|
|
"""Tests for autoreload extension.
|
|
|
"""
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Copyright (c) 2012 IPython Development Team.
|
|
|
#
|
|
|
# Distributed under the terms of the Modified BSD License.
|
|
|
#
|
|
|
# The full license is in the file COPYING.txt, distributed with this software.
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Imports
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
import os
|
|
|
import sys
|
|
|
import tempfile
|
|
|
import shutil
|
|
|
import random
|
|
|
import time
|
|
|
|
|
|
import nose.tools as nt
|
|
|
import IPython.testing.tools as tt
|
|
|
|
|
|
from IPython.extensions.autoreload import AutoreloadMagics
|
|
|
from IPython.core.hooks import TryNext
|
|
|
from IPython.utils.py3compat import PY3
|
|
|
|
|
|
if PY3:
|
|
|
from io import StringIO
|
|
|
else:
|
|
|
from StringIO import StringIO
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Test fixture
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
noop = lambda *a, **kw: None
|
|
|
|
|
|
class FakeShell(object):
|
|
|
|
|
|
def __init__(self):
|
|
|
self.ns = {}
|
|
|
self.auto_magics = AutoreloadMagics(shell=self)
|
|
|
|
|
|
register_magics = set_hook = noop
|
|
|
|
|
|
def run_code(self, code):
|
|
|
try:
|
|
|
self.auto_magics.pre_run_code_hook(self)
|
|
|
except TryNext:
|
|
|
pass
|
|
|
exec(code, self.ns)
|
|
|
|
|
|
def push(self, items):
|
|
|
self.ns.update(items)
|
|
|
|
|
|
def magic_autoreload(self, parameter):
|
|
|
self.auto_magics.autoreload(parameter)
|
|
|
|
|
|
def magic_aimport(self, parameter, stream=None):
|
|
|
self.auto_magics.aimport(parameter, stream=stream)
|
|
|
|
|
|
|
|
|
class Fixture(object):
|
|
|
"""Fixture for creating test module files"""
|
|
|
|
|
|
test_dir = None
|
|
|
old_sys_path = None
|
|
|
filename_chars = "abcdefghijklmopqrstuvwxyz0123456789"
|
|
|
|
|
|
def setUp(self):
|
|
|
self.test_dir = tempfile.mkdtemp()
|
|
|
self.old_sys_path = list(sys.path)
|
|
|
sys.path.insert(0, self.test_dir)
|
|
|
self.shell = FakeShell()
|
|
|
|
|
|
def tearDown(self):
|
|
|
shutil.rmtree(self.test_dir)
|
|
|
sys.path = self.old_sys_path
|
|
|
|
|
|
self.test_dir = None
|
|
|
self.old_sys_path = None
|
|
|
self.shell = None
|
|
|
|
|
|
def get_module(self):
|
|
|
module_name = "tmpmod_" + "".join(random.sample(self.filename_chars,20))
|
|
|
if module_name in sys.modules:
|
|
|
del sys.modules[module_name]
|
|
|
file_name = os.path.join(self.test_dir, module_name + ".py")
|
|
|
return module_name, file_name
|
|
|
|
|
|
def write_file(self, filename, content):
|
|
|
"""
|
|
|
Write a file, and force a timestamp difference of at least one second
|
|
|
|
|
|
Notes
|
|
|
-----
|
|
|
Python's .pyc files record the timestamp of their compilation
|
|
|
with a time resolution of one second.
|
|
|
|
|
|
Therefore, we need to force a timestamp difference between .py
|
|
|
and .pyc, without having the .py file be timestamped in the
|
|
|
future, and without changing the timestamp of the .pyc file
|
|
|
(because that is stored in the file). The only reliable way
|
|
|
to achieve this seems to be to sleep.
