| 1 | #!/usr/bin/env python2
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| 2 | """
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| 3 | args_test.py: Tests for args.py
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| 4 | """
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| 5 |
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| 6 | import unittest
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| 7 |
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| 8 | from _devbuild.gen.runtime_asdl import cmd_value
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| 9 | from _devbuild.gen.syntax_asdl import loc, loc_t
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| 10 | from _devbuild.gen.value_asdl import value
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| 11 | from core import error
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| 12 | from frontend import flag_spec
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| 13 | from frontend import args # module under test
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| 14 |
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| 15 | from typing import Tuple
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| 16 |
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| 17 |
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| 18 | def _MakeBuiltinArgv(argv):
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| 19 | """Different than test_lib.MakeBuiltinArgv()"""
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| 20 | argv = [''] + argv # add dummy since arg_vec includes argv[0]
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| 21 | # no location info
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| 22 | missing = loc.Missing # type: loc_t
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| 23 | return cmd_value.Argv(argv, [missing] * len(argv), False, None)
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| 24 |
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| 25 |
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| 26 | def _MakeReader(argv):
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| 27 | cmd_val = _MakeBuiltinArgv(argv)
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| 28 | arg_r = args.Reader(cmd_val.argv, locs=cmd_val.arg_locs)
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| 29 | arg_r.Next()
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| 30 | return arg_r
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| 31 |
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| 32 |
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| 33 | def _ParseCmdVal(spec, cmd_val):
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| 34 | # type: (cmd_value.Argv) -> Tuple[args._Attributes, int]
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| 35 | """For testing only."""
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| 36 | arg_r = args.Reader(cmd_val.argv, locs=cmd_val.arg_locs)
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| 37 | arg_r.Next() # move past the builtin name
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| 38 | return args.Parse(spec, arg_r), arg_r.i
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| 39 |
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| 40 |
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| 41 | class ArgsTest(unittest.TestCase):
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| 42 |
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| 43 | def testFlagSpecAndMore(self):
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| 44 | s = flag_spec._FlagSpecAndMore()
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| 45 | s.ShortFlag('-c', args.String)
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| 46 | s.ShortFlag('-i', args.String)
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| 47 |
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| 48 | s.LongFlag('--help')
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| 49 | s.LongFlag('--rcfile', args.String)
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| 50 | s.LongFlag('--rcdir', args.String)
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| 51 | s.LongFlag('--norc')
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| 52 |
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| 53 | s.LongFlag('--ast-format', ['text', 'html'])
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| 54 |
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| 55 | s.InitOptions()
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| 56 | s.Option('e', 'errexit')
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| 57 | s.Option('u', 'nounset')
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| 58 | s.Option(None, 'pipefail')
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| 59 |
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| 60 | # don't parse args afterward
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| 61 | arg_r = args.Reader(
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| 62 | ['-c', 'echo hi', '-e', '-o', 'nounset', 'foo', '--help'])
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| 63 | arg = args.ParseMore(s, arg_r)
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| 64 |
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| 65 | self.assertEqual(['foo', '--help'], arg_r.Rest())
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| 66 | self.assertEqual('echo hi', arg.attrs['c'].s)
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| 67 | self.assertEqual(False, arg.attrs['help'].b)
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| 68 | self.assertEqual(value.Undef, arg.attrs['i'])
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| 69 |
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| 70 | self.assertEqual([('errexit', True), ('nounset', True)],
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| 71 | arg.opt_changes)
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| 72 |
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| 73 | arg_r = args.Reader(['+e', '+o', 'nounset', '-o', 'pipefail', 'foo'])
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| 74 | arg = args.ParseMore(s, arg_r)
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| 75 |
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| 76 | self.assertEqual(['foo'], arg_r.Rest())
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| 77 | self.assertEqual(value.Undef, arg.attrs['i'])
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| 78 | self.assertEqual([('errexit', False), ('nounset', False),
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| 79 | ('pipefail', True)], arg.opt_changes)
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| 80 |
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| 81 | arg_r = args.Reader([
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| 82 | '-c', 'echo hi', '--help', '--rcfile', 'bashrc', '--rcdir',
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| 83 | 'bashrcdir'
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| 84 | ])
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| 85 | arg = args.ParseMore(s, arg_r)
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| 86 | self.assertEqual('echo hi', arg.attrs['c'].s)
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| 87 | self.assertEqual(True, arg.attrs['help'].b)
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| 88 | self.assertEqual('bashrc', arg.attrs['rcfile'].s)
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| 89 | self.assertEqual('bashrcdir', arg.attrs['rcdir'].s)
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| 90 |
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| 91 | # This is an odd syntax!
