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Python Open Source » Database » Modeling Framework 
Modeling Framework » Modeling 0.9 » Modeling » tests » test_AdaptorLayer.py
#! /usr/bin/env python
# -*- coding: iso-8859-1 -*-
#-----------------------------------------------------------------------------
# Modeling Framework: an Object-Relational Bridge for python
#
# Copyright (c) 2001-2004 Sbastien Bigaret <sbigaret@users.sourceforge.net>
# All rights reserved.
#
# This file is part of the Modeling Framework.
#
# This code is distributed under a "3-clause BSD"-style license;
# see the LICENSE file for details.
#-----------------------------------------------------------------------------

"""
Global tests for the Adaptor Layer

  CVS information

    $Id: test_AdaptorLayer.py 932 2004-07-20 06:21:57Z sbigaret $
"""
__version__='$Revision: 932 $'[11:-2]

import unittest, sys
import utils
if __name__ == "__main__":
  utils.fixpath()

from Modeling import ModelSet,Model
from Modeling.EditingContext import EditingContext
from Modeling.FetchSpecification import FetchSpecification
from Modeling.Qualifier import qualifierWithQualifierFormat
from Modeling import Adaptor
from Modeling import Database

from testPackages.AuthorBooks.Writer import Writer
from testPackages.AuthorBooks.Book import Book


# utilities
def concreteAdaptorChannels_are_closed(anEntityName, ec):
  "Returns 1 if they are all closed, 0 otherwise"
  fs=FetchSpecification(anEntityName)
  dbContext=ec.rootObjectStore().objectStoreForFetchSpecification(fs)
  return not dbContext.adaptorContext().hasOpenChannels()
  #for dbChannel in dbContext.registeredChannels():
  #  if dbChannel.adaptorChannel().isOpen():
  #    return 0
  #return 1

import os
if not os.environ.get('MDL_TRANSIENT_DB_CONNECTION'):
  os.environ['MDL_TRANSIENT_DB_CONNECTION']='True'
  
class Tests_AdaptorLayer_Global(unittest.TestCase):
  "Global tests for the Adaptor Layer"

  def test_01_adaptorChannels_are_closed(self):
    "[AdaptorLayer] adaptorChannels should be closed"

    # SELECT
    ec=EditingContext()
    fetchSpec=FetchSpecification(entityName='Writer')
    objects=ec.objectsWithFetchSpecification(fetchSpec)
    self.failUnless(concreteAdaptorChannels_are_closed('Writer', ec),
                    'Failed for SELECT')

    # INSERT
    w1=Writer()
    w2=Writer()
    w1.setLastName('test_insert1')
    w2.setLastName('test_insert2')
    ec.insertObject(w1); ec.insertObject(w2)
    ec.saveChanges()
    self.failUnless(concreteAdaptorChannels_are_closed('Writer', ec),
                    'Failed for INSERT')

    # UPDATE
    w1.setFirstName('test01')
    ec.saveChanges()
    self.failUnless(concreteAdaptorChannels_are_closed('Writer', ec),
                    'Failed for UPDATE')
    
    # DELETE
    ec.deleteObject(w2)
    ec.saveChanges()
    self.failUnless(concreteAdaptorChannels_are_closed('Writer', ec),
                    'Failed for DELETE')
    
    

  def tearDown(self):
    """
    Cleans up the Database after each tests
    """
    ec=EditingContext()
    w=Writer()
    dbChannel=ec.rootObjectStore().objectStoreForObject(w).availableChannel()
    channel=dbChannel.adaptorChannel()
    sqlExpr=channel.adaptorContext().adaptor().expressionClass()()
    sqlExpr.setStatement("delete from BOOK where id>4")
    channel.evaluateExpression(sqlExpr)
    sqlExpr.setStatement("delete from WRITER where id>3")
    channel.evaluateExpression(sqlExpr)
    
def usage(prgName):
  _usage="""%s [-vV] [-p] [-d <dbAdaptorName>]
Runs the tests for the Modeling package

Options
--------
  -v  Minimally verbose
  -V  Really verbose
  -h  Prints this message
  -p  enables profiling
  -d  sets the database adaptor to use: Postgresql (default), MySQL or SQLite

IMPORTANT: these tests requires that test_EditingContext_Global.py was
           previously executed with the '-r' option.

""" % prgName
  sys.stderr.write(_usage)


verbose=0
database_cfg='Postgresql.cfg'

def main(args):
  me=args[0]
  import getopt
  options, args = getopt.getopt(sys.argv[1:], 'vVpd:')
  global verbose, database_cfg

  profile=0
  for k, v in options:
    if k=='-h': usage(me); return 1
    if k=='-v': verbose=1; continue
    if k=='-V': verbose="Y"; continue
    if k=='-p': profile=1; continue
    if k=='-d':
      if v not in ('Postgresql', 'MySQL', 'SQLite'): usage(me); return 1
      database_cfg='%s.cfg'%v
      continue

  if args: usage(me); return 1

  author_books_model=ModelSet.defaultModelSet().modelNamed('AuthorBooks')
  Model.updateModelWithCFG(author_books_model, database_cfg)

  # MySQL specifics: change TIMESTAMP to DATETIME
  if database_cfg=='MySQL.cfg':
    author_books_model.entityNamed('Writer').attributeNamed('birthday').setExternalType('DATETIME')

  if profile:
    import profile
    profile.run('utils.run_suite(test_suite(), verbosity=verbose)',
                'profile.out')
    return 
  else:
      return utils.run_suite(test_suite(), verbosity=verbose)

def test_suite():
    suite = unittest.TestSuite()
    suite.addTest(unittest.makeSuite(Tests_AdaptorLayer_Global, "test_"))
    return suite

if __name__ == "__main__":
  errs = main(sys.argv)
  sys.exit(errs and 1 or 0)
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