| 1 | #!/usr/bin/env python2
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| 2 | """state_test.py: Tests for state.py."""
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| 3 |
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| 4 | import unittest
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| 5 | import os.path
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| 6 |
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| 7 | from _devbuild.gen.id_kind_asdl import Id
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| 8 | from _devbuild.gen.runtime_asdl import scope_e
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| 9 | from _devbuild.gen.syntax_asdl import source, SourceLine
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| 10 | from _devbuild.gen.value_asdl import (value, value_e, sh_lvalue)
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| 11 | from asdl import runtime
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| 12 | from core import error
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| 13 | from core import test_lib
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| 14 | from core import state # module under test
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| 15 | from frontend import lexer
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| 16 | from frontend import location
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| 17 | from mycpp.mylib import NewDict
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| 18 |
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| 19 |
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| 20 | def _InitMem():
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| 21 | # empty environment, no arena.
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| 22 | arena = test_lib.MakeArena('<state_test.py>')
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| 23 | col = 0
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| 24 | length = 1
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| 25 | line_id = arena.AddLine(1, 'foo')
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| 26 | arena.NewToken(-1, col, length, line_id)
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| 27 | mem = state.Mem('', [], arena, [])
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| 28 |
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| 29 | parse_opts, exec_opts, mutable_opts = state.MakeOpts(mem, None)
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| 30 |
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| 31 | mem.exec_opts = exec_opts
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| 32 | return mem
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| 33 |
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| 34 |
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| 35 | class MemTest(unittest.TestCase):
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| 36 |
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| 37 | def _PushShellCall(self, mem, name, tok, argv):
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| 38 | """ simulate shell function """
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| 39 | mem.argv_stack.append(state._ArgFrame(argv))
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| 40 | frame = NewDict()
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| 41 | mem.var_stack.append(frame)
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| 42 | mem.PushCall(name, tok)
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| 43 |
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| 44 | def _PopShellCall(self, mem):
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| 45 | """ simulate shell function """
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| 46 | mem.PopCall()
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| 47 | mem.var_stack.pop()
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| 48 | mem.argv_stack.pop()
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| 49 |
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| 50 | def testGet(self):
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| 51 | mem = _InitMem()
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| 52 |
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| 53 | tok_a = lexer.DummyToken(Id.Lit_Chars, 'a')
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| 54 | tok_a.line = SourceLine(1, 'a b', source.Interactive)
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| 55 |
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| 56 | self._PushShellCall(mem, 'my-func', tok_a, ['a', 'b'])
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| 57 | print(mem.GetValue('HOME'))
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| 58 | self._PopShellCall(mem)
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| 59 | print(mem.GetValue('NONEXISTENT'))
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| 60 |
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| 61 | def testSearchPath(self):
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| 62 | mem = _InitMem()
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| 63 | #print(mem)
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| 64 | search_path = state.SearchPath(mem)
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| 65 |
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| 66 | # Relative path works without $PATH
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| 67 | self.assertEqual(None, search_path.LookupOne('__nonexistent__'))
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| 68 | self.assertEqual('bin/osh', search_path.LookupOne('bin/osh'))
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| 69 | self.assertEqual(None, search_path.LookupOne('grep'))
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| 70 |
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| 71 | # Set $PATH
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| 72 | mem.SetValue(location.LName('PATH'), value.Str('/bin:/usr/bin'),
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| 73 | scope_e.GlobalOnly)
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| 74 |
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| 75 | self.assertEqual(None, search_path.LookupOne('__nonexistent__'))
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| 76 | self.assertEqual('bin/osh', search_path.LookupOne('bin/osh'))
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| 77 |
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| 78 | # Not hermetic, but should be true on POSIX systems.
