django/tests/regressiontests/admin_scripts/tests.py

"""
A series of tests to establish that the command-line managment tools work as 
advertised - especially with regards to the handling of the DJANGO_SETTINGS_MODULE
and default settings.py files.
"""
import os
import unittest
import shutil

from django import conf, bin
from django.conf import settings

class AdminScriptTestCase(unittest.TestCase):
    def write_settings(self, filename, apps=None):
        test_dir = os.path.dirname(os.path.dirname(__file__)) 
        settings_file = open(os.path.join(test_dir,filename), 'w')
        settings_file.write('# Settings file automatically generated by regressiontests.admin_scripts test case\n')
        exports = [
            'DATABASE_ENGINE',
            'DATABASE_NAME',
            'DATABASE_USER',
            'DATABASE_PASSWORD',
            'DATABASE_HOST',
            'DATABASE_PORT',
            'ROOT_URLCONF'
        ]
        for s in exports:
            if hasattr(settings,s):
                settings_file.write("%s = '%s'\n" % (s, str(getattr(settings,s))))
                
        if apps is None:
            apps = ['django.contrib.auth', 'django.contrib.contenttypes', 'regressiontests.admin_scripts']

        if apps:
            settings_file.write("INSTALLED_APPS = %s\n" % apps)
        
        settings_file.close()
        
    def remove_settings(self, filename):
        test_dir = os.path.dirname(os.path.dirname(__file__)) 
        os.remove(os.path.join(test_dir, filename))
        # Also try to remove the pyc file; if it exists, it could
        # mess up later tests that depend upon the .py file not existing
        try:
            os.remove(os.path.join(test_dir, filename + 'c'))
        except OSError:
            pass
            
    def run_test(self, script, args, settings_file=None, apps=None):
        test_dir = os.path.dirname(os.path.dirname(__file__))
        project_dir = os.path.dirname(test_dir)
        base_dir = os.path.dirname(project_dir)
        
        # Build the command line
        cmd = 'python "%s"' % script
        cmd += ''.join(' %s' % arg for arg in args)
        
        # Remember the old environment
        old_django_settings_module = os.environ.get('DJANGO_SETTINGS_MODULE', None)
        old_python_path = os.environ.get('PYTHONPATH', None)
        old_cwd = os.getcwd()
        
        # Set the test environment
        if settings_file:
            os.environ['DJANGO_SETTINGS_MODULE'] = settings_file
        elif 'DJANGO_SETTINGS_MODULE' in os.environ:
            del os.environ['DJANGO_SETTINGS_MODULE']
        
        os.environ['PYTHONPATH'] = os.pathsep.join([project_dir,base_dir])
        
        # Move to the test directory and run
        os.chdir(test_dir)
        stdin, stdout, stderr = os.popen3(cmd)
        out, err = stdout.read(), stderr.read()
        
        # Restore the old environment
        if old_django_settings_module:
            os.environ['DJANGO_SETTINGS_MODULE'] = old_django_settings_module
        if old_python_path:
            os.environ['PYTHONPATH'] = old_python_path

        # Move back to the old working directory
        os.chdir(old_cwd)
        
        return out, err
        
    def run_django_admin(self, args, settings_file=None):
        bin_dir = os.path.dirname(bin.__file__)
        return self.run_test(os.path.join(bin_dir,'django-admin.py'), args, settings_file)
        
    def run_manage(self, args, settings_file=None):
        conf_dir = os.path.dirname(conf.__file__)
        template_manage_py = os.path.join(conf_dir, 'project_template', 'manage.py')

        test_dir = os.path.dirname(os.path.dirname(__file__)) 
        test_manage_py = os.path.join(test_dir, 'manage.py')
        shutil.copyfile(template_manage_py, test_manage_py)

        stdout, stderr = self.run_test('./manage.py', args, settings_file)

        # Cleanup - remove the generated manage.py script
        os.remove(test_manage_py)
        
        return stdout, stderr

    def assertNoOutput(self, stream):
        "Utility assertion: assert that the given stream is empty"
        self.assertEquals(len(stream), 0, "Stream should be empty: actually contains '%s'" % stream)
    def assertOutput(self, stream, msg):
        "Utility assertion: assert that the given message exists in the output"
        self.assertTrue(msg in stream, "'%s' does not match actual output text '%s'" % (msg, stream))

