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# -*- coding: utf-8 -*-
"""Tests for the key interactiveshell module.
Historically the main classes in interactiveshell have been under-tested. This
module should grow as many single-method tests as possible to trap many of the
recurring bugs we seem to encounter with high-level interaction.
"""
# Copyright (c) IPython Development Team.
# Distributed under the terms of the Modified BSD License.
import ast
import os
import signal
import shutil
import sys
import tempfile
import unittest
from unittest import mock
from os.path import join
import nose.tools as nt
from IPython.core.error import InputRejected
from IPython.core.inputtransformer import InputTransformer
from IPython.testing.decorators import (
skipif, skip_win32, onlyif_unicode_paths, onlyif_cmds_exist,
)
from IPython.testing import tools as tt
from IPython.utils.process import find_cmd
#-----------------------------------------------------------------------------
# Globals
#-----------------------------------------------------------------------------
# This is used by every single test, no point repeating it ad nauseam
ip = get_ipython()
#-----------------------------------------------------------------------------
# Tests
#-----------------------------------------------------------------------------
class DerivedInterrupt(KeyboardInterrupt):
pass
class InteractiveShellTestCase(unittest.TestCase):
def test_naked_string_cells(self):
"""Test that cells with only naked strings are fully executed"""
# First, single-line inputs
ip.run_cell('"a"\n')
self.assertEqual(ip.user_ns['_'], 'a')
# And also multi-line cells
ip.run_cell('"""a\nb"""\n')
self.assertEqual(ip.user_ns['_'], 'a\nb')
def test_run_empty_cell(self):
"""Just make sure we don't get a horrible error with a blank
cell of input. Yes, I did overlook that."""
old_xc = ip.execution_count
res = ip.run_cell('')
self.assertEqual(ip.execution_count, old_xc)
self.assertEqual(res.execution_count, None)
def test_run_cell_multiline(self):
"""Multi-block, multi-line cells must execute correctly.
"""
src = '\n'.join(["x=1",
"y=2",
"if 1:",
" x += 1",
" y += 1",])
res = ip.run_cell(src)
self.assertEqual(ip.user_ns['x'], 2)
self.assertEqual(ip.user_ns['y'], 3)
self.assertEqual(res.success, True)
self.assertEqual(res.result, None)
def test_multiline_string_cells(self):
"Code sprinkled with multiline strings should execute (GH-306)"
ip.run_cell('tmp=0')
self.assertEqual(ip.user_ns['tmp'], 0)
res = ip.run_cell('tmp=1;"""a\nb"""\n')
self.assertEqual(ip.user_ns['tmp'], 1)
self.assertEqual(res.success, True)
self.assertEqual(res.result, "a\nb")
def test_dont_cache_with_semicolon(self):
"Ending a line with semicolon should not cache the returned object (GH-307)"
oldlen = len(ip.user_ns['Out'])
for cell in ['1;', '1;1;']:
res = ip.run_cell(cell, store_history=True)
newlen = len(ip.user_ns['Out'])
self.assertEqual(oldlen, newlen)
self.assertIsNone(res.result)
i = 0
#also test the default caching behavior
for cell in ['1', '1;1']:
ip.run_cell(cell, store_history=True)
newlen = len(ip.user_ns['Out'])
i += 1
self.assertEqual(oldlen+i, newlen)
def test_syntax_error(self):
res = ip.run_cell("raise = 3")
self.assertIsInstance(res.error_before_exec, SyntaxError)
def test_In_variable(self):
"Verify that In variable grows with user input (GH-284)"
oldlen = len(ip.user_ns['In'])
ip.run_cell('1;', store_history=True)
newlen = len(ip.user_ns['In'])
self.assertEqual(oldlen+1, newlen)
self.assertEqual(ip.user_ns['In'][-1],'1;')
def test_magic_names_in_string(self):
ip.run_cell('a = """\n%exit\n"""')
self.assertEqual(ip.user_ns['a'], '\n%exit\n')
def test_trailing_newline(self):
"""test that running !(command) does not raise a SyntaxError"""
ip.run_cell('!(true)\n', False)
ip.run_cell('!(true)\n\n\n', False)
def test_gh_597(self):
"""Pretty-printing lists of objects with non-ascii reprs may cause
problems."""
