public MFTestResults FileAccess_ReadWrite()
{
// Clean up incase file exists
if (File.Exists(fileName))
{
File.Delete(fileName);
}
MFTestResults result = MFTestResults.Pass;
try
{
// From MSDN:
// Write access to the file. Data can be written to the file.
// Combine with Read for read/write access.
Log.Comment("Create file for testing");
using (FileStream fs = new FileStream(fileName, FileMode.CreateNew))
{
FileStreamHelper.WriteReadEmpty(fs);
}
using (FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.ReadWrite))
{
Log.Comment("Should be able to write");
if (!FileStreamHelper.Write(fs, 1000))
{
result = MFTestResults.Fail;
}
Log.Comment("Should be able to read");
fs.Seek(0, SeekOrigin.Begin);
if (!FileStreamHelper.VerifyRead(fs))
{
result = MFTestResults.Fail;
}
Log.Comment("Write after read");
fs.Seek(0, SeekOrigin.End);
if (!FileStreamHelper.Write(fs, 500))
{
result = MFTestResults.Fail;
}
}
// 300 bytes original + 1000 bytes + 500 bytes
if (!FileStreamHelper.VerifyFile(fileName, 1800))
{
result = MFTestResults.Fail;
}
}
catch (Exception ex)
{
Log.Exception("Unexpected exception: " + ex.Message);
result = MFTestResults.Fail;
}
return(result);
}
public MFTestResults FileAccess_Read()
{
// Clean up incase file exists
if (File.Exists(fileName))
{
File.Delete(fileName);
}
MFTestResults result = MFTestResults.Pass;
try
{
// From MSDN:
// Read access to the file. Data can be read from the file.
// Combine with Write for read/write access.
Log.Comment("Create file for testing");
using (FileStream fs = new FileStream(fileName, FileMode.CreateNew))
{
FileStreamHelper.WriteReadEmpty(fs);
}
using (FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read))
{
Log.Comment("Should be able to read");
if (!FileStreamHelper.VerifyRead(fs))
{
result = MFTestResults.Fail;
}
Log.Comment("Shouldn't be able to write");
try
{
fs.Write(new byte[] { 1, 2, 3 }, 0, 3);
result = MFTestResults.Fail;
Log.Exception("Expected NotSupportedException");
}
catch (NotSupportedException) { /* pass case */ }
}
}
catch (Exception ex)
{
Log.Exception("Unexpected exception: " + ex.Message);
result = MFTestResults.Fail;
}
return(result);
}
public MFTestResults Flush_Write()
{
Log.Comment("This test case requires the previous test case to write a properly formatted 5k file");
if (!FileStreamHelper.VerifyFile(sourceFile, 5000))
{
return(MFTestResults.Skip);
}
MFTestResults result = MFTestResults.Pass;
try
{
// read bytes from source file
byte[] data = File.ReadAllBytes(sourceFile);
using (FileStream fs = new FileStream(fileName, FileMode.CreateNew))
{
fs.Write(data, 0, data.Length);
fs.Flush();
if (fs.Length != 5000)
{
result = MFTestResults.Fail;
Log.Comment("Expected 5000 bytes in file");
}
fs.Seek(0, SeekOrigin.Begin);
if (!FileStreamHelper.VerifyRead(fs))
{
result = MFTestResults.Fail;
}
}
}
catch (Exception ex)
{
Log.Exception("Unexpected exception: " + ex.Message);
result = MFTestResults.Fail;
}
return(result);
}
public MFTestResults Flush_WriteByte()
{
// Clean up incase file exists
if (File.Exists(fileName))
{
File.Delete(fileName);
}
MFTestResults result = MFTestResults.Pass;
try
{
Log.Comment("Verify flush of 5000k using WriteByte");
using (FileStream fs = new FileStream(sourceFile, FileMode.CreateNew))
{
FileStreamHelper.Write(fs, 5000);
fs.Flush();
if (fs.Length != 5000)
{
result = MFTestResults.Fail;
Log.Comment("Expected 5000 bytes in file");
}
fs.Seek(0, SeekOrigin.Begin);
if (!FileStreamHelper.VerifyRead(fs))
{
result = MFTestResults.Fail;
}
}
}
catch (Exception ex)
{
Log.Exception("Unexpected exception: " + ex.Message);
result = MFTestResults.Fail;
}
return(result);
}
public MFTestResults FileShare_Write()
{
// Clean up incase file exists
if (File.Exists(fileName))
{
File.Delete(fileName);
}
MFTestResults result = MFTestResults.Pass;
try
{
// From MSDN:
// Allows subsequent opening of the file for writing. If this flag
// is not specified, any request to open the file for writing (by
// this process or another process) will fail until the file is
// closed. However, even if this flag is specified, additional
// permissions might still be needed to access the file.
