/usr/lib/python3/dist-packages/plainbox/testing_utils/test_io.py is in python3-plainbox 0.25-1.
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#
# Copyright 2012 Canonical Ltd.
# Written by:
# Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
#
# Checkbox is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3,
# as published by the Free Software Foundation.
#
# Checkbox is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Checkbox. If not, see <http://www.gnu.org/licenses/>.
"""
plainbox.testing_utils.test_io
==============================
Test definitions for plainbox.testing_utils.io module
"""
import sys
from unittest import TestCase
from plainbox.testing_utils.io import TestIO
class TestIOTest(TestCase):
def test_stdin(self):
with TestIO():
self.assertRaises(EOFError, input)
def test_stdin_text(self):
with TestIO(input="text 1\ntext 2\n"):
value1 = input()
value2 = input()
self.assertEqual(value1, "text 1")
self.assertEqual(value2, "text 2")
def test_stdout(self):
with TestIO() as io:
print("Hello World")
self.assertEqual(io.stdout, "Hello World\n")
self.assertEqual(io.stderr, "")
def test_stderr(self):
with TestIO() as io:
print("Hello World", file=sys.stderr)
self.assertEqual(io.stdout, "")
self.assertEqual(io.stderr, "Hello World\n")
def test_both(self):
with TestIO() as io:
print("Hello output", file=sys.stdout)
print("Hello error", file=sys.stderr)
self.assertEqual(io.stdout, "Hello output\n")
self.assertEqual(io.stderr, "Hello error\n")
def test_both_combined(self):
with TestIO(combined=True) as io:
print("Hello output", file=sys.stdout)
print("Hello error", file=sys.stderr)
self.assertEqual(io.combined, "Hello output\nHello error\n")
def test_argparse_is_supported(self):
with TestIO() as io:
import argparse
self.assertIs(argparse._sys, sys)
self.assertIs(argparse._sys.stdout, io._fake_stdout)
self.assertIs(argparse._sys.stderr, io._fake_stderr)
parser = argparse.ArgumentParser(prog="foo")
parser.print_usage()
self.assertEqual(io.stdout, "usage: foo [-h]\n")
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