public void TestUInt16ToSByteNullable()
{
// Test conversion of source type minimum value
UInt16 source = UInt16.MinValue;
Assert.IsInstanceOfType(source, typeof(UInt16));
SByte?result = source.ToSByteNullable();
Assert.AreEqual((sbyte)0, result);
Assert.IsInstanceOfType(result, typeof(SByte));
// Test conversion of source type value 42 to target type
source = (ushort)42;
Assert.IsInstanceOfType(source, typeof(UInt16));
result = source.ToSByteNullable();
Assert.AreEqual((sbyte)42, result);
Assert.IsInstanceOfType(result, typeof(SByte));
// Test conversion of source type maximum value
source = UInt16.MaxValue;
Assert.IsInstanceOfType(source, typeof(UInt16));
result = source.ToSByteNullable();
// Here we would expect this conversion to fail (and return null),
// since the source type's maximum value (65535) is greater than the target type's maximum value (127).
Assert.IsNull(result);
}
/// <summary>
/// Converts this UInt16 to SByte or returns the specified default value
/// </summary>
/// <returns>This UInt16 converted to SByte</returns>
/// <remarks>
/// Source type: UInt16
/// Min value: 0
/// Max value: 65535
///
/// Target type: SByte
/// Min value: -128
/// Max value: 127
/// </remarks>
public static SByte ToSByteOrDefault(this UInt16 thisUInt16, SByte defaultValue = default(SByte))
{
return(thisUInt16.ToSByteNullable().GetValueOrDefault(defaultValue));
}