public void OnEmptyStorageShouldReturnMinusOneForRequestedFreePageIndex()
{
var manager = new FileSystemPageManager(4096);
using (var storage = new Storage(manager))
{
storage.CreateNew(StoragePath);
var fsm = new FreeSpaceMap(manager);
foreach (var fsmValue in EnumHelper.FixedSizeItemsFsmValues())
{
Assert.AreEqual(-1, fsm.GetFreePageIndex(fsmValue));
}
}
}
public void MultiPageOperations()
{
var manager = new FileSystemPageManager(4096);
using (var storage = new Storage(manager))
{
storage.CreateNew(StoragePath);
var fsm = new FreeSpaceMap(manager);
int entryPerPage = PageFormatter.GetFsmEntryCount(manager.FetchPage(1));
int entryCount = entryPerPage * 3;
// check writing to the last page
var value = FsmValue.Class0;
var index = entryCount - 1;
fsm.Set(index, value);
Assert.AreEqual(value, fsm.Get(index));
// middle page
value = FsmValue.Class1;
index = entryPerPage + 1;
fsm.Set(index, value);
Assert.AreEqual(value, fsm.Get(index));
// the first page
value = FsmValue.Class2;
index = entryPerPage - 1;
fsm.Set(index, value);
Assert.AreEqual(value, fsm.Get(index));
for (int i = 0; i < entryCount; i++)
{
fsm.Set(i, FsmValue.Class3);
}
for (int i = 0; i < entryCount; i++)
{
long pageIndex = fsm.GetFreePageIndex(FsmValue.Class3);
Assert.AreNotEqual(-1, pageIndex);
fsm.Set(i, FsmValue.Full);
}
}
}