mirror of
https://github.com/python/cpython.git
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464 lines
12 KiB
Python
464 lines
12 KiB
Python
"""Tests for scripts in the Tools directory.
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This file contains regression tests for some of the scripts found in the
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Tools directory of a Python checkout or tarball, such as reindent.py.
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"""
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import os
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import sys
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import importlib.machinery
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import unittest
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from unittest import mock
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import shutil
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import subprocess
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import sysconfig
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import tempfile
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import textwrap
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from test import support
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from test.script_helper import assert_python_ok, temp_dir
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if not sysconfig.is_python_build():
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# XXX some installers do contain the tools, should we detect that
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# and run the tests in that case too?
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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__))),
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'Tools')
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scriptsdir = os.path.join(basepath, 'scripts')
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class ReindentTests(unittest.TestCase):
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script = os.path.join(scriptsdir, 'reindent.py')
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def test_noargs(self):
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assert_python_ok(self.script)
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def test_help(self):
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rc, out, err = assert_python_ok(self.script, '-h')
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self.assertEqual(out, b'')
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self.assertGreater(err, b'')
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class PindentTests(unittest.TestCase):
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script = os.path.join(scriptsdir, 'pindent.py')
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def assertFileEqual(self, fn1, fn2):
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with open(fn1) as f1, open(fn2) as f2:
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self.assertEqual(f1.readlines(), f2.readlines())
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def pindent(self, source, *args):
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with subprocess.Popen(
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(sys.executable, self.script) + args,
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stdin=subprocess.PIPE, stdout=subprocess.PIPE,
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universal_newlines=True) as proc:
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out, err = proc.communicate(source)
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self.assertIsNone(err)
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return out
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def lstriplines(self, data):
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return '\n'.join(line.lstrip() for line in data.splitlines()) + '\n'
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def test_selftest(self):
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self.maxDiff = None
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with temp_dir() as directory:
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data_path = os.path.join(directory, '_test.py')
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with open(self.script) as f:
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closed = f.read()
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with open(data_path, 'w') as f:
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f.write(closed)
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rc, out, err = assert_python_ok(self.script, '-d', data_path)
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self.assertEqual(out, b'')
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self.assertEqual(err, b'')
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backup = data_path + '~'
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self.assertTrue(os.path.exists(backup))
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with open(backup) as f:
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self.assertEqual(f.read(), closed)
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with open(data_path) as f:
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clean = f.read()
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compile(clean, '_test.py', 'exec')
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self.assertEqual(self.pindent(clean, '-c'), closed)
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self.assertEqual(self.pindent(closed, '-d'), clean)
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rc, out, err = assert_python_ok(self.script, '-c', data_path)
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self.assertEqual(out, b'')
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self.assertEqual(err, b'')
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with open(backup) as f:
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self.assertEqual(f.read(), clean)
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with open(data_path) as f:
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self.assertEqual(f.read(), closed)
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broken = self.lstriplines(closed)
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with open(data_path, 'w') as f:
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f.write(broken)
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rc, out, err = assert_python_ok(self.script, '-r', data_path)
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self.assertEqual(out, b'')
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self.assertEqual(err, b'')
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with open(backup) as f:
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self.assertEqual(f.read(), broken)
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with open(data_path) as f:
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indented = f.read()
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compile(indented, '_test.py', 'exec')
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self.assertEqual(self.pindent(broken, '-r'), indented)
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def pindent_test(self, clean, closed):
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self.assertEqual(self.pindent(clean, '-c'), closed)
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self.assertEqual(self.pindent(closed, '-d'), clean)
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broken = self.lstriplines(closed)
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self.assertEqual(self.pindent(broken, '-r', '-e', '-s', '4'), closed)
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def test_statements(self):
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clean = textwrap.dedent("""\
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if a:
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pass
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if a:
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pass
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else:
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pass
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if a:
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pass
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elif:
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pass
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else:
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pass
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while a:
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break
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while a:
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break
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else:
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pass
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for i in a:
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break
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for i in a:
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break
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else:
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pass
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try:
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pass
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finally:
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pass
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try:
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pass
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except TypeError:
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pass
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except ValueError:
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pass
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else:
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pass
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try:
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pass
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except TypeError:
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pass
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except ValueError:
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pass
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finally:
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pass
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with a:
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pass
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class A:
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pass
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def f():
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pass
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""")
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closed = textwrap.dedent("""\
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if a:
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pass
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# end if
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if a:
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pass
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else:
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pass
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# end if
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if a:
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pass
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elif:
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pass
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else:
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pass
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# end if
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while a:
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break
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# end while
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while a:
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break
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else:
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pass
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# end while
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for i in a:
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break
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# end for
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for i in a:
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break
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else:
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pass
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# end for
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try:
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pass
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finally:
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pass
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# end try
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try:
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pass
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except TypeError:
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pass
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except ValueError:
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pass
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else:
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pass
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# end try
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try:
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pass
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except TypeError:
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pass
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except ValueError:
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pass
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finally:
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pass
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# end try
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with a:
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pass
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# end with
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class A:
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pass
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# end class A
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def f():
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pass
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# end def f
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""")
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self.pindent_test(clean, closed)
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def test_multilevel(self):
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clean = textwrap.dedent("""\
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def foobar(a, b):
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if a == b:
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a = a+1
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elif a < b:
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b = b-1
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if b > a: a = a-1
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else:
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print 'oops!'