class Spam(object):
def __repr__(self):
return "\xe9"*50
import IPython.core.formatters
f = IPython.core.formatters.PlainTextFormatter()
f([Spam(),Spam()])
def test_future_flags(self):
"""Check that future flags are used for parsing code (gh-777)"""
ip.run_cell('from __future__ import barry_as_FLUFL')
try:
ip.run_cell('prfunc_return_val = 1 <> 2')
assert 'prfunc_return_val' in ip.user_ns
finally:
# Reset compiler flags so we don't mess up other tests.
ip.compile.reset_compiler_flags()
def test_can_pickle(self):
"Can we pickle objects defined interactively (GH-29)"
ip = get_ipython()
ip.reset()
ip.run_cell(("class Mylist(list):\n"
" def __init__(self,x=[]):\n"
" list.__init__(self,x)"))
ip.run_cell("w=Mylist([1,2,3])")
from pickle import dumps
# We need to swap in our main module - this is only necessary
# inside the test framework, because IPython puts the interactive module
# in place (but the test framework undoes this).
_main = sys.modules['__main__']
sys.modules['__main__'] = ip.user_module
try:
res = dumps(ip.user_ns["w"])
finally:
sys.modules['__main__'] = _main
self.assertTrue(isinstance(res, bytes))
def test_global_ns(self):
"Code in functions must be able to access variables outside them."
ip = get_ipython()
ip.run_cell("a = 10")
ip.run_cell(("def f(x):\n"
" return x + a"))
ip.run_cell("b = f(12)")
self.assertEqual(ip.user_ns["b"], 22)
def test_bad_custom_tb(self):
"""Check that InteractiveShell is protected from bad custom exception handlers"""
ip.set_custom_exc((IOError,), lambda etype,value,tb: 1/0)
self.assertEqual(ip.custom_exceptions, (IOError,))
with tt.AssertPrints("Custom TB Handler failed", channel='stderr'):
ip.run_cell(u'raise IOError("foo")')
self.assertEqual(ip.custom_exceptions, ())
def test_bad_custom_tb_return(self):
"""Check that InteractiveShell is protected from bad return types in custom exception handlers"""
ip.set_custom_exc((NameError,),lambda etype,value,tb, tb_offset=None: 1)
self.assertEqual(ip.custom_exceptions, (NameError,))
with tt.AssertPrints("Custom TB Handler failed", channel='stderr'):
ip.run_cell(u'a=abracadabra')
self.assertEqual(ip.custom_exceptions, ())
def test_drop_by_id(self):
myvars = {"a":object(), "b":object(), "c": object()}
ip.push(myvars, interactive=False)
for name in myvars:
assert name in ip.user_ns, name
assert name in ip.user_ns_hidden, name
ip.user_ns['b'] = 12
ip.drop_by_id(myvars)
for name in ["a", "c"]:
assert name not in ip.user_ns, name
assert name not in ip.user_ns_hidden, name
assert ip.user_ns['b'] == 12
ip.reset()
def test_var_expand(self):
ip.user_ns['f'] = u'Ca\xf1o'
self.assertEqual(ip.var_expand(u'echo $f'), u'echo Ca\xf1o')
self.assertEqual(ip.var_expand(u'echo {f}'), u'echo Ca\xf1o')
self.assertEqual(ip.var_expand(u'echo {f[:-1]}'), u'echo Ca\xf1')
self.assertEqual(ip.var_expand(u'echo {1*2}'), u'echo 2')
self.assertEqual(ip.var_expand(u"grep x | awk '{print $1}'"), u"grep x | awk '{print $1}'")
ip.user_ns['f'] = b'Ca\xc3\xb1o'
# This should not raise any exception:
ip.var_expand(u'echo $f')
def test_var_expand_local(self):
"""Test local variable expansion in !system and %magic calls"""
# !system
ip.run_cell('def test():\n'
' lvar = "ttt"\n'
' ret = !echo {lvar}\n'
' return ret[0]\n')
res = ip.user_ns['test']()
nt.assert_in('ttt', res)
# %magic
ip.run_cell('def makemacro():\n'
' macroname = "macro_var_expand_locals"\n'
' %macro {macroname} codestr\n')
ip.user_ns['codestr'] = "str(12)"
ip.run_cell('makemacro()')
nt.assert_in('macro_var_expand_locals', ip.user_ns)
def test_var_expand_self(self):
"""Test variable expansion with the name 'self', which was failing.
