cpython/Lib/test/test_tools/test_fixcid.py

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'''Test Tools/scripts/fixcid.py.'''
from io import StringIO
import os, os.path
import runpy
import sys
from test import support
from test.test_tools import skip_if_missing, scriptsdir
import unittest
skip_if_missing()
class Test(unittest.TestCase):
def test_parse_strings(self):
old1 = 'int xx = "xx\\"xx"[xx];\n'
old2 = "int xx = 'x\\'xx' + xx;\n"
output = self.run_script(old1 + old2)
new1 = 'int yy = "xx\\"xx"[yy];\n'
new2 = "int yy = 'x\\'xx' + yy;\n"
self.assertMultiLineEqual(output,
"1\n"
"< {old1}"
"> {new1}"
"{new1}"
"2\n"
"< {old2}"
"> {new2}"
"{new2}".format(old1=old1, old2=old2, new1=new1, new2=new2)
)
def test_alter_comments(self):
output = self.run_script(
substfile=
"xx yy\n"
"*aa bb\n",
args=("-c", "-",),
input=
"/* xx altered */\n"
"int xx;\n"
"/* aa unaltered */\n"
"int aa;\n",
)
self.assertMultiLineEqual(output,
"1\n"
"< /* xx altered */\n"
"> /* yy altered */\n"
"/* yy altered */\n"
"2\n"
"< int xx;\n"
"> int yy;\n"
"int yy;\n"
"/* aa unaltered */\n"
"4\n"
"< int aa;\n"
"> int bb;\n"
"int bb;\n"
)
def test_directory(self):
os.mkdir(support.TESTFN)
self.addCleanup(support.rmtree, support.TESTFN)
c_filename = os.path.join(support.TESTFN, "file.c")
with open(c_filename, "w") as file:
file.write("int xx;\n")
with open(os.path.join(support.TESTFN, "file.py"), "w") as file:
file.write("xx = 'unaltered'\n")
script = os.path.join(scriptsdir, "fixcid.py")
output = self.run_script(args=(support.TESTFN,))
self.assertMultiLineEqual(output,
"{}:\n"
"1\n"
'< int xx;\n'
'> int yy;\n'.format(c_filename)
)
def run_script(self, input="", *, args=("-",), substfile="xx yy\n"):
substfilename = support.TESTFN + ".subst"
with open(substfilename, "w") as file:
file.write(substfile)
self.addCleanup(support.unlink, substfilename)
argv = ["fixcid.py", "-s", substfilename] + list(args)
script = os.path.join(scriptsdir, "fixcid.py")
with support.swap_attr(sys, "argv", argv), \
support.swap_attr(sys, "stdin", StringIO(input)), \
support.captured_stdout() as output, \
support.captured_stderr():
try:
runpy.run_path(script, run_name="__main__")
except SystemExit as exit:
self.assertEqual(exit.code, 0)
return output.getvalue()