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"""Test embedding of IPython"""
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#-----------------------------------------------------------------------------
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# Copyright (C) 2013 The IPython Development Team
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#
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# Distributed under the terms of the BSD License. The full license is in
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# the file COPYING, distributed as part of this software.
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#-----------------------------------------------------------------------------
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#-----------------------------------------------------------------------------
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# Imports
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#-----------------------------------------------------------------------------
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import os
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import sys
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import nose.tools as nt
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from IPython.utils.process import process_handler
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from IPython.utils.tempdir import NamedFileInTemporaryDirectory
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from IPython.testing.decorators import skip_win32
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#-----------------------------------------------------------------------------
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# Tests
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#-----------------------------------------------------------------------------
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_sample_embed = b"""
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from __future__ import print_function
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import IPython
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a = 3
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b = 14
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print(a, '.', b)
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IPython.embed()
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print('bye!')
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"""
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_exit = b"exit\r"
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def test_ipython_embed():
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"""test that `IPython.embed()` works"""
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with NamedFileInTemporaryDirectory('file_with_embed.py') as f:
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f.write(_sample_embed)
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f.flush()
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f.close() # otherwise msft won't be able to read the file
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# run `python file_with_embed.py`
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cmd = [sys.executable, f.name]
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out, p = process_handler(cmd, lambda p: (p.communicate(_exit), p))
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std = out[0].decode('UTF-8')
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nt.assert_equal(p.returncode, 0)
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nt.assert_in('3 . 14', std)
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if os.name != 'nt':
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# TODO: Fix up our different stdout references, see issue gh-14
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nt.assert_in('IPython', std)
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nt.assert_in('bye!', std)
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@skip_win32
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def test_nest_embed():
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"""test that `IPython.embed()` is nestable"""
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from IPython.external import pexpect
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ipy_prompt = r']:' #ansi color codes give problems matching beyond this
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child = pexpect.spawn('%s -m IPython'%(sys.executable, ))
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child.expect(ipy_prompt)
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child.sendline("from __future__ import print_function")
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child.expect(ipy_prompt)
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child.sendline("import IPython")
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child.expect(ipy_prompt)
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child.sendline("ip0 = get_ipython()")
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#enter first nested embed
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child.sendline("IPython.embed()")
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#skip the banner until we get to a prompt
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try:
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prompted = -1
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while prompted != 0:
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prompted = child.expect([ipy_prompt, '\r\n'])
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except pexpect.TIMEOUT as e:
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print(e)
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#child.interact()
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child.sendline("embed1 = get_ipython()"); child.expect(ipy_prompt)
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child.sendline("print('true' if embed1 is not ip0 else 'false')")
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assert(child.expect(['true\r\n', 'false\r\n']) == 0)
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child.expect(ipy_prompt)
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child.sendline("print('true' if IPython.get_ipython() is embed1 else 'false')")
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assert(child.expect(['true\r\n', 'false\r\n']) == 0)
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child.expect(ipy_prompt)
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#enter second nested embed
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child.sendline("IPython.embed()")
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#skip the banner until we get to a prompt
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try:
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prompted = -1
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while prompted != 0:
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prompted = child.expect([ipy_prompt, '\r\n'])
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except pexpect.TIMEOUT as e:
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print(e)
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#child.interact()
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child.sendline("embed2 = get_ipython()"); child.expect(ipy_prompt)
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child.sendline("print('true' if embed2 is not embed1 else 'false')")
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assert(child.expect(['true\r\n', 'false\r\n']) == 0)
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child.expect(ipy_prompt)
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child.sendline("print('true' if embed2 is IPython.get_ipython() else 'false')")
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assert(child.expect(['true\r\n', 'false\r\n']) == 0)
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child.expect(ipy_prompt)
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child.sendline('exit')
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#back at first embed
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child.expect(ipy_prompt)
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child.sendline("print('true' if get_ipython() is embed1 else 'false')")
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assert(child.expect(['true\r\n', 'false\r\n']) == 0)
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child.expect(ipy_prompt)
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child.sendline("print('true' if IPython.get_ipython() is embed1 else 'false')")
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assert(child.expect(['true\r\n', 'false\r\n']) == 0)
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child.expect(ipy_prompt)
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child.sendline('exit')
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#back at launching scope
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child.expect(ipy_prompt)
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child.sendline("print('true' if get_ipython() is ip0 else 'false')")
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assert(child.expect(['true\r\n', 'false\r\n']) == 0)
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child.expect(ipy_prompt)
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child.sendline("print('true' if IPython.get_ipython() is ip0 else 'false')")
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assert(child.expect(['true\r\n', 'false\r\n']) == 0)
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child.expect(ipy_prompt)
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