public void ComplieTests(string equStr, double exp, params double[] nums)
{
IStringEquation eq = StringEquationSetup.BuildStringEquation(equStr);
double result = eq.Evaluate(nums);
Assert.That(eq.EquationArguments.Count(), Is.EqualTo(nums.Count()));
Assert.That(result, Is.EqualTo(exp).Within(0.1).Percent);
}
public void VarNameTests(string equStr, double exp, params double[] nums)
{
IStringEquation eq = StringEquationSetup.BuildStringEquation(equStr);
double result = eq.Evaluate(nums);
Assert.That(eq.EquationArguments.Count(), Is.EqualTo(nums.Count()));
Assert.That(eq.EquationArguments.ElementAt(0), Is.EqualTo("My.Good"));
Assert.That(eq.EquationArguments.ElementAt(1), Is.EqualTo("Inputs.Are.Fun"));
Assert.That(result, Is.EqualTo(exp).Within(0.1).Percent);
}
public void BinaryShouldWorkUnlessDivdeByZero(double x, double y)
{
IStringEquation eq = StringEquationSetup.BuildStringEquation($"{x}{optStr}{y}");
if (y == 0 && optStr == "/")
{
Assert.Throws <DivideByZeroException>(() => eq.Evaluate(x, y));
}
else
{
Assert.That(eq.Evaluate(x, y), Is.EqualTo(func(x, y)).Within(0.1).Percent);
}
}
public void Variable(string equStr, double exp, params double[] nums)
{
IStringEquation eq = StringEquationSetup.BuildStringEquation(equStr);
double result = eq.Evaluate(nums);
Assert.That(eq.EquationArguments.Count(), Is.EqualTo(nums.Length));
for (int i = 0; i < nums.Length; i++)
{
Assert.That(eq.EquationArguments.ElementAt(i), Is.EqualTo(i.ToString()));
}
Assert.That(result, Is.EqualTo(exp).Within(0.1).Percent);
}
public void FunctionWithinFunctionShouldWork(double x)
{
IStringEquation eq = StringEquationSetup.BuildStringEquation($"Pow(Pow({x},{x}),{x})");
Assert.AreEqual(Math.Pow(Math.Pow(x, x), x), eq.Evaluate(), 1e-3);
}
public void PiShouldWork(double x)
{
IStringEquation eq = StringEquationSetup.BuildStringEquation($"PI / 4 * {x} * {x}");
Assert.AreEqual(Math.PI / 4 * x * x, eq.Evaluate(), 1e-3);
}
public void PowShouldWork(double x, double y)
{
IStringEquation eq = StringEquationSetup.BuildStringEquation($"Pow({x},{y})");
Assert.AreEqual(Math.Pow(x, y), eq.Evaluate(), 1e-3);
}
public void SqrtShouldWork(double x)
{
IStringEquation eq = StringEquationSetup.BuildStringEquation($"Sqrt({x})");
Assert.AreEqual(Math.Sqrt(x), eq.Evaluate(), 1e-3);
}
public void BinaryShouldWorkWithWhiteSpace(string strEq, double x, double y)
{
IStringEquation eq = StringEquationSetup.BuildStringEquation(string.Format(strEq, x, optStr, y));
Assert.AreEqual(func(x, y), eq.Evaluate(x, y), 0.001);
}
public void OrderOfOperations(string strEq, double exp)
{
IStringEquation eq = StringEquationSetup.BuildStringEquation(strEq);
Assert.That(eq.Evaluate(), Is.EqualTo(exp).Within(0.001));
}
public void UniaryMinusShouldWork(string stringEquation, double expected)
{
IStringEquation eq = StringEquationSetup.BuildStringEquation(stringEquation);
Assert.AreEqual(eq.Evaluate(), expected);
}