public void DefineExpTest()
{
var exp = new Define(new Variable("x"), new Mul(new Number(4), new Add(new Number(8), new Number(1))));
var parameters = new ExpressionParameters();
var answer = exp.Execute(parameters);
Assert.Equal(36.0, parameters.Variables["x"]);
Assert.Equal("The value '4 * (8 + 1)' was assigned to the variable 'x'.", answer);
}
public void DefineWithFuncTest()
{
var exp = new Define(new Variable("x"), new Sin(new Number(1)));
var parameters = new ParameterCollection();
var expParams = new ExpressionParameters(AngleMeasurement.Radian, parameters);
var answer = exp.Execute(expParams);
Assert.Equal(Math.Sin(1), parameters["x"]);
Assert.Equal("The value 'sin(1)' was assigned to the variable 'x'.", answer);
}
public void DefineFuncWithParamsTest()
{
var uf = new UserFunction("s", 1);
var func = new Sin(new Variable("x"));
var exp = new Define(uf, func);
var parameters = new ExpressionParameters();
var result = exp.Execute(parameters);
Assert.Equal(func, parameters.Functions[uf]);
Assert.Equal("The expression 'sin(x)' was assigned to the function 's(x1)'.", result);
}
public void DefineFuncTest()
{
var uf = new UserFunction("s", new IExpression[0], 0);
var func = new Sin(new Number(1));
var exp = new Define(uf, func);
var parameters = new ExpressionParameters();
var result = exp.Execute(parameters);
Assert.Equal(func, parameters.Functions[uf]);
Assert.Equal("The expression 'sin(1)' was assigned to the function 's()'.", result);
}
public void OverrideConstTest()
{
var exp = new Define(new Variable("π"), new Number(1));
var parameters = new ExpressionParameters();
exp.Execute(parameters);
Assert.Equal(1.0, parameters.Variables["π"]);
}
public void SimpDefineTest()
{
var exp = new Define(new Variable("x"), new Number(1));
var parameters = new ExpressionParameters();
var answer = exp.Execute(parameters);
Assert.Equal(1.0, parameters.Variables["x"]);
Assert.Equal("The value '1' was assigned to the variable 'x'.", answer);
}