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from __future__ import absolute_import
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from warnings import warn
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warn("IPython.utils.eventful has moved to traitlets.eventful")
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from traitlets.eventful import *
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# encoding: utf-8
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"""Tests for io.py"""
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# Copyright (c) IPython Development Team.
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# Distributed under the terms of the Modified BSD License.
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from __future__ import print_function
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from __future__ import absolute_import
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import io as stdlib_io
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import os.path
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import stat
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import sys
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from subprocess import Popen, PIPE
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import unittest
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import nose.tools as nt
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from IPython.testing.decorators import skipif, skip_win32
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from IPython.utils.io import Tee, capture_output
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from IPython.utils.py3compat import doctest_refactor_print, PY3
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from IPython.utils.tempdir import TemporaryDirectory
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if PY3:
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from io import StringIO
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else:
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from StringIO import StringIO
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def test_tee_simple():
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"Very simple check with stdout only"
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chan = StringIO()
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text = 'Hello'
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tee = Tee(chan, channel='stdout')
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print(text, file=chan)
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nt.assert_equal(chan.getvalue(), text+"\n")
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class TeeTestCase(unittest.TestCase):
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def tchan(self, channel, check='close'):
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trap = StringIO()
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chan = StringIO()
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text = 'Hello'
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std_ori = getattr(sys, channel)
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setattr(sys, channel, trap)
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tee = Tee(chan, channel=channel)
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print(text, end='', file=chan)
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setattr(sys, channel, std_ori)
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trap_val = trap.getvalue()
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nt.assert_equal(chan.getvalue(), text)
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if check=='close':
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tee.close()
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else:
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del tee
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def test(self):
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for chan in ['stdout', 'stderr']:
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for check in ['close', 'del']:
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self.tchan(chan, check)
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def test_io_init():
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"""Test that io.stdin/out/err exist at startup"""
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for name in ('stdin', 'stdout', 'stderr'):
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cmd = doctest_refactor_print("from IPython.utils import io;print io.%s.__class__"%name)
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p = Popen([sys.executable, '-c', cmd],
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stdout=PIPE)
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p.wait()
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classname = p.stdout.read().strip().decode('ascii')
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# __class__ is a reference to the class object in Python 3, so we can't
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# just test for string equality.
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assert 'IPython.utils.io.IOStream' in classname, classname
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def test_capture_output():
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"""capture_output() context works"""
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with capture_output() as io:
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print('hi, stdout')
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print('hi, stderr', file=sys.stderr)
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nt.assert_equal(io.stdout, 'hi, stdout\n')
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nt.assert_equal(io.stderr, 'hi, stderr\n')
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@ -1,70 +0,0 @@
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# IPython Notebook development
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## Development dependencies
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Developers of the IPython Notebook will need to install the following tools:
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* invoke
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* node.js
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* less (`npm install -g less`)
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## Components
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We are moving to a model where our JavaScript dependencies are managed using
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[bower](http://bower.io/). These packages are installed in `static/components`
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and committed into a separate git repo [ipython/ipython-components](ipython/ipython-components).
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Our dependencies are described in the file
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`static/components/bower.json`. To update our bower packages, run `bower install`
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in this directory.
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## less
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If you edit our `.less` files you will need to run the less compiler to build
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our minified css files. This can be done by running `python setup.py css` from the root of the repository.
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If you are working frequently with `.less` files please consider installing git hooks that
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rebuild the css files and corresponding maps in `${RepoRoot}/git-hooks/install-hooks.sh`.
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## JavaScript Documentation
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How to Build/ view the doc for JavaScript. JavaScript documentation should follow a
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style close to JSDoc one, so you should be able to build them with your favorite
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documentation builder. Still the documentation comment are mainly written to be read
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with YUI doc. You can either build a static version, or start a YUIdoc server that
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will live update the doc at every page request.
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To do so, you will need to install YUIdoc.
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### Install NodeJS
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Node is a browser less javascript interpreter. To install it please refer to
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the documentation for your platform. Install also NPM (node package manager) if
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it does not come bundled with it.
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### Get YUIdoc
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npm does by default install package in `./node_modules` instead of doing a
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system wide install. I'll leave you to yuidoc docs if you want to make a system
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wide install.
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First, cd into js directory :
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```bash
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cd IPython/html/static/js/
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# install yuidoc
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npm install yuidocjs
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```
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### Run YUIdoc server
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From IPython/html/static/js/
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```bash
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# run yuidoc for install dir
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./node_modules/yuidocjs/lib/cli.js --server .
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```
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Follow the instruction and the documentation should be available on localhost:3000
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Omitting `--server` will build a static version in the `out` folder by default.
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