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| 79 | # Also see https://www.freedesktop.org/wiki/Software/systemd/TheCaseForTheUsrMerge/
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| 80 | # - on some systems, /bin is a symlink to /usr/bin
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| 81 | if os.path.isfile('/bin/env'):
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| 82 | self.assertEqual(search_path.LookupOne('env'), '/bin/env')
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| 83 | else:
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| 84 | self.assertEqual(search_path.LookupOne('env'), '/usr/bin/env')
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| 85 |
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| 86 | def testPushTemp(self):
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| 87 | mem = _InitMem()
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| 88 |
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| 89 | # x=1
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| 90 | mem.SetValue(location.LName('x'), value.Str('1'), scope_e.Dynamic)
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| 91 | self.assertEqual('1', mem.var_stack[-1]['x'].val.s)
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| 92 |
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| 93 | mem.PushTemp()
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| 94 |
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| 95 | self.assertEqual(2, len(mem.var_stack))
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| 96 |
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| 97 | # x=temp E=3 read x <<< 'line'
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| 98 | mem.SetValue(location.LName('x'), value.Str('temp'), scope_e.LocalOnly)
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| 99 | mem.SetValue(location.LName('E'), value.Str('3'), scope_e.LocalOnly)
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| 100 | mem.SetValue(location.LName('x'), value.Str('line'), scope_e.LocalOnly)
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| 101 |
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| 102 | self.assertEqual('3', mem.var_stack[-1]['E'].val.s)
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| 103 | self.assertEqual('line', mem.var_stack[-1]['x'].val.s)
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| 104 | self.assertEqual('1', mem.var_stack[-2]['x'].val.s)
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| 105 |
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| 106 | mem.PopTemp()
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| 107 | self.assertEqual(1, len(mem.var_stack))
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| 108 | self.assertEqual('1', mem.var_stack[-1]['x'].val.s)
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| 109 |
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| 110 | def testSetVarClearFlag(self):
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| 111 | mem = _InitMem()
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| 112 | print(mem)
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| 113 |
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| 114 | tok_one = lexer.DummyToken(Id.Lit_Chars, 'ONE')
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| 115 | tok_one.line = SourceLine(1, 'ONE', source.Interactive)
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| 116 |
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| 117 | tok_two = lexer.DummyToken(Id.Lit_Chars, 'TWO')
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| 118 | tok_two.line = SourceLine(1, 'TWO', source.Interactive)
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| 119 |
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| 120 | self._PushShellCall(mem, 'my-func', tok_one, ['ONE'])
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| 121 | self.assertEqual(2, len(mem.var_stack)) # internal details
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| 122 |
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| 123 | # local x=y
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| 124 | mem.SetValue(location.LName('x'), value.Str('y'), scope_e.LocalOnly)
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| 125 | self.assertEqual('y', mem.var_stack[-1]['x'].val.s)
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| 126 |
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| 127 | # New frame
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| 128 | self._PushShellCall(mem, 'my-func', tok_two, ['TWO'])
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| 129 | self.assertEqual(3, len(mem.var_stack)) # internal details
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| 130 |
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| 131 | # x=y -- test out dynamic scope
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| 132 | mem.SetValue(location.LName('x'), value.Str('YYY'), scope_e.Dynamic)
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| 133 | self.assertEqual('YYY', mem.var_stack[-2]['x'].val.s)
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| 134 | self.assertEqual(None, mem.var_stack[-1].get('x'))
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| 135 |
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| 136 | # myglobal=g
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| 137 | mem.SetValue(location.LName('myglobal'), value.Str('g'),
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| 138 | scope_e.Dynamic)
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| 139 | self.assertEqual('g', mem.var_stack[0]['myglobal'].val.s)
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| 140 | self.assertEqual(False, mem.var_stack[0]['myglobal'].exported)
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| 141 |
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| 142 | # 'export PYTHONPATH=/'
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| 143 | mem.SetValue(location.LName('PYTHONPATH'),
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| 144 | value.Str('/'),
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| 145 | scope_e.Dynamic,
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| 146 | flags=state.SetExport)
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| 147 | self.assertEqual('/', mem.var_stack[0]['PYTHONPATH'].val.s)
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| 148 | self.assertEqual(True, mem.var_stack[0]['PYTHONPATH'].exported)
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| 149 |
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| 150 | cmd_ev = mem.GetExported()
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| 151 | self.assertEqual('/', cmd_ev['PYTHONPATH'])
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| 152 |
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| 153 | mem.SetValue(location.LName('PYTHONPATH'),
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| 154 | None,
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| 155 | scope_e.Dynamic,
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| 156 | flags=state.SetExport)
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| 157 | self.assertEqual(True, mem.var_stack[0]['PYTHONPATH'].exported)
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| 158 |
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| 159 | # 'export myglobal'. None means don't touch it. Undef would be confusing
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| 160 | # because it might mean "unset", but we have a separated API for that.
