/// <summary>
/// Compares two <see cref="IRowViewModelBase{Thing}"/>
/// </summary>
/// <param name="x">The first <see cref="IRowViewModelBase{Thing}"/> to compare</param>
/// <param name="y">The second <see cref="IRowViewModelBase{Thing}"/> to compare</param>
/// <returns>
/// Less than zero : x is "lower" than y
/// Zero: x "equals" y.
/// Greater than zero: x is "greater" than y.
/// </returns>
public int Compare(IRowViewModelBase <Thing> x, IRowViewModelBase <Thing> y)
{
if (!(x.Thing is ElementDefinition) || !(y.Thing is ElementDefinition))
{
throw new InvalidOperationException("one or both of the parameters is not an Element Definition row.");
}
return(comparer.Compare((ElementDefinition)x.Thing, (ElementDefinition)y.Thing));
}
public void TestComparer()
{
var usage1 = new ElementDefinition {
Name = "type1"
};
var usage2 = new ElementDefinition {
Name = "type5"
};
var comparer = new ElementDefinitionComparer();
Assert.AreEqual(-4, comparer.Compare(usage1, usage2));
}