public void ReadBytePastEndOfStream ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
using (StdioFileStream stream = new StdioFileStream (path, FileMode.OpenOrCreate, FileAccess.Read)) {
stream.Seek (0, SeekOrigin.End);
Assert.AreEqual (-1, stream.ReadByte (), "ReadByte");
stream.Close ();
}
}
public void Seek_Disposed ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
StdioFileStream stream = new StdioFileStream (path, FileMode.OpenOrCreate, FileAccess.Write);
stream.Close ();
stream.Seek (0, SeekOrigin.Begin);
}
public void Seek_InvalidSeekOrigin ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
using (StdioFileStream stream = new StdioFileStream (path, FileMode.OpenOrCreate, FileAccess.Read)) {
stream.Seek (0, (SeekOrigin) (-1));
}
}
public void TestSeek ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "TestSeek";
DeleteFile (path);
StdioFileStream stream = new StdioFileStream (path, FileMode.CreateNew, FileAccess.ReadWrite);
stream.Write (new byte[] {1, 2, 3, 4, 5, 6, 7, 8 , 9, 10}, 0, 10);
stream.Seek (5, SeekOrigin.End);
Assert.AreEqual (-1, stream.ReadByte (), "test#01");
stream.Seek (-5, SeekOrigin.End);
Assert.AreEqual (6, stream.ReadByte (), "test#02");
try {
stream.Seek (-11, SeekOrigin.End);
Assert.Fail ();
} catch (Exception e) {
Assert.AreEqual (typeof (IOException), e.GetType (), "test#03");
}
stream.Seek (19, SeekOrigin.Begin);
Assert.AreEqual (-1, stream.ReadByte (), "test#04");
stream.Seek (1, SeekOrigin.Begin);
Assert.AreEqual (2, stream.ReadByte (), "test#05");
stream.Seek (3, SeekOrigin.Current);
Assert.AreEqual (6, stream.ReadByte (), "test#06");
stream.Seek (-2, SeekOrigin.Current);
Assert.AreEqual (5, stream.ReadByte (), "test#07");
stream.Flush ();
// Test that seeks work correctly when seeking inside the buffer
stream.Seek (0, SeekOrigin.Begin);
stream.WriteByte (0);
stream.WriteByte (1);
stream.Seek (0, SeekOrigin.Begin);
byte[] buf = new byte [1];
buf [0] = 2;
stream.Write (buf, 0, 1);
stream.Write (buf, 0, 1);
stream.Flush ();
stream.Seek (0, SeekOrigin.Begin);
Assert.AreEqual (2, stream.ReadByte (), "test#08");
Assert.AreEqual (2, stream.ReadByte (), "test#09");
stream.Close ();
DeleteFile (path);
}
public void Seek ()
{
string path = TempFolder + DSC + "FST.Seek.Test";
DeleteFile (path);
StdioFileStream stream = new StdioFileStream (path, FileMode.CreateNew, FileAccess.ReadWrite);
StdioFileStream stream2 = new StdioFileStream (path, FileMode.Open, FileAccess.ReadWrite);
stream.Write (new byte [] {1, 2, 3, 4, 5, 6, 7, 8, 10}, 0, 9);
Assert.AreEqual (5, stream2.Seek (5, SeekOrigin.Begin), "test#01");
Assert.AreEqual (-1, stream2.ReadByte (), "test#02");
Assert.AreEqual (2, stream2.Seek (-3, SeekOrigin.Current), "test#03");
Assert.AreEqual (-1, stream2.ReadByte (), "test#04");
Assert.AreEqual (12, stream.Seek (3, SeekOrigin.Current), "test#05");
Assert.AreEqual (-1, stream.ReadByte (), "test#06");
Assert.AreEqual (5, stream.Seek (-7, SeekOrigin.Current), "test#07");
Assert.AreEqual (6, stream.ReadByte (), "test#08");
Assert.AreEqual (5, stream2.Seek (5, SeekOrigin.Begin), "test#09");
Assert.AreEqual (6, stream2.ReadByte (), "test#10");
stream.Close ();
stream2.Close ();
DeleteFile (path);
}
public void Write ()
{
string path = TempFolder + DSC + "StdioFileStreamTest.Write";
DeleteFile (path);
StdioFileStream stream = new StdioFileStream (path, FileMode.CreateNew, FileAccess.ReadWrite);
byte[] outbytes = new byte [] {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16};
byte[] bytes = new byte [15];
// Check that the data is flushed when we overflow the buffer
// with a large amount of data
stream.Write (outbytes, 0, 5);
stream.Write (outbytes, 5, 10);
stream.Seek (0, SeekOrigin.Begin);
stream.Read (bytes, 0, 15);
for (int i = 0; i < 15; ++i)
Assert.AreEqual (i + 1, bytes [i]);
// Check that the data is flushed when we overflow the buffer
// with a small amount of data
stream.Write (outbytes, 0, 7);
stream.Write (outbytes, 7, 7);
stream.Write (outbytes, 14, 1);
stream.Seek (15, SeekOrigin.Begin);
Array.Clear (bytes, 0, bytes.Length);
stream.Read (bytes, 0, 15);
for (int i = 0; i < 15; ++i)
Assert.AreEqual (i + 1, bytes [i]);
stream.Close ();
}