Add tests to BasicDatabase and merge implementations test/session_common.py: add new tests: * test set with bad __timestamps * test get on missing item with no default * test clear() method * test new lifetime() method everything below here was needed to get the tests to work across all db's. roundup/backends/sessions_dbm.py: make set() validate __timestamp as float. If invalid and item is new, set it to time.time(). If invalid and item exists keep original timestamp. add lifetime(key_lifetime) method. Given key_lifetime in seconds, generate a __timestamp that will be deleted after that many seconds. roundup/backends/sessions_rdbms.py: make set() behave the same as session_dbm. add lifetime method as above. roundup/backends/sessions_sqlite.py: import session_rdbms::BasicDatabase and override __init__. rather than cloning all the code. Kept a few logging and sql methods. roundup/test/memorydb.py: make get() on a missing key return KeyError make set() conform to dbm/rdbms implementations.

A number of tests uses the infrastructure of
	db_test_base.py

grep "from db_test_base" -l *.py
benchmark.py
session_common.py
test_anydbm.py
test_indexer.py
test_memorydb.py
test_mysql.py
test_postgresql.py
test_security.py
test_sqlite.py
test_userauditor.py

grep "import db_test_base" -l *.py
test_cgi.py
test_jinja2.py
test_mailgw.py
test_xmlrpc.py

grep "import memory\|from memory" -l *.py 
test_mailgw.py
test_memorydb.py


The remaining lines are an 2001 description from Richard,
which probably is outdated:

Structure of the tests:

   1   Test date classes
   1.1 Date
   1.2 Interval
   2   Set up schema
   3   Open with specific backend
   3.1 anydbm
   4   Create database base set (stati, priority, etc)
   5   Perform some actions
   6   Perform mail import
   6.1 text/plain
   6.2 multipart/mixed (with one text/plain)
   6.3 text/html
   6.4 multipart/alternative (with one text/plain)
   6.5 multipart/alternative (with no text/plain)