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import sys
import unittest
from unittest import mock
from django import __version__
from django.core.management import CommandError, call_command
from django.test import SimpleTestCase
from django.test.utils import captured_stdin, captured_stdout
class ShellCommandTestCase(SimpleTestCase):
script_globals = 'print("__name__" in globals())'
script_with_inline_function = (
'import django\n'
'def f():\n'
' print(django.__version__)\n'
'f()'
)
def test_command_option(self):
with self.assertLogs('test', 'INFO') as cm:
call_command(
'shell',
command=(
'import django; from logging import getLogger; '
'getLogger("test").info(django.__version__)'
),
)
self.assertEqual(cm.records[0].getMessage(), __version__)
def test_command_option_globals(self):
with captured_stdout() as stdout:
call_command('shell', command=self.script_globals)
self.assertEqual(stdout.getvalue().strip(), 'True')
def test_command_option_inline_function_call(self):
with captured_stdout() as stdout:
call_command('shell', command=self.script_with_inline_function)
self.assertEqual(stdout.getvalue().strip(), __version__)
@unittest.skipIf(sys.platform == 'win32', "Windows select() doesn't support file descriptors.")
@mock.patch('django.core.management.commands.shell.select')
def test_stdin_read(self, select):
with captured_stdin() as stdin, captured_stdout() as stdout:
stdin.write('print(100)\n')
stdin.seek(0)
call_command('shell')
self.assertEqual(stdout.getvalue().strip(), '100')
@unittest.skipIf(
sys.platform == 'win32',
"Windows select() doesn't support file descriptors.",
)
@mock.patch('django.core.management.commands.shell.select') # [1]
def test_stdin_read_globals(self, select):
with captured_stdin() as stdin, captured_stdout() as stdout:
stdin.write(self.script_globals)
stdin.seek(0)
call_command('shell')
self.assertEqual(stdout.getvalue().strip(), 'True')
@unittest.skipIf(
sys.platform == 'win32',
"Windows select() doesn't support file descriptors.",
)
@mock.patch('django.core.management.commands.shell.select') # [1]
def test_stdin_read_inline_function_call(self, select):
with captured_stdin() as stdin, captured_stdout() as stdout:
stdin.write(self.script_with_inline_function)
stdin.seek(0)
call_command('shell')
self.assertEqual(stdout.getvalue().strip(), __version__)
@mock.patch('django.core.management.commands.shell.select.select') # [1]
@mock.patch.dict('sys.modules', {'IPython': None})
def test_shell_with_ipython_not_installed(self, select):
select.return_value = ([], [], [])
with self.assertRaisesMessage(CommandError, "Couldn't import ipython interface."):
call_command('shell', interface='ipython')
@mock.patch('django.core.management.commands.shell.select.select') # [1]
@mock.patch.dict('sys.modules', {'bpython': None})
def test_shell_with_bpython_not_installed(self, select):
select.return_value = ([], [], [])
with self.assertRaisesMessage(CommandError, "Couldn't import bpython interface."):
call_command('shell', interface='bpython')
# [1] Patch select to prevent tests failing when when the test suite is run
# in parallel mode. The tests are run in a subprocess and the subprocess's
# stdin is closed and replaced by /dev/null. Reading from /dev/null always
# returns EOF and so select always shows that sys.stdin is ready to read.
# This causes problems because of the call to select.select() towards the
# end of shell's handle() method.
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