// FileStreamTests.cs - NUnit2 Test Cases for System.IO.FileStream class
//
// Authors:
// Ville Palo (vi64pa@koti.soon.fi)
// Gert Driesen (gert.driesen@ardatis.com)
// Gonzalo Paniagua Javier (gonzalo@ximian.com)
//
// (C) Ville Palo
// (c) 2003 Ximian, Inc. (http://www.ximian.com)
//
using NUnit.Framework;
using System;
using System.IO;
using System.Text;
namespace MonoTests.System.IO
{
[TestFixture]
public class FileStreamTest : Assertion
{
string TempFolder = Path.Combine (Path.GetTempPath (), "MonoTests.System.IO.Tests");
static readonly char DSC = Path.DirectorySeparatorChar;
[TearDown]
public void TearDown()
{
if (Directory.Exists (TempFolder))
Directory.Delete (TempFolder, true);
}
[SetUp]
public void SetUp ()
{
if (Directory.Exists (TempFolder))
Directory.Delete (TempFolder, true);
Directory.CreateDirectory (TempFolder);
}
public void TestCtr ()
{
string path = TempFolder + DSC + "testfilestream.tmp.1";
DeleteFile (path);
FileStream stream = null;
try {
stream = new FileStream (path, FileMode.Create);
} finally {
if (stream != null)
stream.Close ();
DeleteFile (path);
}
}
[Test]
[ExpectedException (typeof (ArgumentException))]
public void CtorArgumentException1 ()
{
FileStream stream;
stream = new FileStream ("", FileMode.Create);
stream.Close ();
}
[Test]
[ExpectedException (typeof (ArgumentNullException))]
public void CtorArgumentNullException ()
{
FileStream stream = new FileStream (null, FileMode.Create);
stream.Close ();
}
[Test]
[ExpectedException (typeof (FileNotFoundException))]
public void CtorFileNotFoundException1 ()
{
string path = TempFolder + DSC + "thisfileshouldnotexists.test";
DeleteFile (path);
FileStream stream = null;
try {
stream = new FileStream (TempFolder + DSC + "thisfileshouldnotexists.test", FileMode.Open);
} finally {
if (stream != null)
stream.Close ();
DeleteFile (path);
}
}
[Test]
[ExpectedException (typeof (FileNotFoundException))]
public void CtorFileNotFoundException2 ()
{
string path = TempFolder + DSC + "thisfileshouldNOTexists.test";
DeleteFile (path);
FileStream stream = null;
try {
stream = new FileStream (TempFolder + DSC + "thisfileshouldNOTexists.test", FileMode.Truncate);
} finally {
if (stream != null)
stream.Close ();
DeleteFile (path);
}
}
[Test]
[ExpectedException (typeof (IOException))]
public void CtorIOException1 ()
{
string path = TempFolder + DSC + "thisfileshouldexists.test";
FileStream stream = null;
DeleteFile (path);
try {
stream = new FileStream (path, FileMode.CreateNew);
stream.Close ();
stream = null;
stream = new FileStream (path, FileMode.CreateNew);
} finally {
if (stream != null)
stream.Close ();
DeleteFile (path);
}
}
[Test]
[ExpectedException (typeof (ArgumentOutOfRangeException))]
public void CtorArgumentOutOfRangeException1 ()
{
FileStream stream = null;
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
try {
stream = new FileStream (path, FileMode.Append | FileMode.CreateNew);
} finally {
if (stream != null)
stream.Close ();
DeleteFile (path);
}
}
[Test]
[ExpectedException (typeof (ArgumentOutOfRangeException))]
public void CtorArgumentOutOfRangeException2 ()
{
FileStream stream = null;
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
try {
stream = new FileStream ("test.test.test", FileMode.Append | FileMode.Open);
} finally {
if (stream != null)
stream.Close ();
DeleteFile (path);
}
}
private void CtorDirectoryNotFoundException (FileMode mode)
{
string path = TempFolder + DSC + "thisDirectoryShouldNotExists";
if (Directory.Exists (path))
Directory.Delete (path, true);
FileStream stream = null;
try {
