public void GetPathToNameTest()
{
string fileName = "GetPathToNameTest";
string path = FileWithHeader.GetPathToName(fileName);
DirectoryInfo dirInfo = Directory.GetParent(path);
Assert.IsTrue(dirInfo.Exists);
}
private static void GetPutTestAssert(byte expectedValue, int expectedIndex, FileWithHeader target)
{
int nextIndexBefore = target.GetNextIndex();
target.Put(expectedIndex, expectedValue);
if (expectedIndex >= nextIndexBefore)
{
Assert.AreEqual(expectedIndex + 1, target.GetNextIndex());
}
Assert.AreEqual(expectedValue, target.Get(expectedIndex));
}
private static void GetPutArrayTestAssert(FileWithHeader fwh, int index, byte[] data)
{
int nextIndexBefore = fwh.GetNextIndex();
fwh.Put(index, data);
if (index + data.Length >= nextIndexBefore)
{
Assert.AreEqual(index + data.Length, fwh.GetNextIndex());
}
byte[] actual = fwh.GetAmount(index, data.Length);
TestHelper.AssertByteArraysAreSame(data, actual);
}
public PersistentNextSpaceArray(String arrayName, int elementSize, int userHeaderSize)
{
if (elementSize <= 0)
{
throw new InvalidElementSizeException("The element size must be greater than zero");
}
if (userHeaderSize < 0)
{
throw new InvalidUserHeaderException("User Header size must be positive");
}
_fileWithHeader = new FileWithHeader(arrayName, userHeaderSize + GetElementSizeSize());
PutElementSize(elementSize);
PutUserHeader(new byte[0]);
}
private void GetUserHeaderSizeTestAssert(int expected)
{
FileWithHeader target = InitFWH("GetFWHUserHeaderSizeTest", expected);
try
{
int actual = target.GetUserHeaderSize();
Assert.AreEqual(expected, actual);
}
finally
{
target.Close();
}
}
public void CloseTest()
{
FileWithHeader fwh = InitFWH("FWHCloseTest", 5);
try
{
fwh.Close();
fwh = InitFWH("FWHCloseTest", 3);
}
finally
{
fwh.Close();
}
}
private void GetNextIndexTestAssert(int expected)
{
FileWithHeader target = InitFWH("GetFWHNextIndexTest", 16);
try
{
target.Put(expected - 1, 0);
int actual = target.GetNextIndex();
Assert.AreEqual(expected, actual);
}
finally
{
target.Close();
}
}
private void GetPutUserHeaderTest(byte[] uHeader)
{
FileWithHeader target = InitFWH("GetPutUserHeaderTest", 16);
try
{
target.PutUserHeader(uHeader);
byte[] actual = target.GetUserHeader();
TestHelper.AssertByteArraysAreSame(uHeader, actual);
}
finally
{
target.Close();
}
}
public FileWithHeader InitFWH(string fileName, int userHeaderSize)
{
FileWithHeader fwh;
try
{
fwh = new FileWithHeader(fileName, userHeaderSize);
}
catch (FileNameConflictException)
{
fwh = new FileWithHeader(fileName);
fwh.Delete();
fwh = new FileWithHeader(fileName, userHeaderSize);
}
return(fwh);
}
public void GetPutTest()
{
FileWithHeader target = InitFWH("GetPutFWHTest", 5);
try
{
GetPutTestAssert(8, 44, target);
GetPutTestAssert(0, 44, target);
GetPutTestAssert(99, 0, target);
GetPutTestAssert(20, byte.MaxValue, target);
GetPutTestAssert(4, 4, target);
}
finally
{
target.Close();
}
}
public void GetRangeTest()
{
FileWithHeader fwh = InitFWH("FWHGetRangeTest", 5);
try
{
GetRangeTestAssert(new byte[] { 1, 2, 3, 4 }, 0, fwh);
GetRangeTestAssert(new byte[] { }, 6, fwh);
GetRangeTestAssert(new byte[] { 0 }, 8, fwh);
GetRangeTestAssert(new byte[] { byte.MaxValue, byte.MaxValue, byte.MaxValue }, 10, fwh);
GetRangeTestAssert(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 }, 20, fwh);
}
finally
{
fwh.Close();
}
}
public void PutGetAmountTest()
{
FileWithHeader fwh = InitFWH("FWHPutGetAmountTest", 5);
try
{
GetPutArrayTestAssert(fwh, 9, new byte[] { });
GetPutArrayTestAssert(fwh, 3, new byte[] { byte.MaxValue, byte.MinValue });
GetPutArrayTestAssert(fwh, 50, new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 });
GetPutArrayTestAssert(fwh, 10, new byte[] { 7, 7, 7 });
GetPutArrayTestAssert(fwh, 30, new byte[] { 12, 34, 56, 78, 90 });
GetPutArrayTestAssert(fwh, 25, new byte[] { 0, 0, 0, 0, 0, 0, 0 });
}
finally
{
fwh.Close();
}
}
public void FileAlreadyExistsTest()
{
string fileName = "AlreadyExists";
FileWithHeader fwh = InitFWH(fileName, 5);
FileWithHeader fwh2 = null;
try
{
fwh2 = new FileWithHeader(fileName, 5);
Assert.Fail("Should throw exception");
}
catch (FileNameConflictException) { }
finally
{
fwh.Close();
if (fwh2 != null) //if for some reason it actuall worked,
{
fwh2.Close(); // still close the file
}
}
}
public void ReopenTest()
{
string fileName = "ReopenFileWithHeaderTest";
FileWithHeader fwh = InitFWH(fileName, 5);
try
{
//write values
int expectedIndex1 = 0;
byte expectedValue1 = 6;
fwh.Put(expectedIndex1, expectedValue1);
int expectedIndex2 = 55;
byte expectedValue2 = 200;
fwh.Put(expectedIndex2, expectedValue2);
//get next index
int expectedNextIndex = fwh.GetNextIndex();
byte[] expectedUserHeader = new byte[5] {
1, 2, 3, 4, 5
};
fwh.PutUserHeader(expectedUserHeader);
fwh.Close();
fwh = new FileWithHeader(fileName);
Assert.AreEqual(expectedValue1, fwh.Get(expectedIndex1));
Assert.AreEqual(expectedValue2, fwh.Get(expectedIndex2));
Assert.AreEqual(expectedNextIndex, fwh.GetNextIndex());
TestHelper.AssertByteArraysAreSame(expectedUserHeader, fwh.GetUserHeader());
}
finally
{
fwh.Close();
}
}
public PersistentNextSpaceArray(String arrayName)
{
_fileWithHeader = new FileWithHeader(arrayName);
byte[] userHeaderBytes = _fileWithHeader.GetUserHeader();
}
public PersistentHeap(String heapName)
{
_file = new FileWithHeader(heapName);
}
public PersistentHeap(String heapName, int userHeaderSize)
{
_file = new FileWithHeader(heapName, userHeaderSize + GetFreeSpaceHeadSize());
PutFreeSpaceHead(FreeLinkedListNullPointer);
}
private static void GetRangeTestAssert(byte[] bytes, int startIndex, FileWithHeader fwh)
{
fwh.Put(startIndex, bytes);
byte[] actual = fwh.GetRange(startIndex, startIndex + bytes.Length - 1);
TestHelper.AssertByteArraysAreSame(bytes, actual);
}
