<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
<HTML
><HEAD
><TITLE
>Abstract</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
"><LINK
REL="HOME"
TITLE="DejaGnu"
HREF="book1.html"><LINK
REL="PREVIOUS"
TITLE="DejaGnu"
HREF="book1.html"><LINK
REL="NEXT"
TITLE="Overview"
HREF="c50.html"></HEAD
><BODY
CLASS="PREFACE"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>DejaGnu: The GNU Testing Framework</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="book1.html"
ACCESSKEY="P"
>&#60;&#60;&#60; Previous</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="c50.html"
ACCESSKEY="N"
>Next &#62;&#62;&#62;</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="PREFACE"
><H1
><A
NAME="PREFACE"
></A
>Abstract</H1
><P
>This document describes the functionality of DejaGnu, the
    testing framework of the GNU project. DejaGnu is written in
    <SPAN
CLASS="PRODUCTNAME"
>Expect</SPAN
>, which uses
    <SPAN
CLASS="PRODUCTNAME"
>Tcl</SPAN
> as a command
    language. <SPAN
CLASS="PRODUCTNAME"
>Expect</SPAN
> acts as a very
    programmable shell.  As with other Unix command shells, you can
    run any program, but once the program is started, your test script
    has programmable control over its input and output.  This does not
    just apply to the programs under test; <B
CLASS="COMMAND"
>expect</B
>
    can also run any auxiliary program, such as
    <B
CLASS="COMMAND"
>diff</B
> or <B
CLASS="COMMAND"
>sh</B
>, with full
    control over its input and output.</P
><P
>DejaGnu itself is merely a framework for the creation of
    testsuites. Testsuites are distributed with each
    application.</P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="book1.html"
ACCESSKEY="P"
>&#60;&#60;&#60; Previous</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="book1.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="c50.html"
ACCESSKEY="N"
>Next &#62;&#62;&#62;</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>DejaGnu</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
>&nbsp;</TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Overview</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>