##########################################################################
# DJANGO ADMIN TESTS
# This first series of test classes checks the environment processing
# of the django-admin.py script
##########################################################################


class DjangoAdminNoSettings(AdminScriptTestCase):
    "A series of tests for django-admin.py when there is no settings.py file."
                
    def test_builtin_command(self):
        "no settings: django-admin builtin commands fail with an import error when no settings provided"
        args = ['sqlall','admin_scripts']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(out)
        self.assertOutput(err, 'environment variable DJANGO_SETTINGS_MODULE is undefined')
                
    def test_builtin_with_bad_settings(self):
        "no settings: django-admin builtin commands fail if settings file (from argument) doesn't exist"
        args = ['sqlall','--settings=regressiontests.bad_settings', 'admin_scripts']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Could not import settings 'regressiontests.bad_settings'")

    def test_builtin_with_bad_environment(self):
        "no settings: django-admin builtin commands fail if settings file (from environment) doesn't exist"
        args = ['sqlall','admin_scripts']
        out, err = self.run_django_admin(args,'regressiontests.bad_settings')
        self.assertNoOutput(out)
        self.assertOutput(err, "Could not import settings 'regressiontests.bad_settings'")


class DjangoAdminDefaultSettings(AdminScriptTestCase):
    """A series of tests for django-admin.py when using a settings.py file that
    contains the test application.
    """
    def setUp(self):
        self.write_settings('settings.py')
        
    def tearDown(self):
        self.remove_settings('settings.py')
            
    def test_builtin_command(self):
        "default: django-admin builtin commands fail with an import error when no settings provided"
        args = ['sqlall','admin_scripts']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(out)
        self.assertOutput(err, 'environment variable DJANGO_SETTINGS_MODULE is undefined')
        
    def test_builtin_with_settings(self):
        "default: django-admin builtin commands succeed if settings are provided as argument"
        args = ['sqlall','--settings=regressiontests.settings', 'admin_scripts']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(err)
        self.assertOutput(out, 'CREATE TABLE')

    def test_builtin_with_environment(self):
        "default: django-admin builtin commands succeed if settings are provided in the environment"
        args = ['sqlall','admin_scripts']
        out, err = self.run_django_admin(args,'regressiontests.settings')
        self.assertNoOutput(err)
        self.assertOutput(out, 'CREATE TABLE')

    def test_builtin_with_bad_settings(self):
        "default: django-admin builtin commands fail if settings file (from argument) doesn't exist"
        args = ['sqlall','--settings=regressiontests.bad_settings', 'admin_scripts']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Could not import settings 'regressiontests.bad_settings'")

    def test_builtin_with_bad_environment(self):
        "default: django-admin builtin commands fail if settings file (from environment) doesn't exist"
        args = ['sqlall','admin_scripts']
        out, err = self.run_django_admin(args,'regressiontests.bad_settings')
        self.assertNoOutput(out)
        self.assertOutput(err, "Could not import settings 'regressiontests.bad_settings'")

    def test_custom_command(self):
        "default: django-admin can't execute user commands"
        args = ['noargs_command']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Unknown command: 'noargs_command'")
            
    def test_custom_command_with_settings(self):
        "default: django-admin can't execute user commands, even if settings are provided as argument"
        args = ['noargs_command', '--settings=regressiontests.settings']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Unknown command: 'noargs_command'")
            
    def test_custom_command_with_environment(self):
        "default: django-admin can't execute user commands, even if settings are provided in environment"
        args = ['noargs_command']
        out, err = self.run_django_admin(args,'regressiontests.settings')
        self.assertNoOutput(out)
        self.assertOutput(err, "Unknown command: 'noargs_command'")

class DjangoAdminMinimalSettings(AdminScriptTestCase):
    """A series of tests for django-admin.py when using a settings.py file that
    doesn't contain the test application.
    """
    def setUp(self):
        self.write_settings('settings.py', apps=['django.contrib.auth','django.contrib.contenttypes'])
        
    def tearDown(self):
        self.remove_settings('settings.py')
        
