%%
%% This is file `atbegshi-test2.tex',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% atbegshi.dtx  (with options: `test2')
%% 
%% This is a generated file.
%% 
%% Copyright (C) 2007-2010 by
%%    Heiko Oberdiek <heiko.oberdiek at googlemail.com>
%% 
%% This work may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either
%% version 1.3c of this license or (at your option) any later
%% version. This version of this license is in
%%    http://www.latex-project.org/lppl/lppl-1-3c.txt
%% and the latest version of this license is in
%%    http://www.latex-project.org/lppl.txt
%% and version 1.3 or later is part of all distributions of
%% LaTeX version 2005/12/01 or later.
%% 
%% This work has the LPPL maintenance status "maintained".
%% 
%% This Current Maintainer of this work is Heiko Oberdiek.
%% 
%% The Base Interpreter refers to any `TeX-Format',
%% because some files are installed in TDS:tex/generic//.
%% 
%% This work consists of the main source file atbegshi.dtx
%% and the derived files
%%    atbegshi.sty, atbegshi.pdf, atbegshi.ins, atbegshi.drv,
%%    atbegshi-example1.tex, atbegshi-example2.tex,
%%    atbegshi-test1.tex, atbegshi-test2.tex, atbegshi-test3.tex.
%% 
\input atbegshi.sty\relax
\def\msg#{\immediate\write16}
\msg{File: atbegshi-test2.tex 2010/03/01 v1.11 Test file for plain-TeX}
\def\testmsg#1#2{%
  \msg{}%
  \msg{*** Test with box (#1), expected page output [#2]}% hash-ok
}

\newbox\voidbox
\def\void{\box\voidbox}
\begingroup
  \setbox\voidbox=\void
\endgroup

\count0=0\relax
\AtBeginShipout{%
  \global\advance\count0 by 1\relax
  \msg{* Inside \string\AtBeginShipout: [\the\count0]}%
}

\AtBeginShipoutFirst{%
  \msg{* Inside \string\AtBeginShipoutFirst}%
  Hello World%
}

\testmsg{\string\null}{1}
\shipout\null

\AtBeginShipoutFirst{%
  This is too late%
}

\testmsg{void}{}
\shipout\void

\testmsg{\string\copy255 (not void)}{2}
\setbox255\hbox{\vrule height 10bp width 10bp}
\shipout\copy255 %

\testmsg{\string\copy255 (again)}{3}
\shipout\copy255 %

\testmsg{\string\box255}{4}
\shipout\box255 %

\testmsg{\string\box255 (again)}{}
\shipout\box255 %

\testmsg{\string\hbox}{5}
\shipout\hbox{\vrule height 5bp width 20bp}

\testmsg{\string\vbox}{6}
\shipout\vbox{\hrule height 20bp width 5bp}

\testmsg{\string\null, voided by hook}{}
\def\VoidBox{%
  \begingroup
    \setbox\AtBeginShipoutBox=\box\AtBeginShipoutBox
  \endgroup
}
\AtBeginShipout{\VoidBox}
\shipout\null
\def\VoidBox{}

\msg{*** \string\begingroup}
\begingroup
  \testmsg{void}{}%
  \shipout\void
\msg{*** \string\endgroup}
\endgroup

\msg{*** \string\begingroup}
\begingroup
  \testmsg{void}{}%
  \shipout\void
  \testmsg{\string\null}{8}%
  \shipout\null
\msg{*** \string\endgroup}
\endgroup

\testmsg{output routine}{9}
Hello World
\vfill
\eject

\testmsg{\string\null\space(discarded)}{}
\AtBeginShipout{%
  \msg{* Inside \string\AtBeginShipout: DISCARD}%
  \AtBeginShipoutDiscard
}
\shipout\null

\end
\endinput
%%
%% End of file `atbegshi-test2.tex'.