stream = new FileStream (path + DSC + "eitherthisfile.test", mode);
} finally {
if (stream != null)
stream.Close ();
if (Directory.Exists (path))
Directory.Delete (path, true);
}
}
[Test]
[ExpectedException (typeof (DirectoryNotFoundException))]
public void CtorDirectoryNotFoundException_CreateNew ()
{
CtorDirectoryNotFoundException (FileMode.CreateNew);
}
[Test]
[ExpectedException (typeof (DirectoryNotFoundException))]
public void CtorDirectoryNotFoundException_Create ()
{
CtorDirectoryNotFoundException (FileMode.Create);
}
[Test]
[ExpectedException (typeof (DirectoryNotFoundException))]
public void CtorDirectoryNotFoundException_Open ()
{
CtorDirectoryNotFoundException (FileMode.Open);
}
[Test]
[ExpectedException (typeof (DirectoryNotFoundException))]
public void CtorDirectoryNotFoundException_OpenOrCreate ()
{
CtorDirectoryNotFoundException (FileMode.OpenOrCreate);
}
[Test]
[ExpectedException (typeof (DirectoryNotFoundException))]
public void CtorDirectoryNotFoundException_Truncate ()
{
CtorDirectoryNotFoundException (FileMode.Truncate);
}
[Test]
[ExpectedException (typeof (DirectoryNotFoundException))]
public void CtorDirectoryNotFoundException_Append ()
{
CtorDirectoryNotFoundException (FileMode.Append);
}
[Test]
[ExpectedException (typeof (ArgumentOutOfRangeException))]
public void CtorArgumentOutOfRangeException3 ()
{
string path = TempFolder + DSC + "CtorArgumentOutOfRangeException1";
DeleteFile (path);
FileStream stream = null;
try {
stream = new FileStream (path, FileMode.CreateNew, FileAccess.Read, FileShare.None | FileShare.Inheritable);
} finally {
if (stream != null)
stream.Close ();
DeleteFile (path);
}
}
[Test]
[ExpectedException (typeof (ArgumentOutOfRangeException))]
public void CtorArgumentOutOfRangeException4 ()
{
string path = TempFolder + DSC + "CtorArgumentOutOfRangeException4";
DeleteFile (path);
FileStream stream = null;
try {
stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Read, FileShare.ReadWrite, -1);
} finally {
if (stream != null)
stream.Close ();
DeleteFile (path);
}
}
[Test]
[ExpectedException (typeof (ArgumentOutOfRangeException))]
public void CtorBufferSizeZero ()
{
// Buffer size can't be zero
string path = Path.Combine (TempFolder, "CtorBufferSizeZero");
DeleteFile (path);
FileStream stream = null;
try {
stream = new FileStream (path, FileMode.CreateNew, FileAccess.Write, FileShare.ReadWrite, 0);
} finally {
if (stream != null)
stream.Close ();
DeleteFile (path);
}
}
[Test]
[ExpectedException (typeof (ArgumentException))]
public void CtorArgumentException2 ()
{
// FileMode.CreateNew && FileAccess.Read
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
FileStream stream = null;
DeleteFile (path);
try {
stream = new FileStream (".test.test.test.2", FileMode.CreateNew, FileAccess.Read, FileShare.None | FileShare.Write);
} finally {
if (stream != null)
stream.Close ();
DeleteFile (path);
}
}
[Test]
[ExpectedException (typeof (ArgumentOutOfRangeException))]
public void CtorArgumentOutOfRangeException5 ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
FileStream stream = null;
try {
stream = new FileStream (path, FileMode.CreateNew, FileAccess.Read, FileShare.Inheritable | FileShare.ReadWrite);
} finally {
if (stream != null)
stream.Close ();
DeleteFile (path);
}
}
[Test]
[ExpectedException (typeof (ArgumentException))]
public void CtorArgumentException3 ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
FileStream stream = null;
DeleteFile (path);
try {
stream = new FileStream (".test.test.test.2", FileMode.Truncate, FileAccess.Read);
} finally {