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| 92 | arg_r = args.Reader(['-euo', 'pipefail'])
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| 93 | arg = args.ParseMore(s, arg_r)
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| 94 | self.assertEqual([('errexit', True), ('nounset', True),
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| 95 | ('pipefail', True)], arg.opt_changes)
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| 96 | self.assertEqual(2, arg_r.i)
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| 97 |
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| 98 | # Even weirder!
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| 99 | arg_r = args.Reader(['+oeu', 'pipefail'])
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| 100 | arg = args.ParseMore(s, arg_r)
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| 101 | self.assertEqual([('pipefail', False), ('errexit', False),
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| 102 | ('nounset', False)], arg.opt_changes)
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| 103 | self.assertEqual(2, arg_r.i)
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| 104 |
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| 105 | # Even weirder!
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| 106 | arg_r = args.Reader(['+oo', 'pipefail', 'errexit'])
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| 107 | arg = args.ParseMore(s, arg_r)
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| 108 | self.assertEqual([('pipefail', False), ('errexit', False)],
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| 109 | arg.opt_changes)
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| 110 | self.assertEqual(3, arg_r.i)
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| 111 |
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| 112 | # Now this is an arg. Gah.
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| 113 | arg_r = args.Reader(['+o', 'pipefail', 'errexit'])
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| 114 | arg = args.ParseMore(s, arg_r)
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| 115 | self.assertEqual([('pipefail', False)], arg.opt_changes)
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| 116 | self.assertEqual(['errexit'], arg_r.Rest())
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| 117 |
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| 118 | # NOTE: 'set -ooo' and 'set -o -o -o' bash runs 'set -o' three times!
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| 119 | # We're not going to replicate that silly behavior.
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| 120 |
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| 121 | def testChoices(self):
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| 122 | s = flag_spec._FlagSpecAndMore()
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| 123 | s.LongFlag('--ast-format', ['text', 'html'])
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| 124 |
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| 125 | arg_r = args.Reader(['--ast-format', 'text'])
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| 126 | arg = args.ParseMore(s, arg_r)
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| 127 | self.assertEqual('text', arg.attrs['ast_format'].s)
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| 128 |
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| 129 | self.assertRaises(error.Usage, args.Parse, s,
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| 130 | args.Reader(['--ast-format', 'oops']))
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| 131 |
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| 132 | def testFlagSpec(self):
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| 133 | s = flag_spec._FlagSpec()
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| 134 | s.ShortFlag('-f')
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| 135 | s.ShortFlag('-n')
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| 136 | s.ShortFlag('-d', args.String) # delimiter
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| 137 |
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| 138 | # like declare +rx
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| 139 | s.PlusFlag('r')
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| 140 | s.PlusFlag('x')
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| 141 |
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| 142 | arg, i = _ParseCmdVal(s, _MakeBuiltinArgv(['-f', 'foo', 'bar']))
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| 143 | self.assertEqual(1, i - 1)
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| 144 | self.assertEqual(True, arg.attrs['f'].b)
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| 145 | #self.assertEqual(False, arg.n)
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| 146 | self.assertEqual(False, arg.attrs['n'].b)
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| 147 |
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| 148 | self.assertRaises(error.Usage, _ParseCmdVal, s,
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| 149 | _MakeBuiltinArgv(['-f', '-d']))
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| 150 |
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| 151 | arg, i = _ParseCmdVal(s, _MakeBuiltinArgv(['-d', ' ', 'foo']))
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| 152 | self.assertEqual(2, i - 1)
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| 153 | self.assertEqual(' ', arg.attrs['d'].s)
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| 154 |
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| 155 | arg, i = _ParseCmdVal(s, _MakeBuiltinArgv(['-d,', 'foo']))
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| 156 | self.assertEqual(1, i - 1)
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| 157 | self.assertEqual(',', arg.attrs['d'].s)
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| 158 | #self.assertEqual(False, arg.r)
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| 159 | self.assertEqual(value.Undef, arg.attrs['r'])
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| 160 |
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| 161 | arg, i = _ParseCmdVal(s, _MakeBuiltinArgv(['-d,', '-r', '-x']))
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| 162 | self.assertEqual(4, i)
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| 163 | self.assertEqual(',', arg.attrs['d'].s)
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| 164 | self.assertEqual('-', arg.attrs['r'].s)
