{
[TestFixture]
-public class StreamWriterTest : Assertion
+public class StreamWriterTest
{
-
static string TempFolder = Path.Combine (Path.GetTempPath (), "MonoTests.System.IO.Tests");
private string _codeFileName = TempFolder + Path.DirectorySeparatorChar + "AFile.txt";
private string _thisCodeFileName = TempFolder + Path.DirectorySeparatorChar + "StreamWriterTest.temp";
Directory.Delete (TempFolder, true);
}
+ [Test] // .ctor (Stream)
+ public void Constructor1 ()
+ {
+ FileStream f = new FileStream(_codeFileName,
+ FileMode.Append,
+ FileAccess.Write);
+ StreamWriter r = new StreamWriter (f);
+ Assert.IsFalse (r.AutoFlush, "#1");
+ Assert.AreSame (f, r.BaseStream, "#2");
+ Assert.IsNotNull (r.Encoding, "#3");
+ Assert.AreEqual (typeof (UTF8Encoding), r.Encoding.GetType (), "#4");
+ r.Close();
+ f.Close();
+ }
- // TODO - ctors
[Test]
- public void TestCtor1() {
- {
- bool errorThrown = false;
- try {
- StreamWriter r = new StreamWriter((Stream)null);
- } catch (ArgumentNullException) {
- errorThrown = true;
- } catch (Exception e) {
- Fail ("Incorrect exception thrown at 1: " + e.ToString());
- }
- Assert("null string error not thrown", errorThrown);
+ public void Constructor1_Stream_NotWritable ()
+ {
+ FileStream f = new FileStream (_thisCodeFileName, FileMode.Open,
+ FileAccess.Read);
+ try {
+ new StreamWriter (f);
+ Assert.Fail ("#B1");
+ } catch (ArgumentException ex) {
+ // Stream was not writable
+ Assert.AreEqual (typeof (ArgumentException), ex.GetType (), "#2");
+ Assert.IsNull (ex.InnerException, "#3");
+ Assert.IsNotNull (ex.Message, "#4");
+ Assert.IsNull (ex.ParamName, "#5");
+ } finally {
+ f.Close ();
}
- {
- bool errorThrown = false;
- FileStream f = new FileStream(_thisCodeFileName,
- FileMode.Open,
- FileAccess.Read);
- try {
- StreamWriter r = new StreamWriter(f);
- r.Close();
- } catch (ArgumentException) {
- errorThrown = true;
- } catch (Exception e) {
- Fail ("Incorrect exception thrown at 2: " + e.ToString());
- }
- f.Close();
- Assert("no read error not thrown", errorThrown);
+ }
+
+ [Test] // .ctor (Stream)
+ public void Constructor1_Stream_Null ()
+ {
+ try {
+ new StreamWriter((Stream) null);
+ Assert.Fail ("#1");
+ } catch (ArgumentNullException ex) {
+ Assert.AreEqual (typeof (ArgumentNullException), ex.GetType (), "#2");
+ Assert.IsNull (ex.InnerException, "#3");
+ Assert.IsNotNull (ex.Message, "#4");
+ Assert.AreEqual ("stream", ex.ParamName, "#5");
}
- {
- FileStream f = new FileStream(_codeFileName,
- FileMode.Append,
- FileAccess.Write);
- StreamWriter r = new StreamWriter(f);
- AssertNotNull("no stream writer", r);
- r.Close();
- f.Close();
+ }
+
+ [Test] // .ctor (String)
+ public void Constructor2 ()
+ {
+ // TODO - Security/Auth exceptions
+ using (StreamWriter r = new StreamWriter (_codeFileName)) {
+ Assert.IsFalse (r.AutoFlush, "#1");
+ Assert.IsNotNull (r.BaseStream, "#2");
+ Assert.AreEqual (typeof (FileStream), r.BaseStream.GetType (), "#3");
+ Assert.IsNotNull (r.Encoding, "#4");
+ Assert.AreEqual (typeof (UTF8Encoding), r.Encoding.GetType (), "#5");
+ r.Close ();
}
}
- [Test]
- public void TestCtor2() {
- {
- bool errorThrown = false;
- try {
- StreamWriter r = new StreamWriter("");
- } catch (ArgumentException) {
- errorThrown = true;
- } catch (Exception e) {
- Fail ("Incorrect exception thrown at 1: " + e.ToString());
- }
- Assert("empty string error not thrown", errorThrown);
+ [Test] // .ctor (String)
+ public void Constructor2_Path_DirectoryNotFound ()
+ {
+ Directory.Delete (TempFolder, true);
+
+ try {
+ new StreamWriter (_codeFileName);
+ Assert.Fail ("#1");
+ } catch (DirectoryNotFoundException ex) {
+ // Could not find a part of the path '...'
