor.set_key(key_populate(cursor, 130))
+ if self.empty:
+ # Invisible updates to fixed-length column-store objects are
+ # invisible to the reader, but the fact that they exist past
+ # the end of the initial records causes the instantiation of
+ # empty records: confirm successful return of an empty row.
+ cursor.search()
+ self.assertEqual(cursor.get_key(), 130)
+ self.assertEqual(cursor.get_value(), 0)
+ else:
+ # Otherwise, we should not find any matching records.
+ self.assertEqual(cursor.search(), wiredtiger.WT_NOTFOUND)
+
+ # Search-near for an invisible record, which should succeed, returning
+ # the last visible record.
+ cursor.set_key(key_populate(cursor, 130))
+ cursor.search_near()
+ if self.empty:
+ # Invisible updates to fixed-length column-store objects are
+ # invisible to the reader, but the fact that they exist past
+ # the end of the initial records causes the instantiation of
+ # empty records: confirm successful return of an empty row.
+ cursor.search()
+ self.assertEqual(cursor.get_key(), 130)
+ self.assertEqual(cursor.get_value(), 0)
+ else:
+ # Otherwise, we should find the closest record for which we can see
+ # the value.
+ self.assertEqual(cursor.get_key(), key_populate(cursor, 100))
+ self.assertEqual(cursor.get_value(), value_populate(cursor, 100))
+
+ # Verify cursor search and search-near operations on a file with a set of
+ # on-page visible records, a set of insert-list visible records, and a set
+ # of insert-list invisible records. (The reason I'm adding this slightly
+ # different test is because I want to confirm that if search positions the
+ # the cursor in the insert list with a set of invisible updates, the right
+ # fallback happens, whether the correct position is in the page slots or
+ # the insert list.)
+ def test_search_invisible_two(self):
+ uri = 'file:test_bug008' # This is a btree layer test.
+
+ # Populate the tree and reopen the connection, forcing it to disk
+ # and moving the records to an on-page format.
+ simple_populate(self, uri, self.fmt, 100)
+ self.reopen_conn()
+
+ # Add some additional visible records.
+ cursor = self.session.open_cursor(uri, None)
+ for i in range(100, 120):
+ cursor[key_populate(cursor, i)] = value_populate(cursor, i)
+ cursor.close()
+
+ # Begin a transaction, and add some additional records.
+ self.session.begin_transaction()
+ cursor = self.session.open_cursor(uri, None)
+ for i in range(120, 140):
+ cursor[key_populate(cursor, i)] = value_populate(cursor, i)
+
+ # Open a separate session and cursor.
+ s = self.conn.open_session()
+ cursor = s.open_cursor(uri, None)
+
+ # Search for an invisible record.
+ cursor.set_key(key_populate(cursor, 130))
+ if self.empty:
+ # Invisible updates to fixed-length column-store objects are
+ # invisible to the reader, but the fact that they exist past
+ # the end of the initial records causes the instantiation of
+ # empty records: confirm successful return of an empty row.
+ cursor.search()
+ self.assertEqual(cursor.get_key(), 130)
+ self.assertEqual(cursor.get_value(), 0)
+ else:
+ # Otherwise, we should not find any matching records.
+ self.assertEqual(cursor.search(), wiredtiger.WT_NOTFOUND)
+
+ # Search-near for an invisible record, which should succeed, returning
+ # the last visible record.
+ cursor.set_key(key_populate(cursor, 130))
+ cursor.search_near()
+ if self.empty:
+ # Invisible updates to fixed-length column-store objects are
+ # invisible to the reader, but the fact that they exist past
+ # the end of the initial records causes the instantiation of
+ # empty records: confirm successful return of an empty row.
+ cursor.search()
+ self.assertEqual(cursor.get_key(), 130)
+ self.assertEqual(cursor.get_value(), 0)
+ else:
+ # Otherwise, we should find the closest record for which we can see
+ # the value.
+ self.assertEqual(cursor.get_key(), key_populate(cursor, 119))
+ self.assertEqual(cursor.get_value(), value_populate(cursor, 119))
+
+
+if __name__ == '__main__':
+ wttest.run()