cpython/Lib/test/test_tools.py

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"""Tests for scripts in the Tools directory.
This file contains regression tests for some of the scripts found in the
Tools directory of a Python checkout or tarball, such as reindent.py.
"""
import os
import sys
import importlib.machinery
import unittest
from unittest import mock
import sysconfig
import tempfile
from test import support
from test.script_helper import assert_python_ok
if not sysconfig.is_python_build():
# XXX some installers do contain the tools, should we detect that
# and run the tests in that case too?
raise unittest.SkipTest('test irrelevant for an installed Python')
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basepath = os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(__file__))),
'Tools')
scriptsdir = os.path.join(basepath, 'scripts')
class ReindentTests(unittest.TestCase):
script = os.path.join(scriptsdir, 'reindent.py')
def test_noargs(self):
assert_python_ok(self.script)
def test_help(self):
rc, out, err = assert_python_ok(self.script, '-h')
self.assertEqual(out, b'')
self.assertGreater(err, b'')
class TestSundryScripts(unittest.TestCase):
# At least make sure the rest don't have syntax errors. When tests are
# added for a script it should be added to the whitelist below.
# scripts that have independent tests.
whitelist = ['reindent.py', 'pdeps.py', 'gprof2html']
# scripts that can't be imported without running
blacklist = ['make_ctype.py']
# scripts that use windows-only modules
windows_only = ['win_add2path.py']
# blacklisted for other reasons
other = ['analyze_dxp.py']
skiplist = blacklist + whitelist + windows_only + other
def setUp(self):
cm = support.DirsOnSysPath(scriptsdir)
cm.__enter__()
self.addCleanup(cm.__exit__)
def test_sundry(self):
for fn in os.listdir(scriptsdir):
if fn.endswith('.py') and fn not in self.skiplist:
__import__(fn[:-3])
@unittest.skipIf(sys.platform != "win32", "Windows-only test")
def test_sundry_windows(self):
for fn in self.windows_only:
__import__(fn[:-3])
@unittest.skipIf(not support.threading, "test requires _thread module")
def test_analyze_dxp_import(self):
if hasattr(sys, 'getdxp'):
import analyze_dxp
else:
with self.assertRaises(RuntimeError):
import analyze_dxp
class PdepsTests(unittest.TestCase):
@classmethod
def setUpClass(self):
path = os.path.join(scriptsdir, 'pdeps.py')
loader = importlib.machinery.SourceFileLoader('pdeps', path)
self.pdeps = loader.load_module()
@classmethod
def tearDownClass(self):
if 'pdeps' in sys.modules:
del sys.modules['pdeps']
def test_process_errors(self):
# Issue #14492: m_import.match(line) can be None.
with tempfile.TemporaryDirectory() as tmpdir:
fn = os.path.join(tmpdir, 'foo')
with open(fn, 'w') as stream:
stream.write("#!/this/will/fail")
self.pdeps.process(fn, {})
def test_inverse_attribute_error(self):
# Issue #14492: this used to fail with an AttributeError.
self.pdeps.inverse({'a': []})
class Gprof2htmlTests(unittest.TestCase):
def setUp(self):
path = os.path.join(scriptsdir, 'gprof2html.py')
loader = importlib.machinery.SourceFileLoader('gprof2html', path)
self.gprof = loader.load_module()
oldargv = sys.argv
def fixup():
sys.argv = oldargv
self.addCleanup(fixup)
sys.argv = []
def test_gprof(self):
# Issue #14508: this used to fail with an NameError.
with mock.patch.object(self.gprof, 'webbrowser') as wmock, \
tempfile.TemporaryDirectory() as tmpdir:
fn = os.path.join(tmpdir, 'abc')
open(fn, 'w').close()
sys.argv = ['gprof2html', fn]
self.gprof.main()
self.assertTrue(wmock.open.called)
# Run the tests in Tools/parser/test_unparse.py
with support.DirsOnSysPath(os.path.join(basepath, 'parser')):
from test_unparse import UnparseTestCase
from test_unparse import DirectoryTestCase
def test_main():
support.run_unittest(*[obj for obj in globals().values()
if isinstance(obj, type)])
if __name__ == '__main__':
unittest.main()