    def test_builtin_command(self):
        "minimal: django-admin builtin commands fail with an import error when no settings provided"
        args = ['sqlall','admin_scripts']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(out)
        self.assertOutput(err, 'environment variable DJANGO_SETTINGS_MODULE is undefined')
        
    def test_builtin_with_settings(self):
        "minimal: django-admin builtin commands fail if settings are provided as argument"
        args = ['sqlall','--settings=regressiontests.settings', 'admin_scripts']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(out)
        self.assertOutput(err, 'App with label admin_scripts could not be found')

    def test_builtin_with_environment(self):
        "minimal: django-admin builtin commands fail if settings are provided in the environment"
        args = ['sqlall','admin_scripts']
        out, err = self.run_django_admin(args,'regressiontests.settings')
        self.assertNoOutput(out)
        self.assertOutput(err, 'App with label admin_scripts could not be found')

    def test_builtin_with_bad_settings(self):
        "minimal: django-admin builtin commands fail if settings file (from argument) doesn't exist"
        args = ['sqlall','--settings=regressiontests.bad_settings', 'admin_scripts']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Could not import settings 'regressiontests.bad_settings'")

    def test_builtin_with_bad_environment(self):
        "minimal: django-admin builtin commands fail if settings file (from environment) doesn't exist"
        args = ['sqlall','admin_scripts']
        out, err = self.run_django_admin(args,'regressiontests.bad_settings')
        self.assertNoOutput(out)
        self.assertOutput(err, "Could not import settings 'regressiontests.bad_settings'")
            
    def test_custom_command(self):
        "minimal: django-admin can't execute user commands"
        args = ['noargs_command']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Unknown command: 'noargs_command'")
            
    def test_custom_command_with_settings(self):
        "minimal: django-admin can't execute user commands, even if settings are provided as argument"
        args = ['noargs_command', '--settings=regressiontests.settings']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Unknown command: 'noargs_command'")
            
    def test_custom_command_with_environment(self):
        "minimal: django-admin can't execute user commands, even if settings are provided in environment"
        args = ['noargs_command']
        out, err = self.run_django_admin(args,'regressiontests.settings')
        self.assertNoOutput(out)
        self.assertOutput(err, "Unknown command: 'noargs_command'")

class DjangoAdminAlternateSettings(AdminScriptTestCase):
    """A series of tests for django-admin.py when using a settings file
    with a name other than 'settings.py'.
    """
    def setUp(self):
        self.write_settings('alternate_settings.py')
        
    def tearDown(self):
        self.remove_settings('alternate_settings.py')
            
    def test_builtin_command(self):
        "alternate: django-admin builtin commands fail with an import error when no settings provided"
        args = ['sqlall','admin_scripts']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(out)
        self.assertOutput(err, 'environment variable DJANGO_SETTINGS_MODULE is undefined')

    def test_builtin_with_settings(self):
        "alternate: django-admin builtin commands succeed if settings are provided as argument"
        args = ['sqlall','--settings=regressiontests.alternate_settings', 'admin_scripts']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(err)
        self.assertOutput(out, 'CREATE TABLE')

    def test_builtin_with_environment(self):
        "alternate: django-admin builtin commands succeed if settings are provided in the environment"
        args = ['sqlall','admin_scripts']
        out, err = self.run_django_admin(args,'regressiontests.alternate_settings')
        self.assertNoOutput(err)
        self.assertOutput(out, 'CREATE TABLE')

    def test_builtin_with_bad_settings(self):
        "alternate: django-admin builtin commands fail if settings file (from argument) doesn't exist"
        args = ['sqlall','--settings=regressiontests.bad_settings', 'admin_scripts']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Could not import settings 'regressiontests.bad_settings'")

    def test_builtin_with_bad_environment(self):
        "alternate: django-admin builtin commands fail if settings file (from environment) doesn't exist"
        args = ['sqlall','admin_scripts']
        out, err = self.run_django_admin(args,'regressiontests.bad_settings')
        self.assertNoOutput(out)
        self.assertOutput(err, "Could not import settings 'regressiontests.bad_settings'")

    def test_custom_command(self):
        "alternate: django-admin can't execute user commands"
        args = ['noargs_command']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Unknown command: 'noargs_command'")

