public virtual void TestFailToRename()
{
Assume.AssumeTrue(Shell.Windows);
OutputStream fos = null;
try
{
fos = new AtomicFileOutputStream(DstFile);
fos.Write(Sharpen.Runtime.GetBytesForString(TestString));
FileUtil.SetWritable(TestDir, false);
exception.Expect(typeof(IOException));
exception.ExpectMessage("failure in native rename");
try
{
fos.Close();
}
finally
{
fos = null;
}
}
finally
{
IOUtils.Cleanup(null, fos);
FileUtil.SetWritable(TestDir, true);
}
}
/// <exception cref="System.IO.IOException"/>
private static void SaveMD5File(FilePath dataFile, string digestString)
{
FilePath md5File = GetDigestFileForFile(dataFile);
string md5Line = digestString + " *" + dataFile.GetName() + "\n";
AtomicFileOutputStream afos = new AtomicFileOutputStream(md5File);
afos.Write(Sharpen.Runtime.GetBytesForString(md5Line, Charsets.Utf8));
afos.Close();
if (Log.IsDebugEnabled())
{
Log.Debug("Saved MD5 " + digestString + " to " + md5File);
}
}
public virtual void TestWriteNewFile()
{
OutputStream fos = new AtomicFileOutputStream(DstFile);
NUnit.Framework.Assert.IsFalse(DstFile.Exists());
fos.Write(Sharpen.Runtime.GetBytesForString(TestString));
fos.Flush();
NUnit.Framework.Assert.IsFalse(DstFile.Exists());
fos.Close();
NUnit.Framework.Assert.IsTrue(DstFile.Exists());
string readBackData = DFSTestUtil.ReadFile(DstFile);
NUnit.Framework.Assert.AreEqual(TestString, readBackData);
}
public virtual void TestOverwriteFile()
{
NUnit.Framework.Assert.IsTrue("Creating empty dst file", DstFile.CreateNewFile());
OutputStream fos = new AtomicFileOutputStream(DstFile);
NUnit.Framework.Assert.IsTrue("Empty file still exists", DstFile.Exists());
fos.Write(Sharpen.Runtime.GetBytesForString(TestString));
fos.Flush();
// Original contents still in place
NUnit.Framework.Assert.AreEqual(string.Empty, DFSTestUtil.ReadFile(DstFile));
fos.Close();
// New contents replace original file
string readBackData = DFSTestUtil.ReadFile(DstFile);
NUnit.Framework.Assert.AreEqual(TestString, readBackData);
}
/// <summary>Atomically write the given value to the given file, including fsyncing.</summary>
/// <param name="file">destination file</param>
/// <param name="val">value to write</param>
/// <exception cref="System.IO.IOException">if the file cannot be written</exception>
public static void WriteFile(FilePath file, long val)
{
AtomicFileOutputStream fos = new AtomicFileOutputStream(file);
try
{
fos.Write(Sharpen.Runtime.GetBytesForString(val.ToString(), Charsets.Utf8));
fos.Write('\n');
fos.Close();
fos = null;
}
finally
{
if (fos != null)
{
fos.Abort();
}
}
}