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};

<font color=#0000ff>inline</font> Test::Test(ostream* osptr) {
  <font color=#0000ff>this</font>-&gt;osptr = osptr;
  assert(osptr);
  nPass = nFail = 0;
}

<font color=#0000ff>inline</font> <font color=#0000ff>long</font> Test::getNumPassed() <font color=#0000ff>const</font> {
  <font color=#0000ff>return</font> nPass;
}

<font color=#0000ff>inline</font> <font color=#0000ff>long</font> Test::getNumFailed() <font color=#0000ff>const</font> {
  <font color=#0000ff>return</font> nFail;
}

<font color=#0000ff>inline</font> <font color=#0000ff>const</font> ostream* Test::getStream() <font color=#0000ff>const</font> {
  <font color=#0000ff>return</font> osptr;
}

<font color=#0000ff>inline</font> <font color=#0000ff>void</font> Test::setStream(ostream* osptr) {
  <font color=#0000ff>this</font>-&gt;osptr = osptr;
}

<font color=#0000ff>inline</font> <font color=#0000ff>void</font> Test::succeed_() {
  ++nPass;
}

<font color=#0000ff>inline</font> <font color=#0000ff>void</font> Test::reset() {
  nPass = nFail = 0;
}
#endif <font color=#009900>// TEST_H ///:~</font></PRE></FONT></BLOCKQUOTE>
<DIV ALIGN="LEFT"><P><FONT FACE="Georgia">Explanation of code here</FONT><BR></P></DIV>
<DIV ALIGN="LEFT"><P><FONT FACE="Georgia">Here is the implmentation of
<B>Test</B>:</FONT><BR></P></DIV>

<BLOCKQUOTE><FONT SIZE = "+1"><PRE><font color=#009900>//: TestSuite:Test.cpp {O}</font>
#include <font color=#004488>"Test.h"</font>
#include &lt;iostream&gt;
#include &lt;typeinfo&gt; <font color=#009900>// Visual C++ requires /GR""</font>
<font color=#0000ff>using</font> <font color=#0000ff>namespace</font> std;

<font color=#0000ff>void</font> Test::do_test(<font color=#0000ff>bool</font> cond, 
                   <font color=#0000ff>const</font> std::string&amp; lbl,
                   <font color=#0000ff>const</font> <font color=#0000ff>char</font>* fname, 
                   <font color=#0000ff>long</font> lineno){
  <font color=#0000ff>if</font> (!cond)
    do_fail(lbl, fname, lineno);
  <font color=#0000ff>else</font>
    succeed_();
}

<font color=#0000ff>void</font> Test::do_fail(<font color=#0000ff>const</font> std::string&amp; lbl,
                   <font color=#0000ff>const</font> <font color=#0000ff>char</font>* fname, 
                   <font color=#0000ff>long</font> lineno){
  ++nFail;
  <font color=#0000ff>if</font> (osptr){
    *osptr &lt;&lt; <font color=#0000ff>typeid</font>(*<font color=#0000ff>this</font>).name()
             &lt;&lt; <font color=#004488>"failure: ("</font> &lt;&lt; lbl &lt;&lt; <font color=#004488>") , "</font>
             &lt;&lt; fname
             &lt;&lt; <font color=#004488>" (line "</font> &lt;&lt; lineno &lt;&lt; <font color=#004488>")\n"</font>;
  }
}

<font color=#0000ff>long</font> Test::report() <font color=#0000ff>const</font> {
  <font color=#0000ff>if</font> (osptr){
    *osptr &lt;&lt; <font color=#004488>"Test \"</font>" &lt;&lt; <font color=#0000ff>typeid</font>(*<font color=#0000ff>this</font>).name()
             &lt;&lt; <font color=#004488>"\"</font>:\n\tPassed: " &lt;&lt; nPass
             &lt;&lt; <font color=#004488>"\tFailed: "</font> &lt;&lt; nFail
             &lt;&lt; endl;
  }
  <font color=#0000ff>return</font> nFail;
} <font color=#009900>///:~</font></PRE></FONT></BLOCKQUOTE>
<DIV ALIGN="LEFT"><P><FONT FACE="Georgia">No rocket science here. <B>Test</B> just
keeps track of the number of successes and failures as well as the stream where
you want <B>Test::report(&#160;)</B> to print the results. <B>test_</B> and
<B>fail_</B> are macros so that they can include filename and line number
information available from the preprocessor.</FONT><BR></P></DIV>
<DIV ALIGN="LEFT"><P><FONT FACE="Georgia">Here is the header file for
<B>Suite</B>:</FONT><BR></P></DIV>

<BLOCKQUOTE><FONT SIZE = "+1"><PRE><font color=#009900>//: TestSuite:Suite.h</font>
#ifndef SUITE_H
#define SUITE_H
#include <font color=#004488>"..</font><font color=#004488>/TestSuite</font><font color=#004488>/Test.h"</font>
#include &lt;vector&gt;
#include &lt;stdexcept&gt;
<font color=#0000ff>using</font> std::vector;
<font color=#0000ff>using</font> std::logic_error;

