(List
  (AndOr OP_AND_IF
    (Com {[LIT_OTHER "["]} {[LIT_CHARS -z]} {[DQ [VarSub TEST_SRCDIR]]} {[LIT_OTHER "]"]})
    (List
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "TEST_SRCDIR not set!"]]}
        <
        (DescriptorRedirectNode target={[LIT_CHARS 2]} <REDIR_GREATAND ">&"> 1),
        >
      )
      (Com {[LIT_CHARS exit]} {[LIT_CHARS 1]})
    )
  )
  (AndOr OP_OR_IF
    (Com {[LIT_CHARS source]} {[DQ [VarSub TEST_SRCDIR][LIT_CHARS /io_bazel/src/test/shell/unittest.bash]]})
    (List
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "Failed to source unittest.bash"]]}
        <
        (DescriptorRedirectNode target={[LIT_CHARS 2]} <REDIR_GREATAND ">&"> 1),
        >
      )
      (Com {[LIT_CHARS exit]} {[LIT_CHARS 1]})
    )
  )
  (= scope=<EAssignScope.GLOBAL 1> flags=2 words=[] bindings=[('TEST_DATA_DIR', {[DQ [VarSub TEST_SRCDIR][LIT_CHARS /io_bazel/tools/build_defs/docker/testdata]]})])
)