Use activate instead of install for module activation

tests/scenario_account_dunning_letter.rst

@@ -8,25 +8,16 @@ Imports::
     >>> from dateutil.relativedelta import relativedelta
     >>> from decimal import Decimal
     >>> from proteus import config, Model, Wizard
+    >>> from trytond.tests.tools import activate_modules
     >>> from trytond.modules.company.tests.tools import create_company, \
     ...     get_company
     >>> from trytond.modules.account.tests.tools import create_fiscalyear, \
     ...     create_chart, get_accounts
     >>> today = datetime.date.today()
 
-Create database::
-
-    >>> config = config.set_trytond()
-    >>> config.pool.test = True
-
 Install account_dunning_letter::
 
-    >>> Module = Model.get('ir.module')
-    >>> module, = Module.find([
-    ...         ('name', '=', 'account_dunning_letter'),
-    ...         ])
-    >>> module.click('install')
-    >>> Wizard('ir.module.install_upgrade').execute('upgrade')
+    >>> config = activate_modules('account_dunning_letter')
 
 Create company::
 

tests/test_account_dunning_letter.py

@@ -4,8 +4,7 @@ import unittest
 import doctest
 import trytond.tests.test_tryton
 from trytond.tests.test_tryton import ModuleTestCase
-from trytond.tests.test_tryton import doctest_setup, doctest_teardown
-from trytond.tests.test_tryton import doctest_checker
+from trytond.tests.test_tryton import doctest_teardown, doctest_checker
 
 
 class AccountDunningLetterTestCase(ModuleTestCase):
@@ -18,7 +17,7 @@ def suite():
     suite.addTests(unittest.TestLoader().loadTestsFromTestCase(
         AccountDunningLetterTestCase))
     suite.addTests(doctest.DocFileSuite('scenario_account_dunning_letter.rst',
-            setUp=doctest_setup, tearDown=doctest_teardown, encoding='utf-8',
+            tearDown=doctest_teardown, encoding='utf-8',
             checker=doctest_checker,
             optionflags=doctest.REPORT_ONLY_FIRST_FAILURE))
     return suite