    def test_custom_command_with_settings(self):
        "alternate: django-admin can't execute user commands, even if settings are provided as argument"
        args = ['noargs_command', '--settings=regressiontests.alternate_settings']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Unknown command: 'noargs_command'")

    def test_custom_command_with_environment(self):
        "alternate: django-admin can't execute user commands, even if settings are provided in environment"
        args = ['noargs_command']
        out, err = self.run_django_admin(args,'regressiontests.alternate_settings')
        self.assertNoOutput(out)
        self.assertOutput(err, "Unknown command: 'noargs_command'")


class DjangoAdminMultipleSettings(AdminScriptTestCase):
    """A series of tests for django-admin.py when multiple settings files
    (including the default 'settings.py') are available. The default settings
    file is insufficient for performing the operations described, so the 
    alternate settings must be used by the running script.
    """
    def setUp(self):
        self.write_settings('settings.py', apps=['django.contrib.auth','django.contrib.contenttypes'])
        self.write_settings('alternate_settings.py')
        
    def tearDown(self):
        self.remove_settings('settings.py')
        self.remove_settings('alternate_settings.py')
            
    def test_builtin_command(self):
        "alternate: django-admin builtin commands fail with an import error when no settings provided"
        args = ['sqlall','admin_scripts']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(out)
        self.assertOutput(err, 'environment variable DJANGO_SETTINGS_MODULE is undefined')

    def test_builtin_with_settings(self):
        "alternate: django-admin builtin commands succeed if settings are provided as argument"
        args = ['sqlall','--settings=regressiontests.alternate_settings', 'admin_scripts']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(err)
        self.assertOutput(out, 'CREATE TABLE')

    def test_builtin_with_environment(self):
        "alternate: django-admin builtin commands succeed if settings are provided in the environment"
        args = ['sqlall','admin_scripts']
        out, err = self.run_django_admin(args,'regressiontests.alternate_settings')
        self.assertNoOutput(err)
        self.assertOutput(out, 'CREATE TABLE')

    def test_builtin_with_bad_settings(self):
        "alternate: django-admin builtin commands fail if settings file (from argument) doesn't exist"
        args = ['sqlall','--settings=regressiontests.bad_settings', 'admin_scripts']
        out, err = self.run_django_admin(args)
        self.assertOutput(err, "Could not import settings 'regressiontests.bad_settings'")

    def test_builtin_with_bad_environment(self):
        "alternate: django-admin builtin commands fail if settings file (from environment) doesn't exist"
        args = ['sqlall','admin_scripts']
        out, err = self.run_django_admin(args,'regressiontests.bad_settings')
        self.assertNoOutput(out)
        self.assertOutput(err, "Could not import settings 'regressiontests.bad_settings'")

    def test_custom_command(self):
        "alternate: django-admin can't execute user commands"
        args = ['noargs_command']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Unknown command: 'noargs_command'")

    def test_custom_command_with_settings(self):
        "alternate: django-admin can't execute user commands, even if settings are provided as argument"
        args = ['noargs_command', '--settings=regressiontests.alternate_settings']
        out, err = self.run_django_admin(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Unknown command: 'noargs_command'")

    def test_custom_command_with_environment(self):
        "alternate: django-admin can't execute user commands, even if settings are provided in environment"
        args = ['noargs_command']
        out, err = self.run_django_admin(args,'regressiontests.alternate_settings')
        self.assertNoOutput(out)
        self.assertOutput(err, "Unknown command: 'noargs_command'")
        
##########################################################################
# MANAGE.PY TESTS
# This next series of test classes checks the environment processing
# of the generated manage.py script
##########################################################################

class ManageNoSettings(AdminScriptTestCase):
    "A series of tests for manage.py when there is no settings.py file."
                
