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+#!/usr/bin/env python
+#
+# Public Domain 2014-2017 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.
+#
+
+from runner import *
+from wiredtiger import *
+from workgen import *
+
+def tablename(id):
+ return "table:test%06d" % id
+
+def show(tname):
+ print('')
+ print('<><><><> ' + tname + ' <><><><>')
+ c = s.open_cursor(tname, None)
+ for k,v in c:
+ print('key: ' + k)
+ print('value: ' + v)
+ print('<><><><><><><><><><><><>')
+ c.close()
+
+def expectException(expr):
+ gotit = False
+ try:
+ expr()
+ except BaseException as e:
+ print('got expected exception: ' + str(e))
+ gotit = True
+ if not gotit:
+ raise Exception("missing expected exception")
+
+context = Context()
+conn = wiredtiger_open("WT_TEST", "create,cache_size=1G")
+s = conn.open_session()
+tname0 = tablename(0)
+tname1 = tablename(1)
+s.create(tname0, 'key_format=S,value_format=S')
+s.create(tname1, 'key_format=S,value_format=S')
+
+ops = Operation(Operation.OP_INSERT, Table(tname0), Key(Key.KEYGEN_APPEND, 10), Value(100))
+workload = Workload(context, Thread(ops))
+
+print('RUN1')
+workload.run(conn)
+show(tname0)
+
+# The context has memory of how many keys are in all the tables.
+# truncate goes behind context's back, but it doesn't matter for
+# an insert-only test.
+s.truncate(tname0, None, None)
+
+# Show how to 'multiply' operations
+op = Operation(Operation.OP_INSERT, Table(tname0), Key(Key.KEYGEN_APPEND, 10), Value(100))
+op2 = Operation(Operation.OP_INSERT, Table(tname1), Key(Key.KEYGEN_APPEND, 20), Value(30))
+o = op2 * 10
+print 'op is: ' + str(op)
+print 'multiplying op is: ' + str(o)
+thread0 = Thread(o + op + op)
+workload = Workload(context, thread0)
+print('RUN2')
+workload.run(conn)
+show(tname0)
+show(tname1)
+
+s.truncate(tname0, None, None)
+s.truncate(tname1, None, None)
+
+# operations can be multiplied, added in any combination.
+op += Operation(Operation.OP_INSERT, Table(tname0), Key(Key.KEYGEN_APPEND, 10), Value(10))
+op *= 2
+op += Operation(Operation.OP_INSERT, Table(tname0), Key(Key.KEYGEN_APPEND, 10), Value(10))
+thread0 = Thread(op * 10 + op2 * 20)
+workload = Workload(context, thread0)
+print('RUN3')
+workload.run(conn)
+show(tname0)
+show(tname1)
+
+print('workload is ' + str(workload))
+print('thread0 is ' + str(thread0))
+
+def assignit(k, n):
+ k._size = n
+
+expectException(lambda: Operation(
+ Operation.OP_INSERT, Table('foo'), Key(Key.KEYGEN_APPEND, 10)))
+# we don't catch this exception here, but in Workload.run()
+k = Key(Key.KEYGEN_APPEND, 1)
+assignit(k, 30)
+assignit(k, 1) # we don't catch this exception here, but in Workload.run()
+op = Operation(Operation.OP_INSERT, Table(tname0), k, Value(10))
+workload = Workload(context, Thread(op))
+print('RUN4')
+expectException(lambda: workload.run(conn))
+
+print('HELP:')
+print(workload.options.help())