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);
}
public void EvaluateTest()
{
TestInput[] ti =
{
new TestInput(status.istrue, "1 && !0"),
new TestInput(status.istrue, "!0"),
new TestInput(status.istrue, "!0.0"),
new TestInput(status.isfalse, "!1"),
new TestInput(status.isfalse, "!37.42385"),
new TestInput(status.isfalse, "!(1)"),
new TestInput(status.istrue, "!(0)"),
new TestInput(status.istrue, "57 > !63"),
new TestInput(status.istrue, "!(0) || !(1) && (57 > 42.3) || !47"),
new TestInput(status.isfalse, "[!(0) || !(1) && (57 > 42.3) || !47] && 0"),
new TestInput(status.isfalse, "!(!(0) || !(1) && (57 > 42.3) || !47)"),
new TestInput(status.istrue, "1 != 0"),
new TestInput(status.isfalse, "25.3 != 25.3"),
new TestInput(status.istrue, "121.347"),
new TestInput(status.isfalse, "0.0"),
new TestInput(status.istrue, "58"),
new TestInput(status.isfalse, "0"),
new TestInput(status.istrue, "321.2 = 321.2"),
new TestInput(status.istrue, "(121.347)"),
new TestInput(status.isfalse, "(0.0)"),
new TestInput(status.istrue, "(58)"),
new TestInput(status.isfalse, "(0)"),
new TestInput(status.istrue, "(321.2 = 321.2)"),
new TestInput(status.istrue, "123.2 > 123.1"),
new TestInput(status.istrue, "537.89 < 788.47"),
new TestInput(status.istrue, "321.2 = 321.2"),
new TestInput(status.isfalse, "321.2 = 321.1"),
new TestInput(status.istrue, "57 = 57"),
new TestInput(status.isfalse, "57 = -57"),
new TestInput(status.isundefined, "57 = x"),
new TestInput(status.isfalse, "6380.5672 < 1043.61"),
new TestInput(status.isfalse, "57.8973 > 100.42"),
new TestInput(status.istrue, "-5 < 2"),
new TestInput(status.istrue, "5 > 2"),
new TestInput(status.istrue, "50 < 10043"),
new TestInput(status.isfalse, "12 < 4"),
new TestInput(status.isfalse, "47 > 89"),
new TestInput(status.istrue, "(1 && 0) || (1 && 1)"),
new TestInput(status.isfalse, "((1 && 0) || (1 && 1)) && 0"),
new TestInput(status.isundefined, "((1 && 0) || (1 && 1)) && x"),
new TestInput(status.isfalse, "(1 && 0) || (1 && 0)"),
new TestInput(status.istrue, "1 || 0 && 0"),
new TestInput(status.isfalse, "(1 || 0) && 0"),
new TestInput(status.istrue, "1 && 1"),
new TestInput(status.isfalse, "1 && 0"),
new TestInput(status.istrue, "1 || 0 && 1"),
new TestInput(status.istrue, "1 && 1 || 1 && 0"),
new TestInput(status.istrue, "1 || 0 && 1 && 1"),
new TestInput(status.isfalse, "1 && 1 && 0 && 1"),
new TestInput(status.isundefined, "1 && x"),
new TestInput(status.isfalse, "0 && x && 0 && 1"),
new TestInput(status.isundefined, "0 || x"),
new TestInput(status.istrue, "1 || x"),
new TestInput(status.istrue, "1 || true"),
new TestInput(status.isfalse, "1 && false"),
new TestInput(status.istrue, "1 && true"),
new TestInput(status.isundefined, "1 && true && x"),
new TestInput(status.isfalse, "1 && false && x"),
new TestInput(status.incomplete, "1 & false & x"),
new TestInput(status.incomplete, "1 | false | x"),
new TestInput(status.isundefined, "57 > x"),
new TestInput(status.isundefined, "x > x"),
new TestInput(status.isundefined, "x > 57"),
new TestInput(status.isundefined, "57 < x"),
new TestInput(status.isundefined, "x < x"),
new TestInput(status.isundefined, "x < 57"),
new TestInput(status.isundefined, "57 = x"),
new TestInput(status.isundefined, "x = x"),
new TestInput(status.isundefined, "x = 57"),
new TestInput(status.isundefined, "57 != x"),
new TestInput(status.isundefined, "x != x"),
new TestInput(status.isundefined, "x != 57"),
new TestInput(status.isundefined, "!x"),
new TestInput(status.isfalse, "0 && 1"),
new TestInput(status.invalidexpression, "ABCD***"),
new TestInput(status.noexpression, "")
};
LogicExpressionEvaluator_Accessor target = new LogicExpressionEvaluator_Accessor();
for (int i = 0; i < ti.Length; i++)
{
try
{
status retStatus = LogicExpressionEvaluator_Accessor.Evaluate(ti[i].e);
Assert.AreEqual(ti[i].expected, retStatus, ti[i].e);
if (!ti[i].e.Contains("x") && (ti[i].expected == status.istrue || ti[i].expected == status.isfalse))
{
string response = (LogicExpressionEvaluatorTest.EvalJScript(ti[i].e)).ToString();
status jscript_status = status.isfalse;
if (response.ToLower() == "true")
{
jscript_status = status.istrue;
}
// Since the JavaScript engine can return things other than true/false, we'll only verify true/false responses
if ((response.ToLower() == "true") || (response.ToLower() == "false"))
{
Assert.AreEqual(ti[i].expected, jscript_status, "JScript evaluation was \"" + response + "\" for expression \"" + ti[i].e + "\"");
}
}
}
catch (Exception ex)
{
string msg = ex.Message;
throw;
}
}
}