    def test_builtin_command(self):
        "no settings: manage.py builtin commands fail with an import error when no settings provided"
        args = ['sqlall','admin_scripts']
        out, err = self.run_manage(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Can't find the file 'settings.py' in the directory containing './manage.py'")
                
    def test_builtin_with_bad_settings(self):
        "no settings: manage.py builtin commands fail if settings file (from argument) doesn't exist"
        args = ['sqlall','--settings=bad_settings', 'admin_scripts']
        out, err = self.run_manage(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Can't find the file 'settings.py' in the directory containing './manage.py'")

    def test_builtin_with_bad_environment(self):
        "no settings: manage.py builtin commands fail if settings file (from environment) doesn't exist"
        args = ['sqlall','admin_scripts']
        out, err = self.run_manage(args,'bad_settings')
        self.assertNoOutput(out)
        self.assertOutput(err, "Can't find the file 'settings.py' in the directory containing './manage.py'")


class ManageDefaultSettings(AdminScriptTestCase):
    """A series of tests for manage.py when using a settings.py file that
    contains the test application.
    """
    def setUp(self):
        self.write_settings('settings.py')
        
    def tearDown(self):
        self.remove_settings('settings.py')
            
    def test_builtin_command(self):
        "default: manage.py builtin commands succeed when default settings are appropriate"
        args = ['sqlall','admin_scripts']
        out, err = self.run_manage(args)
        self.assertNoOutput(err)
        self.assertOutput(out, 'CREATE TABLE')
        
    def test_builtin_with_settings(self):
        "default: manage.py builtin commands succeed if settings are provided as argument"
        args = ['sqlall','--settings=settings', 'admin_scripts']
        out, err = self.run_manage(args)
        self.assertNoOutput(err)
        self.assertOutput(out, 'CREATE TABLE')

    def test_builtin_with_environment(self):
        "default: manage.py builtin commands succeed if settings are provided in the environment"
        args = ['sqlall','admin_scripts']
        out, err = self.run_manage(args,'settings')
        self.assertNoOutput(err)
        self.assertOutput(out, 'CREATE TABLE')

    def test_builtin_with_bad_settings(self):
        "default: manage.py builtin commands succeed if settings file (from argument) doesn't exist"
        args = ['sqlall','--settings=bad_settings', 'admin_scripts']
        out, err = self.run_manage(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Could not import settings 'bad_settings'")

    def test_builtin_with_bad_environment(self):
        "default: manage.py builtin commands fail if settings file (from environment) doesn't exist"
        args = ['sqlall','admin_scripts']
        out, err = self.run_manage(args,'bad_settings')
        self.assertNoOutput(err)
        self.assertOutput(out, 'CREATE TABLE')

    def test_custom_command(self):
        "default: manage.py can execute user commands when default settings are appropriate"
        args = ['noargs_command']
        out, err = self.run_manage(args)
        self.assertNoOutput(err)
        self.assertOutput(out, "EXECUTE:NoArgsCommand")
            
    def test_custom_command_with_settings(self):
        "default: manage.py can execute user commands when settings are provided as argument"
        args = ['noargs_command', '--settings=settings']
        out, err = self.run_manage(args)
        self.assertNoOutput(err)
        self.assertOutput(out, "EXECUTE:NoArgsCommand")
            
    def test_custom_command_with_environment(self):
        "default: manage.py can execute user commands when settings are provided in environment"
        args = ['noargs_command']
        out, err = self.run_manage(args,'settings')
        self.assertNoOutput(err)
        self.assertOutput(out, "EXECUTE:NoArgsCommand")

class ManageMinimalSettings(AdminScriptTestCase):
    """A series of tests for manage.py when using a settings.py file that
    doesn't contain the test application.
    """
    def setUp(self):
        self.write_settings('settings.py', apps=['django.contrib.auth','django.contrib.contenttypes'])
        
    def tearDown(self):
        self.remove_settings('settings.py')
        
    def test_builtin_command(self):
        "minimal: manage.py builtin commands fail with an import error when no settings provided"
        args = ['sqlall','admin_scripts']
        out, err = self.run_manage(args)
        self.assertNoOutput(out)
        self.assertOutput(err, 'App with label admin_scripts could not be found')
        
    def test_builtin_with_settings(self):
        "minimal: manage.py builtin commands fail if settings are provided as argument"
        args = ['sqlall','--settings=settings', 'admin_scripts']
        out, err = self.run_manage(args)
        self.assertNoOutput(out)
        self.assertOutput(err, 'App with label admin_scripts could not be found')

