From 4f96052772c46ceba8ca074e4206646661462533 Mon Sep 17 00:00:00 2001
From: David <david@xagasoft.com>
Date: Thu, 17 Mar 2011 17:39:59 +0000
Subject: david - added a hash table stress unit test

---
 src/unit/hash.unit | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

(limited to 'src/unit')

diff --git a/src/unit/hash.unit b/src/unit/hash.unit
index 64e70b6..d2217e7 100644
--- a/src/unit/hash.unit
+++ b/src/unit/hash.unit
@@ -10,6 +10,8 @@
 #include "bu/hash.h"
 
 #include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
 
 typedef Bu::Hash<Bu::String, int> StrIntHash;
 typedef Bu::Hash<Bu::String, Bu::String> StrStrHash;
@@ -97,4 +99,59 @@ suite Hash
 		StrIntHash h3 = h.clone();
 		unitTest( !h3.isCoreShared( h ) );
 	}
+
+	test stress
+	{
+		srandom(time(NULL));
+
+		IntStrHash hTest;
+		setStepCount( 1000000 );
+
+		for( int i=0; i<1000000; ++i )
+		{
+			char buf[40]; snprintf(buf,40,"num%d",i);
+			hTest[i] = buf;
+			incProgress();
+
+			/*printf("(%s) size: %u fill: %u cap:%u\n",
+				buf,
+				hTest.getSize(),
+				hTest.getFill(),
+				hTest.getCapacity()
+				);*/
+
+			if( ((double)random()/(double)RAND_MAX)<.3 )
+			{
+				Bu::List<int> lKeys = hTest.getKeys();
+				int iIdx = (int)(((double)random()/(double)RAND_MAX)
+					*lKeys.getSize());
+				Bu::List<int>::const_iterator it = lKeys.begin();
+				for( int k=0; it; ++it, ++k )
+				{
+					if( k == iIdx )
+						hTest.erase( *it );
+				}
+			}
+
+			if( hTest.getSize() > 100 )
+			{
+				int iK = (int)(((double)random()/(double)RAND_MAX)*50)+10;
+				for( int j=0; j<iK; ++j )
+				{
+					Bu::List<int> lKeys = hTest.getKeys();
+					int iIdx = (int)(((double)random()/(double)RAND_MAX)
+						*lKeys.getSize());
+					Bu::List<int>::const_iterator it = lKeys.begin();
+					for( int k=0; it; ++it, ++k )
+					{
+						if( k == iIdx )
+						{
+							hTest.erase( *it );
+							break;
+						}
+					}
+				}
+			}
+		}
+	}
 }
-- 
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