+ Assert.AreEqual (typeof (DirectoryNotFoundException), ex.GetType (), "#2");
+ Assert.IsNull (ex.InnerException, "#3");
+ Assert.IsNotNull (ex.Message, "#4");
+ Assert.IsTrue (ex.Message.IndexOf (TempFolder) != -1, "#5");
}
- {
- bool errorThrown = false;
- try {
- StreamWriter r = new StreamWriter((string)null);
- } catch (ArgumentNullException) {
- errorThrown = true;
- } catch (Exception e) {
- Fail ("Incorrect exception thrown at 2: " + e.ToString());
- }
- Assert("null string error not thrown", errorThrown);
+ }
+
+ [Test] // .ctor (String)
+ public void Constructor2_Path_Empty ()
+ {
+ try {
+ new StreamWriter (string.Empty);
+ Assert.Fail ("#1");
+ } catch (ArgumentException ex) {
+ // Empty path name is not legal
+ Assert.AreEqual (typeof (ArgumentException), ex.GetType (), "#2");
+ Assert.IsNull (ex.InnerException, "#3");
+ Assert.IsNotNull (ex.Message, "#4");
+ Assert.IsNull (ex.ParamName, "#5");
}
- {
- bool errorThrown = false;
- try {
- StreamWriter r = new StreamWriter("nonexistentdir/file");
- } catch (DirectoryNotFoundException) {
- errorThrown = true;
- } catch (Exception e) {
- Fail ("Incorrect exception thrown at 3: " + e.ToString());
- }
- Assert("dirNotFound error not thrown", errorThrown);
+ }
+
+ [Test] // .ctor (String)
+ public void Constructor2_Path_IllegalChars ()
+ {
+ try {
+ new StreamWriter ("!$what? what? Huh? !$*#" + Path.InvalidPathChars [0]);
+ Assert.Fail ("#1");
+ } catch (ArgumentException ex) {
+ // Illegal characters in path
+ Assert.AreEqual (typeof (ArgumentException), ex.GetType (), "#2");
+ Assert.IsNull (ex.InnerException, "#3");
+ Assert.IsNotNull (ex.Message, "#4");
+ Assert.IsNull (ex.ParamName, "#5");
}
- {
- bool errorThrown = false;
- try {
- StreamWriter r = new StreamWriter("!$what? what? Huh? !$*#" + Path.InvalidPathChars[0]);
- } catch (IOException) {
- errorThrown = true;
- } catch (ArgumentException) {
- // FIXME - the spec says 'IOExc', but the
- // compiler says 'ArgExc'...
