WT-2142. In test suite, replace lambda expressions by functions.

test/suite/test_async01.py

@@ -132,9 +132,10 @@ class test_async01(wttest.WiredTigerTestCase, suite_subprocess):
         ('table-row', dict(tablekind='row',uri='table')),
     ])
 
-    conn_config = lambda self, dir: \
-                'async=(enabled=true,ops_max=%s,' % self.async_ops + \
-                'threads=%s)' % self.async_threads
+    # Enable async for this test.
+    def conn_config(self, dir):
+        return 'async=(enabled=true,ops_max=%s,' % self.async_ops + \
+            'threads=%s)' % self.async_threads
 
     def genkey(self, i):
         if self.tablekind == 'row':

test/suite/test_async02.py

@@ -129,9 +129,10 @@ class test_async02(wttest.WiredTigerTestCase, suite_subprocess):
         ('table-row', dict(tablekind='row',uri='table')),
     ])
 
-    conn_config = lambda self, dir: \
-                'async=(enabled=true,ops_max=%s,' % self.async_ops + \
-                'threads=%s)' % self.async_threads
+    # Enable async for this test.
+    def conn_config(self, dir):
+        return 'async=(enabled=true,ops_max=%s,' % self.async_ops + \
+            'threads=%s)' % self.async_threads
 
     def genkey(self, i):
         if self.tablekind == 'row':

test/suite/test_backup04.py

@@ -57,9 +57,10 @@ class test_backup_target(wttest.WiredTigerTestCase, suite_subprocess):
     scenarios = check_scenarios([
         ('table', dict(uri='table:test',dsize=100,nops=2000,nthreads=1,time=30)),
     ])
+
     # Create a large cache, otherwise this test runs quite slowly.
-    conn_config = lambda self, dir: \
-            'cache_size=1G,log=(archive=false,enabled,file_max=%s)' % \
+    def conn_config(self, dir):
+        return 'cache_size=1G,log=(archive=false,enabled,file_max=%s)' % \
             self.logmax
 
     def populate(self, uri, dsize, rows):

test/suite/test_bug011.py

@@ -40,8 +40,9 @@ class test_bug011(wttest.WiredTigerTestCase):
     ntables = 50
     nrows = 10000
     nops = 10000
-    conn_config = lambda self, dir: \
-                  'cache_size=10MB,hazard_max=' + str(self.ntables / 2)
+    # Add connection configuration for this test.
+    def conn_config(self, dir):
+        return 'cache_size=10MB,hazard_max=' + str(self.ntables / 2)
 
     def test_eviction(self):
         cursors = []

test/suite/test_compress01.py

@@ -52,8 +52,9 @@ class test_compress01(wttest.WiredTigerTestCase):
     nrecords = 10000
     bigvalue = "abcdefghij" * 1000
 
-    conn_config = lambda self, dir: \
-            self.extensionArg(self.compress)
+    # Load the compression extension, compression is enabled elsewhere.
+    def conn_config(self, dir):
+        return self.extensionArg(self.compress)
 
     # Return the wiredtiger_open extension argument for a shared library.
     def extensionArg(self, name):

test/suite/test_cursor07.py

@@ -48,9 +48,10 @@ class test_cursor07(wttest.WiredTigerTestCase, suite_subprocess):
         ('regular', dict(reopen=False)),
         ('reopen', dict(reopen=True))
     ])
-    conn_config = lambda self, dir: \
-                'log=(archive=false,enabled,file_max=%s),' % self.logmax + \
-                'transaction_sync="(method=dsync,enabled)"'
+    # Enable logging for this test.
+    def conn_config(self, dir):
+        return 'log=(archive=false,enabled,file_max=%s),' % self.logmax + \
+            'transaction_sync="(method=dsync,enabled)"'
 
     def test_log_cursor(self):
         # print "Creating %s with config '%s'" % (self.uri, self.create_params)

