public void OverrideConstTest()
{
IExpression exp = new Define(new Variable("π"), new Number(1));
ParameterCollection parameters = new ParameterCollection();
var answer = exp.Calculate(parameters);
Assert.AreEqual(1.0, parameters["π"]);
}
public void SimpDefineTest()
{
IExpression exp = new Define(new Variable("x"), new Number(1));
ParameterCollection parameters = new ParameterCollection();
var answer = exp.Calculate(parameters);
Assert.AreEqual(1.0, parameters["x"]);
Assert.AreEqual(double.NaN, answer);
}
public void DefineExpTest()
{
IExpression exp = new Define(new Variable("x"), new Mul(new Number(4), new Add(new Number(8), new Number(1))));
ParameterCollection parameters = new ParameterCollection();
var answer = exp.Calculate(parameters);
Assert.AreEqual(36, parameters["x"]);
Assert.AreEqual(double.NaN, answer);
}
public void DefineWithFuncTest()
{
IExpression exp = new Define(new Variable("x"), new Sin(new Number(1)));
ParameterCollection parameters = new ParameterCollection();
ExpressionParameters expParams = new ExpressionParameters(AngleMeasurement.Radian, parameters);
var answer = exp.Calculate(expParams);
Assert.AreEqual(Math.Sin(1), parameters["x"]);
Assert.AreEqual(double.NaN, answer);
}