improved osiTime test

src/libCom/test/osiTimeTest.cc

@@ -3,12 +3,13 @@
 
 #include "tsDefs.h"
 #include "osiTime.h"
+#include "osiSleep.h"
 
 int main ()
 {
 	unsigned i;
 	osiTime begin = osiTime::getCurrent();
-	const unsigned iter = 1000000u;
+	const unsigned iter = 100000u;
 	TS_STAMP stamp;
 	char stampText[128];
 
@@ -18,8 +19,9 @@ int main ()
 
 	osiTime end = osiTime::getCurrent();
 
+	osiTime diff = end - begin;
 	printf ("elapsed per call to osiTime::getCurrent() = %f\n", 
-		((double) (end-begin))/iter);
+		((double) diff)/iter);
 
 	stamp = osiTime::getCurrent();
 
@@ -27,5 +29,30 @@ int main ()
 
 	printf ("osiTime::getCurrent() = %s\n", stampText);
 
+	osiTime copy = end;
+	assert (copy==end);
+	assert (copy<=end);
+	assert (copy>=end);
+	assert (end>begin);
+	assert (end>=begin);
+	assert (begin<end);
+	assert (begin<=end);
+	assert (begin!=end);
+	assert (end-begin==diff);
+	begin += diff;
+	assert (begin==end);
+	begin -= diff;
+	assert (begin+diff==end);
+
+	//
+	// examine the drift
+	//
+#if 0
+	while (1) {
+		osiTime::synchronize();
+		osiSleep (10 /* sec */, 0 /* uSec */);
+	}
+#endif
+
 	return 0;
 }