- errorThrown = true;
- } catch (Exception e) {
- Fail ("Incorrect exception thrown at 4: " + e.ToString());
- }
- Assert("1 invalid filename error not thrown", errorThrown);
+ }
+
+ [Test] // .ctor (String)
+ public void Constructor2_Path_Null ()
+ {
+ try {
+ new StreamWriter ((string) null);
+ Assert.Fail ("#1");
+ } catch (ArgumentNullException ex) {
+ Assert.AreEqual (typeof (ArgumentNullException), ex.GetType (), "#2");
+ Assert.IsNull (ex.InnerException, "#3");
+ Assert.IsNotNull (ex.Message, "#4");
+ Assert.AreEqual ("path", ex.ParamName, "#5");
}
- // TODO - Security/Auth exceptions
- {
- StreamWriter r = new StreamWriter(_codeFileName);
- AssertNotNull("no stream writer", r);
- r.Close();
+ }
+
+ [Test] // .ctor (String)
+ public void Constructor2_Path_Whitespace ()
+ {
+ try {
+ new StreamWriter (" \r\n ");
+ Assert.Fail ("#1");
+ } catch (ArgumentException ex) {
+ // Illegal characters in path
+ Assert.AreEqual (typeof (ArgumentException), ex.GetType (), "#2");
+ Assert.IsNull (ex.InnerException, "#3");
+ Assert.IsNotNull (ex.Message, "#4");
+ Assert.IsNull (ex.ParamName, "#5");
}
}
- [Test]
- public void TestCtor3() {
- {
- bool errorThrown = false;
- try {
- StreamWriter r = new StreamWriter("", false);
- } catch (ArgumentException) {
- errorThrown = true;
- } catch (Exception e) {
- Fail ("Incorrect exception thrown at 1: " + e.ToString());
- }
- Assert("empty string error not thrown", errorThrown);
+ [Test] // .ctor (String, Boolean)
+ public void Constructor3 ()
+ {
+ using (StreamWriter r = new StreamWriter (_codeFileName, false)) {
+ r.Close();
}
- {
- bool errorThrown = false;
- try {
- StreamWriter r = new StreamWriter((string)null, false);
- } catch (ArgumentNullException) {
- errorThrown = true;
- } catch (Exception e) {
- Fail ("Incorrect exception thrown at 2: " + e.ToString());
- }
- Assert("null string error not thrown", errorThrown);
+
+ using (StreamWriter r = new StreamWriter(_codeFileName, true)) {
+ r.Close();
}
- {
- bool errorThrown = false;
- try {
- StreamWriter r = new StreamWriter("nonexistentdir/file", false);
- } catch (DirectoryNotFoundException) {
- errorThrown = true;
- } catch (Exception e) {
- Fail ("Incorrect exception thrown at 3: " + e.ToString());
- }
- Assert("dirNotFound error not thrown", errorThrown);
+ }
+
+ [Test] // .ctor (String, Boolean)
+ public void Constructor3_Path_DirectoryNotFound ()
+ {
+ Directory.Delete (TempFolder, true);
+
+ try {
+ new StreamWriter (_codeFileName, false);
+ Assert.Fail ("#A1");
+ } catch (DirectoryNotFoundException ex) {
+ // Could not find a part of the path '...'
+ Assert.AreEqual (typeof (DirectoryNotFoundException), ex.GetType (), "#A2");
+ Assert.IsNull (ex.InnerException, "#A3");
+ Assert.IsNotNull (ex.Message, "#A4");
+ Assert.IsTrue (ex.Message.IndexOf (TempFolder) != -1, "#A5");
}
- {
- bool errorThrown = false;
- try {
- StreamWriter r = new StreamWriter("!$what? what? Huh? !$*#" + Path.InvalidPathChars[0], false);
- } catch (IOException) {
- errorThrown = true;
- } catch (ArgumentException) {
- // FIXME - the spec says 'IOExc', but the
- // compiler says 'ArgExc'...
- errorThrown = true;
- } catch (Exception e) {
- Fail ("Incorrect exception thrown at 4: " + e.ToString());
- }
- Assert("2 invalid filename error not thrown", errorThrown);
+
+ try {
+ new StreamWriter (_codeFileName, true);
+ Assert.Fail ("#B1");
+ } catch (DirectoryNotFoundException ex) {
+ // Could not find a part of the path '...'
