public void SameValueZero()
{
// undefined
Assert.AreEqual(true, TypeComparer.SameValueZero(Undefined.Value, Undefined.Value));
Assert.AreEqual(false, TypeComparer.SameValueZero(Undefined.Value, Null.Value));
Assert.AreEqual(false, TypeComparer.SameValueZero(Undefined.Value, 0));
Assert.AreEqual(true, TypeComparer.SameValueZero(null, null));
Assert.AreEqual(true, TypeComparer.SameValueZero(null, Undefined.Value));
Assert.AreEqual(false, TypeComparer.SameValueZero(null, Null.Value));
Assert.AreEqual(false, TypeComparer.SameValueZero(null, 0));
// null
Assert.AreEqual(true, TypeComparer.SameValueZero(Null.Value, Null.Value));
Assert.AreEqual(false, TypeComparer.SameValueZero(Null.Value, Undefined.Value));
Assert.AreEqual(false, TypeComparer.SameValueZero(Null.Value, 0));
// number
Assert.AreEqual(true, TypeComparer.SameValueZero(+0.0, +0.0));
Assert.AreEqual(true, TypeComparer.SameValueZero(-0.0, -0.0));
Assert.AreEqual(true, TypeComparer.SameValueZero(+0.0, -0.0));
Assert.AreEqual(true, TypeComparer.SameValueZero(-0.0, +0.0));
Assert.AreEqual(true, TypeComparer.SameValueZero(1, 1));
Assert.AreEqual(false, TypeComparer.SameValueZero(0, 1));
Assert.AreEqual(true, TypeComparer.SameValueZero(5, 5.0));
Assert.AreEqual(true, TypeComparer.SameValueZero(5.0, 5));
Assert.AreEqual(true, TypeComparer.SameValueZero(5.0, 5.0));
Assert.AreEqual(false, TypeComparer.SameValueZero(5.0, 6.0));
Assert.AreEqual(true, TypeComparer.SameValueZero(double.NaN, double.NaN));
Assert.AreEqual(false, TypeComparer.SameValueZero(double.NaN, 5));
Assert.AreEqual(false, TypeComparer.SameValueZero(double.NaN, 5.0));
Assert.AreEqual(false, TypeComparer.SameValueZero(0, "0"));
// string
Assert.AreEqual(true, TypeComparer.SameValueZero("", ""));
Assert.AreEqual(true, TypeComparer.SameValueZero("a", "a"));
Assert.AreEqual(false, TypeComparer.SameValueZero("a", "b"));
Assert.AreEqual(false, TypeComparer.SameValueZero("0", 0));
// bool
Assert.AreEqual(true, TypeComparer.SameValueZero(false, false));
Assert.AreEqual(true, TypeComparer.SameValueZero(true, true));
Assert.AreEqual(false, TypeComparer.SameValueZero(true, false));
Assert.AreEqual(false, TypeComparer.SameValueZero(false, 0));
// object
var engine = new ScriptEngine();
var temp1 = engine.Object.Construct();
var temp2 = engine.Object.Construct();
var number1 = engine.Number.Construct(5.0);
Assert.AreEqual(true, TypeComparer.SameValueZero(temp1, temp1));
Assert.AreEqual(false, TypeComparer.SameValueZero(temp1, temp2));
Assert.AreEqual(true, TypeComparer.SameValueZero(number1, number1));
Assert.AreEqual(false, TypeComparer.SameValueZero(number1, 5.0));
}
/// <summary>
/// Determines whether an array includes a certain value among its entries.
/// </summary>
/// <param name="searchElement"> The value to search for. </param>
/// <param name="fromIndex"> The array index to start searching. </param>
/// <returns> <c>true</c> given search element in the array, or <c>false</c> if the element
/// wasn't found. </returns>
public bool Includes(object searchElement, int fromIndex)
{
// If fromIndex is less than zero, it is an offset from the end of the array.
if (fromIndex < 0)
{
fromIndex += Length;
}
for (int i = Math.Max(fromIndex, 0); i < Length; i++)
{
// Get the value of the array element.
object elementValue = this[i];
// Compare the given search element with the array element.
if (TypeComparer.SameValueZero(searchElement, elementValue) == true)
{
return(true);
}
}
// The search element wasn't found.
return(false);
}
public new bool Equals(object x, object y)
{
return(TypeComparer.SameValueZero(x, y));
}
