1 files changed, 236 insertions, 0 deletions
diff --git a/src/third_party/wiredtiger/test/suite/test_cursor17.py b/src/third_party/wiredtiger/test/suite/test_cursor17.py
new file mode 100644
index 00000000000..322b82a65f8
--- /dev/null
+++ b/src/third_party/wiredtiger/test/suite/test_cursor17.py
@@ -0,0 +1,236 @@
+#!/usr/bin/env python
+#
+# Public Domain 2014-present 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_cursor17.py
+#   Test the largest_key interface under various scenarios.
+#
+import wttest
+import wiredtiger
+from wtdataset import SimpleDataSet, ComplexDataSet, ComplexLSMDataSet
+from wtscenario import make_scenarios
+
+class test_cursor17(wttest.WiredTigerTestCase):
+    tablename = 'test_cursor17'
+
+    # Enable the lsm tests once it is supported.
+    types = [
+        ('file-row', dict(type='file:', keyformat='i', valueformat='i', dataset=SimpleDataSet)),
+        ('table-row', dict(type='table:', keyformat='i', valueformat='i', dataset=SimpleDataSet)),
+        ('file-var', dict(type='file:', keyformat='r', valueformat='i', dataset=SimpleDataSet)),
+        ('table-var', dict(type='table:', keyformat='r', valueformat='i', dataset=SimpleDataSet)),
+        ('file-fix', dict(type='file:', keyformat='r', valueformat='8t', dataset=SimpleDataSet)),
+        # ('lsm', dict(type='lsm:', keyformat='i', valueformat='i', dataset=SimpleDataSet)),
+        ('table-r-complex', dict(type='table:', keyformat='r', valueformat=None,
+            dataset=ComplexDataSet)),
+        # ('table-i-complex-lsm', dict(type='table:', keyformat='i', valueformat=None,
+        #   dataset=ComplexLSMDataSet)),
+    ]
+
+    scenarios = make_scenarios(types)
+
+    def populate(self, rownum):
+        if self.valueformat != None:
+            self.ds = self.dataset(self, self.type + self.tablename, rownum, key_format=self.keyformat, value_format=self.valueformat)
+        else:
+            self.ds = self.dataset(self, self.type + self.tablename, rownum, key_format=self.keyformat)
+        self.ds.populate()
+
+    def test_globally_deleted_key(self):
+        self.populate(100)
+
+        # Delete the largest key.
+        cursor = self.session.open_cursor(self.type + self.tablename, None)
+        self.session.begin_transaction()
+        cursor.set_key(100)
+        self.assertEqual(cursor.remove(), 0)
+        self.session.commit_transaction()
+
+        # Verify the key is not visible.
+        self.session.begin_transaction()
+        cursor.set_key(100)
+        if self.valueformat != '8t':
+            self.assertEqual(cursor.search(), wiredtiger.WT_NOTFOUND)
+        else:
+            self.assertEqual(cursor.search(), 0)
+        self.session.rollback_transaction()
+
+        # Verify the largest key.
+        self.session.begin_transaction()
+        self.assertEqual(cursor.largest_key(), 0)
+        self.assertEqual(cursor.get_key(), 100)
+        self.session.rollback_transaction()
+
+        # Verify the key is still not visible after the largest call.
+        self.session.begin_transaction()
+        cursor.set_key(100)
+        if self.valueformat != '8t':
+            self.assertEqual(cursor.search(), wiredtiger.WT_NOTFOUND)
+        else:
+            self.assertEqual(cursor.search(), 0)
+        self.session.rollback_transaction()
+
+        # Use evict cursor to evict the key from memory.
+        evict_cursor = self.session.open_cursor(self.type + self.tablename, None, "debug=(release_evict)")
+        evict_cursor.set_key(100)
+        if self.valueformat != '8t':
+            self.assertEquals(evict_cursor.search(), wiredtiger.WT_NOTFOUND)
+        else:
+            self.assertEquals(evict_cursor.search(), 0)
+        evict_cursor.close()
+
+        # Verify the largest key changed.
+        self.session.begin_transaction()
+        self.assertEqual(cursor.largest_key(), 0)
+        if self.valueformat != '8t':
+            self.assertEqual(cursor.get_key(), 99)
+        else:
+            self.assertEquals(cursor.get_key(), 100)
+        self.session.rollback_transaction()
+
+    def test_uncommitted_insert(self):
+        self.populate(100)
+
+        session2 = self.setUpSessionOpen(self.conn)
+        cursor2 = session2.open_cursor(self.type + self.tablename, None)
+        session2.begin_transaction()
+        cursor2[101] = self.ds.value(101)
+
+        cursor = self.session.open_cursor(self.type + self.tablename, None)
+
+        # Verify the largest key.
