It "parses null for empty command"
  Data
    #|
  End

  When call ./minishell
  The output should eq ""
End

It "a single command is parsed"
  Data
    #|echo hello
  End

  When call ./minishell
  The output should eq \
" ╰─ t_cmdgroup
     ├─ t_cmdlist
     │   ├─ num_cmds = 1
     │   ╰─ cmd[0]
     ╰─ t_redir_list"
End