| 1 | #!/usr/bin/env python2
|
| 2 | """
|
| 3 | history_test.py: Tests for history.py
|
| 4 | """
|
| 5 | from __future__ import print_function
|
| 6 |
|
| 7 | import unittest
|
| 8 | import sys
|
| 9 |
|
| 10 | from core import test_lib
|
| 11 | from core import util
|
| 12 | from osh import history # module under test
|
| 13 | from frontend import parse_lib
|
| 14 |
|
| 15 | # TODO: This can be replaced by the real thing! Call read_history_file
|
| 16 |
|
| 17 |
|
| 18 | class _MockReadlineHistory(object):
|
| 19 |
|
| 20 | def __init__(self, items):
|
| 21 | self.items = items
|
| 22 |
|
| 23 | def get_current_history_length(self):
|
| 24 | return len(self.items)
|
| 25 |
|
| 26 | def get_history_item(self, one_based_index):
|
| 27 | try:
|
| 28 | return self.items[one_based_index - 1]
|
| 29 | except IndexError:
|
| 30 | return None # matches what readline does
|
| 31 |
|
| 32 |
|
| 33 | def _MakeHistoryEvaluator(history_items):
|
| 34 | parse_ctx = test_lib.InitParseContext()
|
| 35 | parse_ctx.Init_Trail(parse_lib.Trail())
|
| 36 |
|
| 37 | debug_f = util.DebugFile(sys.stdout)
|
| 38 | readline = _MockReadlineHistory(history_items)
|
| 39 | return history.Evaluator(readline, parse_ctx, debug_f)
|
| 40 |
|
| 41 |
|
| 42 | class HistoryEvaluatorTest(unittest.TestCase):
|
| 43 |
|
| 44 | def testInvalidHistoryItems(self):
|
| 45 | hist_ev = _MakeHistoryEvaluator([
|
| 46 | '(',
|
| 47 | ])
|
| 48 | # If you can't parse a command, then it uses the "trail", which is somewhat
|
| 49 | # ill-defined, but causes an error in this case.
|
| 50 | self.assertRaises(util.HistoryError, hist_ev.Eval, 'echo !$')
|
| 51 |
|
| 52 | hist_ev = _MakeHistoryEvaluator([
|
| 53 | 'a( )',
|
| 54 | ])
|
| 55 | self.assertRaises(util.HistoryError, hist_ev.Eval, 'echo !$')
|
| 56 |
|
| 57 | def testReplacements(self):
|
| 58 | hist_ev = _MakeHistoryEvaluator([
|
| 59 | 'echo 1',
|
| 60 | 'echo ${two:-}',
|
| 61 | 'ls /echo/',
|
| 62 | ])
|
| 63 |
|
| 64 | self.assertEqual('echo hi', hist_ev.Eval('echo hi'))
|
| 65 |
|
| 66 | # Search for prefix
|
| 67 | self.assertEqual('echo ${two:-}\n', hist_ev.Eval('!echo\n'))
|
| 68 | # Search for substring
|
| 69 | self.assertEqual('echo ${two:-} ', hist_ev.Eval('!?two '))
|
| 70 |
|
| 71 | # Indexes and negative indexes
|
| 72 | self.assertEqual('echo 1', hist_ev.Eval('!1'))
|
| 73 | self.assertEqual('ls /echo/', hist_ev.Eval('!-1'))
|
| 74 | self.assertEqual('echo ${two:-}', hist_ev.Eval('!-2'))
|
| 75 |
|
| 76 | self.assertRaises(util.HistoryError, hist_ev.Eval, 'echo !-999')
|
| 77 | self.assertRaises(util.HistoryError, hist_ev.Eval, '!999')
|
| 78 |
|
| 79 | self.assertEqual('ls /echo/', hist_ev.Eval('!!'))
|
| 80 |
|
| 81 | self.assertEqual('echo /echo/', hist_ev.Eval('echo !$'))
|
| 82 |
|
| 83 | def testBug(self):
|
| 84 | hist_ev = _MakeHistoryEvaluator([
|
| 85 | 'echo ${two:-}',
|
| 86 | ])
|
| 87 | self.assertEqual('echo ${two:-}', hist_ev.Eval('echo !$'))
|
| 88 |
|
| 89 | # Commented out
|
| 90 | self.assertEqual('echo hi # !$', hist_ev.Eval('echo hi # !$'))
|
| 91 |
|
| 92 | # This is not technically a comment, but it's hard to re-lex.
|
| 93 | self.assertEqual('echo hi#!$', hist_ev.Eval('echo hi#!$'))
|
| 94 |
|
| 95 | # Workaround: the comment char can be single-quoted.
|
| 96 | self.assertEqual("echo 'hi#'${two:-}", hist_ev.Eval("echo 'hi#'!$"))
|
| 97 |
|
| 98 | def testParsing(self):
|
| 99 | hist_ev = _MakeHistoryEvaluator([
|
| 100 | 'echo 1',
|
| 101 | 'echo $three ${4:-} "${five@P}"',
|
| 102 | ])
|
| 103 | self.assertEqual('echo "${five@P}"', hist_ev.Eval('echo !$'))
|
| 104 | self.assertEqual('echo $three', hist_ev.Eval('echo !^'))
|
| 105 | self.assertEqual('echo -n $three ${4:-} "${five@P}"',
|
| 106 | hist_ev.Eval('echo -n !*'))
|
| 107 |
|
| 108 | def testNonCommands(self):
|
| 109 | hist_ev = _MakeHistoryEvaluator([
|
| 110 | 'echo hi | wc -l',
|
| 111 | ])
|
| 112 | self.assertEqual('echo -l', hist_ev.Eval('echo !$'))
|
| 113 |
|
| 114 | hist_ev = _MakeHistoryEvaluator([
|
| 115 | 'for i in 1 2 3; do echo xx; done',
|
| 116 | ])
|
| 117 | self.assertEqual('echo xx', hist_ev.Eval('echo !$'))
|
| 118 |
|
| 119 | hist_ev = _MakeHistoryEvaluator([
|
| 120 | '{ echo yy; }',
|
| 121 | ])
|
| 122 | self.assertEqual('echo yy', hist_ev.Eval('echo !$'))
|
| 123 |
|
| 124 |
|
| 125 | if __name__ == '__main__':
|
| 126 | unittest.main()
|