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"""Tests for the key interactiveshell module, where the main ipython class is defined.
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"""
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#-----------------------------------------------------------------------------
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# Module imports
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#-----------------------------------------------------------------------------
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# stdlib
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import os
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import shutil
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import tempfile
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# third party
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import nose.tools as nt
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# our own packages
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from IPython.testing import decorators as dec
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from IPython.testing.globalipapp import get_ipython
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#-----------------------------------------------------------------------------
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# Globals
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#-----------------------------------------------------------------------------
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# Get the public instance of IPython
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ip = get_ipython()
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#-----------------------------------------------------------------------------
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# Test functions
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#-----------------------------------------------------------------------------
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@dec.parametric
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def test_reset():
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"""reset must clear most namespaces."""
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# The number of variables in the private user_ns_hidden is not zero, but it
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# should be constant regardless of what we do
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nvars_config_ns = len(ip.user_ns_hidden)
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# Check that reset runs without error
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ip.reset()
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# Once we've reset it (to clear of any junk that might have been there from
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# other tests, we can count how many variables are in the user's namespace
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nvars_user_ns = len(ip.user_ns)
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# Now add a few variables to user_ns, and check that reset clears them
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ip.user_ns['x'] = 1
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ip.user_ns['y'] = 1
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ip.reset()
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# Finally, check that all namespaces have only as many variables as we
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# expect to find in them:
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for ns in ip.ns_refs_table:
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if ns is ip.user_ns:
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nvars_expected = nvars_user_ns
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elif ns is ip.user_ns_hidden:
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nvars_expected = nvars_config_ns
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else:
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nvars_expected = 0
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yield nt.assert_equals(len(ns), nvars_expected)
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# Tests for reporting of exceptions in various modes, handling of SystemExit,
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# and %tb functionality. This is really a mix of testing ultraTB and interactiveshell.
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def doctest_tb_plain():
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"""
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In [18]: xmode plain
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Exception reporting mode: Plain
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In [19]: run simpleerr.py
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Traceback (most recent call last):
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...line 32, in <module>
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bar(mode)
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...line 16, in bar
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div0()
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...line 8, in div0
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x/y
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ZeroDivisionError: integer division or modulo by zero
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"""
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def doctest_tb_context():
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"""
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In [3]: xmode context
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Exception reporting mode: Context
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In [4]: run simpleerr.py
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---------------------------------------------------------------------------
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ZeroDivisionError Traceback (most recent call last)
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<BLANKLINE>
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... in <module>()
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30 mode = 'div'
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31
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---> 32 bar(mode)
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33
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34
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<BLANKLINE>
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... in bar(mode)
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14 "bar"
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15 if mode=='div':
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---> 16 div0()
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17 elif mode=='exit':
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18 try:
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<BLANKLINE>
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... in div0()
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6 x = 1
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7 y = 0
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----> 8 x/y
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9
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10 def sysexit(stat, mode):
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<BLANKLINE>
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ZeroDivisionError: integer division or modulo by zero
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"""
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def doctest_tb_verbose():
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"""
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In [5]: xmode verbose
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Exception reporting mode: Verbose
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In [6]: run simpleerr.py
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---------------------------------------------------------------------------
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ZeroDivisionError Traceback (most recent call last)
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<BLANKLINE>
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... in <module>()
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30 mode = 'div'
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31
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---> 32 bar(mode)
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global bar = <function bar at ...>
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global mode = 'div'
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33
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34
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<BLANKLINE>
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... in bar(mode='div')
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14 "bar"
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15 if mode=='div':
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---> 16 div0()
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global div0 = <function div0 at ...>
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17 elif mode=='exit':
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18 try:
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<BLANKLINE>
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... in div0()
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6 x = 1
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7 y = 0
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----> 8 x/y
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x = 1
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y = 0
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9
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10 def sysexit(stat, mode):
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<BLANKLINE>
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ZeroDivisionError: integer division or modulo by zero
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"""
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def doctest_tb_sysexit():
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"""
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In [17]: %xmode plain
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Exception reporting mode: Plain
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In [18]: %run simpleerr.py exit
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An exception has occurred, use %tb to see the full traceback.
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SystemExit: (1, 'Mode = exit')
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In [19]: %run simpleerr.py exit 2
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An exception has occurred, use %tb to see the full traceback.
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SystemExit: (2, 'Mode = exit')
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In [20]: %tb
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Traceback (most recent call last):
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File ... in <module>
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bar(mode)
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File ... line 22, in bar
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sysexit(stat, mode)
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File ... line 11, in sysexit
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raise SystemExit(stat, 'Mode = %s' % mode)
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SystemExit: (2, 'Mode = exit')
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In [21]: %xmode context
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Exception reporting mode: Context
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In [22]: %tb
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---------------------------------------------------------------------------
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SystemExit Traceback (most recent call last)
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<BLANKLINE>
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...<module>()
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30 mode = 'div'
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31
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---> 32 bar(mode)
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33
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34
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<BLANKLINE>
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...bar(mode)
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20 except:
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21 stat = 1
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---> 22 sysexit(stat, mode)
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23 else:
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24 raise ValueError('Unknown mode')
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<BLANKLINE>
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...sysexit(stat, mode)
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9
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10 def sysexit(stat, mode):
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---> 11 raise SystemExit(stat, 'Mode = %s' % mode)
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12
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13 def bar(mode):
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<BLANKLINE>
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SystemExit: (2, 'Mode = exit')
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In [23]: %xmode verbose
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Exception reporting mode: Verbose
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In [24]: %tb
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---------------------------------------------------------------------------
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SystemExit Traceback (most recent call last)
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<BLANKLINE>
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... in <module>()
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30 mode = 'div'
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31
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---> 32 bar(mode)
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global bar = <function bar at ...>
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global mode = 'exit'
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33
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34
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<BLANKLINE>
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... in bar(mode='exit')
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20 except:
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21 stat = 1
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---> 22 sysexit(stat, mode)
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global sysexit = <function sysexit at ...>
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stat = 2
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mode = 'exit'
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23 else:
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24 raise ValueError('Unknown mode')
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<BLANKLINE>
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... in sysexit(stat=2, mode='exit')
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9
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10 def sysexit(stat, mode):
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---> 11 raise SystemExit(stat, 'Mode = %s' % mode)
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global SystemExit = undefined
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stat = 2
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mode = 'exit'
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12
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13 def bar(mode):
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<BLANKLINE>
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SystemExit: (2, 'Mode = exit')
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"""
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def test_runlines():
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import textwrap
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ip.runlines(['a = 10', 'a+=1'])
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ip.runlines('assert a == 11\nassert 1')
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nt.assert_equals(ip.user_ns['a'], 11)
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complex = textwrap.dedent("""
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if 1:
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print "hello"
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if 1:
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print "world"
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if 2:
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print "foo"
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if 3:
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print "bar"
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if 4:
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print "bar"
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""")
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# Simply verifies that this kind of input is run
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ip.runlines(complex)
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def test_db():
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"""Test the internal database used for variable persistence."""
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ip.db['__unittest_'] = 12
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nt.assert_equals(ip.db['__unittest_'], 12)
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del ip.db['__unittest_']
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assert '__unittest_' not in ip.db
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