(CommandList
  children: [
    (AndOr
      ops: [Op_DAmp]
      children: [
        (C {(Lit_Other '[')} {(-z)} {(DQ ($ VSub_Name '$TEST_SRCDIR'))} {(Lit_Other ']')})
        (BraceGroup
          children: [
            (Sentence
              child: 
                (SimpleCommand
                  words: [{(echo)} {(DQ ('TEST_SRCDIR not set!'))}]
                  redirects: [(Redir op_id:Redir_GreatAnd fd:16777215 arg_word:{(2)} spids:[72])]
                )
              terminator: <Op_Semi ';'>
            )
            (Sentence
              child: (ControlFlow token:<ControlFlow_Exit exit> arg_word:{(1)})
              terminator: <Op_Semi ';'>
            )
          ]
          spids: [64]
        )
      ]
    )
    (AndOr
      ops: [Op_DPipe]
      children: [
        (C {(source)} {(DQ (${ VSub_Name TEST_SRCDIR) (/io_bazel/src/test/shell/unittest.bash))})
        (BraceGroup
          children: [
            (Sentence
              child: 
                (SimpleCommand
                  words: [{(echo)} {(DQ ('Failed to source unittest.bash'))}]
                  redirects: [(Redir op_id:Redir_GreatAnd fd:16777215 arg_word:{(2)} spids:[108])]
                )
              terminator: <Op_Semi ';'>
            )
            (Sentence
              child: (ControlFlow token:<ControlFlow_Exit exit> arg_word:{(1)})
              terminator: <Op_Semi ';'>
            )
          ]
          spids: [100]
        )
      ]
    )
    (FuncDef
      name: set_up
      body: 
        (BraceGroup
          children: [
            (C {(mkdir)} {(-p)} {($ VSub_Name '$TEST_TMPDIR') (/workspace)})
            (C {(cd)} {($ VSub_Name '$TEST_TMPDIR') (/workspace)})
            (C {(touch)} {($ VSub_Name '$TEST_TMPDIR') (/workspace/WORKSPACE)})
          ]
          spids: [124]
        )
      spids: [120 123]
    )
    (FuncDef
      name: tear_down
      body: 
        (BraceGroup
          children: [(C {(rm)} {(-fr)} {($ VSub_Name '$TEST_TMPDIR') (/workspace/) (Lit_Other '*')})]
          spids: [153]
        )
      spids: [149 152]
    )
  ]
)