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<span class="Comment">//: A simple test harness. To create new tests define functions starting with</span>
<span class="Comment">//: 'test_'. To run all tests so defined, run:</span>
<span class="Comment">//:   $ wart test</span>
<span class="Comment">//:</span>
<span class="Comment">//: So far it seems tasteful for layers to never ever reach back to modify</span>
<span class="Comment">//: previously-defined tests. Every test is a contract once written, and should</span>
<span class="Comment">//: pass as-is if it is included, regardless of how much later layers change</span>
<span class="Comment">//: the program. Avoid writing 'temporary' tests that only work with some</span>
<span class="Comment">//: subsets of the program.</span>

<span class="Delimiter">:(before &quot;End Types&quot;)</span>
typedef void <span class="Delimiter">(</span>*test_fn<span class="Delimiter">)(</span>void<span class="Delimiter">);</span>

<span class="Delimiter">:(before &quot;End Globals&quot;)</span>
const test_fn Tests[] = <span class="Delimiter">{</span>
<span class="PreProc">  #include </span><span class="Constant">&quot;test_list&quot;</span>  <span class="Comment">// auto-generated; see makefile</span>
<span class="Delimiter">};</span>

bool Run_tests = <span class="Constant">false</span><span class="Delimiter">;</span>
bool Passed = <span class="Constant">true</span><span class="Delimiter">;</span>  <span class="Comment">// set this to false inside any test to indicate failure</span>
long Num_failures = <span class="Constant">0</span><span class="Delimiter">;</span>

<span class="PreProc">#define CHECK(X) \</span>
<span class="PreProc">  </span>if<span class="PreProc"> (!(X)) </span><span class="Delimiter">{</span><span class="PreProc"> \</span>
<span class="PreProc">    ++Num_failures</span><span class="Delimiter">;</span><span class="PreProc"> \</span>
<span class="PreProc">    cerr &lt;&lt; </span><span class="Constant">&quot;</span><span class="cSpecial">\n</span><span class="Constant">F - &quot;</span><span class="PreProc"> &lt;&lt; __FUNCTION__ &lt;&lt; </span><span class="Constant">&quot;(&quot;</span><span class="PreProc"> &lt;&lt; </span><span class="Constant">__FILE__</span><span class="PreProc"> &lt;&lt; </span><span class="Constant">&quot;:&quot;</span><span class="PreProc"> &lt;&lt; </span><span class="Constant">__LINE__</span><span class="PreProc"> &lt;&lt; </span><span class="Constant">&quot;): &quot;</span><span class="PreProc"> &lt;&lt; #X &lt;&lt; </span><span class="cSpecial">'\n'</span><span class="Delimiter">;</span><span class="PreProc"> \</span>
<span class="PreProc">    Passed = </span><span class="Constant">false</span><span class="Delimiter">;</span><span class="PreProc"> \</span>
<span class="PreProc">    </span><span class="Identifier">return</span><span class="Delimiter">;</span><span class="PreProc">  </span><span class="Comment">/*</span><span class="Comment"> Currently we stop at the very first failure. </span><span class="Comment">*/</span><span class="PreProc"> \</span>
<span class="PreProc">  </span><span class="Delimiter">}</span>

<span class="PreProc">#define CHECK_EQ(X</span><span class="Delimiter">,</span><span class="PreProc"> Y) \</span>
<span class="PreProc">  </span>if<span class="PreProc"> ((X) != (Y)) </span><span class="Delimiter">{</span><span class="PreProc"> \</span>
<span class="PreProc">    ++Num_failures</span><span class="Delimiter">;</span><span class="PreProc"> \</span>
<span class="PreProc">    cerr &lt;&lt; </span><span class="Constant">&quot;</span><span class="cSpecial">\n</span><span class="Constant">F - &quot;</span><span class="PreProc"> &lt;&lt; __FUNCTION__ &lt;&lt; </span><span class="Constant">&quot;(&quot;</span><span class="PreProc"> &lt;&lt; </span><span class="Constant">__FILE__</span><span class="PreProc"> &lt;&lt; </span><span class="Constant">&quot;:&quot;</span><span class="PreProc"> &lt;&lt; </span><span class="Constant">__LINE__</span><span class="PreProc"> &lt;&lt; </span><span class="Constant">&quot;): &quot;</span><span class="PreProc"> &lt;&lt; #X &lt;&lt; </span><span class="Constant">&quot; == &quot;</span><span class="PreProc"> &lt;&lt; #Y &lt;&lt; </span><span class="cSpecial">'\n'</span><span class="Delimiter">;</span><span class="PreProc"> \</span>
<span class="PreProc">    cerr &lt;&lt; </span><span class="Constant">&quot;  got &quot;</span><span class="PreProc"> &lt;&lt; (X) &lt;&lt; </span><span class="cSpecial">'\n'</span><span class="Delimiter">;</span><span class="PreProc">  </span><span class="Comment">/*</span><span class="Comment"> BEWARE: multiple eval </span><span class="Comment">*/</span><span class="PreProc"> \</span>
<span class="PreProc">    Passed = </span><span class="Constant">false</span><span class="Delimiter">;</span><span class="PreProc"> \</span>
<span class="PreProc">    </span><span class="Identifier">return</span><span class="Delimiter">;</span><span class="PreProc">  </span><span class="Comment">/*</span><span class="Comment"> Currently we stop at the very first failure. </span><span class="Comment">*/</span><span class="PreProc"> \</span>
<span class="PreProc">  </span><span class="Delimiter">}</span>

