public void Equals_Object_ReturnsExpected(DisplayNameAttribute attribute, object other, bool expected)
{
Assert.Equal(expected, attribute.Equals(other));
if (other is DisplayNameAttribute otherAttribute && otherAttribute.DisplayName != null && attribute.DisplayName != null)
{
Assert.Equal(expected, attribute.GetHashCode().Equals(other.GetHashCode()));
}
}
public void GetHashCodeTest()
{
DisplayNameAttribute dn = new DisplayNameAttribute();
Assert.AreEqual(string.Empty.GetHashCode(), dn.GetHashCode(), "#A1");
dn = new DisplayNameAttribute("A");
Assert.AreEqual("A".GetHashCode(), dn.GetHashCode(), "#A2");
// https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=288534
dn = new DisplayNameAttribute(null);
try {
dn.GetHashCode();
Assert.Fail("#B1");
} catch (NullReferenceException) {
}
}
public void GetHashCode_NullDisplayName_ThrowsNullReferenceException()
{
var attribute = new DisplayNameAttribute(null);
Assert.Throws <NullReferenceException>(() => attribute.GetHashCode());
}