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add readline.append_history_file (closes #22940)

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patch by "bru"
This commit is contained in:
Benjamin Peterson 2014-11-26 13:58:16 -06:00
parent aacfcccdc3
commit 33f8f15bdd
4 changed files with 106 additions and 2 deletions
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40
Lib/test/test_readline.py
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@ -2,8 +2,9 @@
Very minimal unittests for parts of the readline module.
"""
import os
import tempfile
import unittest
from test.support import run_unittest, import_module
from test.support import run_unittest, import_module, unlink
from test.script_helper import assert_python_ok
# Skip tests if there is no readline module
@ -42,6 +43,43 @@ class TestHistoryManipulation (unittest.TestCase):
self.assertEqual(readline.get_current_history_length(), 1)
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):