void CheckEquality( ValueStore sut, object value, string secondKey, Guid id, int number )
{
Assert.Empty( sut );
var key = id.ToString();
var composite = new Registration( key, value, secondKey );
sut.Add( composite );
sut.Add( new Registration( "asdfasdf", number ) );
var first = sut.Get( key );
Assert.NotNull( first );
Assert.Same( first, value );
var second = sut.Get( secondKey );
Assert.NotNull( second );
Assert.Same( second, value );
Assert.Same( first, second );
var third = sut.Get( "asdfasdf" );
Assert.Equal( number, third );
}
