(command.CommandList
  children: [
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:test_description)
          op: assign_op.Equal
          rhs: {(SQ <'merge can handle submodules'>)}
          spids: [4]
        )
      ]
    )
    (C {<.>} {<'./test-lib.sh'>})
    (C {<.>} {(DQ ($ Id.VSub_DollarName '$TEST_DIRECTORY')) <'/lib-submodule-update.sh'>})
    (C {<test_submodule_switch>} {(DQ <'git merge'>)})
    (C {<test_submodule_switch>} {(DQ <'git merge --ff'>)})
    (C {<test_submodule_switch>} {(DQ <'git merge --ff-only'>)})
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:KNOWN_FAILURE_NOFF_MERGE_DOESNT_CREATE_EMPTY_SUBMODULE_DIR)
          op: assign_op.Equal
          rhs: {<1>}
          spids: [46]
        )
      ]
    )
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: 
            (sh_lhs_expr.Name
              name: KNOWN_FAILURE_NOFF_MERGE_ATTEMPTS_TO_MERGE_REMOVED_SUBMODULE_FILES
            )
          op: assign_op.Equal
          rhs: {<1>}
          spids: [49]
        )
      ]
    )
    (C {<test_submodule_switch>} {(DQ <'git merge --no-ff'>)})
    (C {<test_done>})
  ]
)