test/suite/test_cursor08.py

@@ -54,11 +54,12 @@ class test_cursor08(wttest.WiredTigerTestCase, suite_subprocess):
         ('none', dict(compress='none')),
     ])
     scenarios = number_scenarios(multiply_scenarios('.', reopens, compress))
-    conn_config = lambda self, dir: \
-                'log=(archive=false,enabled,file_max=%s,' % self.logmax + \
-                'compressor=%s),' % self.compress + \
-                'transaction_sync="(method=dsync,enabled)",' + \
-                self.extensionArg(self.compress)
+    # Load the compression extension, and enable it for logging.
+    def conn_config(self, dir):
+        return 'log=(archive=false,enabled,file_max=%s,' % self.logmax + \
+            'compressor=%s),' % self.compress + \
+            'transaction_sync="(method=dsync,enabled)",' + \
+            self.extensionArg(self.compress)
 
     # Return the wiredtiger_open extension argument for a shared library.
     def extensionArg(self, name):

test/suite/test_stat02.py

@@ -60,7 +60,9 @@ class test_stat_cursor_config(wttest.WiredTigerTestCase):
     scenarios = number_scenarios(
         multiply_scenarios('.', uri, data_config, cursor_config))
 
-    conn_config = lambda self, dir: 'statistics=(%s)' % self.data_config
+    # Turn on statistics for this test.
+    def conn_config(self, dir):
+        return 'statistics=(%s)' % self.data_config
 
     # For each database/cursor configuration, confirm the right combinations
     # succeed or fail.

test/suite/test_txn08.py

@@ -41,9 +41,10 @@ class test_txn08(wttest.WiredTigerTestCase, suite_subprocess):
     tablename = 'test_txn08'
     uri = 'table:' + tablename
 
-    conn_config = lambda self, dir: \
-                'log=(archive=false,enabled,file_max=%s),' % self.logmax + \
-                'transaction_sync="(method=dsync,enabled)"'
+    # Turn on logging for this test.
+    def conn_config(self, dir):
+        return 'log=(archive=false,enabled,file_max=%s),' % self.logmax + \
+            'transaction_sync="(method=dsync,enabled)"'
 
     def test_printlog_unicode(self):
         # print "Creating %s with config '%s'" % (self.uri, self.create_params)

test/suite/test_txn11.py

@@ -43,8 +43,9 @@ class test_txn11(wttest.WiredTigerTestCase, suite_subprocess):
     source_uri = 'table:' + tablename + "_src"
     uri = 'table:' + tablename
 
-    conn_config = lambda self, dir: \
-            'log=(archive=%s,' % self.archive + \
+    # Turn on logging for this test.
+    def conn_config(self, dir):
+        return 'log=(archive=%s,' % self.archive + \
             'enabled,file_max=%s,prealloc=false),' % self.logmax + \
             'transaction_sync=(enabled=false),'
 

test/suite/test_txn13.py

@@ -49,9 +49,10 @@ class test_txn13(wttest.WiredTigerTestCase, suite_subprocess):
         ('4gb', dict(expect_err=True, valuesize=4194304))
     ])
 
-    conn_config = lambda self, dir: \
-                  'log=(archive=false,enabled,file_max=%s)' % self.logmax + \
-                  ',cache_size=8G'
+    # Turn on logging for this test.
+    def conn_config(self, dir):
+        return 'log=(archive=false,enabled,file_max=%s)' % self.logmax + \
+            ',cache_size=8G'
 
     @wttest.longtest('txn tests with huge values')
     def test_large_values(self):

test/suite/test_txn15.py

@@ -40,8 +40,9 @@ class test_txn15(wttest.WiredTigerTestCase, suite_subprocess):
     uri = 'table:test_txn15_1'
     create_params = 'key_format=i,value_format=i'
     entries = 100
-    conn_config = lambda self, dir: \
-            'statistics=(fast),' + \
+    # Turn on logging for this test.
+    def conn_config(self, dir):
+        return 'statistics=(fast),' + \
             'log=(archive=false,enabled,file_max=100K),' + \
             'use_environment=false,' + \
             'transaction_sync=(enabled=%s),' % self.conn_enable + \