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1 """
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2 nose plugin for easy testing of django projects and apps. Sets up a test
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3 database (or schema) and installs apps from test settings file before tests
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4 are run, and tears the test database (or schema) down after all tests are run.
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5 """
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6
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7 import logging
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8 import os, sys
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9 import re
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10
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11 from nose.plugins import Plugin
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12 import nose.case
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13
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14 # Force settings.py pointer
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15 # search the current working directory and all parent directories to find
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16 # the settings file
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17 from nose.importer import add_path
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18 os.environ['DJANGO_SETTINGS_MODULE'] = 'settings'
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19 def get_SETTINGS_PATH():
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20 cwd = os.getcwd()
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21 while cwd:
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22 if 'settings.py' in os.listdir(cwd):
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23 break
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24 cwd = os.path.split(cwd)[0]
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25 if cwd == '/':
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26 return None
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27 return cwd
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28 SETTINGS_PATH = get_SETTINGS_PATH()
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29
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30 log = logging.getLogger('nose.plugins.nosedjango')
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31
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32 class NoseDjango(Plugin):
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33 """
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34 Enable to set up django test environment before running all tests, and
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35 tear it down after all tests. If the django database engine in use is not
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36 sqlite3, one or both of --django-test-db or django-test-schema must be
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37 specified.
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38
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39 Note that your django project must be on PYTHONPATH for the settings file
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40 to be loaded. The plugin will help out by placing the nose working dir
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41 into sys.path if it isn't already there, unless the -P
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42 (--no-path-adjustment) argument is set.
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43 """
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44 name = 'django'
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45
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46 def configure(self, options, conf):
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47 Plugin.configure(self, options, conf)
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48 self.verbosity = conf.verbosity
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49
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50 def begin(self):
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51 """Create the test database and schema, if needed, and switch the
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52 connection over to that database. Then call install() to install
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53 all apps listed in the loaded settings module.
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54 """
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55 # Add the working directory (and any package parents) to sys.path
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56 # before trying to import django modules; otherwise, they won't be
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57 # able to find project.settings if the working dir is project/ or
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58 # project/..
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59
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60 if not SETTINGS_PATH:
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61 sys.stderr.write("Can't find Django settings file!\n")
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62 # short circuit if no settings file can be found
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63 return
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64
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65 if self.conf.addPaths:
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66 map(add_path, self.conf.where)
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67
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68 add_path(SETTINGS_PATH)
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69 sys.path.append(SETTINGS_PATH)
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70 import settings
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71 settings.DEBUG = False # I have no idea why Django does this, but it does
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72 from django.core import mail
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73 self.mail = mail
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74 from django.conf import settings
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75 from django.core import management
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76 from django.test.utils import setup_test_environment
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77 from django.db import connection
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78
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79 self.old_db = settings.DATABASE_NAME
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80
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81 # setup the test env for each test case
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82 setup_test_environment()
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83 connection.creation.create_test_db(verbosity=self.verbosity)
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84
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85 # exit the setup phase and let nose do it's thing
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86
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87 def beforeTest(self, test):
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88
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89 if not SETTINGS_PATH:
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90 # short circuit if no settings file can be found
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91 return
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92
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93 from django.core.management import call_command
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94 call_command('flush', verbosity=0, interactive=False)
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95
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96 if isinstance(test, nose.case.Test) and \
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97 isinstance(test.test, nose.case.MethodTestCase) and \
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98 hasattr(test.context, 'fixtures'):
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99 # We have to use this slightly awkward syntax due to the fact
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100 # that we're using *args and **kwargs together.
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101 call_command('loaddata', *test.context.fixtures, **{'verbosity': 0})
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102 self.mail.outbox = []
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103
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104 def finalize(self, result=None):
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105 """
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106 Clean up any created database and schema.
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107 """
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108 if not SETTINGS_PATH:
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109 # short circuit if no settings file can be found
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110 return
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111
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112 from django.test.utils import teardown_test_environment
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113 from django.db import connection
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114 connection.creation.destroy_test_db(self.old_db, verbosity=self.verbosity)
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115 teardown_test_environment()
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