See https://github.com/ipython/ipython/issues/1878#issuecomment-7698218
"""
ip.run_cell('class cTest:\n'
' classvar="see me"\n'
' def test(self):\n'
' res = !echo Variable: {self.classvar}\n'
' return res[0]\n')
nt.assert_in('see me', ip.user_ns['cTest']().test())
def test_bad_var_expand(self):
"""var_expand on invalid formats shouldn't raise"""
# SyntaxError
self.assertEqual(ip.var_expand(u"{'a':5}"), u"{'a':5}")
# NameError
self.assertEqual(ip.var_expand(u"{asdf}"), u"{asdf}")
# ZeroDivisionError
self.assertEqual(ip.var_expand(u"{1/0}"), u"{1/0}")
def test_silent_postexec(self):
"""run_cell(silent=True) doesn't invoke pre/post_run_cell callbacks"""
pre_explicit = mock.Mock()
pre_always = mock.Mock()
post_explicit = mock.Mock()
post_always = mock.Mock()
all_mocks = [pre_explicit, pre_always, post_explicit, post_always]
ip.events.register('pre_run_cell', pre_explicit)
ip.events.register('pre_execute', pre_always)
ip.events.register('post_run_cell', post_explicit)
ip.events.register('post_execute', post_always)
try:
ip.run_cell("1", silent=True)
assert pre_always.called
assert not pre_explicit.called
assert post_always.called
assert not post_explicit.called
# double-check that non-silent exec did what we expected
# silent to avoid
ip.run_cell("1")
assert pre_explicit.called
assert post_explicit.called
info, = pre_explicit.call_args[0]
result, = post_explicit.call_args[0]
self.assertEqual(info, result.info)
# check that post hooks are always called
[m.reset_mock() for m in all_mocks]
ip.run_cell("syntax error")
assert pre_always.called
assert pre_explicit.called
assert post_always.called
assert post_explicit.called
info, = pre_explicit.call_args[0]
result, = post_explicit.call_args[0]
self.assertEqual(info, result.info)
finally:
# remove post-exec
ip.events.unregister('pre_run_cell', pre_explicit)
ip.events.unregister('pre_execute', pre_always)
ip.events.unregister('post_run_cell', post_explicit)
ip.events.unregister('post_execute', post_always)
def test_silent_noadvance(self):
"""run_cell(silent=True) doesn't advance execution_count"""
ec = ip.execution_count
# silent should force store_history=False
ip.run_cell("1", store_history=True, silent=True)
self.assertEqual(ec, ip.execution_count)
# double-check that non-silent exec did what we expected
# silent to avoid
ip.run_cell("1", store_history=True)
self.assertEqual(ec+1, ip.execution_count)
def test_silent_nodisplayhook(self):
"""run_cell(silent=True) doesn't trigger displayhook"""
d = dict(called=False)
trap = ip.display_trap
save_hook = trap.hook
def failing_hook(*args, **kwargs):
d['called'] = True
try:
trap.hook = failing_hook
res = ip.run_cell("1", silent=True)
self.assertFalse(d['called'])
self.assertIsNone(res.result)
# double-check that non-silent exec did what we expected
# silent to avoid
ip.run_cell("1")
self.assertTrue(d['called'])
finally:
trap.hook = save_hook
def test_ofind_line_magic(self):
from IPython.core.magic import register_line_magic
@register_line_magic
def lmagic(line):
"A line magic"
# Get info on line magic
lfind = ip._ofind('lmagic')
info = dict(found=True, isalias=False, ismagic=True,
namespace = 'IPython internal', obj= lmagic.__wrapped__,
parent = None)
nt.assert_equal(lfind, info)
def test_ofind_cell_magic(self):
from IPython.core.magic import register_cell_magic
@register_cell_magic
def cmagic(line, cell):
"A cell magic"
# Get info on cell magic
find = ip._ofind('cmagic')
info = dict(found=True, isalias=False, ismagic=True,
