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Ran 1 test in 0.011s

OK
('\n---', 'foo')
{(foo)}
('\n---', "'hi'")
{(SQ <hi>)}
('\n---', '$var')
{($ VSub_DollarName '$var')}
('\n---', '${var}')
{(${ VSub_Name var)}
('\n---', ' "$var" ')
{(DQ ($ VSub_DollarName '$var'))}
('\n---', ' "${var}" ')
{(DQ (${ VSub_Name var))}
('\n---', ' $((1+2)) ')
{
  (word_part.ArithSubPart
    anode: 
      (arith_expr.ArithBinary
        op_id: Arith_Plus
        left: (arith_expr.ArithWord w:{(Lit_Digits 1)})
        right: (arith_expr.ArithWord w:{(Lit_Digits 2)})
      )
    spids: [1 6]
  )
}
('\n---', ' $(echo hi) ')
{
  (word_part.CommandSubPart
    command_list: (command.CommandList children:[(C {(echo)} {(hi)})])
    left_token: <Left_CommandSub '$('>
    spids: [1 5]
  )
}
('\n---', ' "$((1+2))" ')
{
  (DQ 
    (word_part.ArithSubPart
      anode: 
        (arith_expr.ArithBinary
          op_id: Arith_Plus
          left: (arith_expr.ArithWord w:{(Lit_Digits 1)})
          right: (arith_expr.ArithWord w:{(Lit_Digits 2)})
        )
      spids: [2 7]
    )
  )
}
('\n---', ' "$(echo hi)" ')
{
  (DQ 
    (word_part.CommandSubPart
      command_list: (command.CommandList children:[(C {(echo)} {(hi)})])
      left_token: <Left_CommandSub '$('>
      spids: [2 6]
    )
  )
}
('\n---', ' $src/file ')
{($ VSub_DollarName '$src') (/file)}
('\n---', ' ${src}/file ')
{(${ VSub_Name src) (/file)}
('\n---', ' "$src/file" ')
{(DQ ($ VSub_DollarName '$src') (/file))}
('\n---', ' "${src}/file" ')
{(DQ (${ VSub_Name src) (/file))}
('\n---', ' $((1+2))$(echo hi) ')
{
  (word_part.ArithSubPart
    anode: 
      (arith_expr.ArithBinary
        op_id: Arith_Plus
        left: (arith_expr.ArithWord w:{(Lit_Digits 1)})
        right: (arith_expr.ArithWord w:{(Lit_Digits 2)})
      )
    spids: [1 6]
  ) 
  (word_part.CommandSubPart
    command_list: (command.CommandList children:[(C {(echo)} {(hi)})])
    left_token: <Left_CommandSub '$('>
    spids: [7 11]
  )
}
('\n---', ' ~/src ')
{(Lit_TildeLike '~') (/src)}
('\n---', ' ~bob/foo ')
{(Lit_TildeLike '~bob') (/foo)}
('\n---', 'notleading~')
{(notleading) (Lit_TildeLike '~')}
('\n---', ' "~/src" ')
{(DQ ('~/src'))}
('\n---', ' "~bob/foo" ')
{(DQ ('~bob/foo'))}