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Merge pull request #2389 from takluyver/catch-histdb-errors...
Merge pull request #2389 from takluyver/catch-histdb-errors Catch sqlite DatabaseErrors in more places when reading the history database It seems sqlite can encounter corruption and throw an error when reading the database, although it has connected successfully. This borrows the move-and-recreate machinery we already had on connecting to the database. If such an error occurs, the corrupted file is moved and the user get warned of the name of the corrupted file.

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test_ultratb.py
95 lines | 2.9 KiB | text/x-python | PythonLexer
# encoding: utf-8
"""Tests for IPython.core.ultratb
"""
import io
import os.path
import unittest
from IPython.testing import tools as tt
from IPython.utils.syspathcontext import prepended_to_syspath
from IPython.utils.tempdir import TemporaryDirectory
ip = get_ipython()
file_1 = """1
2
3
def f():
1/0
"""
file_2 = """def f():
1/0
"""
class ChangedPyFileTest(unittest.TestCase):
def test_changing_py_file(self):
"""Traceback produced if the line where the error occurred is missing?
https://github.com/ipython/ipython/issues/1456
"""
with TemporaryDirectory() as td:
fname = os.path.join(td, "foo.py")
with open(fname, "w") as f:
f.write(file_1)
with prepended_to_syspath(td):
ip.run_cell("import foo")
with tt.AssertPrints("ZeroDivisionError"):
ip.run_cell("foo.f()")
# Make the file shorter, so the line of the error is missing.
with open(fname, "w") as f:
f.write(file_2)
# For some reason, this was failing on the *second* call after
# changing the file, so we call f() twice.
with tt.AssertNotPrints("Internal Python error", channel='stderr'):
with tt.AssertPrints("ZeroDivisionError"):
ip.run_cell("foo.f()")
with tt.AssertPrints("ZeroDivisionError"):
ip.run_cell("foo.f()")
iso_8859_5_file = u'''# coding: iso-8859-5
def fail():
"""дбИЖ"""
1/0 # дбИЖ
'''
class NonAsciiTest(unittest.TestCase):
def test_iso8859_5(self):
# Non-ascii directory name as well.
with TemporaryDirectory(suffix=u'é') as td:
fname = os.path.join(td, 'dfghjkl.py')
with io.open(fname, 'w', encoding='iso-8859-5') as f:
f.write(iso_8859_5_file)
with prepended_to_syspath(td):
ip.run_cell("from dfghjkl import fail")
with tt.AssertPrints("ZeroDivisionError"):
with tt.AssertPrints(u'дбИЖ', suppress=False):
ip.run_cell('fail()')
indentationerror_file = """if True:
zoon()
"""
class IndentationErrorTest(unittest.TestCase):
def test_indentationerror_shows_line(self):
# See issue gh-2398
with tt.AssertPrints("IndentationError"):
with tt.AssertPrints("zoon()", suppress=False):
ip.run_cell(indentationerror_file)
with TemporaryDirectory() as td:
fname = os.path.join(td, "foo.py")
with open(fname, "w") as f:
f.write(indentationerror_file)
with tt.AssertPrints("IndentationError"):
with tt.AssertPrints("zoon()", suppress=False):
ip.magic('run %s' % fname)