    def test_builtin_with_environment(self):
        "minimal: manage.py builtin commands fail if settings are provided in the environment"
        args = ['sqlall','admin_scripts']
        out, err = self.run_manage(args,'settings')
        self.assertNoOutput(out)
        self.assertOutput(err, 'App with label admin_scripts could not be found')

    def test_builtin_with_bad_settings(self):
        "minimal: manage.py builtin commands fail if settings file (from argument) doesn't exist"
        args = ['sqlall','--settings=bad_settings', 'admin_scripts']
        out, err = self.run_manage(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Could not import settings 'bad_settings'")

    def test_builtin_with_bad_environment(self):
        "minimal: manage.py builtin commands fail if settings file (from environment) doesn't exist"
        args = ['sqlall','admin_scripts']
        out, err = self.run_manage(args,'bad_settings')
        self.assertNoOutput(out)
        self.assertOutput(err, 'App with label admin_scripts could not be found')
            
    def test_custom_command(self):
        "minimal: manage.py can't execute user commands without appropriate settings"
        args = ['noargs_command']
        out, err = self.run_manage(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Unknown command: 'noargs_command'")
            
    def test_custom_command_with_settings(self):
        "minimal: manage.py can't execute user commands, even if settings are provided as argument"
        args = ['noargs_command', '--settings=settings']
        out, err = self.run_manage(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Unknown command: 'noargs_command'")
            
    def test_custom_command_with_environment(self):
        "minimal: manage.py can't execute user commands, even if settings are provided in environment"
        args = ['noargs_command']
        out, err = self.run_manage(args,'settings')
        self.assertNoOutput(out)
        self.assertOutput(err, "Unknown command: 'noargs_command'")

class ManageAlternateSettings(AdminScriptTestCase):
    """A series of tests for manage.py when using a settings file
    with a name other than 'settings.py'.
    """
    def setUp(self):
        self.write_settings('alternate_settings.py')
        
    def tearDown(self):
        self.remove_settings('alternate_settings.py')
            
    def test_builtin_command(self):
        "alternate: manage.py builtin commands fail with an import error when no default settings provided"
        args = ['sqlall','admin_scripts']
        out, err = self.run_manage(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Can't find the file 'settings.py' in the directory containing './manage.py'")

    def test_builtin_with_settings(self):
        "alternate: manage.py builtin commands fail if settings are provided as argument but no defaults"
        args = ['sqlall','--settings=alternate_settings', 'admin_scripts']
        out, err = self.run_manage(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Can't find the file 'settings.py' in the directory containing './manage.py'")

    def test_builtin_with_environment(self):
        "alternate: manage.py builtin commands fail if settings are provided in the environment but no defaults"
        args = ['sqlall','admin_scripts']
        out, err = self.run_manage(args,'alternate_settings')
        self.assertNoOutput(out)
        self.assertOutput(err, "Can't find the file 'settings.py' in the directory containing './manage.py'")

    def test_builtin_with_bad_settings(self):
        "alternate: manage.py builtin commands fail if settings file (from argument) doesn't exist"
        args = ['sqlall','--settings=bad_settings', 'admin_scripts']
        out, err = self.run_manage(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Can't find the file 'settings.py' in the directory containing './manage.py'")

    def test_builtin_with_bad_environment(self):
        "alternate: manage.py builtin commands fail if settings file (from environment) doesn't exist"
        args = ['sqlall','admin_scripts']
        out, err = self.run_manage(args,'bad_settings')
        self.assertNoOutput(out)
        self.assertOutput(err, "Can't find the file 'settings.py' in the directory containing './manage.py'")

    def test_custom_command(self):
        "alternate: manage.py can't execute user commands"
        args = ['noargs_command']
        out, err = self.run_manage(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Can't find the file 'settings.py' in the directory containing './manage.py'")

    def test_custom_command_with_settings(self):
        "alternate: manage.py can't execute user commands, even if settings are provided as argument"
        args = ['noargs_command', '--settings=alternate_settings']
        out, err = self.run_manage(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Can't find the file 'settings.py' in the directory containing './manage.py'")

    def test_custom_command_with_environment(self):
        "alternate: manage.py can't execute user commands, even if settings are provided in environment"
        args = ['noargs_command']
        out, err = self.run_manage(args,'alternate_settings')
        self.assertNoOutput(out)
        self.assertOutput(err, "Can't find the file 'settings.py' in the directory containing './manage.py'")