namespace = 'IPython internal', obj= cmagic.__wrapped__,
parent = None)
nt.assert_equal(find, info)
def test_ofind_property_with_error(self):
class A(object):
@property
def foo(self):
raise NotImplementedError()
a = A()
found = ip._ofind('a.foo', [('locals', locals())])
info = dict(found=True, isalias=False, ismagic=False,
namespace='locals', obj=A.foo, parent=a)
nt.assert_equal(found, info)
def test_ofind_multiple_attribute_lookups(self):
class A(object):
@property
def foo(self):
raise NotImplementedError()
a = A()
a.a = A()
a.a.a = A()
found = ip._ofind('a.a.a.foo', [('locals', locals())])
info = dict(found=True, isalias=False, ismagic=False,
namespace='locals', obj=A.foo, parent=a.a.a)
nt.assert_equal(found, info)
def test_ofind_slotted_attributes(self):
class A(object):
__slots__ = ['foo']
def __init__(self):
self.foo = 'bar'
a = A()
found = ip._ofind('a.foo', [('locals', locals())])
info = dict(found=True, isalias=False, ismagic=False,
namespace='locals', obj=a.foo, parent=a)
nt.assert_equal(found, info)
found = ip._ofind('a.bar', [('locals', locals())])
info = dict(found=False, isalias=False, ismagic=False,
namespace=None, obj=None, parent=a)
nt.assert_equal(found, info)
def test_ofind_prefers_property_to_instance_level_attribute(self):
class A(object):
@property
def foo(self):
return 'bar'
a = A()
a.__dict__['foo'] = 'baz'
nt.assert_equal(a.foo, 'bar')
found = ip._ofind('a.foo', [('locals', locals())])
nt.assert_is(found['obj'], A.foo)
def test_custom_syntaxerror_exception(self):
called = []
def my_handler(shell, etype, value, tb, tb_offset=None):
called.append(etype)
shell.showtraceback((etype, value, tb), tb_offset=tb_offset)
ip.set_custom_exc((SyntaxError,), my_handler)
try:
ip.run_cell("1f")
# Check that this was called, and only once.
self.assertEqual(called, [SyntaxError])
finally:
# Reset the custom exception hook
ip.set_custom_exc((), None)
def test_custom_exception(self):
called = []
def my_handler(shell, etype, value, tb, tb_offset=None):
called.append(etype)
shell.showtraceback((etype, value, tb), tb_offset=tb_offset)
ip.set_custom_exc((ValueError,), my_handler)
try:
res = ip.run_cell("raise ValueError('test')")
# Check that this was called, and only once.
self.assertEqual(called, [ValueError])
# Check that the error is on the result object
self.assertIsInstance(res.error_in_exec, ValueError)
finally:
# Reset the custom exception hook
ip.set_custom_exc((), None)
def test_mktempfile(self):
filename = ip.mktempfile()
# Check that we can open the file again on Windows
with open(filename, 'w') as f:
f.write('abc')
filename = ip.mktempfile(data='blah')
with open(filename, 'r') as f:
self.assertEqual(f.read(), 'blah')
def test_new_main_mod(self):
# Smoketest to check that this accepts a unicode module name
name = u'jiefmw'
mod = ip.new_main_mod(u'%s.py' % name, name)
self.assertEqual(mod.__name__, name)
def test_get_exception_only(self):
try:
raise KeyboardInterrupt
except KeyboardInterrupt:
msg = ip.get_exception_only()
self.assertEqual(msg, 'KeyboardInterrupt\n')
try:
raise DerivedInterrupt("foo")
except KeyboardInterrupt:
msg = ip.get_exception_only()
self.assertEqual(msg, 'IPython.core.tests.test_interactiveshell.DerivedInterrupt: foo\n')
def test_inspect_text(self):
ip.run_cell('a = 5')
text = ip.object_inspect_text('a')
self.assertIsInstance(text, str)
def test_last_execution_result(self):
""" Check that last execution result gets set correctly (GH-10702) """