|
|
|
"""
|
|
|
|
|
|
# Sleep one second + eps
|
|
|
time.sleep(1.05)
|
|
|
|
|
|
# Write
|
|
|
f = open(filename, 'w')
|
|
|
try:
|
|
|
f.write(content)
|
|
|
finally:
|
|
|
f.close()
|
|
|
|
|
|
def new_module(self, code):
|
|
|
mod_name, mod_fn = self.get_module()
|
|
|
f = open(mod_fn, 'w')
|
|
|
try:
|
|
|
f.write(code)
|
|
|
finally:
|
|
|
f.close()
|
|
|
return mod_name, mod_fn
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Test automatic reloading
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
class TestAutoreload(Fixture):
|
|
|
def _check_smoketest(self, use_aimport=True):
|
|
|
"""
|
|
|
Functional test for the automatic reloader using either
|
|
|
'%autoreload 1' or '%autoreload 2'
|
|
|
"""
|
|
|
|
|
|
mod_name, mod_fn = self.new_module("""
|
|
|
x = 9
|
|
|
|
|
|
z = 123 # this item will be deleted
|
|
|
|
|
|
def foo(y):
|
|
|
return y + 3
|
|
|
|
|
|
class Baz(object):
|
|
|
def __init__(self, x):
|
|
|
self.x = x
|
|
|
def bar(self, y):
|
|
|
return self.x + y
|
|
|
@property
|
|
|
def quux(self):
|
|
|
return 42
|
|
|
def zzz(self):
|
|
|
'''This method will be deleted below'''
|
|
|
return 99
|
|
|
|
|
|
class Bar: # old-style class: weakref doesn't work for it on Python < 2.7
|
|
|
def foo(self):
|
|
|
return 1
|
|
|
""")
|
|
|
|
|
|
#
|
|
|
# Import module, and mark for reloading
|
|
|
#
|
|
|
if use_aimport:
|
|
|
self.shell.magic_autoreload("1")
|
|
|
self.shell.magic_aimport(mod_name)
|
|
|
stream = StringIO()
|
|
|
self.shell.magic_aimport("", stream=stream)
|
|
|
nt.assert_true(("Modules to reload:\n%s" % mod_name) in
|
|
|
stream.getvalue())
|
|
|
|
|
|
nt.assert_raises(
|
|
|
ImportError,
|
|
|
self.shell.magic_aimport, "tmpmod_as318989e89ds")
|
|
|
else:
|
|
|
self.shell.magic_autoreload("2")
|
|
|
self.shell.run_code("import %s" % mod_name)
|
|
|
stream = StringIO()
|
|
|
self.shell.magic_aimport("", stream=stream)
|
|
|
nt.assert_true("Modules to reload:\nall-except-skipped" in
|
|
|
stream.getvalue())
|
|
|
nt.assert_in(mod_name, self.shell.ns)
|
|
|
|
|
|
mod = sys.modules[mod_name]
|
|
|
|
|
|
#
|
|
|
# Test module contents
|
|
|
#
|
|
|
old_foo = mod.foo
|
|
|
old_obj = mod.Baz(9)
|
|
|
old_obj2 = mod.Bar()
|
|
|
|
|
|
def check_module_contents():
|
|
|
nt.assert_equal(mod.x, 9)
|
|
|
nt.assert_equal(mod.z, 123)
|
|
|
|
|
|
nt.assert_equal(old_foo(0), 3)
|
|
|
nt.assert_equal(mod.foo(0), 3)
|
|
|
|
|
|
obj = mod.Baz(9)
|
|
|
nt.assert_equal(old_obj.bar(1), 10)
|
|
|
nt.assert_equal(obj.bar(1), 10)
|
|
|
nt.assert_equal(obj.quux, 42)
|
|
|
nt.assert_equal(obj.zzz(), 99)
|
|
|
|
|
|
obj2 = mod.Bar()
|
|
|
nt.assert_equal(old_obj2.foo(), 1)
|
|
|
nt.assert_equal(obj2.foo(), 1)
|
|
|
|
|
|
check_module_contents()
|
|
|
|
|
|
#
|
|
|
# Simulate a failed reload: no reload should occur and exactly
|
|
|
# one error message should be printed
|
|
|
#
|
|
|
self.write_file(mod_fn, """
|
|
|
a syntax error
|
|
|
""")
|
|
|
|
|
|
with tt.AssertPrints(('[autoreload of %s failed:' % mod_name), channel='stderr'):
|
|
|
self.shell.run_code("pass") # trigger reload
|
|
|
with tt.AssertNotPrints(('[autoreload of %s failed:' % mod_name), channel='stderr'):
|
|
|
self.shell.run_code("pass") # trigger another reload
|
|
|
check_module_contents()
|
|
|
|
|
|
#
|
|
|
# Rewrite module (this time reload should succeed)
|
|
|
#
|
|
|
self.write_file(mod_fn, """
|
|
|
x = 10
|
|
|
|
|
|
def foo(y):
|
|
|
return y + 4
|
|
|
|
|
|
class Baz(object):
|
|
|
def __init__(self, x):
|
|
|
self.x = x
|
|
|
def bar(self, y):
|
|
|
return self.x + y + 1
|
|
|
@property
|
|
|
def quux(self):
|
|
|
return 43
|
|
|
|
|
|
class Bar: # old-style class
|
|
|
def foo(self):
|
|
|
return 2
|
|
|
""")
|
|
|
|
|
|
def check_module_contents():
|
|
|
nt.assert_equal(mod.x, 10)
|
|
|
nt.assert_false(hasattr(mod, 'z'))
|
|
|
|
|
|
nt.assert_equal(old_foo(0), 4) # superreload magic!