class ManageMultipleSettings(AdminScriptTestCase):
    """A series of tests for manage.py when multiple settings files
    (including the default 'settings.py') are available. The default settings
    file is insufficient for performing the operations described, so the 
    alternate settings must be used by the running script.
    """
    def setUp(self):
        self.write_settings('settings.py', apps=['django.contrib.auth','django.contrib.contenttypes'])
        self.write_settings('alternate_settings.py')
        
    def tearDown(self):
        self.remove_settings('settings.py')
        self.remove_settings('alternate_settings.py')
            
    def test_builtin_command(self):
        "multiple: manage.py builtin commands fail with an import error when no settings provided"
        args = ['sqlall','admin_scripts']
        out, err = self.run_manage(args)
        self.assertNoOutput(out)
        self.assertOutput(err, 'App with label admin_scripts could not be found.')

    def test_builtin_with_settings(self):
        "multiple: manage.py builtin commands succeed if settings are provided as argument"
        args = ['sqlall','--settings=alternate_settings', 'admin_scripts']
        out, err = self.run_manage(args)
        self.assertNoOutput(err)
        self.assertOutput(out, 'CREATE TABLE')

    def test_builtin_with_environment(self):
        "multiple: manage.py builtin commands fail if settings are provided in the environment"
        # FIXME: This doesn't seem to be the correct output.
        args = ['sqlall','admin_scripts']
        out, err = self.run_manage(args,'alternate_settings')
        self.assertNoOutput(out)
        self.assertOutput(err, 'App with label admin_scripts could not be found.')

    def test_builtin_with_bad_settings(self):
        "multiple: manage.py builtin commands fail if settings file (from argument) doesn't exist"
        args = ['sqlall','--settings=bad_settings', 'admin_scripts']
        out, err = self.run_manage(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Could not import settings 'bad_settings'")

    def test_builtin_with_bad_environment(self):
        "multiple: manage.py builtin commands fail if settings file (from environment) doesn't exist"
        args = ['sqlall','admin_scripts']
        out, err = self.run_manage(args,'bad_settings')
        self.assertNoOutput(out)
        self.assertOutput(err, "App with label admin_scripts could not be found")

    def test_custom_command(self):
        "multiple: manage.py can't execute user commands using default settings"
        args = ['noargs_command']
        out, err = self.run_manage(args)
        self.assertNoOutput(out)
        self.assertOutput(err, "Unknown command: 'noargs_command'")

    def test_custom_command_with_settings(self):
        "multiple: manage.py can execute user commands if settings are provided as argument"
        args = ['noargs_command', '--settings=alternate_settings']
        out, err = self.run_manage(args)
        self.assertNoOutput(err)
        self.assertOutput(out, "EXECUTE:NoArgsCommand")

    def test_custom_command_with_environment(self):
        "multiple: manage.py can execute user commands if settings are provided in environment"
        args = ['noargs_command']
        out, err = self.run_manage(args,'alternate_settings')
        self.assertNoOutput(out)
        self.assertOutput(err, "Unknown command: 'noargs_command'")

##########################################################################
# COMMAND PROCESSING TESTS
# Check that user-space commands are correctly handled - in particular,
# that arguments to the commands are correctly parsed and processed.
##########################################################################

class CommandTypes(AdminScriptTestCase):
    "Tests for the various types of base command types that can be defined."
    def setUp(self):
        self.write_settings('settings.py')
        
    def tearDown(self):
        self.remove_settings('settings.py')
    
    def test_base_command(self):
        "User BaseCommands can execute when a label is provided"
        args = ['base_command','testlabel']
        out, err = self.run_manage(args)
        self.assertNoOutput(err)
        self.assertOutput(out, "EXECUTE:BaseCommand labels=('testlabel',), options=[('pythonpath', None), ('settings', None), ('traceback', None)]")
        
    def test_base_command_no_label(self):
        "User BaseCommands can execute when no labels are provided"
        args = ['base_command']
        out, err = self.run_manage(args)
        self.assertNoOutput(err)
        self.assertOutput(out, "EXECUTE:BaseCommand labels=(), options=[('pythonpath', None), ('settings', None), ('traceback', None)]")

