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#-----------------------------------------------------------------------------
# Copyright (C) 2012 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
import os
import sys
import unittest
import base64
from IPython.kernel import KernelClient
from IPython.terminal.console.interactiveshell import ZMQTerminalInteractiveShell
from IPython.utils.tempdir import TemporaryDirectory
from IPython.testing.tools import monkeypatch
from IPython.testing.decorators import skip_without
from IPython.utils.ipstruct import Struct
SCRIPT_PATH = os.path.join(
os.path.abspath(os.path.dirname(__file__)), 'writetofile.py')
class ZMQTerminalInteractiveShellTestCase(unittest.TestCase):
def setUp(self):
client = KernelClient()
self.shell = ZMQTerminalInteractiveShell(kernel_client=client)
self.raw = b'dummy data'
self.mime = 'image/png'
self.data = {self.mime: base64.encodestring(self.raw).decode('ascii')}
def test_no_call_by_default(self):
def raise_if_called(*args, **kwds):
assert False
shell = self.shell
shell.handle_image_PIL = raise_if_called
shell.handle_image_stream = raise_if_called
shell.handle_image_tempfile = raise_if_called
shell.handle_image_callable = raise_if_called
shell.handle_image(None, None) # arguments are dummy
@skip_without('PIL')
def test_handle_image_PIL(self):
import PIL.Image
open_called_with = []
show_called_with = []
def fake_open(arg):
open_called_with.append(arg)
return Struct(show=lambda: show_called_with.append(None))
with monkeypatch(PIL.Image, 'open', fake_open):
self.shell.handle_image_PIL(self.data, self.mime)
self.assertEqual(len(open_called_with), 1)
self.assertEqual(len(show_called_with), 1)
self.assertEqual(open_called_with[0].getvalue(), self.raw)
def check_handler_with_file(self, inpath, handler):
shell = self.shell
configname = '{0}_image_handler'.format(handler)
funcname = 'handle_image_{0}'.format(handler)
assert hasattr(shell, configname)
assert hasattr(shell, funcname)
with TemporaryDirectory() as tmpdir:
outpath = os.path.join(tmpdir, 'data')
cmd = [sys.executable, SCRIPT_PATH, inpath, outpath]
setattr(shell, configname, cmd)
getattr(shell, funcname)(self.data, self.mime)
# cmd is called and file is closed. So it's safe to open now.
with open(outpath, 'rb') as file:
transferred = file.read()
self.assertEqual(transferred, self.raw)
def test_handle_image_stream(self):
self.check_handler_with_file('-', 'stream')
def test_handle_image_tempfile(self):
self.check_handler_with_file('{file}', 'tempfile')
def test_handle_image_callable(self):
called_with = []
self.shell.callable_image_handler = called_with.append
self.shell.handle_image_callable(self.data, self.mime)
self.assertEqual(len(called_with), 1)
assert called_with[0] is self.data
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