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"""Tests for various magic functions.
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Needs to be run by nose (to make ipython session available).
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"""
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from __future__ import absolute_import
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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 tempfile
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import types
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from cStringIO import StringIO
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import nose.tools as nt
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from IPython.utils.path import get_long_path_name
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from IPython.testing import decorators as dec
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from IPython.testing import tools as tt
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#-----------------------------------------------------------------------------
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# Test functions begin
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#-----------------------------------------------------------------------------
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def test_rehashx():
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# clear up everything
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_ip = get_ipython()
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_ip.alias_manager.alias_table.clear()
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del _ip.db['syscmdlist']
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_ip.magic('rehashx')
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# Practically ALL ipython development systems will have more than 10 aliases
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yield (nt.assert_true, len(_ip.alias_manager.alias_table) > 10)
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for key, val in _ip.alias_manager.alias_table.iteritems():
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# we must strip dots from alias names
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nt.assert_true('.' not in key)
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# rehashx must fill up syscmdlist
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scoms = _ip.db['syscmdlist']
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yield (nt.assert_true, len(scoms) > 10)
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def test_magic_parse_options():
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"""Test that we don't mangle paths when parsing magic options."""
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ip = get_ipython()
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path = 'c:\\x'
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opts = ip.parse_options('-f %s' % path,'f:')[0]
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# argv splitting is os-dependent
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if os.name == 'posix':
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expected = 'c:x'
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else:
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expected = path
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nt.assert_equals(opts['f'], expected)
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def doctest_hist_f():
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"""Test %hist -f with temporary filename.
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In [9]: import tempfile
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In [10]: tfile = tempfile.mktemp('.py','tmp-ipython-')
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In [11]: %hist -nl -f $tfile 3
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In [13]: import os; os.unlink(tfile)
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"""
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def doctest_hist_r():
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"""Test %hist -r
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XXX - This test is not recording the output correctly. For some reason, in
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testing mode the raw history isn't getting populated. No idea why.
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Disabling the output checking for now, though at least we do run it.
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In [1]: 'hist' in _ip.lsmagic()
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Out[1]: True
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In [2]: x=1
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In [3]: %hist -rl 2
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x=1 # random
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%hist -r 2
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"""
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def doctest_hist_op():
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"""Test %hist -op
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In [1]: class b:
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...: pass
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...:
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In [2]: class s(b):
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...: def __str__(self):
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...: return 's'
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...:
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In [3]:
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In [4]: class r(b):
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...: def __repr__(self):
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...: return 'r'
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...:
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In [5]: class sr(s,r): pass
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...:
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In [6]:
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In [7]: bb=b()
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In [8]: ss=s()
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In [9]: rr=r()
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In [10]: ssrr=sr()
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In [11]: bb
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Out[11]: <...b instance at ...>
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In [12]: ss
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Out[12]: <...s instance at ...>
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In [13]:
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In [14]: %hist -op
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>>> class b:
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... pass
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...
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>>> class s(b):
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... def __str__(self):
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... return 's'
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...
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>>>
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>>> class r(b):
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... def __repr__(self):
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... return 'r'
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...
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>>> class sr(s,r): pass
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>>>
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>>> bb=b()
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>>> ss=s()
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>>> rr=r()
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>>> ssrr=sr()
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>>> bb
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<...b instance at ...>
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>>> ss
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<...s instance at ...>
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>>>
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"""
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def test_macro():
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ip = get_ipython()
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ip.history_manager.reset() # Clear any existing history.
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cmds = ["a=1", "def b():\n return a**2", "print(a,b())"]
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for i, cmd in enumerate(cmds, start=1):
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ip.history_manager.store_inputs(i, cmd)
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ip.magic("macro test 1-3")
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nt.assert_equal(ip.user_ns["test"].value, "\n".join(cmds)+"\n")
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# List macros.
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assert "test" in ip.magic("macro")
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def test_macro_run():
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"""Test that we can run a multi-line macro successfully."""