if (stream != null)
stream.Close ();
DeleteFile (path);
}
}
[Test, ExpectedException (typeof (IOException))]
public void CtorIOException2 ()
{
FileStream stream = null;
try {
stream = new FileStream (new IntPtr (Int32.MaxValue), FileAccess.Read);
} finally {
if (stream != null)
stream.Close ();
}
}
[Test, ExpectedException(typeof(IOException))]
public void CtorIOException ()
{
string path = TempFolder + DSC + "CTorIOException.Test";
FileStream stream = null;
FileStream stream2 = null;
DeleteFile (path);
try {
stream = new FileStream (path, FileMode.CreateNew);
// used by an another process
stream2 = new FileStream (path, FileMode.OpenOrCreate);
} finally {
if (stream != null)
stream.Close ();
if (stream2 != null)
stream2.Close ();
DeleteFile (path);
}
}
[Test]
public void CtorAccess1Read2Read ()
{
FileStream fs = null;
FileStream fs2 = null;
string fn = Path.Combine (TempFolder, "temp");
try {
if (!File.Exists (fn)) {
TextWriter tw = File.CreateText (fn);
tw.Write ("FOO");
tw.Close ();
}
fs = new FileStream (fn, FileMode.Open, FileAccess.Read);
fs2 = new FileStream (fn, FileMode.Open, FileAccess.Read);
} finally {
if (fs != null)
fs.Close ();
if (fs2 != null)
fs2.Close ();
if (File.Exists (fn))
File.Delete (fn);
}
}
[Test]
[ExpectedException (typeof (IOException))]
public void CtorAccess1Read2Write ()
{
string fn = Path.Combine (TempFolder, "temp");
FileStream fs = null;
try {
if (!File.Exists (fn)) {
using (TextWriter tw = File.CreateText (fn)) {
tw.Write ("FOO");
}
}
fs = new FileStream (fn, FileMode.Open, FileAccess.Read);
fs = new FileStream (fn, FileMode.Create, FileAccess.Write);
} finally {
if (fs != null)
fs.Close ();
if (File.Exists (fn))
File.Delete (fn);
}
}
[Test]
[ExpectedException (typeof (IOException))]
public void CtorAccess1Write2Write ()
{
string fn = Path.Combine (TempFolder, "temp");
FileStream fs = null;
try {
if (File.Exists (fn))
File.Delete (fn);
fs = new FileStream (fn, FileMode.Create, FileAccess.Write);
fs = new FileStream (fn, FileMode.Create, FileAccess.Write);
} finally {
if (fs != null)
fs.Close ();
if (File.Exists (fn))
File.Delete (fn);
}
}
[Test]
[ExpectedException (typeof (UnauthorizedAccessException))]
public void CtorReadDirectoryAsFile ()
{
FileStream stream = null;
try {
stream = new FileStream (TempFolder, FileMode.Open, FileAccess.Read);
} finally {
if (stream != null)
stream.Close ();
}
}
[Test]
public void Write ()
{
string path = TempFolder + DSC + "FileStreamTest.Write";
DeleteFile (path);
FileStream stream = new FileStream (path, FileMode.CreateNew, FileAccess.ReadWrite, FileShare.ReadWrite, 8);
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)
AssertEquals (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.Read (bytes, 0, 15);
stream.Seek (15, SeekOrigin.Begin);
for (int i = 0; i < 15; ++i)
AssertEquals (i + 1, bytes [i]);
stream.Close ();
}
[Test]
public void Length ()
{
// Test that the Length property takes into account the data
// in the buffer
string path = TempFolder + DSC + "FileStreamTest.Length";
DeleteFile (path);
FileStream stream = new FileStream (path, FileMode.CreateNew);
byte[] outbytes = new byte [] {1, 2, 3, 4};
stream.Write (outbytes, 0, 4);
AssertEquals (stream.Length, 4);
stream.Close ();
}
[Test]
public void Flush ()
{
string path = TempFolder + DSC + "FileStreamTest.Flush";
FileStream stream = null;
FileStream stream2 = null;
DeleteFile (path);
try {
stream = new FileStream (path, FileMode.CreateNew, FileAccess.ReadWrite, FileShare.ReadWrite);
stream2 = new FileStream (path, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite);