+        self.session.begin_transaction()
+        self.assertEqual(cursor.largest_key(), 0)
+        self.assertEqual(cursor.get_key(), 101)
+        self.session.rollback_transaction()
+
+        session2.rollback_transaction()
+
+    def test_read_timestamp(self):
+        self.populate(100)
+
+        cursor = self.session.open_cursor(self.type + self.tablename, None)
+        self.session.begin_transaction('read_timestamp=' + self.timestamp_str(5))
+        # Expect the largest key to throw.
+        with self.expectedStderrPattern("largest key cannot be called with a read timestamp"):
+            try:
+                cursor.largest_key()
+            except wiredtiger.WiredTigerError as e:
+                gotException = True
+                self.pr('got expected exception: ' + str(e))
+                self.assertTrue(str(e).find('nvalid argument') >= 0)
+        self.assertTrue(gotException, msg = 'expected exception')
+        self.session.rollback_transaction()
+
+    def test_not_positioned(self):
+        self.populate(100)
+
+        cursor = self.session.open_cursor(self.type + self.tablename, None)
+        # Verify the largest key.
+        self.session.begin_transaction()
+        self.assertEqual(cursor.largest_key(), 0)
+        self.assertEqual(cursor.get_key(), 100)
+
+        # Call prev
+        self.assertEqual(cursor.prev(), 0)
+        self.assertEqual(cursor.get_key(), 100)
+
+        # Verify the largest key again.
+        self.assertEqual(cursor.largest_key(), 0)
+        self.assertEqual(cursor.get_key(), 100)
+
+        self.assertEqual(cursor.next(), 0)
+        self.assertEqual(cursor.get_key(), 1)
+        self.session.rollback_transaction()
+
+    def test_get_value(self):
+        self.populate(100)
+
+        cursor = self.session.open_cursor(self.type + self.tablename, None)
+        # Verify the largest key.
+        self.session.begin_transaction()
+        self.assertEqual(cursor.largest_key(), 0)
+        self.assertEqual(cursor.get_key(), 100)
+        with self.expectedStderrPattern("requires value be set"):
+            try:
+                cursor.get_value()
+            except wiredtiger.WiredTigerError as e:
+                gotException = True
+                self.pr('got expected exception: ' + str(e))
+                self.assertTrue(str(e).find('nvalid argument') >= 0)
+        self.assertTrue(gotException, msg = 'expected exception')
+        self.session.rollback_transaction()
+
+    def test_empty_table(self):
+        self.populate(0)
+
+        cursor = self.session.open_cursor(self.type + self.tablename, None)
+        # Verify the largest key.
+        self.session.begin_transaction()
+        self.assertEquals(cursor.largest_key(), wiredtiger.WT_NOTFOUND)
+        self.session.rollback_transaction()
+
+    def test_fast_truncate(self):
+        self.populate(100)
+
+        # evict all the pages
+        evict_cursor = self.session.open_cursor(self.type + self.tablename, None, "debug=(release_evict)")
+        self.session.begin_transaction()
+        for i in range(1, 101):
+            evict_cursor.set_key(i)
+            self.assertEquals(evict_cursor.search(), 0)
+        self.session.rollback_transaction()
+        evict_cursor.close()
+
+        # truncate
+        cursor = self.session.open_cursor(self.type + self.tablename, None)
+        self.session.begin_transaction()
+        cursor.set_key(1)
+        self.session.truncate(None, cursor, None, None)
+        self.session.commit_transaction('commit_timestamp=' + self.timestamp_str(5))
+
+        # verify the largest key
+        self.session.begin_transaction()
+        self.assertEqual(cursor.largest_key(), 0)
+        self.assertEqual(cursor.get_key(), 100)
+        self.session.rollback_transaction()
+
+    def test_slow_truncate(self):
+        self.populate(100)
+
+        # truncate
+        cursor = self.session.open_cursor(self.type + self.tablename, None)
+        self.session.begin_transaction()
+        cursor.set_key(100)
+        self.session.truncate(None, cursor, None, None)
+        self.session.commit_transaction('commit_timestamp=' + self.timestamp_str(5))
+
+        # verify the largest key
+        self.session.begin_transaction()
+        self.assertEqual(cursor.largest_key(), 0)
+        self.assertEqual(cursor.get_key(), 100)
+        self.session.rollback_transaction()