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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.core.management.commands import shell
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\ndef f():\n print(django.__version__)\nf()"
)
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__)
def test_ipython(self):
cmd = shell.Command()
mock_ipython = mock.Mock(start_ipython=mock.MagicMock())
with mock.patch.dict(sys.modules, {"IPython": mock_ipython}):
cmd.ipython({})
self.assertEqual(mock_ipython.start_ipython.mock_calls, [mock.call(argv=[])])
@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")
def test_bpython(self):
cmd = shell.Command()
mock_bpython = mock.Mock(embed=mock.MagicMock())
with mock.patch.dict(sys.modules, {"bpython": mock_bpython}):
cmd.bpython({})
self.assertEqual(mock_bpython.embed.mock_calls, [mock.call()])
@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")
def test_python(self):
cmd = shell.Command()
mock_code = mock.Mock(interact=mock.MagicMock())
with mock.patch.dict(sys.modules, {"code": mock_code}):
cmd.python({"no_startup": True})
self.assertEqual(mock_code.interact.mock_calls, [mock.call(local={})])
# [1] Patch select to prevent tests failing 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() toward the
# end of shell's handle() method.
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