result = ip.run_cell('a = 5; a')
self.assertTrue(ip.last_execution_succeeded)
self.assertEqual(ip.last_execution_result.result, 5)
result = ip.run_cell('a = x_invalid_id_x')
self.assertFalse(ip.last_execution_succeeded)
self.assertFalse(ip.last_execution_result.success)
self.assertIsInstance(ip.last_execution_result.error_in_exec, NameError)
class TestSafeExecfileNonAsciiPath(unittest.TestCase):
@onlyif_unicode_paths
def setUp(self):
self.BASETESTDIR = tempfile.mkdtemp()
self.TESTDIR = join(self.BASETESTDIR, u"åäö")
os.mkdir(self.TESTDIR)
with open(join(self.TESTDIR, u"åäötestscript.py"), "w") as sfile:
sfile.write("pass\n")
self.oldpath = os.getcwd()
os.chdir(self.TESTDIR)
self.fname = u"åäötestscript.py"
def tearDown(self):
os.chdir(self.oldpath)
shutil.rmtree(self.BASETESTDIR)
@onlyif_unicode_paths
def test_1(self):
"""Test safe_execfile with non-ascii path
"""
ip.safe_execfile(self.fname, {}, raise_exceptions=True)
class ExitCodeChecks(tt.TempFileMixin):
def test_exit_code_ok(self):
self.system('exit 0')
self.assertEqual(ip.user_ns['_exit_code'], 0)
def test_exit_code_error(self):
self.system('exit 1')
self.assertEqual(ip.user_ns['_exit_code'], 1)
@skipif(not hasattr(signal, 'SIGALRM'))
def test_exit_code_signal(self):
self.mktmp("import signal, time\n"
"signal.setitimer(signal.ITIMER_REAL, 0.1)\n"
"time.sleep(1)\n")
self.system("%s %s" % (sys.executable, self.fname))
self.assertEqual(ip.user_ns['_exit_code'], -signal.SIGALRM)
@onlyif_cmds_exist("csh")
def test_exit_code_signal_csh(self):
SHELL = os.environ.get('SHELL', None)
os.environ['SHELL'] = find_cmd("csh")
try:
self.test_exit_code_signal()
finally:
if SHELL is not None:
os.environ['SHELL'] = SHELL
else:
del os.environ['SHELL']
class TestSystemRaw(unittest.TestCase, ExitCodeChecks):
system = ip.system_raw
@onlyif_unicode_paths
def test_1(self):
"""Test system_raw with non-ascii cmd
"""
cmd = u'''python -c "'åäö'" '''
ip.system_raw(cmd)
@mock.patch('subprocess.call', side_effect=KeyboardInterrupt)
@mock.patch('os.system', side_effect=KeyboardInterrupt)
def test_control_c(self, *mocks):
try:
self.system("sleep 1 # wont happen")
except KeyboardInterrupt:
self.fail("system call should intercept "
"keyboard interrupt from subprocess.call")
self.assertEqual(ip.user_ns['_exit_code'], -signal.SIGINT)
# TODO: Exit codes are currently ignored on Windows.
class TestSystemPipedExitCode(unittest.TestCase, ExitCodeChecks):
system = ip.system_piped
@skip_win32
def test_exit_code_ok(self):
ExitCodeChecks.test_exit_code_ok(self)
@skip_win32
def test_exit_code_error(self):
ExitCodeChecks.test_exit_code_error(self)
@skip_win32
def test_exit_code_signal(self):
ExitCodeChecks.test_exit_code_signal(self)
class TestModules(unittest.TestCase, tt.TempFileMixin):
def test_extraneous_loads(self):
"""Test we're not loading modules on startup that we shouldn't.
"""
self.mktmp("import sys\n"
"print('numpy' in sys.modules)\n"
"print('ipyparallel' in sys.modules)\n"
"print('ipykernel' in sys.modules)\n"
)
out = "False\nFalse\nFalse\n"
tt.ipexec_validate(self.fname, out)
class Negator(ast.NodeTransformer):
"""Negates all number literals in an AST."""
def visit_Num(self, node):
node.n = -node.n
return node
class TestAstTransform(unittest.TestCase):
def setUp(self):
self.negator = Negator()
ip.ast_transformers.append(self.negator)
def tearDown(self):
ip.ast_transformers.remove(self.negator)
def test_run_cell(self):
with tt.AssertPrints('-34'):
ip.run_cell('print (12 + 22)')
