| 1 | """ |
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| 2 | Very minimal unittests for parts of the readline module. |
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| 3 | """ |
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| 4 | import os |
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| 5 | import unittest |
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| 6 | from test.test_support import run_unittest, import_module |
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| 7 | from test.script_helper import assert_python_ok |
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| 8 | |
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| 9 | # Skip tests if there is no readline module |
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| 10 | readline = import_module('readline') |
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| 11 | |
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| 12 | class TestHistoryManipulation (unittest.TestCase): |
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| 13 | """These tests were added to check that the libedit emulation on OSX and |
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| 14 | the "real" readline have the same interface for history manipulation. |
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| 15 | That's why the tests cover only a small subset of the interface. |
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| 16 | """ |
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| 17 | |
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| 18 | @unittest.skipUnless(hasattr(readline, "clear_history"), |
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| 19 | "The history update test cannot be run because the " |
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| 20 | "clear_history method is not available.") |
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| 21 | def testHistoryUpdates(self): |
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| 22 | readline.clear_history() |
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| 23 | |
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| 24 | readline.add_history("first line") |
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| 25 | readline.add_history("second line") |
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| 26 | |
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| 27 | self.assertEqual(readline.get_history_item(0), None) |
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| 28 | self.assertEqual(readline.get_history_item(1), "first line") |
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| 29 | self.assertEqual(readline.get_history_item(2), "second line") |
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| 30 | |
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| 31 | readline.replace_history_item(0, "replaced line") |
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| 32 | self.assertEqual(readline.get_history_item(0), None) |
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| 33 | self.assertEqual(readline.get_history_item(1), "replaced line") |
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| 34 | self.assertEqual(readline.get_history_item(2), "second line") |
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| 35 | |
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| 36 | self.assertEqual(readline.get_current_history_length(), 2) |
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| 37 | |
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| 38 | readline.remove_history_item(0) |
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| 39 | self.assertEqual(readline.get_history_item(0), None) |
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| 40 | self.assertEqual(readline.get_history_item(1), "second line") |
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| 41 | |
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| 42 | self.assertEqual(readline.get_current_history_length(), 1) |
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| 43 | |
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| 44 | |
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| 45 | class TestReadline(unittest.TestCase): |
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| 46 | |
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| 47 | @unittest.skipIf(readline._READLINE_VERSION < 0x0600 |
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| 48 | and "libedit" not in readline.__doc__, |
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| 49 | "not supported in this library version") |
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| 50 | def test_init(self): |
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| 51 | # Issue #19884: Ensure that the ANSI sequence "\033[1034h" is not |
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| 52 | # written into stdout when the readline module is imported and stdout |
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| 53 | # is redirected to a pipe. |
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| 54 | rc, stdout, stderr = assert_python_ok('-c', 'import readline', |
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| 55 | TERM='xterm-256color') |
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| 56 | self.assertEqual(stdout, b'') |
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| 57 | |
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| 58 | |
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| 59 | def test_main(): |
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| 60 | run_unittest(TestHistoryManipulation, TestReadline) |
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| 61 | |
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| 62 | if __name__ == "__main__": |
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| 63 | test_main() |
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