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