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| 161 | mem.SetValue(location.LName('myglobal'),
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| 162 | None,
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| 163 | scope_e.Dynamic,
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| 164 | flags=state.SetExport)
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| 165 | self.assertEqual(True, mem.var_stack[0]['myglobal'].exported)
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| 166 |
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| 167 | # export g2 -- define and export empty
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| 168 | mem.SetValue(location.LName('g2'),
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| 169 | None,
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| 170 | scope_e.Dynamic,
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| 171 | flags=state.SetExport)
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| 172 | self.assertEqual(value_e.Undef, mem.var_stack[0]['g2'].val.tag())
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| 173 | self.assertEqual(True, mem.var_stack[0]['g2'].exported)
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| 174 |
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| 175 | # readonly myglobal
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| 176 | self.assertEqual(False, mem.var_stack[0]['myglobal'].readonly)
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| 177 | mem.SetValue(location.LName('myglobal'),
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| 178 | None,
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| 179 | scope_e.Dynamic,
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| 180 | flags=state.SetReadOnly)
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| 181 | self.assertEqual(True, mem.var_stack[0]['myglobal'].readonly)
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| 182 |
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| 183 | mem.SetValue(location.LName('PYTHONPATH'), value.Str('/lib'),
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| 184 | scope_e.Dynamic)
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| 185 | self.assertEqual('/lib', mem.var_stack[0]['PYTHONPATH'].val.s)
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| 186 | self.assertEqual(True, mem.var_stack[0]['PYTHONPATH'].exported)
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| 187 |
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| 188 | # COMPREPLY=(1 2 3)
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| 189 | # invariant to enforce: arrays can't be exported
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| 190 | mem.SetValue(location.LName('COMPREPLY'),
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| 191 | value.BashArray(['1', '2', '3']), scope_e.GlobalOnly)
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| 192 | self.assertEqual(['1', '2', '3'],
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| 193 | mem.var_stack[0]['COMPREPLY'].val.strs)
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| 194 |
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| 195 | # export COMPREPLY - allowed when strict_array not set
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| 196 | mem.SetValue(location.LName('COMPREPLY'),
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| 197 | None,
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| 198 | scope_e.Dynamic,
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| 199 | flags=state.SetExport)
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| 200 |
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| 201 | # readonly r=1
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| 202 | mem.SetValue(location.LName('r'),
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| 203 | value.Str('1'),
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| 204 | scope_e.Dynamic,
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| 205 | flags=state.SetReadOnly)
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| 206 | self.assertEqual('1', mem.var_stack[0]['r'].val.s)
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| 207 | self.assertEqual(False, mem.var_stack[0]['r'].exported)
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| 208 | self.assertEqual(True, mem.var_stack[0]['r'].readonly)
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| 209 | print(mem)
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| 210 |
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| 211 | # r=newvalue
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| 212 | try:
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| 213 | mem.SetValue(location.LName('r'), value.Str('newvalue'),
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| 214 | scope_e.Dynamic)
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| 215 | except error.FatalRuntime as e:
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| 216 | pass
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| 217 | else:
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| 218 | self.fail("Expected failure")
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| 219 |
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| 220 | # readonly r2 -- define empty readonly
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| 221 | mem.SetValue(location.LName('r2'),
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| 222 | None,
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| 223 | scope_e.Dynamic,
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| 224 | flags=state.SetReadOnly)
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| 225 | self.assertEqual(value_e.Undef, mem.var_stack[0]['r2'].val.tag())
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| 226 | self.assertEqual(True, mem.var_stack[0]['r2'].readonly)
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| 227 |
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| 228 | # export -n PYTHONPATH
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| 229 | # Remove the exported property. NOTE: scope is LocalOnly for YSH?