stream.Write (new byte [] {1, 2, 3, 4, 5}, 0, 5);
byte [] bytes = new byte [5];
stream2.Read (bytes, 0, 5);
AssertEquals ("test#01", 0, bytes [0]);
AssertEquals ("test#02", 0, bytes [1]);
AssertEquals ("test#03", 0, bytes [2]);
AssertEquals ("test#04", 0, bytes [3]);
stream.Flush ();
stream2.Read (bytes, 0, 5);
AssertEquals ("test#05", 1, bytes [0]);
AssertEquals ("test#06", 2, bytes [1]);
AssertEquals ("test#07", 3, bytes [2]);
AssertEquals ("test#08", 4, bytes [3]);
} finally {
if (stream != null)
stream.Close ();
if (stream2 != null)
stream2.Close ();
DeleteFile (path);
}
}
public void TestDefaultProperties ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "testfilestream.tmp.2";
DeleteFile (path);
FileStream stream = new FileStream (path, FileMode.Create);
AssertEquals ("test#01", true, stream.CanRead);
AssertEquals ("test#02", true, stream.CanSeek);
AssertEquals ("test#03", true, stream.CanWrite);
AssertEquals ("test#04", false, stream.IsAsync);
AssertEquals ("test#05", true, stream.Name.EndsWith (path));
AssertEquals ("test#06", 0, stream.Position);
AssertEquals ("test#07", "System.IO.FileStream", stream.ToString());
stream.Close ();
DeleteFile (path);
stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Read);
AssertEquals ("test#08", true, stream.CanRead);
AssertEquals ("test#09", true, stream.CanSeek);
AssertEquals ("test#10", false, stream.CanWrite);
AssertEquals ("test#11", false, stream.IsAsync);
AssertEquals ("test#12", true, stream.Name.EndsWith (path));
AssertEquals ("test#13", 0, stream.Position);
AssertEquals ("test#14", "System.IO.FileStream", stream.ToString());
stream.Close ();
stream = new FileStream (path, FileMode.Truncate, FileAccess.Write, FileShare.ReadWrite);
AssertEquals ("test#15", false, stream.CanRead);
AssertEquals ("test#16", true, stream.CanSeek);
AssertEquals ("test#17", true, stream.CanWrite);
AssertEquals ("test#18", false, stream.IsAsync);
AssertEquals ("test#19", true, stream.Name.EndsWith ("testfilestream.tmp.2"));
AssertEquals ("test#20", 0, stream.Position);
AssertEquals ("test#21", "System.IO.FileStream", stream.ToString());
stream.Close ();
DeleteFile (path);
}
[Category("NotWorking")]
// Bug: 71371
public void TestLock_FailsOnMono ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "TestLock";
DeleteFile (path);
FileStream stream = new FileStream (path, FileMode.CreateNew, FileAccess.ReadWrite);
stream.Write (new Byte [] {0,1,2,3,4,5,6,7,8,9,10}, 0, 10);
stream.Close ();
stream = new FileStream (path, FileMode.Open, FileAccess.ReadWrite);
stream.Lock (0, 5);
FileStream stream2 = new FileStream (path , FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
byte [] bytes = new byte [5];
try {
stream2.Read (bytes, 0, 5);
Fail ();
} catch (Exception e) {
// locked
AssertEquals ("test#01", typeof (IOException), e.GetType ());
}
stream.Close ();
stream2.Close ();
DeleteFile (path);
}
public void TestLock()
{
string path = TempFolder + Path.DirectorySeparatorChar + "TestLock";
DeleteFile (path);
FileStream stream = new FileStream (path, FileMode.CreateNew, FileAccess.ReadWrite);
stream.Write (new Byte [] {0,1,2,3,4,5,6,7,8,9,10}, 0, 10);
stream.Close ();
stream = new FileStream (path, FileMode.Open, FileAccess.ReadWrite);
stream.Lock (0, 5);
FileStream stream2 = new FileStream (path , FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
byte [] bytes = new byte [5];
try {
stream2.Read (bytes, 0, 5);
Fail ();
} catch (Exception e) {
// locked
// AssertEquals ("test#01", typeof (IOException), e.GetType ());
//
// Moved into the previous test case.
