mirror of https://github.com/python/cpython
341 lines
8.5 KiB
Python
341 lines
8.5 KiB
Python
"""Tests for the pindent script in the Tools directory."""
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import os
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import sys
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import unittest
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import subprocess
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import textwrap
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from test import support
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from test.support import os_helper
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from test.support.script_helper import assert_python_ok
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from test.test_tools import scriptsdir, skip_if_missing
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skip_if_missing()
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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 os_helper.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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if __name__ == '__main__':
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unittest.main()
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