From b48cb29ac4b9ac6b7e2a835c70c4fdd1b5333bcf Mon Sep 17 00:00:00 2001 From: R David Murray Date: Thu, 2 Oct 2014 22:42:42 -0400 Subject: [PATCH] #8473: Add tests that doctest uses universal newlines in testfile. Python3 does not have the bug covered by the issue. --- Lib/test/test_doctest.py | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/Lib/test/test_doctest.py b/Lib/test/test_doctest.py index 56193e87b1c..4137d5aa0bf 100644 --- a/Lib/test/test_doctest.py +++ b/Lib/test/test_doctest.py @@ -2613,6 +2613,36 @@ Test the verbose output: >>> sys.argv = save_argv """ +def test_lineendings(): r""" +*nix systems use \n line endings, while Windows systems use \r\n. Python +handles this using universal newline mode for reading files. Let's make +sure doctest does so (issue 8473) by creating temporary test files using each +of the two line disciplines. One of the two will be the "wrong" one for the +platform the test is run on. + +Windows line endings first: + + >>> import tempfile, os + >>> fn = tempfile.mktemp() + >>> with open(fn, 'w') as f: + ... f.write('Test:\r\n\r\n >>> x = 1 + 1\r\n\r\nDone.\r\n') + 35 + >>> doctest.testfile(fn, False) + TestResults(failed=0, attempted=1) + >>> os.remove(fn) + +And now *nix line endings: + + >>> fn = tempfile.mktemp() + >>> with open(fn, 'w') as f: + ... f.write('Test:\n\n >>> x = 1 + 1\n\nDone.\n') + 30 + >>> doctest.testfile(fn, False) + TestResults(failed=0, attempted=1) + >>> os.remove(fn) + +""" + def test_testmod(): r""" Tests for the testmod function. More might be useful, but for now we're just testing the case raised by Issue 6195, where trying to doctest a C module would