}
stream2.Seek (5, SeekOrigin.Begin);
stream2.Read (bytes, 0, 5);
AssertEquals ("test#02", 5, bytes [0]);
AssertEquals ("test#03", 6, bytes [1]);
AssertEquals ("test#04", 7, bytes [2]);
AssertEquals ("test#05", 8, bytes [3]);
AssertEquals ("test#06", 9, bytes [4]);
stream.Unlock (0,5);
stream2.Seek (0, SeekOrigin.Begin);
stream2.Read (bytes, 0, 5);
AssertEquals ("test#02", 0, bytes [0]);
AssertEquals ("test#03", 1, bytes [1]);
AssertEquals ("test#04", 2, bytes [2]);
AssertEquals ("test#05", 3, bytes [3]);
AssertEquals ("test#06", 4, bytes [4]);
stream.Close ();
stream2.Close ();
DeleteFile (path);
}
[Test]
public void Seek ()
{
string path = TempFolder + DSC + "FST.Seek.Test";
DeleteFile (path);
FileStream stream = new FileStream (path, FileMode.CreateNew, FileAccess.ReadWrite, FileShare.ReadWrite);
FileStream stream2 = new FileStream (path, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite);
stream.Write (new byte [] {1, 2, 3, 4, 5, 6, 7, 8, 10}, 0, 9);
AssertEquals ("test#01", 5, stream2.Seek (5, SeekOrigin.Begin));
AssertEquals ("test#02", -1, stream2.ReadByte ());
AssertEquals ("test#03", 2, stream2.Seek (-3, SeekOrigin.Current));
AssertEquals ("test#04", -1, stream2.ReadByte ());
AssertEquals ("test#05", 12, stream.Seek (3, SeekOrigin.Current));
AssertEquals ("test#06", -1, stream.ReadByte ());
AssertEquals ("test#07", 5, stream.Seek (-7, SeekOrigin.Current));
AssertEquals ("test#08", 6, stream.ReadByte ());
AssertEquals ("test#09", 5, stream2.Seek (5, SeekOrigin.Begin));
AssertEquals ("test#10", 6, stream2.ReadByte ());
stream.Close ();
stream2.Close ();
DeleteFile (path);
}
public void TestSeek ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "TestSeek";
DeleteFile (path);
FileStream stream = new FileStream (path, FileMode.CreateNew, FileAccess.ReadWrite, FileShare.ReadWrite);
stream.Write (new byte[] {1, 2, 3, 4, 5, 6, 7, 8 , 9, 10}, 0, 10);
stream.Seek (5, SeekOrigin.End);
AssertEquals ("test#01", -1, stream.ReadByte ());
stream.Seek (-5, SeekOrigin.End);
AssertEquals ("test#02", 6, stream.ReadByte ());
try {
stream.Seek (-11, SeekOrigin.End);
Fail ();
} catch (Exception e) {
AssertEquals ("test#03", typeof (IOException), e.GetType ());
}
stream.Seek (19, SeekOrigin.Begin);
AssertEquals ("test#04", -1, stream.ReadByte ());
stream.Seek (1, SeekOrigin.Begin);
AssertEquals ("test#05", 2, stream.ReadByte ());
stream.Seek (3, SeekOrigin.Current);
AssertEquals ("test#06", 6, stream.ReadByte ());
stream.Seek (-2, SeekOrigin.Current);
AssertEquals ("test#07", 5, stream.ReadByte ());
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);
AssertEquals ("test#08", 2, stream.ReadByte ());
AssertEquals ("test#09", 2, stream.ReadByte ());
stream.Close ();
DeleteFile (path);
}
public void TestClose ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "TestClose";
DeleteFile (path);
FileStream stream = new FileStream (path, FileMode.CreateNew, FileAccess.ReadWrite);
stream.Write (new byte [] {1, 2, 3, 4}, 0, 4);
stream.ReadByte ();
stream.Close ();
try {
stream.ReadByte ();
Fail ();
} catch (Exception e) {
AssertEquals ("test#01", typeof (ObjectDisposedException), e.GetType ());
}
try {
stream.WriteByte (64);
Fail ();
} catch (Exception e) {
AssertEquals ("test#02", typeof (ObjectDisposedException), e.GetType ());
}
try {
stream.Flush ();
Fail ();
} catch (Exception e) {
AssertEquals ("test#03", typeof (ObjectDisposedException), e.GetType ());
}
try {
long l = stream.Length;
Fail ();
} catch (Exception e) {
AssertEquals ("test#04", typeof (ObjectDisposedException), e.GetType ());
}
try {
long l = stream.Position;
Fail ();
} catch (Exception e) {
AssertEquals ("test#05", typeof (ObjectDisposedException), e.GetType ());
}
AssertEquals ("test#06", false, stream.CanRead);
AssertEquals ("test#07", false, stream.CanSeek);
AssertEquals ("test#08", false, stream.CanWrite);
AssertEquals ("test#09", true, stream.Name.EndsWith (path));
