public void Test()
{
AlgorithmEngine engine = new AlgorithmEngine();
double t = 0.0;
if (engine.Parse("1+2"))
{
t = (double)engine.Evaluate();
}
Assert.AreEqual(3.0, t);
var c = engine.TryEvaluate("2+3", 0);
Assert.AreEqual(5, c);
var e = engine.TryEvaluate("e", 0.0);
Assert.AreEqual(Math.E, e);
e = engine.TryEvaluate("pi", 0.0);
Assert.AreEqual(Math.PI, e);
var b = engine.TryEvaluate("true", true);
Assert.AreEqual(true, b);
b = engine.TryEvaluate("false", false);
Assert.AreEqual(false, b);
var b1 = engine.TryEvaluate("if(true,1,2)", 0);
Assert.AreEqual(1, b1);
b1 = engine.TryEvaluate("if(false,1,2)", 0);
Assert.AreEqual(2, b1);
var b2 = engine.TryEvaluate("pi*4", 0.0);
Assert.AreEqual(Math.PI * 4, b2);
b2 = engine.TryEvaluate("e*4", 0.0);
Assert.AreEqual(Math.E * 4, b2);
var s = engine.TryEvaluate("'aa'&'bb'", "");
Assert.AreEqual("aabb", s);
var r = engine.TryEvaluate("count({ 1,2,3,4})", 0);
Assert.AreEqual(4, r);
r = engine.TryEvaluate("(1=1)*9+2", 0);
Assert.AreEqual(11, r);;
r = engine.TryEvaluate("(1=2)*9+2", 0);
Assert.AreEqual(2, r);;
var dt = engine.TryEvaluate("'2016-1-1'+1", DateTime.MinValue);
Assert.AreEqual(DateTime.Parse("2016-1-2"), dt);;
dt = engine.TryEvaluate("'2016-1-1'+9*'1:0'", DateTime.MinValue);
Assert.AreEqual(DateTime.Parse("2016-1-1 9:0"), dt);;
}
public void name_Test()
{
AlgorithmEngine engine = new AlgorithmEngine();
if (engine.Parse("a", "1+(3*2+2)/2"))
{
var t = engine.Evaluate("a");
Assert.AreEqual(5, (int)(double)t);
return;
}
throw new Exception("");
}