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ip = get_ipython()
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ip.history_manager.reset()
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cmds = ["a=10", "a+=1", "print a", "%macro test 2-3"]
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for cmd in cmds:
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ip.run_cell(cmd)
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nt.assert_equal(ip.user_ns["test"].value, "a+=1\nprint a\n")
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original_stdout = sys.stdout
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new_stdout = StringIO()
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sys.stdout = new_stdout
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try:
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ip.run_cell("test")
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nt.assert_true("12" in new_stdout.getvalue())
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ip.run_cell("test")
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nt.assert_true("13" in new_stdout.getvalue())
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finally:
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sys.stdout = original_stdout
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new_stdout.close()
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# XXX failing for now, until we get clearcmd out of quarantine. But we should
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# fix this and revert the skip to happen only if numpy is not around.
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#@dec.skipif_not_numpy
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@dec.skip_known_failure
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def test_numpy_clear_array_undec():
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from IPython.extensions import clearcmd
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_ip.ex('import numpy as np')
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_ip.ex('a = np.empty(2)')
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yield (nt.assert_true, 'a' in _ip.user_ns)
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_ip.magic('clear array')
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yield (nt.assert_false, 'a' in _ip.user_ns)
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# Multiple tests for clipboard pasting
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@dec.parametric
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def test_paste():
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_ip = get_ipython()
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def paste(txt, flags='-q'):
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"""Paste input text, by default in quiet mode"""
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hooks.clipboard_get = lambda : txt
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_ip.magic('paste '+flags)
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# Inject fake clipboard hook but save original so we can restore it later
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hooks = _ip.hooks
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user_ns = _ip.user_ns
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original_clip = hooks.clipboard_get
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try:
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# This try/except with an emtpy except clause is here only because
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# try/yield/finally is invalid syntax in Python 2.4. This will be
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# removed when we drop 2.4-compatibility, and the emtpy except below
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# will be changed to a finally.
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# Run tests with fake clipboard function
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user_ns.pop('x', None)
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paste('x=1')
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yield nt.assert_equal(user_ns['x'], 1)
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user_ns.pop('x', None)
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paste('>>> x=2')
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yield nt.assert_equal(user_ns['x'], 2)
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paste("""
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>>> x = [1,2,3]
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>>> y = []
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>>> for i in x:
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... y.append(i**2)
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...
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""")
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yield nt.assert_equal(user_ns['x'], [1,2,3])
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yield nt.assert_equal(user_ns['y'], [1,4,9])
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# Now, test that paste -r works
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user_ns.pop('x', None)
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yield nt.assert_false('x' in user_ns)
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_ip.magic('paste -r')
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yield nt.assert_equal(user_ns['x'], [1,2,3])
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# Also test paste echoing, by temporarily faking the writer
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w = StringIO()
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writer = _ip.write
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_ip.write = w.write
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code = """
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a = 100
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b = 200"""
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try:
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paste(code,'')
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out = w.getvalue()
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finally:
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_ip.write = writer
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yield nt.assert_equal(user_ns['a'], 100)
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yield nt.assert_equal(user_ns['b'], 200)
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yield nt.assert_equal(out, code+"\n## -- End pasted text --\n")
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finally:
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# This should be in a finally clause, instead of the bare except above.
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# Restore original hook
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hooks.clipboard_get = original_clip
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def test_time():
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_ip.magic('time None')
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def doctest_time():
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"""
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In [10]: %time None
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CPU times: user 0.00 s, sys: 0.00 s, total: 0.00 s
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Wall time: 0.00 s
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In [11]: def f(kmjy):
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....: %time print 2*kmjy
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In [12]: f(3)
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6
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CPU times: user 0.00 s, sys: 0.00 s, total: 0.00 s
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Wall time: 0.00 s
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"""
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def test_doctest_mode():
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"Toggle doctest_mode twice, it should be a no-op and run without error"
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_ip.magic('doctest_mode')
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_ip.magic('doctest_mode')
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def test_parse_options():
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"""Tests for basic options parsing in magics."""
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# These are only the most minimal of tests, more should be added later. At
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# the very least we check that basic text/unicode calls work OK.
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nt.assert_equal(_ip.parse_options('foo', '')[1], 'foo')
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nt.assert_equal(_ip.parse_options(u'foo', '')[1], u'foo')
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def test_dirops():
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"""Test various directory handling operations."""
