WT-2142. At the end of a test run, all open connections should be closed

to prevent cascading errors. Clean up and (mostly) standardize how connection
configuration is added to and modified.

Details:
- class TestSuiteConnection wraps an opened Connection,
  calls to close() remove it from the list of active connections.

- WiredTigerTestCase.wiredtiger_open uses a TestSuiteConnection, and this
  version of wiredtiger_open is now used everywhere.

- in tearDown(), active connections are explicitly closed.

- In WiredTigerTestCase derived classes, we now use use self.conn_config
  if possible in tests in preference to overloading setUpConnectionOpen().

- Explicitly call close on extra connections created dynamically.

- Remove some unused code.

1 files changed, 1 insertions, 6 deletions

diff --git a/test/suite/test_perf001.py b/test/suite/test_perf001.py
index 4f99e552b79..b6377e2f728 100644
--- a/test/suite/test_perf001.py
+++ b/test/suite/test_perf001.py
@@ -44,12 +44,7 @@ class test_perf001(wttest.WiredTigerTestCase):
         #('lsm-file', dict(tabletype='lsm',indextype='file')),
         #('lsm-lsm', dict(tabletype='lsm',indextype='lsm')),
     ])
-
-    def setUpConnectionOpen(self, dir):
-        wtopen_args = 'create,cache_size=512M'
-        conn = wiredtiger.wiredtiger_open(dir, wtopen_args)
-        self.pr(`conn`)
-        return conn
+    conn_config = 'cache_size=512M'
 
     def test_performance_of_indices(self):
         uri = 'table:' + self.table_name