<font color=#0000ff>class</font> TestSuiteError : <font color=#0000ff>public</font> logic_error {
<font color=#0000ff>public</font>:
  TestSuiteError(<font color=#0000ff>const</font> string&amp; s = <font color=#004488>""</font>)
    : logic_error(s) {}
};

<font color=#0000ff>class</font> Suite {
<font color=#0000ff>public</font>:
  Suite(<font color=#0000ff>const</font> string&amp; name, ostream* osptr = &amp;cout);
  string getName() <font color=#0000ff>const</font>;
  <font color=#0000ff>long</font> getNumPassed() <font color=#0000ff>const</font>;
  <font color=#0000ff>long</font> getNumFailed() <font color=#0000ff>const</font>;
  <font color=#0000ff>const</font> ostream* getStream() <font color=#0000ff>const</font>;
  <font color=#0000ff>void</font> setStream(ostream* osptr);
  <font color=#0000ff>void</font> addTest(Test* t) <font color=#0000ff>throw</font> (TestSuiteError);
  <font color=#0000ff>void</font> addSuite(<font color=#0000ff>const</font> Suite&amp;) 
    <font color=#0000ff>throw</font>(TestSuiteError);
  <font color=#0000ff>void</font> run();  <font color=#009900>// Calls Test::run() repeatedly</font>
  <font color=#0000ff>long</font> report() <font color=#0000ff>const</font>;
  <font color=#0000ff>void</font> free(); <font color=#009900>// Deletes tests</font>
<font color=#0000ff>private</font>:
  string name;
  ostream* osptr;
  vector&lt;Test*&gt; tests;
  <font color=#0000ff>void</font> reset();
  <font color=#009900>// Disallowed ops:</font>
  Suite(<font color=#0000ff>const</font> Suite&amp;);
  Suite&amp; <font color=#0000ff>operator</font>=(<font color=#0000ff>const</font> Suite&amp;);
};

<font color=#0000ff>inline</font>
Suite::Suite(<font color=#0000ff>const</font> string&amp; name, ostream* osptr)
   : name(name) {
  <font color=#0000ff>this</font>-&gt;osptr = osptr;
}

<font color=#0000ff>inline</font> string Suite::getName() <font color=#0000ff>const</font> {
  <font color=#0000ff>return</font> name;
}

<font color=#0000ff>inline</font> <font color=#0000ff>const</font> ostream* Suite::getStream() <font color=#0000ff>const</font> {
  <font color=#0000ff>return</font> osptr;
}

<font color=#0000ff>inline</font> <font color=#0000ff>void</font> Suite::setStream(ostream* osptr) {
  <font color=#0000ff>this</font>-&gt;osptr = osptr;
}
#endif <font color=#009900>// SUITE_H ///:~</font></PRE></FONT></BLOCKQUOTE>
<DIV ALIGN="LEFT"><P><FONT FACE="Georgia">Explanation of code here</FONT><BR></P></DIV>
<DIV ALIGN="LEFT"><P><FONT FACE="Georgia">Here is the implementation of
<B>Suite</B>:</FONT><BR></P></DIV>

<BLOCKQUOTE><FONT SIZE = "+1"><PRE><font color=#009900>//: TestSuite:Suite.cpp {O}</font>
#include <font color=#004488>"Suite.h"</font>
#include &lt;iostream&gt;
#include &lt;cassert&gt;
<font color=#0000ff>using</font> <font color=#0000ff>namespace</font> std;

<font color=#0000ff>void</font> Suite::addTest(Test* t) 
  <font color=#0000ff>throw</font>(TestSuiteError) {
  <font color=#009900>// Make sure test has a stream:</font>
  <font color=#0000ff>if</font> (t == 0)
    <font color=#0000ff>throw</font> TestSuiteError(
      <font color=#004488>"Null test in Suite::addTest"</font>);
  <font color=#0000ff>else</font> <font color=#0000ff>if</font> (osptr != 0 &amp;&amp; t-&gt;getStream() == 0)
    t-&gt;setStream(osptr);
  tests.push_back(t);
  t-&gt;reset();
}

<font color=#0000ff>void</font> Suite::addSuite(<font color=#0000ff>const</font> Suite&amp; s) 
  <font color=#0000ff>throw</font>(TestSuiteError) {
  <font color=#0000ff>for</font> (size_t i = 0; i &lt; s.tests.size(); ++i)
    addTest(s.tests[i]);
}

<font color=#0000ff>void</font> Suite::free() {
  <font color=#009900>// This is not a destructor because tests</font>
  <font color=#009900>// don't have to be on the heap.</font>
  <font color=#0000ff>for</font> (size_t i = 0; i &lt; tests.size(); ++i) {
    <font color=#0000ff>delete</font> tests[i];
    tests[i] = 0;
  }
}

<font color=#0000ff>void</font> Suite::run() {
  reset();
  <font color=#0000ff>for</font> (size_t i = 0; i &lt; tests.size(); ++i) {
    assert(tests[i]);
    tests[i]-&gt;run();
  }
}

