public void MathExpressionFunctionFactory_Function_Name_Is_Not_Case_Sensitive()
{
Assert.IsNotNull(MathExpressionFunctionFactory.Default.GetFunction("sin"));
Assert.IsInstanceOf<SineFunction>(MathExpressionFunctionFactory.Default.GetFunction("sin"));
Assert.IsNotNull(MathExpressionFunctionFactory.Default.GetFunction("Sin"));
Assert.IsInstanceOf<SineFunction>(MathExpressionFunctionFactory.Default.GetFunction("Sin"));
Assert.IsNotNull(MathExpressionFunctionFactory.Default.GetFunction("SIN"));
Assert.IsInstanceOf<SineFunction>(MathExpressionFunctionFactory.Default.GetFunction("SIN"));
}