public void ValidateExpressionTest()
{
TestInput[] ti =
{
// good expressions
new TestInput(status.success, "[]()(())[[()]]"),
new TestInput(status.success, "50 < 10043"),
new TestInput(status.success, "1234 > 57"),
new TestInput(status.success, "-1234 < 57"),
new TestInput(status.success, "123.4 > 57.5"),
new TestInput(status.success, "123.2 > 123.1"),
// bad expressions
new TestInput(status.invalidexpression, "(5 > 3) && (1 || 0))("),
new TestInput(status.invalidexpression, "[(15 < 2) && (0 && 1)]]["),
new TestInput(status.invalidexpression, "abcdeftrue")
};
LogicExpressionEvaluator_Accessor target = new LogicExpressionEvaluator_Accessor(); // TODO: Initialize to an appropriate value
for (int i = 0; i < ti.Length; i++)
{
status retval = LogicExpressionEvaluator_Accessor.ValidateExpression(ti[i].e);
Assert.IsTrue((ti[i].expected == retval), ti[i].e);
}
}
public void PerformanceTest()
{
const int MAXLOOPS = 4000;
TestInput[] ti =
{
new TestInput(status.istrue, "1 && (0 || 1) && 5 > 2"),
new TestInput(status.isfalse, "1 && (!0 || 1) && 2 > 2")
};
LogicExpressionEvaluator_Accessor target = new LogicExpressionEvaluator_Accessor();
int startms = System.Environment.TickCount;
for (int i = 0; i < ti.Length; i++)
{
status retStatus = status.incomplete;
for (int loop = 0; loop < MAXLOOPS; loop++)
{
retStatus = LogicExpressionEvaluator_Accessor.Evaluate(ti[i].e);
}
Assert.AreEqual(ti[i].expected, retStatus, ti[i].e);
}
int endms = System.Environment.TickCount;
int elapsedms_evaluate = endms - startms;
startms = System.Environment.TickCount;
for (int i = 0; i < ti.Length; i++)
{
for (int loop = 0; loop < MAXLOOPS; loop++)
{
LogicExpressionEvaluator_Accessor.ValidateExpression(ti[i].e);
}
}
endms = System.Environment.TickCount;
int elapsedms_validate = endms - startms;
int evaluations = MAXLOOPS * ti.Length;
int elapsedmicroseconds = elapsedms_evaluate * 1000;
int microsecondsperevaluation = elapsedmicroseconds / evaluations;
// How fast is the regular expression in .NET ?
int js_startms = System.Environment.TickCount;
object response = new object();
for (int i = 0; i < ti.Length; i++)
{
for (int loop = 0; loop < MAXLOOPS; loop++)
{
response = LogicExpressionEvaluatorTest.EvalJScript(ti[i].e);
}
}
int js_endms = System.Environment.TickCount;
int js_elapsedms_evaluate = js_endms - js_startms;
int js_elapsedmicroseconds = js_elapsedms_evaluate * 1000;
int js_microsecondsperevaluation = js_elapsedmicroseconds / evaluations;
string msg = string.Format("{0} ms elapsed, {1} ms for validate ({2} expressions evaluated) {3} microseconds/eval [JS {4} microseconds/eval]", elapsedms_evaluate, elapsedms_validate, evaluations, microsecondsperevaluation, js_microsecondsperevaluation);
// we want to be at least 50% faster than the JavaScript engine (with evaluation no less!)
int targetmicrosecondsperevaluation = microsecondsperevaluation / 2 + microsecondsperevaluation;
Assert.IsTrue((js_microsecondsperevaluation > targetmicrosecondsperevaluation), msg);
}