# A named reference to a number shouldn't be transformed.
ip.user_ns['n'] = 55
with tt.AssertNotPrints('-55'):
ip.run_cell('print (n)')
def test_timeit(self):
called = set()
def f(x):
called.add(x)
ip.push({'f':f})
with tt.AssertPrints("std. dev. of"):
ip.run_line_magic("timeit", "-n1 f(1)")
self.assertEqual(called, {-1})
called.clear()
with tt.AssertPrints("std. dev. of"):
ip.run_cell_magic("timeit", "-n1 f(2)", "f(3)")
self.assertEqual(called, {-2, -3})
def test_time(self):
called = []
def f(x):
called.append(x)
ip.push({'f':f})
# Test with an expression
with tt.AssertPrints("Wall time: "):
ip.run_line_magic("time", "f(5+9)")
self.assertEqual(called, [-14])
called[:] = []
# Test with a statement (different code path)
with tt.AssertPrints("Wall time: "):
ip.run_line_magic("time", "a = f(-3 + -2)")
self.assertEqual(called, [5])
def test_macro(self):
ip.push({'a':10})
# The AST transformation makes this do a+=-1
ip.define_macro("amacro", "a+=1\nprint(a)")
with tt.AssertPrints("9"):
ip.run_cell("amacro")
with tt.AssertPrints("8"):
ip.run_cell("amacro")
class IntegerWrapper(ast.NodeTransformer):
"""Wraps all integers in a call to Integer()"""
def visit_Num(self, node):
if isinstance(node.n, int):
return ast.Call(func=ast.Name(id='Integer', ctx=ast.Load()),
args=[node], keywords=[])
return node
class TestAstTransform2(unittest.TestCase):
def setUp(self):
self.intwrapper = IntegerWrapper()
ip.ast_transformers.append(self.intwrapper)
self.calls = []
def Integer(*args):
self.calls.append(args)
return args
ip.push({"Integer": Integer})
def tearDown(self):
ip.ast_transformers.remove(self.intwrapper)
del ip.user_ns['Integer']
def test_run_cell(self):
ip.run_cell("n = 2")
self.assertEqual(self.calls, [(2,)])
# This shouldn't throw an error
ip.run_cell("o = 2.0")
self.assertEqual(ip.user_ns['o'], 2.0)
def test_timeit(self):
called = set()
def f(x):
called.add(x)
ip.push({'f':f})
with tt.AssertPrints("std. dev. of"):
ip.run_line_magic("timeit", "-n1 f(1)")
self.assertEqual(called, {(1,)})
called.clear()
with tt.AssertPrints("std. dev. of"):
ip.run_cell_magic("timeit", "-n1 f(2)", "f(3)")
self.assertEqual(called, {(2,), (3,)})
class ErrorTransformer(ast.NodeTransformer):
"""Throws an error when it sees a number."""
def visit_Num(self, node):
raise ValueError("test")
class TestAstTransformError(unittest.TestCase):
def test_unregistering(self):
err_transformer = ErrorTransformer()
ip.ast_transformers.append(err_transformer)
with tt.AssertPrints("unregister", channel='stderr'):
ip.run_cell("1 + 2")
# This should have been removed.
nt.assert_not_in(err_transformer, ip.ast_transformers)
class StringRejector(ast.NodeTransformer):
"""Throws an InputRejected when it sees a string literal.
Used to verify that NodeTransformers can signal that a piece of code should
not be executed by throwing an InputRejected.
"""
def visit_Str(self, node):
raise InputRejected("test")
class TestAstTransformInputRejection(unittest.TestCase):
def setUp(self):
self.transformer = StringRejector()
ip.ast_transformers.append(self.transformer)
def tearDown(self):
ip.ast_transformers.remove(self.transformer)
def test_input_rejection(self):
"""Check that NodeTransformers can reject input."""
expect_exception_tb = tt.AssertPrints("InputRejected: test")
expect_no_cell_output = tt.AssertNotPrints("'unsafe'", suppress=False)
