public void Constructor_WithoutValue_ExpectedValues(int numberOfDecimalPlaces)
{
// Call
var roundedDouble = new RoundedDouble(numberOfDecimalPlaces);
// Assert
Assert.IsInstanceOf <IEquatable <RoundedDouble> >(roundedDouble);
Assert.IsInstanceOf <IEquatable <double> >(roundedDouble);
Assert.IsInstanceOf <IFormattable>(roundedDouble);
Assert.IsInstanceOf <IComparable>(roundedDouble);
Assert.IsInstanceOf <IComparable <RoundedDouble> >(roundedDouble);
Assert.IsInstanceOf <IComparable <double> >(roundedDouble);
Assert.AreEqual(numberOfDecimalPlaces, roundedDouble.NumberOfDecimalPlaces);
Assert.AreEqual(0.0, roundedDouble.Value);
TypeConverterAttribute[] typeAttributes = roundedDouble.GetType().GetCustomAttributes(typeof(TypeConverterAttribute), false)
.Cast <TypeConverterAttribute>()
.ToArray();
Assert.AreEqual(1, typeAttributes.Length);
Assert.AreEqual(new TypeConverterAttribute(typeof(RoundedDoubleConverter)), typeAttributes[0]);
}