| """ |
| Very minimal unittests for parts of the readline module. |
| """ |
| import os |
| import tempfile |
| import unittest |
| from test.support import import_module, unlink |
| from test.support.script_helper import assert_python_ok |
| |
| # Skip tests if there is no readline module |
| readline = import_module('readline') |
| |
| class TestHistoryManipulation (unittest.TestCase): |
| """ |
| These tests were added to check that the libedit emulation on OSX and the |
| "real" readline have the same interface for history manipulation. That's |
| why the tests cover only a small subset of the interface. |
| """ |
| |
| @unittest.skipUnless(hasattr(readline, "clear_history"), |
| "The history update test cannot be run because the " |
| "clear_history method is not available.") |
| def testHistoryUpdates(self): |
| readline.clear_history() |
| |
| readline.add_history("first line") |
| readline.add_history("second line") |
| |
| self.assertEqual(readline.get_history_item(0), None) |
| self.assertEqual(readline.get_history_item(1), "first line") |
| self.assertEqual(readline.get_history_item(2), "second line") |
| |
| readline.replace_history_item(0, "replaced line") |
| self.assertEqual(readline.get_history_item(0), None) |
| self.assertEqual(readline.get_history_item(1), "replaced line") |
| self.assertEqual(readline.get_history_item(2), "second line") |
| |
| self.assertEqual(readline.get_current_history_length(), 2) |
| |
| readline.remove_history_item(0) |
| self.assertEqual(readline.get_history_item(0), None) |
| self.assertEqual(readline.get_history_item(1), "second line") |
| |
| self.assertEqual(readline.get_current_history_length(), 1) |
| |
| @unittest.skipUnless(hasattr(readline, "append_history_file"), |
| "append_history not available") |
| def test_write_read_append(self): |
| hfile = tempfile.NamedTemporaryFile(delete=False) |
| hfile.close() |
| hfilename = hfile.name |
| self.addCleanup(unlink, hfilename) |
| |
| # test write-clear-read == nop |
| readline.clear_history() |
| readline.add_history("first line") |
| readline.add_history("second line") |
| readline.write_history_file(hfilename) |
| |
| readline.clear_history() |
| self.assertEqual(readline.get_current_history_length(), 0) |
| |
| readline.read_history_file(hfilename) |
| self.assertEqual(readline.get_current_history_length(), 2) |
| self.assertEqual(readline.get_history_item(1), "first line") |
| self.assertEqual(readline.get_history_item(2), "second line") |
| |
| # test append |
| readline.append_history_file(1, hfilename) |
| readline.clear_history() |
| readline.read_history_file(hfilename) |
| self.assertEqual(readline.get_current_history_length(), 3) |
| self.assertEqual(readline.get_history_item(1), "first line") |
| self.assertEqual(readline.get_history_item(2), "second line") |
| self.assertEqual(readline.get_history_item(3), "second line") |
| |
| # test 'no such file' behaviour |
| os.unlink(hfilename) |
| with self.assertRaises(FileNotFoundError): |
| readline.append_history_file(1, hfilename) |
| |
| # write_history_file can create the target |
| readline.write_history_file(hfilename) |
| |
| |
| class TestReadline(unittest.TestCase): |
| |
| @unittest.skipIf(readline._READLINE_VERSION < 0x0600 |
| and "libedit" not in readline.__doc__, |
| "not supported in this library version") |
| def test_init(self): |
| # Issue #19884: Ensure that the ANSI sequence "\033[1034h" is not |
| # written into stdout when the readline module is imported and stdout |
| # is redirected to a pipe. |
| rc, stdout, stderr = assert_python_ok('-c', 'import readline', |
| TERM='xterm-256color') |
| self.assertEqual(stdout, b'') |
| |
| |
| if __name__ == "__main__": |
| unittest.main() |