WT-1845 - Allow read only transactions to commit after failure

1 files changed, 80 insertions, 0 deletions

diff --git a/test/suite/test_ro_rollback.py b/test/suite/test_ro_rollback.py
new file mode 100644
index 00000000000..0eea76de292
--- /dev/null
+++ b/test/suite/test_ro_rollback.py
@@ -0,0 +1,80 @@
+#!/usr/bin/env python
+#
+# Public Domain 2014-2015 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 suite_subprocess import suite_subprocess
+from wiredtiger import stat
+from wtscenario import multiply_scenarios, number_scenarios
+
+# test_ro_rollback.py
+#    test of commit following failed op in a read only transaction.
+class test_ro_rollback(wttest.WiredTigerTestCase, suite_subprocess):
+    name = 'test_ro_rollback'
+    uri = 'table:' + name
+
+    types = [
+        ('row', dict(tabletype='row',
+                    create_params = 'key_format=i,value_format=i')),
+        ('var', dict(tabletype='var',
+                    create_params = 'key_format=r,value_format=i')),
+        ('fix', dict(tabletype='fix',
+                    create_params = 'key_format=r,value_format=8t')),
+    ]
+
+    scenarios = types
+
+    # Test compaction.
+    def test_ro_rollback(self):
+
+        # Setup the session and table.
+        session = self.conn.open_session(None)
+        session.create(self.uri, self.create_params)
+        session.begin_transaction("isolation=snapshot")
+
+        # Create a read only transaction.
+        c = session.open_cursor(self.uri, None)
+        c.next()
+        msg = '/next_random.*boolean/'
+        self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
+            lambda:session.open_cursor(self.uri, None, "next_random=bar"), msg)
+        # This commit should succeed as we have done no writes.
+        session.commit_transaction()
+
+        # Create a read/write transaction.
+        session.begin_transaction("isolation=snapshot")
+        c = session.open_cursor(self.uri, None)
+        c[123] = 123
+        self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
+            lambda:session.open_cursor(self.uri, None, "next_random=bar"), msg)
+        # This commit should fail as we have written something
+        self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
+            lambda:session.commit_transaction(),'/requires rollback/')
+
+if __name__ == '__main__':
+    wttest.run()
+