DeleteFile (path);
}
///
/// Checks whether the throws a
/// when the stream is opened with access mode and the
/// method is called.
///
[Test]
[ExpectedException (typeof(NotSupportedException))]
public void TestWriteVerifyAccessMode ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
FileStream stream = null;
byte[] buffer;
try {
buffer = Encoding.ASCII.GetBytes ("test");
stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Read);
stream.Write (buffer, 0, buffer.Length);
} finally {
if (stream != null)
stream.Close();
DeleteFile (path);
}
}
///
/// Checks whether the throws a
/// when the stream is opened with access mode and the
/// method is called.
///
[Test]
[ExpectedException (typeof (NotSupportedException))]
public void TestWriteByteVerifyAccessMode ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
FileStream stream = null;
try {
stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Read);
stream.WriteByte (Byte.MinValue);
} finally {
if (stream != null)
stream.Close ();
DeleteFile (path);
}
}
///
/// Checks whether the throws a
/// when the stream is opened with access mode and the
/// method is called.
///
[Test]
[ExpectedException (typeof (NotSupportedException))]
public void TestReadVerifyAccessMode ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
FileStream stream = null;
byte[] buffer = new byte [100];
try {
stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Write);
stream.Read (buffer, 0, buffer.Length);
} finally {
if (stream != null)
stream.Close ();
}
}
///
/// Checks whether the throws a
/// when the stream is opened with access mode and the
/// method is called.
///
[Test]
[ExpectedException (typeof (NotSupportedException))]
public void TestReadByteVerifyAccessMode ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
FileStream stream = null;
try {
stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Write);
int readByte = stream.ReadByte ();
} finally {
if (stream != null)
stream.Close();
DeleteFile (path);
}
}
// Check that the stream is flushed even when it doesn't own the
// handle
[Test]
public void TestFlushNotOwningHandle ()
{
string path = Path.Combine (TempFolder, "TestFlushNotOwningHandle");
DeleteFile (path);
FileStream s = new FileStream (path, FileMode.Create);
using (FileStream s2 = new FileStream (s.Handle, FileAccess.Write, false)) {
byte[] buf = new byte [2];
buf [0] = (int)'1';
s2.Write (buf, 0, 1);
}
s.Position = 0;
AssertEquals ((int)'1', s.ReadByte ());
s.Close ();
}
private void DeleteFile (string path)
{
if (File.Exists (path))
File.Delete (path);
}
[Test]
[ExpectedException (typeof (ArgumentOutOfRangeException))]
public void Read_OffsetNegative ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
using (FileStream stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Read)) {
stream.Read (new byte[0], -1, 1);
}
}
[Test]
[ExpectedException (typeof (ArgumentException))]
public void Read_OffsetOverflow ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
using (FileStream stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Read)) {
stream.Read (new byte[0], Int32.MaxValue, 1);
}
}
[Test]
[ExpectedException (typeof (ArgumentOutOfRangeException))]
public void Read_CountNegative ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
using (FileStream stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Read)) {
stream.Read (new byte[0], 1, -1);
}
}
[Test]
[ExpectedException (typeof (ArgumentException))]
public void Read_CountOverflow ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
using (FileStream stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Read)) {
stream.Read (new byte[0], 1, Int32.MaxValue);
}
}
[Test]
[ExpectedException (typeof (ArgumentOutOfRangeException))]
public void Write_OffsetNegative ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
using (FileStream stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Write)) {