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# curpath = lambda :os.path.splitdrive(os.getcwdu())[1].replace('\\','/')
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curpath = os.getcwdu
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startdir = os.getcwdu()
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ipdir = _ip.ipython_dir
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try:
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_ip.magic('cd "%s"' % ipdir)
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nt.assert_equal(curpath(), ipdir)
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_ip.magic('cd -')
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nt.assert_equal(curpath(), startdir)
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_ip.magic('pushd "%s"' % ipdir)
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nt.assert_equal(curpath(), ipdir)
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_ip.magic('popd')
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nt.assert_equal(curpath(), startdir)
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finally:
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os.chdir(startdir)
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def check_cpaste(code, should_fail=False):
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"""Execute code via 'cpaste' and ensure it was executed, unless
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should_fail is set.
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"""
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_ip.user_ns['code_ran'] = False
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src = StringIO()
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src.write('\n')
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src.write(code)
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src.write('\n--\n')
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src.seek(0)
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stdin_save = sys.stdin
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sys.stdin = src
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try:
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_ip.magic('cpaste')
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except:
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if not should_fail:
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raise AssertionError("Failure not expected : '%s'" %
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code)
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else:
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assert _ip.user_ns['code_ran']
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if should_fail:
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raise AssertionError("Failure expected : '%s'" % code)
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finally:
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sys.stdin = stdin_save
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def test_cpaste():
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"""Test cpaste magic"""
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def run():
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"""Marker function: sets a flag when executed.
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"""
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_ip.user_ns['code_ran'] = True
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return 'run' # return string so '+ run()' doesn't result in success
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tests = {'pass': ["> > > run()",
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">>> > run()",
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"+++ run()",
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"++ run()",
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" >>> run()"],
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'fail': ["+ + run()",
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" ++ run()"]}
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_ip.user_ns['run'] = run
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for code in tests['pass']:
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check_cpaste(code)
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for code in tests['fail']:
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check_cpaste(code, should_fail=True)
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def test_xmode():
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# Calling xmode three times should be a no-op
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xmode = _ip.InteractiveTB.mode
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for i in range(3):
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_ip.magic("xmode")
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nt.assert_equal(_ip.InteractiveTB.mode, xmode)
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def test_reset_hard():
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monitor = []
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class A(object):
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def __del__(self):
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monitor.append(1)
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def __repr__(self):
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return "<A instance>"
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_ip.user_ns["a"] = A()
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_ip.run_cell("a")
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nt.assert_equal(monitor, [])
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_ip.magic_reset("-f")
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nt.assert_equal(monitor, [1])
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class TestXdel(tt.TempFileMixin):
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def test_xdel(self):
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"""Test that references from %run are cleared by xdel."""
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src = ("class A(object):\n"
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" monitor = []\n"
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" def __del__(self):\n"
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" self.monitor.append(1)\n"
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"a = A()\n")
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self.mktmp(src)
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# %run creates some hidden references...
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_ip.magic("run %s" % self.fname)
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# ... as does the displayhook.
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_ip.run_cell("a")
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monitor = _ip.user_ns["A"].monitor
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nt.assert_equal(monitor, [])
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_ip.magic("xdel a")
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# Check that a's __del__ method has been called.
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nt.assert_equal(monitor, [1])
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def doctest_who():
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"""doctest for %who
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In [1]: %reset -f
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In [2]: alpha = 123
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In [3]: beta = 'beta'
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In [4]: %who int
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alpha
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In [5]: %who str
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beta
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In [6]: %whos
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Variable Type Data/Info
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----------------------------
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alpha int 123
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beta str beta
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In [7]: %who_ls
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Out[7]: ['alpha', 'beta']
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"""
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def doctest_precision():
|
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"""doctest for %precision
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|
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In [1]: f = get_ipython().shell.display_formatter.formatters['text/plain']
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In [2]: %precision 5
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Out[2]: u'%.5f'
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In [3]: f.float_format
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Out[3]: u'%.5f'
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In [4]: %precision %e
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Out[4]: u'%e'
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In [5]: f(3.1415927)
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Out[5]: u'3.141593e+00'
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"""
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