<font color=#0000ff>long</font> Suite::report() <font color=#0000ff>const</font> {
  <font color=#0000ff>if</font> (osptr) {
    <font color=#0000ff>long</font> totFail = 0;
    *osptr &lt;&lt; <font color=#004488>"Suite \"</font>" &lt;&lt; name 
             &lt;&lt; <font color=#004488>"\"</font>\n=======";
    size_t i;
    <font color=#0000ff>for</font> (i = 0; i &lt; name.size(); ++i)
      *osptr &lt;&lt; '=';
    *osptr &lt;&lt; <font color=#004488>"=\n"</font>;
    <font color=#0000ff>for</font> (i = 0; i &lt; tests.size(); ++i) {
      assert(tests[i]);
      totFail += tests[i]-&gt;report();
    }
    *osptr &lt;&lt; <font color=#004488>"======="</font>;
    <font color=#0000ff>for</font> (i = 0; i &lt; name.size(); ++i)
      *osptr &lt;&lt; '=';
    *osptr &lt;&lt; <font color=#004488>"=\n"</font>;
    <font color=#0000ff>return</font> totFail;
  }
  <font color=#0000ff>else</font>
    <font color=#0000ff>return</font> getNumFailed();
}

<font color=#0000ff>long</font> Suite::getNumPassed() <font color=#0000ff>const</font> {
  <font color=#0000ff>long</font> totPass = 0;
  <font color=#0000ff>for</font> (size_t i = 0; i &lt; tests.size(); ++i) {
    assert(tests[i]);
    totPass += tests[i]-&gt;getNumPassed();
  }
  <font color=#0000ff>return</font> totPass;
}

<font color=#0000ff>long</font> Suite::getNumFailed() <font color=#0000ff>const</font> {
  <font color=#0000ff>long</font> totFail = 0;
  <font color=#0000ff>for</font> (size_t i = 0; i &lt; tests.size(); ++i) {
    assert(tests[i]);
    totFail += tests[i]-&gt;getNumFailed();
  }
  <font color=#0000ff>return</font> totFail;
}

<font color=#0000ff>void</font> Suite::reset() {
  <font color=#0000ff>for</font> (size_t i = 0; i &lt; tests.size(); ++i) {
    assert(tests[i]);
    tests[i]-&gt;reset();
  }
} <font color=#009900>///:~</font></PRE></FONT></BLOCKQUOTE>
<DIV ALIGN="LEFT"><P><FONT FACE="Georgia">Explanation of code here</FONT><BR></P></DIV>
<A NAME="Heading68"></A><FONT FACE = "Verdana, Tahoma, Arial, Helvetica, Sans"><H2 ALIGN="LEFT">
Exercises</H2></FONT>
<OL>
<LI><FONT FACE="Verdana">	</FONT><FONT FACE="Georgia">Exercise
1</FONT><LI><FONT FACE="Verdana">	</FONT><FONT FACE="Georgia">Exercise
2</FONT><LI><FONT FACE="Verdana">	</FONT><FONT FACE="Georgia">Exercise
3</FONT><LI><FONT FACE="Verdana">	</FONT><FONT FACE="Georgia">Etc.</FONT></OL>
<DIV ALIGN="LEFT"><P><FONT FACE="Georgia"> </FONT><BR></P></DIV>
<HR><DIV ALIGN="LEFT"><P><A NAME="fn5" HREF="#fnB5">[5]</A><FONT FACE="Georgia" SIZE=2>
See Kent Beck's book, <I>eXtreme Programming Explained: Embrace Change</I>
(Addison-Wesley, 2000, ISBN 0-201-61641-6), or visit www.Xprogramming.com for
more information on XP. The XP theme from which this section derives its title
is DoTheSimplestThingThatCouldPossiblyWork.</FONT><BR></P></DIV>
<DIV ALIGN="LEFT"><P><A NAME="fn6" HREF="#fnB6">[6]</A><FONT FACE="Georgia" SIZE=2>
The seminal work on this subject is Martin Fowler's <I>Refactoring: Improving
the Design of Existing Code</I> (Addison-Wesley, 2000, ISBN 0-201-48567-2). See
www.refactoring.com.</FONT><BR></P></DIV>
<DIV ALIGN="LEFT"><P><A NAME="fn7" HREF="#fnB7">[7]</A><FONT FACE="Georgia" SIZE=2>
If you're using Microsoft Visual C++, you need to specify the compile option
/GR. If you don't, you'll get an access violation at run time.</FONT><BR></P></DIV>

<DIV ALIGN="CENTER">
    <FONT FACE="Verdana, Tahoma, Arial, Helvetica, Sans" size = "-1">
     [ <a href="Chap01.htm">Previous Chapter</a> ] 
    
    [ <a href="SimpCont.htm">Short TOC</a> ] 
    [ <a href="Contents.htm">Table of Contents</a> ] 
  
        [ <a href="DocIdx.htm">Index</a> ]
        
     [ <a href="Chap03.htm">Next Chapter</a> ] 
    </FONT>
    <BR>
 Last Update:09/26/2001</P></DIV>

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