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| 165 | self.assertEqual('-', arg.attrs['x'].s)
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| 166 |
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| 167 | arg, i = _ParseCmdVal(s, _MakeBuiltinArgv(['-d,', '+rx']))
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| 168 | self.assertEqual(3, i)
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| 169 | self.assertEqual(',', arg.attrs['d'].s)
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| 170 | self.assertEqual('+', arg.attrs['r'].s)
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| 171 | self.assertEqual('+', arg.attrs['x'].s)
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| 172 |
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| 173 | def testReadFlagSpec(self):
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| 174 | s = flag_spec._FlagSpec()
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| 175 | s.ShortFlag('-r') # no backslash escapes
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| 176 | s.ShortFlag('-t', args.Float) # timeout
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| 177 | s.ShortFlag('-p', args.String) # prompt string
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| 178 |
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| 179 | arg, i = _ParseCmdVal(s, _MakeBuiltinArgv(['-r', 'foo']))
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| 180 | self.assertEqual(True, arg.attrs['r'].b)
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| 181 | self.assertEqual(1, i - 1)
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| 182 |
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| 183 | arg, i = _ParseCmdVal(s, _MakeBuiltinArgv(['-p', '>']))
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| 184 | self.assertEqual(False, arg.attrs['r'].b)
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| 185 | self.assertEqual('>', arg.attrs['p'].s)
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| 186 | self.assertEqual(2, i - 1)
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| 187 |
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| 188 | arg, i = _ParseCmdVal(s, _MakeBuiltinArgv(['-rp', '>']))
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| 189 | self.assertEqual(True, arg.attrs['r'].b)
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| 190 | self.assertEqual('>', arg.attrs['p'].s)
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| 191 | self.assertEqual(2, i - 1)
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| 192 |
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| 193 | # REALLY ANNOYING: The first r is a flag, the second R is the prompt! Only
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| 194 | # works in that order
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| 195 | # Does that mean anything with an arity consumes the rest?
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| 196 | # read -p line
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| 197 | #
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| 198 | arg, i = _ParseCmdVal(s, _MakeBuiltinArgv(['-rpr']))
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| 199 | self.assertEqual(True, arg.attrs['r'].b)
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| 200 | self.assertEqual('r', arg.attrs['p'].s)
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| 201 | self.assertEqual(1, i - 1)
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| 202 |
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| 203 | argv = ['-t1.5', '>']
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| 204 | arg, i = _ParseCmdVal(s, _MakeBuiltinArgv(argv))
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| 205 | self.assertEqual(1.5, arg.attrs['t'].f)
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| 206 | self.assertEqual(1, i - 1)
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| 207 |
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| 208 | # Invalid flag 'z'
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| 209 | self.assertRaises(error.Usage, _ParseCmdVal, s,
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| 210 | _MakeBuiltinArgv(['-rz']))
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| 211 |
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| 212 | def testParseLikeEcho(self):
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| 213 | s = flag_spec._FlagSpec()
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| 214 | s.ShortFlag('-e') # no backslash escapes
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| 215 | s.ShortFlag('-n')
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| 216 |
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| 217 | arg_r = _MakeReader(['-e', '-n', 'foo'])
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| 218 | arg = args.ParseLikeEcho(s, arg_r)
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| 219 | self.assertEqual(True, arg.attrs['e'].b)
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| 220 | self.assertEqual(True, arg.attrs['n'].b)
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| 221 | self.assertEqual(3, arg_r.i)
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| 222 |
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| 223 | arg_r = _MakeReader(['-en', 'foo'])
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| 224 | arg = args.ParseLikeEcho(s, arg_r)
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| 225 | self.assertEqual(True, arg.attrs['e'].b)
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| 226 | self.assertEqual(True, arg.attrs['n'].b)
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| 227 | self.assertEqual(2, arg_r.i)
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| 228 |
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| 229 | arg_r = _MakeReader(['-ez', 'foo'])
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| 230 | arg = args.ParseLikeEcho(s, arg_r)
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| 231 | self.assertEqual(False, arg.attrs['e'].b)
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| 232 | self.assertEqual(False, arg.attrs['n'].b)
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| 233 | self.assertEqual(1, arg_r.i)
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| 234 |
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| 235 |
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| 236 | if __name__ == '__main__':
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| 237 | unittest.main()
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