public void FixedSizeItemsPage() { int pageSize = 32768; var dummyPageManager = new FileSystemPageManager(pageSize); var p = new Page(dummyPageManager, 0, new byte[pageSize]); var header = new FixedSizeItemsPageHeader(); var r = new Random(); foreach (var sizeRange in EnumHelper.FixedSizeItemsSizeRanges()) { header.SizeRange = sizeRange; PageFormatter.InitPage(p, header); var item = new DbItem(new byte[DbItem.GetMaxSize(header.SizeRange)]); r.NextBytes(item.RawData); // fill the page with the items short count = 0; bool spaceRemains = true; while (PageFormatter.HasFreeSpaceForFixedSizeItem(p)) { Assert.IsTrue(spaceRemains); PageFormatter.AddFixedSizeItem(p, item, out spaceRemains); count++; Assert.AreEqual(count, PageFormatter.ReadFixedSizeItemsCount(p)); } Assert.IsFalse(spaceRemains); // check if fetched objects are equal to originals for (short j = 0; j < PageFormatter.ReadFixedSizeItemsCount(p); j++) { DbItem readItem = PageFormatter.ReadFixedSizeItem(p, j); Assert.IsTrue(AreEqualByteArrays(item.RawData, readItem.RawData)); } // delete all added items short itemindex = 0; while (PageFormatter.ReadFixedSizeItemsCount(p) > 0) { PageFormatter.DeleteFixedSizeItem(p, itemindex); count--; itemindex++; Assert.AreEqual(count, PageFormatter.ReadFixedSizeItemsCount(p)); } } }