<span class="Delimiter">:(before &quot;End Setup&quot;)</span>
Passed = <span class="Constant">true</span><span class="Delimiter">;</span>

<span class="Delimiter">:(before &quot;End Commandline Parsing&quot;)</span>
if <span class="Delimiter">(</span>argc &gt; <span class="Constant">1</span> &amp;&amp; is_equal<span class="Delimiter">(</span>argv[<span class="Constant">1</span>]<span class="Delimiter">,</span> <span class="Constant">&quot;test&quot;</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
  Run_tests = <span class="Constant">true</span><span class="Delimiter">;</span>  --argc<span class="Delimiter">;</span>  ++argv<span class="Delimiter">;</span>  <span class="Comment">// shift 'test' out of commandline args</span>
<span class="Delimiter">}</span>

<span class="Delimiter">:(before &quot;End Main&quot;)</span>
if <span class="Delimiter">(</span>Run_tests<span class="Delimiter">)</span> <span class="Delimiter">{</span>
  <span class="Comment">// Test Runs</span>
  <span class="Comment">// we run some tests and then exit; assume no state need be maintained afterward</span>

  <span class="Comment">// End Test Run Initialization</span>
  time_t t<span class="Delimiter">;</span> time<span class="Delimiter">(</span>&amp;t<span class="Delimiter">);</span>
  cerr &lt;&lt; <span class="Constant">&quot;C tests: &quot;</span> &lt;&lt; ctime<span class="Delimiter">(</span>&amp;t<span class="Delimiter">);</span>
  for <span class="Delimiter">(</span>index_t i=<span class="Constant">0</span><span class="Delimiter">;</span> i &lt; sizeof<span class="Delimiter">(</span>Tests<span class="Delimiter">)</span>/sizeof<span class="Delimiter">(</span>Tests[<span class="Constant">0</span>]<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
    run_test<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
  <span class="Delimiter">}</span>
  <span class="Comment">// End Tests</span>
  cerr &lt;&lt; <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
  if <span class="Delimiter">(</span>Num_failures &gt; <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
    cerr &lt;&lt; Num_failures &lt;&lt; <span class="Constant">&quot; failure&quot;</span>
         &lt;&lt; <span class="Delimiter">(</span>Num_failures &gt; <span class="Constant">1</span> ? <span class="Constant">&quot;s&quot;</span> : <span class="Constant">&quot;&quot;</span><span class="Delimiter">)</span>
         &lt;&lt; <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
    <span class="Identifier">return</span> <span class="Constant">1</span><span class="Delimiter">;</span>
  <span class="Delimiter">}</span>
  <span class="Identifier">return</span> <span class="Constant">0</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>

<span class="Delimiter">:(code)</span>
void run_test<span class="Delimiter">(</span>index_t i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
  if <span class="Delimiter">(</span>i &gt;= sizeof<span class="Delimiter">(</span>Tests<span class="Delimiter">)</span>/sizeof<span class="Delimiter">(</span>Tests[<span class="Constant">0</span>]<span class="Delimiter">))</span> <span class="Delimiter">{</span>
    cerr &lt;&lt; <span class="Constant">&quot;no test &quot;</span> &lt;&lt; i &lt;&lt; <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
    <span class="Identifier">return</span><span class="Delimiter">;</span>
  <span class="Delimiter">}</span>
  setup<span class="Delimiter">();</span>
  <span class="Comment">// End Test Setup</span>
  <span class="Delimiter">(</span>*Tests[i]<span class="Delimiter">)();</span>
  teardown<span class="Delimiter">();</span>
  if <span class="Delimiter">(</span>Passed<span class="Delimiter">)</span> cerr &lt;&lt; <span class="Constant">&quot;.&quot;</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>

bool is_number<span class="Delimiter">(</span>const string&amp; s<span class="Delimiter">)</span> <span class="Delimiter">{</span>
  <span class="Identifier">return</span> s<span class="Delimiter">.</span>find_first_not_of<span class="Delimiter">(</span><span class="Constant">&quot;0123456789-.&quot;</span><span class="Delimiter">)</span> == string::npos<span class="Delimiter">;</span>
<span class="Delimiter">}</span>

long long int to_number<span class="Delimiter">(</span>string n<span class="Delimiter">)</span> <span class="Delimiter">{</span>
  char* end = <span class="Constant">NULL</span><span class="Delimiter">;</span>
  long long int result = strtoll<span class="Delimiter">(</span>n<span class="Delimiter">.</span>c_str<span class="Delimiter">(),</span> &amp;end<span class="Delimiter">,</span> <span class="Comment">/*</span><span class="Comment">any base</span><span class="Comment">*/</span><span class="Constant">0</span><span class="Delimiter">);</span>
  assert<span class="Delimiter">(</span>*end == <span class="cSpecial">'\0'</span><span class="Delimiter">);</span>
  <span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span class="Delimiter">}</span>

<span class="Delimiter">:(before &quot;End Includes&quot;)</span>
<span class="PreProc">#include</span><span class="Constant">&lt;cstdlib&gt;</span>
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