OILS / frontend / args_test.py View on Github | oilshell.org

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