Testable Requirements

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0><tr> <td valign="top" rowspan="3" width=170 BGCOLOR="#000099" TEXT="#F7F7FF" background="02ebbc00erkqpg.jpg"> <div> Return to <A HREF="req_conc.htm" TARGET="_top" TITLE="Requirements Concepts">Requirements Concepts</A></div> <div> ----------------------------------</div> <div> <A HREF="req_hier.htm" TARGET="_top" TITLE="Requirements Hierarchy">Requirements Hierarchy</A></div> <div> <B>Testable Requirements</B></div> </td> <td valign="top" colspan=2 height=60 BGCOLOR="#FFFFFF" TEXT="#080000"> <div> <B>Testable Requirements</B></div> <bR> <bR> <div> </div> </td> </tr><tr> <td valign="top" height=396 width="100%" colspan=2 BGCOLOR="#FFFFFF" TEXT="#080000"> <div> A testable requirement is a requirement that has been broken down to a level where it is precise, unambiguous, and not divisible into lower level requirements.  These criteria are only met if it is possible to write a test case that would validate whether the requirement has or has not been implemented correctly.  This is the source of the term "testable requirement".  For most requirements, a testable requirement could be described in terms of:</div> <bR> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.png" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">The state of the system and the data elements that are inputs (e.g., customer number, product number)</div> <bR> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.png" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">The condition or action associated with the requirement (e.g., the user enters data, the order is validated, the check amount is deducted)</div> <bR> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.png" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">The expected or specified result described in terms of data elements (e.g., customer number must be 8 digit numeric, product quantity must be greater than zero).</div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <IMG SRC="0cf84930.png" border=0 width="388" height="147" ALT="Visio 2000 Drawing" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <div> Figure 3</div> </td> </tr><tr> <td valign="top" colspan=2 height=24 BGCOLOR="#FFFFFF" TEXT="#080000"> <div> <A HREF="req_hier.htm" TARGET="_top" TITLE="Requirements Hierarchy"><B><IMG SRC="02711110.png" border=0 width="17" height="17" ALT="prev" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></A><B> </B><IMG BORDER="0" SRC="1x1.gif" HEIGHT="17" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" WIDTH="17"><B>     </B><A HREF="req_conc.htm" TARGET="_top" TITLE="Requirements Concepts"><B><IMG SRC="02611110.png" border=0 width="17" height="17" ALT="up" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></A><B> </B><IMG BORDER="0" SRC="1x1.gif" HEIGHT="17" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" WIDTH="17"><B>                         </B><A HREF="http://www.mosaicinc.com" TARGET="_top" TITLE="http://www.mosaicinc.com"><B>Mosaic Home</B></A></div> <div> <A HREF="req_hier.htm" TARGET="_top" TITLE="Requirements Hierarchy"><B><IMG SRC="02711110.png" border=0 width="17" height="17" ALT="prev" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></A><B> </B><IMG BORDER="0" SRC="1x1.gif" HEIGHT="17" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" WIDTH="17"><B>     </B><A HREF="req_conc.htm" TARGET="_top" TITLE="Requirements Concepts"><B><IMG SRC="02611110.png" border=0 width="17" height="17" ALT="up" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></A><B> </B><IMG BORDER="0" SRC="1x1.gif" HEIGHT="17" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" WIDTH="17"></div> <bR> </td> </tr></table></body>