public void CoseHeaderLabel_GetHashCode()
{
// First, construct a COSE header of (0) using several different methods.
// They should all have the same hash code, though we don't know what
// the hash code is.
CoseHeaderLabel label1 = default;
CoseHeaderLabel label2 = new CoseHeaderLabel();
CoseHeaderLabel label3 = new CoseHeaderLabel(0);
int label1HashCode = label1.GetHashCode();
Assert.Equal(label1HashCode, label2.GetHashCode());
Assert.Equal(label1HashCode, label3.GetHashCode());
// Make sure the integer hash code calculation really is randomized.
// Checking 1 & 2 together rather than independently cuts the false
// positive rate down to nearly 1 in 2^64.
bool isReturningNormalInt32HashCode =
(new CoseHeaderLabel(1).GetHashCode() == 1) &&
(new CoseHeaderLabel(2).GetHashCode() == 2);
Assert.False(isReturningNormalInt32HashCode);
// Make sure the string hash code calculation really is randomized.
// Checking 1 & 2 together rather than independently cuts the false
// positive rate down to nearly 1 in 2^64.
bool isReturningNormalStringHashCode =
(new CoseHeaderLabel("Hello").GetHashCode() == "Hello".GetHashCode()) &&
(new CoseHeaderLabel("World").GetHashCode() == "World".GetHashCode());
Assert.Equal(PlatformDetection.IsNetCore, isReturningNormalStringHashCode);
}
public void CoseHeaderLabel_GetHashCode()
{
CoseHeaderLabel label = default;
Assert.Equal(0, label.GetHashCode()); // There's no need to call GetHashCode on integers as they are their own hashcode.
label = new CoseHeaderLabel();
Assert.Equal(0, label.GetHashCode());
label = new CoseHeaderLabel(0);
Assert.Equal(0, label.GetHashCode());
label = new CoseHeaderLabel("");
Assert.Equal("".GetHashCode(), label.GetHashCode());
label = new CoseHeaderLabel(1);
Assert.Equal(1, label.GetHashCode());
label = new CoseHeaderLabel("content-type");
Assert.Equal("content-type".GetHashCode(), label.GetHashCode());
}
