public void ShouldConvertToArray()
{
// arrange
var target = new ObservableQueue<string>();
var expected = new[] { "1", "2", "3" };
target.Enqueue( "1" );
target.Enqueue( "2" );
target.Enqueue( "3" );
// act
var actual = target.ToArray();
// assert
Assert.True( expected.SequenceEqual( actual ) );
}