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| 230 | self.assertEqual(True, mem.var_stack[0]['PYTHONPATH'].exported)
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| 231 | mem.ClearFlag('PYTHONPATH', state.ClearExport)
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| 232 | self.assertEqual(False, mem.var_stack[0]['PYTHONPATH'].exported)
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| 233 |
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| 234 | lhs = sh_lvalue.Indexed('a', 1, runtime.NO_SPID)
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| 235 | # a[1]=2
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| 236 | mem.SetValue(lhs, value.Str('2'), scope_e.Dynamic)
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| 237 | self.assertEqual([None, '2'], mem.var_stack[0]['a'].val.strs)
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| 238 |
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| 239 | # a[1]=3
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| 240 | mem.SetValue(lhs, value.Str('3'), scope_e.Dynamic)
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| 241 | self.assertEqual([None, '3'], mem.var_stack[0]['a'].val.strs)
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| 242 |
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| 243 | # a[1]=(x y z) # illegal but doesn't parse anyway
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| 244 | if 0:
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| 245 | try:
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| 246 | mem.SetValue(lhs, value.BashArray(['x', 'y', 'z']),
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| 247 | scope_e.Dynamic)
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| 248 | except error.FatalRuntime as e:
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| 249 | pass
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| 250 | else:
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| 251 | self.fail("Expected failure")
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| 252 |
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| 253 | # readonly a
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| 254 | mem.SetValue(location.LName('a'),
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| 255 | None,
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| 256 | scope_e.Dynamic,
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| 257 | flags=state.SetReadOnly)
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| 258 | self.assertEqual(True, mem.var_stack[0]['a'].readonly)
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| 259 |
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| 260 | try:
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| 261 | # a[1]=3
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| 262 | mem.SetValue(lhs, value.Str('3'), scope_e.Dynamic)
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| 263 | except error.FatalRuntime as e:
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| 264 | pass
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| 265 | else:
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| 266 | self.fail("Expected failure")
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| 267 |
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| 268 | def testGetValue(self):
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| 269 | mem = _InitMem()
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| 270 |
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| 271 | # readonly a=x
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| 272 | mem.SetValue(location.LName('a'),
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| 273 | value.Str('x'),
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| 274 | scope_e.Dynamic,
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| 275 | flags=state.SetReadOnly)
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| 276 |
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| 277 | val = mem.GetValue('a', scope_e.Dynamic)
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| 278 | test_lib.AssertAsdlEqual(self, value.Str('x'), val)
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| 279 |
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| 280 | val = mem.GetValue('undef', scope_e.Dynamic)
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| 281 | test_lib.AssertAsdlEqual(self, value.Undef, val)
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| 282 |
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| 283 | def testExportThenAssign(self):
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| 284 | """Regression Test."""
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| 285 | mem = _InitMem()
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| 286 |
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| 287 | # export U
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| 288 | mem.SetValue(location.LName('U'),
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| 289 | None,
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| 290 | scope_e.Dynamic,
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| 291 | flags=state.SetExport)
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| 292 | print(mem)
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| 293 |
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| 294 | # U=u
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| 295 | mem.SetValue(location.LName('U'), value.Str('u'), scope_e.Dynamic)
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| 296 | print(mem)
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| 297 | e = mem.GetExported()
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| 298 | self.assertEqual('u', e['U'])
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| 299 |
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| 300 | def testUnset(self):
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| 301 | mem = _InitMem()
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| 302 | # unset a
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| 303 | mem.Unset(location.LName('a'), scope_e.Shopt)
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| 304 |
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| 305 | return # not implemented yet
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| 306 |
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| 307 | # unset a[1]
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| 308 | mem.Unset(sh_lvalue.Indexed('a', 1, runtime.NO_SPID), False)
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| 309 |
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| 310 | def testArgv(self):
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| 311 | mem = _InitMem()
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| 312 | src = source.Interactive
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| 313 |
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| 314 | tok_a = lexer.DummyToken(Id.Lit_Chars, 'a')
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| 315 | tok_a.line = SourceLine(1, 'a b', src)
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| 316 |
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| 317 | self._PushShellCall(mem, 'my-func', tok_a, ['a', 'b'])
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| 318 | self.assertEqual(['a', 'b'], mem.GetArgv())
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| 319 |
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| 320 | tok_x = lexer.DummyToken(Id.Lit_Chars, 'x')
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| 321 | tok_x.line = SourceLine(2, 'x y', src)
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| 322 |
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| 323 | self._PushShellCall(mem, 'my-func', tok_x, ['x', 'y'])
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| 324 | self.assertEqual(['x', 'y'], mem.GetArgv())
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| 325 |
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| 326 | status = mem.Shift(1)
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| 327 | self.assertEqual(['y'], mem.GetArgv())
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| 328 | self.assertEqual(0, status)
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| 329 |
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| 330 | status = mem.Shift(1)
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| 331 | self.assertEqual([], mem.GetArgv())
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| 332 | self.assertEqual(0, status)
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| 333 |
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| 334 | status = mem.Shift(1)
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| 335 | self.assertEqual([], mem.GetArgv())
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| 336 | self.assertEqual(1, status) # error
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| 337 |
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| 338 | self._PopShellCall(mem)
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| 339 | self.assertEqual(['a', 'b'], mem.GetArgv())
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| 340 |
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| 341 | def testArgv2(self):
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| 342 | mem = state.Mem('', ['x', 'y'], None, [])
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| 343 |
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| 344 | mem.Shift(1)
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| 345 | self.assertEqual(['y'], mem.GetArgv())
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| 346 |
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| 347 | mem.SetArgv(['i', 'j', 'k'])
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| 348 | self.assertEqual(['i', 'j', 'k'], mem.GetArgv())
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| 349 |
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| 350 |
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| 351 | if __name__ == '__main__':
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| 352 | unittest.main()
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