# Run the same check twice to verify that the transformer is not
# disabled after raising.
with expect_exception_tb, expect_no_cell_output:
ip.run_cell("'unsafe'")
with expect_exception_tb, expect_no_cell_output:
res = ip.run_cell("'unsafe'")
self.assertIsInstance(res.error_before_exec, InputRejected)
def test__IPYTHON__():
# This shouldn't raise a NameError, that's all
__IPYTHON__
class DummyRepr(object):
def __repr__(self):
return "DummyRepr"
def _repr_html_(self):
return "<b>dummy</b>"
def _repr_javascript_(self):
return "console.log('hi');", {'key': 'value'}
def test_user_variables():
# enable all formatters
ip.display_formatter.active_types = ip.display_formatter.format_types
ip.user_ns['dummy'] = d = DummyRepr()
keys = {'dummy', 'doesnotexist'}
r = ip.user_expressions({ key:key for key in keys})
nt.assert_equal(keys, set(r.keys()))
dummy = r['dummy']
nt.assert_equal({'status', 'data', 'metadata'}, set(dummy.keys()))
nt.assert_equal(dummy['status'], 'ok')
data = dummy['data']
metadata = dummy['metadata']
nt.assert_equal(data.get('text/html'), d._repr_html_())
js, jsmd = d._repr_javascript_()
nt.assert_equal(data.get('application/javascript'), js)
nt.assert_equal(metadata.get('application/javascript'), jsmd)
dne = r['doesnotexist']
nt.assert_equal(dne['status'], 'error')
nt.assert_equal(dne['ename'], 'NameError')
# back to text only
ip.display_formatter.active_types = ['text/plain']
def test_user_expression():
# enable all formatters
ip.display_formatter.active_types = ip.display_formatter.format_types
query = {
'a' : '1 + 2',
'b' : '1/0',
}
r = ip.user_expressions(query)
import pprint
pprint.pprint(r)
nt.assert_equal(set(r.keys()), set(query.keys()))
a = r['a']
nt.assert_equal({'status', 'data', 'metadata'}, set(a.keys()))
nt.assert_equal(a['status'], 'ok')
data = a['data']
metadata = a['metadata']
nt.assert_equal(data.get('text/plain'), '3')
b = r['b']
nt.assert_equal(b['status'], 'error')
nt.assert_equal(b['ename'], 'ZeroDivisionError')
# back to text only
ip.display_formatter.active_types = ['text/plain']
class TestSyntaxErrorTransformer(unittest.TestCase):
"""Check that SyntaxError raised by an input transformer is handled by run_cell()"""
class SyntaxErrorTransformer(InputTransformer):
def push(self, line):
pos = line.find('syntaxerror')
if pos >= 0:
e = SyntaxError('input contains "syntaxerror"')
e.text = line
e.offset = pos + 1
raise e
return line
def reset(self):
pass
def setUp(self):
self.transformer = TestSyntaxErrorTransformer.SyntaxErrorTransformer()
ip.input_splitter.python_line_transforms.append(self.transformer)
ip.input_transformer_manager.python_line_transforms.append(self.transformer)
def tearDown(self):
ip.input_splitter.python_line_transforms.remove(self.transformer)
ip.input_transformer_manager.python_line_transforms.remove(self.transformer)
def test_syntaxerror_input_transformer(self):
with tt.AssertPrints('1234'):
ip.run_cell('1234')
with tt.AssertPrints('SyntaxError: invalid syntax'):
ip.run_cell('1 2 3') # plain python syntax error
with tt.AssertPrints('SyntaxError: input contains "syntaxerror"'):
ip.run_cell('2345 # syntaxerror') # input transformer syntax error
with tt.AssertPrints('3456'):
ip.run_cell('3456')
def test_warning_suppression():
ip.run_cell("import warnings")
try:
with tt.AssertPrints("UserWarning: asdf", channel="stderr"):
ip.run_cell("warnings.warn('asdf')")
# Here's the real test -- if we run that again, we should get the
# warning again. Traditionally, each warning was only issued once per
# IPython session (approximately), even if the user typed in new and
# different code that should have also triggered the warning, leading
# to much confusion.
with tt.AssertPrints("UserWarning: asdf", channel="stderr"):
ip.run_cell("warnings.warn('asdf')")
finally:
ip.run_cell("del warnings")
def test_deprecation_warning():
ip.run_cell("""
import warnings
def wrn():
warnings.warn(
"I AM A WARNING",
DeprecationWarning
)
""")
try:
with tt.AssertPrints("I AM A WARNING", channel="stderr"):
ip.run_cell("wrn()")
finally:
ip.run_cell("del warnings")
ip.run_cell("del wrn")
class TestImportNoDeprecate(tt.TempFileMixin):
def setup(self):
"""Make a valid python temp file."""
self.mktmp("""
import warnings
def wrn():
warnings.warn(
"I AM A WARNING",
DeprecationWarning
)
""")
def test_no_dep(self):
"""
No deprecation warning should be raised from imported functions
"""
ip.run_cell("from {} import wrn".format(self.fname))
with tt.AssertNotPrints("I AM A WARNING"):
ip.run_cell("wrn()")
ip.run_cell("del wrn")