private void DisplayDifferences(MessageWriter writer, object expected, object actual, int depth)
{
if (expected is string && actual is string)
{
DisplayStringDifferences(writer, (string)expected, (string)actual);
}
else if (expected is ICollection && actual is ICollection)
{
DisplayCollectionDifferences(writer, (ICollection)expected, (ICollection)actual, depth);
}
else if (expected is Stream && actual is Stream)
{
DisplayStreamDifferences(writer, (Stream)expected, (Stream)actual, depth);
}
else if (comparer.Tolerance != null)
{
writer.DisplayDifferences(expected, actual, comparer.Tolerance);
}
else
{
writer.DisplayDifferences(expected, actual);
}
}
/// <summary>
/// Write the failure message to the MessageWriter provided
/// as an argument. The default implementation simply passes
/// the constraint and the actual value to the writer, which
/// then displays the constraint description and the value.
///
/// Constraints that need to provide additional details,
/// such as where the error occured can override this.
/// </summary>
/// <param name="writer">The MessageWriter on which to display the message</param>
public virtual void WriteMessageTo(MessageWriter writer)
{
writer.DisplayDifferences(this);
}