diff options
Diffstat (limited to 'lib/python2.7/lib2to3/tests/test_main.py')
| -rw-r--r-- | lib/python2.7/lib2to3/tests/test_main.py | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/lib/python2.7/lib2to3/tests/test_main.py b/lib/python2.7/lib2to3/tests/test_main.py new file mode 100644 index 0000000..04131cf --- /dev/null +++ b/lib/python2.7/lib2to3/tests/test_main.py @@ -0,0 +1,149 @@ +# -*- coding: utf-8 -*- +import sys +import codecs +import logging +import os +import re +import shutil +import StringIO +import sys +import tempfile +import unittest + +from lib2to3 import main + + +TEST_DATA_DIR = os.path.join(os.path.dirname(__file__), "data") +PY2_TEST_MODULE = os.path.join(TEST_DATA_DIR, "py2_test_grammar.py") + + +class TestMain(unittest.TestCase): + + if not hasattr(unittest.TestCase, 'assertNotRegex'): + # This method was only introduced in 3.2. + def assertNotRegex(self, text, regexp, msg=None): + import re + if not hasattr(regexp, 'search'): + regexp = re.compile(regexp) + if regexp.search(text): + self.fail("regexp %s MATCHED text %r" % (regexp.pattern, text)) + + def setUp(self): + self.temp_dir = None # tearDown() will rmtree this directory if set. + + def tearDown(self): + # Clean up logging configuration down by main. + del logging.root.handlers[:] + if self.temp_dir: + shutil.rmtree(self.temp_dir) + + def run_2to3_capture(self, args, in_capture, out_capture, err_capture): + save_stdin = sys.stdin + save_stdout = sys.stdout + save_stderr = sys.stderr + sys.stdin = in_capture + sys.stdout = out_capture + sys.stderr = err_capture + try: + return main.main("lib2to3.fixes", args) + finally: + sys.stdin = save_stdin + sys.stdout = save_stdout + sys.stderr = save_stderr + + def test_unencodable_diff(self): + input_stream = StringIO.StringIO(u"print 'nothing'\nprint u'über'\n") + out = StringIO.StringIO() + out_enc = codecs.getwriter("ascii")(out) + err = StringIO.StringIO() + ret = self.run_2to3_capture(["-"], input_stream, out_enc, err) + self.assertEqual(ret, 0) + output = out.getvalue() + self.assertIn("-print 'nothing'", output) + self.assertIn("WARNING: couldn't encode <stdin>'s diff for " + "your terminal", err.getvalue()) + + def setup_test_source_trees(self): + """Setup a test source tree and output destination tree.""" + self.temp_dir = tempfile.mkdtemp() # tearDown() cleans this up. + self.py2_src_dir = os.path.join(self.temp_dir, "python2_project") + self.py3_dest_dir = os.path.join(self.temp_dir, "python3_project") + os.mkdir(self.py2_src_dir) + os.mkdir(self.py3_dest_dir) + # Turn it into a package with a few files. + self.setup_files = [] + open(os.path.join(self.py2_src_dir, "__init__.py"), "w").close() + self.setup_files.append("__init__.py") + shutil.copy(PY2_TEST_MODULE, self.py2_src_dir) + self.setup_files.append(os.path.basename(PY2_TEST_MODULE)) + self.trivial_py2_file = os.path.join(self.py2_src_dir, "trivial.py") + self.init_py2_file = os.path.join(self.py2_src_dir, "__init__.py") + with open(self.trivial_py2_file, "w") as trivial: + trivial.write("print 'I need a simple conversion.'") + self.setup_files.append("trivial.py") + + def test_filename_changing_on_output_single_dir(self): + """2to3 a single directory with a new output dir and suffix.""" + self.setup_test_source_trees() + out = StringIO.StringIO() + err = StringIO.StringIO() + suffix = "TEST" + ret = self.run_2to3_capture( + ["-n", "--add-suffix", suffix, "--write-unchanged-files", + "--no-diffs", "--output-dir", + self.py3_dest_dir, self.py2_src_dir], + StringIO.StringIO(""), out, err) + self.assertEqual(ret, 0) + stderr = err.getvalue() + self.assertIn(" implies -w.", stderr) + self.assertIn( + "Output in %r will mirror the input directory %r layout" % ( + self.py3_dest_dir, self.py2_src_dir), stderr) + self.assertEqual(set(name+suffix for name in self.setup_files), + set(os.listdir(self.py3_dest_dir))) + for name in self.setup_files: + self.assertIn("Writing converted %s to %s" % ( + os.path.join(self.py2_src_dir, name), + os.path.join(self.py3_dest_dir, name+suffix)), stderr) + sep = re.escape(os.sep) + self.assertRegexpMatches( + stderr, r"No changes to .*/__init__\.py".replace("/", sep)) + self.assertNotRegex( + stderr, r"No changes to .*/trivial\.py".replace("/", sep)) + + def test_filename_changing_on_output_two_files(self): + """2to3 two files in one directory with a new output dir.""" + self.setup_test_source_trees() + err = StringIO.StringIO() + py2_files = [self.trivial_py2_file, self.init_py2_file] + expected_files = set(os.path.basename(name) for name in py2_files) + ret = self.run_2to3_capture( + ["-n", "-w", "--write-unchanged-files", + "--no-diffs", "--output-dir", self.py3_dest_dir] + py2_files, + StringIO.StringIO(""), StringIO.StringIO(), err) + self.assertEqual(ret, 0) + stderr = err.getvalue() + self.assertIn( + "Output in %r will mirror the input directory %r layout" % ( + self.py3_dest_dir, self.py2_src_dir), stderr) + self.assertEqual(expected_files, set(os.listdir(self.py3_dest_dir))) + + def test_filename_changing_on_output_single_file(self): + """2to3 a single file with a new output dir.""" + self.setup_test_source_trees() + err = StringIO.StringIO() + ret = self.run_2to3_capture( + ["-n", "-w", "--no-diffs", "--output-dir", self.py3_dest_dir, + self.trivial_py2_file], + StringIO.StringIO(""), StringIO.StringIO(), err) + self.assertEqual(ret, 0) + stderr = err.getvalue() + self.assertIn( + "Output in %r will mirror the input directory %r layout" % ( + self.py3_dest_dir, self.py2_src_dir), stderr) + self.assertEqual(set([os.path.basename(self.trivial_py2_file)]), + set(os.listdir(self.py3_dest_dir))) + + +if __name__ == '__main__': + unittest.main() |