+ Assert.AreEqual (typeof (DirectoryNotFoundException), ex.GetType (), "#B2");
+ Assert.IsNull (ex.InnerException, "#B3");
+ Assert.IsNotNull (ex.Message, "#B4");
+ Assert.IsTrue (ex.Message.IndexOf (TempFolder) != -1, "#B5");
}
- {
- StreamWriter r = new StreamWriter(_codeFileName, false);
- AssertNotNull("no stream writer", r);
- r.Close();
+ }
+
+ [Test] // .ctor (String, Boolean)
+ public void Constructor3_Path_Empty ()
+ {
+ try {
+ new StreamWriter (string.Empty, false);
+ Assert.Fail ("#A1");
+ } catch (ArgumentException ex) {
+ // Empty path name is not legal
+ Assert.AreEqual (typeof (ArgumentException), ex.GetType (), "#A2");
+ Assert.IsNull (ex.InnerException, "#A3");
+ Assert.IsNotNull (ex.Message, "#A4");
+ Assert.IsNull (ex.ParamName, "#A5");
}
- {
- bool errorThrown = false;
- try {
- StreamWriter r = new StreamWriter("", true);
- } catch (ArgumentException) {
- errorThrown = true;
- } catch (Exception e) {
- Fail ("Incorrect exception thrown at 5: " + e.ToString());
- }
- Assert("empty string error not thrown", errorThrown);
+
+ try {
+ new StreamWriter (string.Empty, true);
+ Assert.Fail ("#B1");
+ } catch (ArgumentException ex) {
+ // Empty path name is not legal
+ Assert.AreEqual (typeof (ArgumentException), ex.GetType (), "#B2");
+ Assert.IsNull (ex.InnerException, "#B3");
+ Assert.IsNotNull (ex.Message, "#B4");
+ Assert.IsNull (ex.ParamName, "#B5");
}
- {
- bool errorThrown = false;
- try {
- StreamWriter r = new StreamWriter((string)null, true);
- } catch (ArgumentNullException) {
- errorThrown = true;
- } catch (Exception e) {
- Fail ("Incorrect exception thrown at 6: " + e.ToString());
- }
- Assert("null string error not thrown", errorThrown);
+ }
+
+ [Test] // .ctor (String, Boolean)
+ public void Constructor3_Path_InvalidChars ()
+ {
+ try {
+ new StreamWriter ("!$what? what? Huh? !$*#" + Path.InvalidPathChars [0], false);
+ Assert.Fail ("#A1");
+ } catch (ArgumentException ex) {
+ // Illegal characters in path
+ Assert.AreEqual (typeof (ArgumentException), ex.GetType (), "#A2");
+ Assert.IsNull (ex.InnerException, "#A3");
+ Assert.IsNotNull (ex.Message, "#A4");
+ Assert.IsNull (ex.ParamName, "#A5");
}
- {
- bool errorThrown = false;
- try {
- StreamWriter r = new StreamWriter("nonexistentdir/file", true);
- } catch (DirectoryNotFoundException) {
- errorThrown = true;
- } catch (Exception e) {
- Fail ("Incorrect exception thrown at 7: " + e.ToString());
- }
- Assert("dirNotFound error not thrown", errorThrown);
+
+ try {
+ new StreamWriter ("!$what? what? Huh? !$*#" + Path.InvalidPathChars [0], true);
+ Assert.Fail ("#B1");
+ } catch (ArgumentException ex) {
+ // Illegal characters in path
+ Assert.AreEqual (typeof (ArgumentException), ex.GetType (), "#B2");
+ Assert.IsNull (ex.InnerException, "#B3");
+ Assert.IsNotNull (ex.Message, "#B4");
+ Assert.IsNull (ex.ParamName, "#B5");
}
- {
- bool errorThrown = false;
- try {
- StreamWriter r = new StreamWriter("!$what? what? Huh? !$*#" + Path.InvalidPathChars[0], true);
- } catch (IOException) {
- errorThrown = true;
- } catch (ArgumentException) {
- // FIXME - the spec says 'IOExc', but the
- // compiler says 'ArgExc'...