stream.Write (new byte[0], -1, 1);
}
}
[Test]
[ExpectedException (typeof (ArgumentException))]
public void Write_OffsetOverflow ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
using (FileStream stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Write)) {
stream.Write (new byte[0], Int32.MaxValue, 1);
}
}
[Test]
[ExpectedException (typeof (ArgumentOutOfRangeException))]
public void Write_CountNegative ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
using (FileStream stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Write)) {
stream.Write (new byte[0], 1, -1);
}
}
[Test]
[ExpectedException (typeof (ArgumentException))]
public void Write_CountOverflow ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
using (FileStream stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Write)) {
stream.Write (new byte[0], 1, Int32.MaxValue);
}
}
[Test]
[ExpectedException (typeof (ArgumentException))]
public void Seek_InvalidSeekOrigin ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
using (FileStream stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Read)) {
stream.Seek (0, (SeekOrigin) (-1));
}
}
[Test]
[ExpectedException (typeof (ArgumentException))]
public void Constructor_InvalidFileHandle ()
{
new FileStream ((IntPtr)(-1L), FileAccess.Read);
}
[Test]
public void PositionAfterSetLength ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
using (FileStream stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Write)) {
stream.SetLength (32);
stream.Position = 32;
stream.SetLength (16);
AssertEquals ("Position==16", 16, stream.Position);
}
}
[Test]
[ExpectedException (typeof (ObjectDisposedException))]
public void SetLength_Disposed ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
FileStream stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Write);
stream.Close ();
stream.SetLength (16);
}
[Test]
[ExpectedException (typeof (ObjectDisposedException))]
public void Position_Disposed ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
FileStream stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Read);
stream.Close ();
stream.Position = 0;
}
[Test]
[ExpectedException (typeof (ObjectDisposedException))]
public void BeginRead_Disposed ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
FileStream stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Read);
stream.Close ();
stream.EndRead (stream.BeginRead (new byte[8], 0, 8, null, null));
}
[Test]
[ExpectedException (typeof (ObjectDisposedException))]
public void BeginWrite_Disposed ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
FileStream stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Write);
stream.Close ();
stream.EndWrite (stream.BeginWrite (new byte[8], 0, 8, null, null));
}
[Test]
[ExpectedException (typeof (ObjectDisposedException))]
public void Lock_Disposed ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
FileStream stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Write);
stream.Close ();
stream.Lock (0,1);
}
[Test]
[ExpectedException (typeof (ObjectDisposedException))]
public void Unlock_Disposed ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
FileStream stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Write);
stream.Close ();
stream.Unlock (0,1);
}
[Test]
public void ReadBytePastEndOfStream ()
{
string path = TempFolder + Path.DirectorySeparatorChar + "temp";
DeleteFile (path);
using (FileStream stream = new FileStream (path, FileMode.OpenOrCreate, FileAccess.Read)) {
stream.Seek (0, SeekOrigin.End);
AssertEquals ("ReadByte", -1, stream.ReadByte ());
stream.Close ();
}
}
[Test]
[ExpectedException (typeof (NotSupportedException))]
public void SetLengthWithClosedBaseStream ()
{
string fn = Path.Combine (TempFolder, "temp");
try {
FileStream fs = new FileStream (fn, FileMode.Create);
BufferedStream bs = new BufferedStream (fs);
fs.Close ();
bs.SetLength (1000);
} finally {
File.Delete (fn);
}
}
}
}