|
|
|
nt.assert_equal(mod.foo(0), 4)
|
|
|
|
|
|
obj = mod.Baz(9)
|
|
|
nt.assert_equal(old_obj.bar(1), 11) # superreload magic!
|
|
|
nt.assert_equal(obj.bar(1), 11)
|
|
|
|
|
|
nt.assert_equal(old_obj.quux, 43)
|
|
|
nt.assert_equal(obj.quux, 43)
|
|
|
|
|
|
nt.assert_false(hasattr(old_obj, 'zzz'))
|
|
|
nt.assert_false(hasattr(obj, 'zzz'))
|
|
|
|
|
|
obj2 = mod.Bar()
|
|
|
nt.assert_equal(old_obj2.foo(), 2)
|
|
|
nt.assert_equal(obj2.foo(), 2)
|
|
|
|
|
|
self.shell.run_code("pass") # trigger reload
|
|
|
check_module_contents()
|
|
|
|
|
|
#
|
|
|
# Another failure case: deleted file (shouldn't reload)
|
|
|
#
|
|
|
os.unlink(mod_fn)
|
|
|
|
|
|
self.shell.run_code("pass") # trigger reload
|
|
|
check_module_contents()
|
|
|
|
|
|
#
|
|
|
# Disable autoreload and rewrite module: no reload should occur
|
|
|
#
|
|
|
if use_aimport:
|
|
|
self.shell.magic_aimport("-" + mod_name)
|
|
|
stream = StringIO()
|
|
|
self.shell.magic_aimport("", stream=stream)
|
|
|
nt.assert_true(("Modules to skip:\n%s" % mod_name) in
|
|
|
stream.getvalue())
|
|
|
|
|
|
# This should succeed, although no such module exists
|
|
|
self.shell.magic_aimport("-tmpmod_as318989e89ds")
|
|
|
else:
|
|
|
self.shell.magic_autoreload("0")
|
|
|
|
|
|
self.write_file(mod_fn, """
|
|
|
x = -99
|
|
|
""")
|
|
|
|
|
|
self.shell.run_code("pass") # trigger reload
|
|
|
self.shell.run_code("pass")
|
|
|
check_module_contents()
|
|
|
|
|
|
#
|
|
|
# Re-enable autoreload: reload should now occur
|
|
|
#
|
|
|
if use_aimport:
|
|
|
self.shell.magic_aimport(mod_name)
|
|
|
else:
|
|
|
self.shell.magic_autoreload("")
|
|
|
|
|
|
self.shell.run_code("pass") # trigger reload
|
|
|
nt.assert_equal(mod.x, -99)
|
|
|
|
|
|
def test_smoketest_aimport(self):
|
|
|
self._check_smoketest(use_aimport=True)
|
|
|
|
|
|
def test_smoketest_autoreload(self):
|
|
|
self._check_smoketest(use_aimport=False)
|
|
|
|