    def test_base_command_multiple_label(self):
        "User BaseCommands can execute when no labels are provided"
        args = ['base_command','testlabel','anotherlabel']
        out, err = self.run_manage(args)
        self.assertNoOutput(err)
        self.assertOutput(out, "EXECUTE:BaseCommand labels=('testlabel', 'anotherlabel'), options=[('pythonpath', None), ('settings', None), ('traceback', None)]")
                
    def test_noargs(self):
        "NoArg Commands can be executed"
        args = ['noargs_command']
        out, err = self.run_manage(args)
        self.assertNoOutput(err)
        self.assertOutput(out, "EXECUTE:NoArgsCommand options=[('pythonpath', None), ('settings', None), ('traceback', None)]")

    def test_noargs_with_args(self):
        "NoArg Commands raise an error if an argument is provided"
        args = ['noargs_command','argument']
        out, err = self.run_manage(args)
        self.assertOutput(err, "Error: Command doesn't accept any arguments")
        
    def test_app_command(self):
        "User AppCommands can execute when a single app name is provided"
        args = ['app_command', 'auth']
        out, err = self.run_manage(args)
        self.assertNoOutput(err)
        self.assertOutput(out, "EXECUTE:AppCommand app=<module 'django.contrib.auth.models'")
        self.assertOutput(out, os.sep.join(['django','contrib','auth','models.pyc']) + "'>, options=[('pythonpath', None), ('settings', None), ('traceback', None)]")

    def test_app_command_no_apps(self):
        "User AppCommands raise an error when no app name is provided"
        args = ['app_command']
        out, err = self.run_manage(args)
        self.assertOutput(err, 'Error: Enter at least one appname.')

    def test_app_command_multiple_apps(self):
        "User AppCommands raise an error when multiple app names are provided"
        args = ['app_command','auth','contenttypes']
        out, err = self.run_manage(args)
        self.assertNoOutput(err)
        self.assertOutput(out, "EXECUTE:AppCommand app=<module 'django.contrib.auth.models'")
        self.assertOutput(out, os.sep.join(['django','contrib','auth','models.pyc']) + "'>, options=[('pythonpath', None), ('settings', None), ('traceback', None)]")
        self.assertOutput(out, "EXECUTE:AppCommand app=<module 'django.contrib.contenttypes.models'")
        self.assertOutput(out, os.sep.join(['django','contrib','contenttypes','models.pyc']) + "'>, options=[('pythonpath', None), ('settings', None), ('traceback', None)]")

    def test_app_command_invalid_appname(self):
        "User AppCommands can execute when a single app name is provided"
        args = ['app_command', 'NOT_AN_APP']
        out, err = self.run_manage(args)
        self.assertOutput(err, "App with label NOT_AN_APP could not be found")
            
    def test_app_command_some_invalid_appnames(self):
        "User AppCommands can execute when some of the provided app names are invalid"
        args = ['app_command', 'auth', 'NOT_AN_APP']
        out, err = self.run_manage(args)
        self.assertOutput(err, "App with label NOT_AN_APP could not be found")

    def test_label_command(self):
        "User LabelCommands can execute when a label is provided"
        args = ['label_command','testlabel']
        out, err = self.run_manage(args)
        self.assertNoOutput(err)
        self.assertOutput(out, "EXECUTE:LabelCommand label=testlabel, options=[('pythonpath', None), ('settings', None), ('traceback', None)]")
        
    def test_label_command_no_label(self):
        "User LabelCommands raise an error if no label is provided"
        args = ['label_command']
        out, err = self.run_manage(args)
        self.assertOutput(err, 'Enter at least one label')

    def test_label_command_multiple_label(self):
        "User LabelCommands are executed multiple times if multiple labels are provided"
        args = ['label_command','testlabel','anotherlabel']
        out, err = self.run_manage(args)
        self.assertNoOutput(err)
        self.assertOutput(out, "EXECUTE:LabelCommand label=testlabel, options=[('pythonpath', None), ('settings', None), ('traceback', None)]")
        self.assertOutput(out, "EXECUTE:LabelCommand label=anotherlabel, options=[('pythonpath', None), ('settings', None), ('traceback', None)]")