// 300 bytes
Log.Comment("Create file for testing");
using (FileStream fs = new FileStream(fileName, FileMode.CreateNew))
{
FileStreamHelper.WriteReadEmpty(fs);
}
using (FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.ReadWrite, FileShare.Write))
{
// 1000 bytes
Log.Comment("Should be able to write");
if (!FileStreamHelper.Write(fs, 1000))
{
result = MFTestResults.Fail;
}
Log.Comment("Should be able to read");
fs.Seek(0, SeekOrigin.Begin);
if (!FileStreamHelper.VerifyRead(fs))
{
result = MFTestResults.Fail;
}
Log.Comment("Try to Read in same thread");
try
{
using (FileStream fs2 = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)) { }
result = MFTestResults.Fail;
Log.Exception("FileAccess.Read - Expected IOException");
}
catch (IOException) { /* pass case */ }
Log.Comment("Try to Read in another thread");
restricted = true;
threadResult = true;
Thread worker = new Thread(OpenRead);
worker.Start();
worker.Join();
if (!threadResult)
{
result = MFTestResults.Fail;
}
// 500 bytes
Log.Comment("Try to Write in same thread");
using (FileStream fs2 = new FileStream(fileName, FileMode.Open, FileAccess.Write, FileShare.ReadWrite))
{
FileStreamHelper.Write(fs2, 500);
}
// 200 bytes
Log.Comment("Try to Write in another thread");
restricted = false;
threadResult = true;
worker = new Thread(OpenWrite);
worker.Start();
worker.Join();
if (!threadResult)
{
result = MFTestResults.Fail;
}
// 500 bytes
Log.Comment("Write after read other access attempt");
fs.Seek(0, SeekOrigin.End);
if (!FileStreamHelper.Write(fs, 500))
{
result = MFTestResults.Fail;
}
}
// 300 + 1000 + 500 + 200 500 = 2500
Log.Comment("Verify file after close");
if (!FileStreamHelper.VerifyFile(fileName, 2500))
{
result = MFTestResults.Fail;
}
}
catch (Exception ex)
{
Log.Exception("Unexpected exception: " + ex.Message);
result = MFTestResults.Fail;
}
return(result);
}
public MFTestResults FileShare_Read()
{
// Clean up incase file exists
if (File.Exists(fileName))
{
File.Delete(fileName);
}
MFTestResults result = MFTestResults.Pass;
try
{
// From MSDN:
// Declines sharing of the current file. Any request to open the file
// (by this process or another process) will fail until the file is closed.
Log.Comment("Create file for testing");
using (FileStream fs = new FileStream(fileName, FileMode.CreateNew))
{
FileStreamHelper.WriteReadEmpty(fs);
}
using (FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.ReadWrite, FileShare.Read))
{
Log.Comment("Should be able to write");
if (!FileStreamHelper.Write(fs, 1000))
{
result = MFTestResults.Fail;
}
Log.Comment("Should be able to read");
fs.Seek(0, SeekOrigin.Begin);
if (!FileStreamHelper.VerifyRead(fs))
{
result = MFTestResults.Fail;
}
Log.Comment("Try to Read in same thread");
if (!FileStreamHelper.VerifyFile(fileName))
{
result = MFTestResults.Fail;
}
Log.Comment("Try to Read in another thread");
restricted = false;
threadResult = true;
Thread worker = new Thread(OpenRead);
worker.Start();
worker.Join();
if (!threadResult)
{
result = MFTestResults.Fail;
}
Log.Comment("Try to Write in same thread");
try
{
using (FileStream fs2 = new FileStream(fileName, FileMode.Open, FileAccess.Write, FileShare.ReadWrite)) { }
result = MFTestResults.Fail;
Log.Exception("Expected IOException");
}
catch (IOException) { /* pass case */ }
Log.Comment("Try to Write in another thread");
restricted = true;
threadResult = true;
worker = new Thread(OpenWrite);
worker.Start();
worker.Join();
if (!threadResult)
{
result = MFTestResults.Fail;
}
Log.Comment("Write after read other access attempt");
fs.Seek(0, SeekOrigin.End);
if (!FileStreamHelper.Write(fs, 500))
{
result = MFTestResults.Fail;
}
}
Log.Comment("Verify file after close - 300 bytes original + 1000 bytes + 500 bytes");
if (!FileStreamHelper.VerifyFile(fileName, 1800))
{
result = MFTestResults.Fail;
}
}
catch (Exception ex)
{
Log.Exception("Unexpected exception: " + ex.Message);
result = MFTestResults.Fail;
}
return(result);
}
public MFTestResults VanillaWrite()
{
if (File.Exists(fileName))
{
File.Delete(fileName);
}
MFTestResults result = MFTestResults.Pass;
try
{
using (FileStream fs = new FileStream(fileName, FileMode.CreateNew))
{
Log.Comment("Write 256 bytes of data");
if (!TestWrite(fs, 256))
{
result = MFTestResults.Fail;
}
Log.Comment("Write middle of buffer");
if (!TestWrite(fs, 256, 100, 100))
{
result = MFTestResults.Fail;
}
// 1000 - 256 - 100 = 644
Log.Comment("Write start of buffer");
if (!TestWrite(fs, 1000, 644, 0))
{
result = MFTestResults.Fail;
}
Log.Comment("Write end of buffer");
if (!TestWrite(fs, 1000, 900, 100))
{
result = MFTestResults.Fail;
}
Log.Comment("Rewind and verify all bytes written");
fs.Seek(0, SeekOrigin.Begin);
if (!FileStreamHelper.VerifyRead(fs))
{
result = MFTestResults.Fail;
}
Log.Comment("Verify Read validation with UTF8 string");
fs.SetLength(0);
string test = "MFFramework Test";
fs.Write(UTF8Encoding.UTF8.GetBytes(test), 0, test.Length);
fs.Flush();
fs.Seek(0, SeekOrigin.Begin);
byte[] readbuff = new byte[20];
fs.Read(readbuff, 0, readbuff.Length);
string testResult = new string(Encoding.UTF8.GetChars(readbuff));
if (test != testResult)
{
result = MFTestResults.Fail;
Log.Comment("Exepected: " + test + ", but got: " + testResult);
}
}
}
catch (Exception ex)
{
Log.Exception("Unexpected exception: " + ex.Message);
result = MFTestResults.Fail;
}
return(result);
}