- errorThrown = true;
- } catch (Exception e) {
- Fail ("Incorrect exception thrown at 8: " + e.ToString());
- }
- Assert("3 invalid filename error not thrown", errorThrown);
+ }
+
+ [Test] // .ctor (String, Boolean)
+ public void Constructor3_Path_Null ()
+ {
+ try {
+ new StreamWriter ((string) null, false);
+ Assert.Fail ("#A1");
+ } catch (ArgumentNullException ex) {
+ Assert.AreEqual (typeof (ArgumentNullException), ex.GetType (), "#A2");
+ Assert.IsNull (ex.InnerException, "#A3");
+ Assert.IsNotNull (ex.Message, "#A4");
+ Assert.AreEqual ("path", ex.ParamName, "#A5");
}
- {
- try {
- StreamWriter r = new StreamWriter(_codeFileName, true);
- AssertNotNull("no stream writer", r);
- r.Close();
- } catch (Exception e) {
- Fail ("Unxpected exception e=" + e.ToString());
- }
+
+ try {
+ new StreamWriter ((string) null, true);
+ Assert.Fail ("#B1");
+ } catch (ArgumentNullException ex) {
+ Assert.AreEqual (typeof (ArgumentNullException), ex.GetType (), "#B2");
+ Assert.IsNull (ex.InnerException, "#B3");
+ Assert.IsNotNull (ex.Message, "#B4");
+ Assert.AreEqual ("path", ex.ParamName, "#B5");
}
}
// TODO - ctors with Encoding
- // TODO - AutoFlush
[Test]
- public void TestAutoFlush() {
- {
- MemoryStream m = new MemoryStream();
- StreamWriter w = new StreamWriter(m);
- w.AutoFlush = false;
- w.Write(1);
- w.Write(2);
- w.Write(3);
- w.Write(4);
- AssertEquals("Should be nothing before flush",
- 0L, m.Length);
- w.Flush();
- AssertEquals("Should be something after flush",
- 4L, m.Length);
- }
- {
- MemoryStream m = new MemoryStream();
- StreamWriter w = new StreamWriter(m);
- w.AutoFlush = true;
- w.Write(1);
- w.Write(2);
- w.Write(3);
- w.Write(4);
- AssertEquals("Should be something before flush",
- 4L, m.Length);
- w.Flush();
- AssertEquals("Should be something after flush",
- 4L, m.Length);
- }
+ public void AutoFlush ()
+ {
+ MemoryStream m;
+ StreamWriter w;
+
+ m = new MemoryStream ();
+ w = new StreamWriter (m);
+ w.Write (1);
+ w.Write (2);
+ w.Write (3);
+ w.Write (4);
+ Assert.AreEqual (0, m.Length, "#A1");
+ w.AutoFlush = true;
+ Assert.IsTrue (w.AutoFlush, "#A2");
+ Assert.AreEqual (4, m.Length, "#A3");
+ w.Flush ();
+ Assert.AreEqual (4, m.Length, "#A4");
+
+ m = new MemoryStream ();
+ w = new StreamWriter(m);
+ w.AutoFlush = true;
+ Assert.IsTrue (w.AutoFlush, "#B1");
+ w.Write (1);
+ w.Write (2);
+ w.Write (3);
+ w.Write (4);
+ Assert.AreEqual (4, m.Length, "#B2");
+ w.Flush ();
+ Assert.AreEqual (4, m.Length, "#B3");
+ w.AutoFlush = false;
+ Assert.IsFalse (w.AutoFlush, "#B4");
+ w.Write (4);
+ Assert.AreEqual (4, m.Length, "#B5");
+ w.Flush ();
+ Assert.AreEqual (5, m.Length, "#B6");
}
[Test]
- public void TestBaseStream() {
- FileStream f = new FileStream(_codeFileName,
- FileMode.Append,
- FileAccess.Write);
- StreamWriter r = new StreamWriter(f);
- AssertEquals("wrong base stream ", f, r.BaseStream);
- r.Close();
- f.Close();
+ [Category ("NotWorking")]
+ public void AutoFlush_Disposed ()
+ {
+ StreamWriter w;
+
+ w = new StreamWriter (new MemoryStream ());
+ w.Close ();
+ w.AutoFlush = false;
+ Assert.IsFalse (w.AutoFlush, "#A1");
+ try {
+ w.AutoFlush = true;
+ Assert.Fail ("#A2");
+ } catch (ObjectDisposedException) {
+ }
+ Assert.IsTrue (w.AutoFlush, "#A3");
+
+ w = new StreamWriter (new MemoryStream ());
+ w.AutoFlush = true;
+ w.Close ();
+ Assert.IsTrue (w.AutoFlush, "#B1");
+ try {
+ w.AutoFlush = true;
+ Assert.Fail ("#B2");
+ } catch (ObjectDisposedException) {
