public static void FnvHashCode_Combine_3()
{
foreach (var a in Expected)
{
foreach (var b in Expected)
{
foreach (var c in Expected)
{
var aSpan = new[] { a, b, c }.AsSpan().NonPortableCast <int, byte>();
var bSpan = new[] { c, b, a }.AsSpan().NonPortableCast <int, byte>();
if (System.Linq.Enumerable.SequenceEqual(new[] { a, b, c }, new[] { c, b, a }))
{
Assert.Equal(FnvHashCode.Combine(a, b, c), FnvHashCode.Combine(c, b, a));
Assert.Equal(FnvHashCode.Combine(aSpan), FnvHashCode.Combine(bSpan));
}
else
{
Assert.NotEqual(FnvHashCode.Combine(a, b, c), FnvHashCode.Combine(c, b, a));
Assert.NotEqual(FnvHashCode.Combine(bSpan), FnvHashCode.Combine(aSpan));
}
}
}
}
}
public static void FnvHashCode_TestVectors(ulong expected, string value)
{
// Using 'FNV-1a 32' test vectors from http://www.isthe.com/chongo/tech/comp/fnv
var bytes = Encoding.UTF8.GetBytes(value);
var actual = FnvHashCode.Combine(bytes);
Assert.Equal(expected, (uint)actual);
}
public static void FnvHashCode_Check_2(int expected, int a, int b)
{
var actual = FnvHashCode.Combine(a, b);
Assert.Equal(expected, actual);
if (a == b)
{
Assert.Equal(FnvHashCode.Combine(a, b), FnvHashCode.Combine(b, a));
}
else
{
Assert.NotEqual(FnvHashCode.Combine(a, b), FnvHashCode.Combine(b, a));
}
}
public static void FnvHashCode_Combine_2()
{
foreach (var a in Expected)
{
foreach (var b in Expected)
{
if (a == b)
{
Assert.Equal(FnvHashCode.Combine(a, b), FnvHashCode.Combine(b, a));
}
else
{
Assert.NotEqual(FnvHashCode.Combine(a, b), FnvHashCode.Combine(b, a));
}
}
}
}
