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"""
A series of tests to establish that the command-line bash completion works.
"""
import os
import sys
import unittest
from django.apps import apps
from django.core.management import ManagementUtility
from django.test.utils import captured_stdout
class BashCompletionTests(unittest.TestCase):
"""
Testing the Python level bash completion code.
This requires setting up the environment as if we got passed data
from bash.
"""
def setUp(self):
self.old_DJANGO_AUTO_COMPLETE = os.environ.get('DJANGO_AUTO_COMPLETE')
os.environ['DJANGO_AUTO_COMPLETE'] = '1'
def tearDown(self):
if self.old_DJANGO_AUTO_COMPLETE:
os.environ['DJANGO_AUTO_COMPLETE'] = self.old_DJANGO_AUTO_COMPLETE
else:
del os.environ['DJANGO_AUTO_COMPLETE']
def _user_input(self, input_str):
"""
Set the environment and the list of command line arguments.
This sets the bash variables $COMP_WORDS and $COMP_CWORD. The former is
an array consisting of the individual words in the current command
line, the latter is the index of the current cursor position, so in
case a word is completed and the cursor is placed after a whitespace,
$COMP_CWORD must be incremented by 1:
* 'django-admin start' -> COMP_CWORD=1
* 'django-admin startproject' -> COMP_CWORD=1
* 'django-admin startproject ' -> COMP_CWORD=2
"""
os.environ['COMP_WORDS'] = input_str
idx = len(input_str.split(' ')) - 1 # Index of the last word
comp_cword = idx + 1 if input_str.endswith(' ') else idx
os.environ['COMP_CWORD'] = str(comp_cword)
sys.argv = input_str.split()
def _run_autocomplete(self):
util = ManagementUtility(argv=sys.argv)
with captured_stdout() as stdout:
try:
util.autocomplete()
except SystemExit:
pass
return stdout.getvalue().strip().split('\n')
def test_django_admin_py(self):
"django_admin.py will autocomplete option flags"
self._user_input('django-admin sqlmigrate --verb')
output = self._run_autocomplete()
self.assertEqual(output, ['--verbosity='])
def test_manage_py(self):
"manage.py will autocomplete option flags"
self._user_input('manage.py sqlmigrate --verb')
output = self._run_autocomplete()
self.assertEqual(output, ['--verbosity='])
def test_custom_command(self):
"A custom command can autocomplete option flags"
self._user_input('django-admin test_command --l')
output = self._run_autocomplete()
self.assertEqual(output, ['--list'])
def test_subcommands(self):
"Subcommands can be autocompleted"
self._user_input('django-admin sql')
output = self._run_autocomplete()
self.assertEqual(output, ['sqlflush sqlmigrate sqlsequencereset'])
def test_completed_subcommand(self):
"Show option flags in case a subcommand is completed"
self._user_input('django-admin startproject ') # Trailing whitespace
output = self._run_autocomplete()
for item in output:
self.assertTrue(item.startswith('--'))
def test_help(self):
"No errors, just an empty list if there are no autocomplete options"
self._user_input('django-admin help --')
output = self._run_autocomplete()
self.assertEqual(output, [''])
def test_app_completion(self):
"Application names will be autocompleted for an AppCommand"
self._user_input('django-admin sqlmigrate a')
output = self._run_autocomplete()
a_labels = sorted(app_config.label
for app_config in apps.get_app_configs()
if app_config.label.startswith('a'))
self.assertEqual(output, a_labels)
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