+ }
+ Assert.IsTrue (w.AutoFlush, "#B3");
+ w.AutoFlush = false;
+ Assert.IsFalse (w.AutoFlush, "#B4");
}
[Test]
- public void TestEncoding() {
- StreamWriter r = new StreamWriter(_codeFileName);
- AssertEquals("wrong encoding",
- Encoding.UTF8.GetType(), r.Encoding.GetType());
- r.Close();
+ public void Close ()
+ {
+ Encoding encoding = Encoding.ASCII;
+ MemoryStream m = new MemoryStream ();
+ StreamWriter w = new StreamWriter (m, encoding);
+ w.Write (2);
+ Assert.AreEqual (0, m.Length, "#1");
+ w.Close ();
+ Assert.IsFalse (m.CanWrite, "#2");
+ Assert.AreEqual (50, m.GetBuffer () [0], "#3");
+ Assert.IsNull (w.BaseStream, "#4");
+ Assert.IsNull (w.Encoding, "#5");
}
- // TODO - Close - not entirely sure how to test Close
- //public void TestClose() {
- //{
- //MemoryStream m = new MemoryStream();
- //StreamWriter w = new StreamWriter(m);
- //StreamReader r = new StreamReader(m);
- //w.Write(1);
- //w.Write(2);
- //w.Write(3);
- //w.Write(4);
- //AssertEquals("Should be nothing before close",
- //0, m.Length);
- //AssertEquals("Should be nothing in reader",
- //-1, r.Peek());
- //w.Close();
- //AssertEquals("Should be something after close",
- //1, r.Peek());
- //}
- //}
-
- // TODO - Flush
[Test]
- public void TestFlush() {
- {
- bool errorThrown = false;
- try {
- FileStream f = new FileStream(_codeFileName,
- FileMode.Append,
- FileAccess.Write);
- StreamWriter r = new StreamWriter(f);
- r.Close();
- r.Flush();
- } catch (ObjectDisposedException) {
- errorThrown = true;
- } catch (Exception e) {
- Fail ("Incorrect exception thrown at 1: " + e.ToString());
- }
- Assert("can't flush closed error not thrown", errorThrown);
- }
- {
- MemoryStream m = new MemoryStream();
- StreamWriter w = new StreamWriter(m);
- w.Write(1);
- w.Write(2);
- w.Write(3);
- w.Write(4);
- AssertEquals("Should be nothing before flush",
- 0L, m.Length);
- w.Flush();
- AssertEquals("Should be something after flush",
- 4L, m.Length);
- }
+ public void Flush ()
+ {
+ MemoryStream m = new MemoryStream();
+ StreamWriter w = new StreamWriter(m);
+ w.Write(1);
+ w.Write(2);
+ w.Write(3);
+ w.Write(4);
+ Assert.AreEqual (0L, m.Length, "#1");
+ w.Flush();
+ Assert.AreEqual (4L, m.Length, "#2");
}
[Test]
- [ExpectedException (typeof (ObjectDisposedException))]
- public void AutoFlush_Disposed ()
+ public void Flush_Disposed ()
{
- StreamWriter w = new StreamWriter (new MemoryStream ());
- w.Close ();
- w.AutoFlush = true;
+ StreamWriter w = new StreamWriter(new MemoryStream ());
+ w.Close();
+ try {
+ w.Flush ();
+ Assert.Fail ("#1");
+ } catch (ObjectDisposedException) {
+ }
}
[Test]
}
[Test]
- // accepted [ExpectedException (typeof (ArgumentNullException))]
public void WriteCharArray_Null ()
{
char[] c = null;
}
[Test]
- // accepted [ExpectedException (typeof (ArgumentNullException))]
public void WriteString_Null ()
{
string s = null;
StreamWriter w = new StreamWriter (ms, Encoding.UTF8);
w.Write ("a");
w.Flush ();
- AssertEquals ("Incorrect size after writing 1 byte plus header", ms.Position, 4);
+ Assert.AreEqual (4, ms.Position, "#1");
// Append 1 byte, should skip the preamble now.
w.Write ("a");
w.Flush ();
w = new StreamWriter (ms, Encoding.UTF8);
- AssertEquals ("Incorrect size after writing 1 byte, must have been 5", ms.Position, 5);
-
+ Assert.AreEqual (5, ms.Position, "#2");
}
// TODO - Write - test errors, functionality tested in TestFlush.
projects / mono.git / commitdiff