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), None, None, None, 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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