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+#!/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.
+
+import wiredtiger, wttest
+from wtscenario import check_scenarios
+
+# test_base04.py
+# Cursor operations
+class test_cursor04(wttest.WiredTigerTestCase):
+ """
+ Test cursor search and search_near
+ """
+ table_name1 = 'test_cursor04'
+ nentries = 20
+
+ scenarios = check_scenarios([
+ ('row', dict(tablekind='row', uri='table')),
+ ('lsm-row', dict(tablekind='row', uri='lsm')),
+ ('col', dict(tablekind='col', uri='table')),
+ ('fix', dict(tablekind='fix', uri='table'))
+ ])
+
+ def config_string(self):
+ """
+ Return any additional configuration.
+ This method may be overridden.
+ """
+ return ''
+
+ def session_create(self, name, args):
+ """
+ session.create, but report errors more completely
+ """
+ try:
+ self.session.create(name, args)
+ except:
+ print('**** ERROR in session.create("' + name + '","' + args + '") ***** ')
+ raise
+
+ def create_session_and_cursor(self):
+ tablearg = self.uri + ":" + self.table_name1
+ if self.tablekind == 'row':
+ keyformat = 'key_format=S'
+ else:
+ keyformat = 'key_format=r' # record format
+ if self.tablekind == 'fix':
+ valformat = 'value_format=8t'
+ else:
+ valformat = 'value_format=S'
+ create_args = keyformat + ',' + valformat + self.config_string()
+ self.pr('creating session: ' + create_args)
+ self.session_create(tablearg, create_args)
+ self.pr('creating cursor')
+ return self.session.open_cursor(tablearg, None, None)
+
+ def genkey(self, i):
+ if self.tablekind == 'row':
+ return 'key' + str(i).zfill(5) # return key00001, key00002, etc.
+ else:
+ return long(i+1)
+
+ def genvalue(self, i):
+ if self.tablekind == 'fix':
+ return int(i & 0xff)
+ else:
+ return 'value' + str(i)
+
+ def expect_either(self, cursor, lt, gt):
+ origkey = cursor.get_key()
+ direction = cursor.search_near()
+ self.assertNotEqual(direction, wiredtiger.WT_NOTFOUND)
+
+ # Deletions for 'fix' clear the value, they
+ # do not remove the key, so we expect '0' direction
+ # (that is key found) for fix.
+ if self.tablekind != 'fix':
+ self.assertTrue(direction == 1 or direction == -1)
+ else:
+ self.assertEqual(direction, 0)
+
+ if direction == 1:
+ self.assertEqual(cursor.get_key(), self.genkey(gt))
+ self.assertEqual(cursor.get_value(), self.genvalue(gt))
+ elif direction == -1:
+ self.assertEqual(cursor.get_key(), self.genkey(lt))
+ self.assertEqual(cursor.get_value(), self.genvalue(lt))
+ else:
+ self.assertEqual(direction, 0)
+ self.assertEqual(cursor.get_key(), origkey)
+ self.assertEqual(cursor.get_value(), 0)
+
+ def test_searches(self):
+ """
+ Create entries, and read back in a cursor: key=string, value=string
+ """
+ cursor = self.create_session_and_cursor()
+
+ # Some tests below expect keys between 0-10 to be available
+ self.assertTrue(self.nentries > 10)
+
+ # 0. Populate the key space
+ for i in range(0, self.nentries):
+ cursor[self.genkey(i)] = self.genvalue(i)
+
+ # 1. Calling search for a value that exists
+ self.assertEqual(cursor[self.genkey(5)], self.genvalue(5))
+
+ # 2. Calling search for a value that does not exist
+ self.assertRaises(KeyError, lambda: cursor[self.genkey(self.nentries)])
+
+ # 2. Calling search_near for a value beyond the end
+ cursor.set_key(self.genkey(self.nentries))
+ cmp = cursor.search_near()
+ self.assertEqual(cmp, -1)
+ self.assertEqual(cursor.get_key(), self.genkey(self.nentries-1))
+ self.assertEqual(cursor.get_value(), self.genvalue(self.nentries-1))
+
+ # 2.a calling search_near for an existing value
+ cursor.set_key(self.genkey(7))
+ cmp = cursor.search_near()
+ self.assertEqual(cmp, 0)
+ self.assertEqual(cursor.get_key(), self.genkey(7))
+ self.assertEqual(cursor.get_value(), self.genvalue(7))
+
+ # 3. Delete some keys
+ # Deletions for 'fix' clear the value, they
+ # do not remove the key
+ cursor.set_key(self.genkey(0))
+ cursor.remove()
+ cursor.set_key(self.genkey(5))
+ cursor.remove()
+ cursor.set_key(self.genkey(9))
+ cursor.remove()
+ cursor.set_key(self.genkey(10))
+ cursor.remove()
+
+ #cursor.reset()
+ #for key, value in cursor:
+ # print('key: ' + str(key))
+ # print('value: ' + str(value))
+
+ cursor.set_key(self.genkey(0))
+ cmp = cursor.search_near()
+ if self.tablekind != 'fix':
+ self.assertEqual(cmp, 1)
+ self.assertEqual(cursor.get_key(), self.genkey(1))
+ self.assertEqual(cursor.get_value(), self.genvalue(1))
+ else:
+ self.assertEqual(cmp, 0)
+ self.assertEqual(cursor.get_key(), self.genkey(0))
+ self.assertEqual(cursor.get_value(), 0)
+
+ cursor.set_key(self.genkey(5))
+ self.expect_either(cursor, 4, 6)
+
+ cursor.set_key(self.genkey(9))
+ self.expect_either(cursor, 8, 11)
+
+ cursor.set_key(self.genkey(10))
+ self.expect_either(cursor, 8, 11)
+
+ cursor.close()
+
+if __name__ == '__main__':
+ wttest.run()