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""")
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closed = textwrap.dedent("""\
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def foobar(a, b):
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if a == b:
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a = a+1
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elif a < b:
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b = b-1
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if b > a: a = a-1
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# end if
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else:
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print 'oops!'
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# end if
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# end def foobar
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""")
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self.pindent_test(clean, closed)
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def test_preserve_indents(self):
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clean = textwrap.dedent("""\
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if a:
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if b:
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pass
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""")
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closed = textwrap.dedent("""\
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if a:
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if b:
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pass
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# end if
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# end if
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""")
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self.assertEqual(self.pindent(clean, '-c'), closed)
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self.assertEqual(self.pindent(closed, '-d'), clean)
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broken = self.lstriplines(closed)
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self.assertEqual(self.pindent(broken, '-r', '-e', '-s', '9'), closed)
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clean = textwrap.dedent("""\
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if a:
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\tif b:
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\t\tpass
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""")
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closed = textwrap.dedent("""\
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if a:
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\tif b:
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\t\tpass
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\t# end if
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# end if
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""")
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self.assertEqual(self.pindent(clean, '-c'), closed)
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self.assertEqual(self.pindent(closed, '-d'), clean)
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broken = self.lstriplines(closed)
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self.assertEqual(self.pindent(broken, '-r'), closed)
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def test_escaped_newline(self):
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clean = textwrap.dedent("""\
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class\\
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\\
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A:
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def\
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\\
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f:
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pass
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""")
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closed = textwrap.dedent("""\
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class\\
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\\
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A:
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def\
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\\
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f:
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pass
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# end def f
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# end class A
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""")
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self.assertEqual(self.pindent(clean, '-c'), closed)
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self.assertEqual(self.pindent(closed, '-d'), clean)
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def test_empty_line(self):
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clean = textwrap.dedent("""\
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if a:
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pass
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""")
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closed = textwrap.dedent("""\
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if a:
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pass
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# end if
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""")
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self.pindent_test(clean, closed)
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def test_oneline(self):
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clean = textwrap.dedent("""\
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if a: pass
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""")
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closed = textwrap.dedent("""\
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if a: pass
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# end if
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""")
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self.pindent_test(clean, closed)
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class TestSundryScripts(unittest.TestCase):
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# At least make sure the rest don't have syntax errors. When tests are
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# added for a script it should be added to the whitelist below.
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# scripts that have independent tests.
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whitelist = ['reindent.py', 'pdeps.py', 'gprof2html']
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# scripts that can't be imported without running
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blacklist = ['make_ctype.py']
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# scripts that use windows-only modules
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windows_only = ['win_add2path.py']
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# blacklisted for other reasons
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other = ['analyze_dxp.py']
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skiplist = blacklist + whitelist + windows_only + other
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def setUp(self):
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cm = support.DirsOnSysPath(scriptsdir)
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cm.__enter__()
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self.addCleanup(cm.__exit__)
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def test_sundry(self):
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for fn in os.listdir(scriptsdir):
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if fn.endswith('.py') and fn not in self.skiplist:
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__import__(fn[:-3])
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@unittest.skipIf(sys.platform != "win32", "Windows-only test")
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def test_sundry_windows(self):
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for fn in self.windows_only:
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__import__(fn[:-3])
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@unittest.skipIf(not support.threading, "test requires _thread module")
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def test_analyze_dxp_import(self):
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if hasattr(sys, 'getdxp'):
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import analyze_dxp
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else:
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with self.assertRaises(RuntimeError):
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import analyze_dxp
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class PdepsTests(unittest.TestCase):
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@classmethod
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def setUpClass(self):
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path = os.path.join(scriptsdir, 'pdeps.py')
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loader = importlib.machinery.SourceFileLoader('pdeps', path)
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self.pdeps = loader.load_module()
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@classmethod
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def tearDownClass(self):
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if 'pdeps' in sys.modules:
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del sys.modules['pdeps']
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def test_process_errors(self):
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# Issue #14492: m_import.match(line) can be None.
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with tempfile.TemporaryDirectory() as tmpdir:
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fn = os.path.join(tmpdir, 'foo')
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with open(fn, 'w') as stream:
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stream.write("#!/this/will/fail")
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self.pdeps.process(fn, {})
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def test_inverse_attribute_error(self):
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# Issue #14492: this used to fail with an AttributeError.
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self.pdeps.inverse({'a': []})
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class Gprof2htmlTests(unittest.TestCase):
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def setUp(self):
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path = os.path.join(scriptsdir, 'gprof2html.py')
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loader = importlib.machinery.SourceFileLoader('gprof2html', path)
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self.gprof = loader.load_module()
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oldargv = sys.argv
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def fixup():
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sys.argv = oldargv
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self.addCleanup(fixup)
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sys.argv = []
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def test_gprof(self):
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# Issue #14508: this used to fail with an NameError.
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with mock.patch.object(self.gprof, 'webbrowser') as wmock, \
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tempfile.TemporaryDirectory() as tmpdir:
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fn = os.path.join(tmpdir, 'abc')
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open(fn, 'w').close()
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sys.argv = ['gprof2html', fn]
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self.gprof.main()
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self.assertTrue(wmock.open.called)
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# Run the tests in Tools/parser/test_unparse.py
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with support.DirsOnSysPath(os.path.join(basepath, 'parser')):
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from test_unparse import UnparseTestCase
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from test_unparse import DirectoryTestCase
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def test_main():
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support.run_unittest(*[obj for obj in globals().values()
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if isinstance(obj, type)])
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if __name__ == '__main__':
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unittest.main()
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