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//
// System.IO.StringWriter
//
// Authors:
// Marcin Szczepanski (marcins@zipworld.com.au)
// Ben Maurer <bmaurer@users.sourceforge.net>
// Sebastien Pouliot <sebastien@ximian.com>
//
// Copyright (C) 2004 Novell (http://www.novell.com)
//
using NUnit.Framework;
using System.IO;
using System;
using System.Globalization;
using System.Text;
namespace MonoTests.System.IO {
[TestFixture]
public class StringWriterTest {
[Test]
public void TestConstructors() {
StringBuilder sb = new StringBuilder("Test String");
StringWriter writer = new StringWriter( sb );
Assert.AreEqual (sb, writer.GetStringBuilder());
}
[Test]
public void TestCultureInfoConstructor() {
StringWriter writer = new StringWriter(CultureInfo.InvariantCulture);
Assert.IsNotNull (writer.GetStringBuilder());
Assert.AreEqual (String.Empty, writer.ToString());
writer.Write( 'A' );
Assert.AreEqual ("A", writer.ToString());
writer.Write( " foo" );
Assert.AreEqual ("A foo", writer.ToString());
char[] testBuffer = "Test String".ToCharArray();
writer.Write( testBuffer, 0, 4 );
Assert.AreEqual ("A fooTest", writer.ToString());
writer.Write( testBuffer, 5, 6 );
Assert.AreEqual ("A fooTestString", writer.ToString());
writer = new StringWriter(CultureInfo.InvariantCulture);
writer.Write(null as string);
Assert.AreEqual ("", writer.ToString());
}
[Test]
public void TestWrite() {
StringWriter writer = new StringWriter();
Assert.AreEqual (String.Empty, writer.ToString());
writer.Write( 'A' );
Assert.AreEqual ("A", writer.ToString());
writer.Write( " foo" );
Assert.AreEqual ("A foo", writer.ToString());
char[] testBuffer = "Test String".ToCharArray();
writer.Write( testBuffer, 0, 4 );
Assert.AreEqual ("A fooTest", writer.ToString());
writer.Write( testBuffer, 5, 6 );
Assert.AreEqual ("A fooTestString", writer.ToString());
writer = new StringWriter ();
writer.Write(null as string);
Assert.AreEqual ("", writer.ToString());
}
[Test]
public void TestNewLine() {
StringWriter writer = new StringWriter();
writer.NewLine = "\n\r";
Assert.AreEqual ("\n\r", writer.NewLine, "NewLine 1");
writer.WriteLine ("first");
Assert.AreEqual ("first\n\r", writer.ToString(), "NewLine 2");
writer.NewLine = "\n";
Assert.AreEqual ("first\n\r", writer.ToString(), "NewLine 3");
writer.WriteLine ("second");
Assert.AreEqual ("first\n\rsecond\n", writer.ToString(), "NewLine 4");
}
[Test]
public void TestWriteLine() {
StringWriter writer = new StringWriter();
writer.NewLine = "\n";
writer.WriteLine ("first line");
writer.WriteLine ("second line");
Assert.AreEqual ("first line\nsecond line\n", writer.ToString (), "WriteLine 1");
writer.Close ();
}
[Test]
public void TestGetStringBuilder() {
StringWriter writer = new StringWriter ();
writer.Write ("line");
StringBuilder builder = writer.GetStringBuilder ();
builder.Append (12);
Assert.AreEqual ("line12", writer.ToString (), "GetStringBuilder 1");
writer.Write ("test");
Assert.AreEqual ("line12test", builder.ToString (), "GetStringBuilder 2");
}
[Test]
public void TestClose() {
StringWriter writer = new StringWriter ();
writer.Write ("mono");
writer.Close ();
try {
writer.Write ("kicks ass");
Assert.Fail ("Close 1");
} catch (Exception e) {
Assert.AreEqual (typeof (ObjectDisposedException), e.GetType (), "Close 2");
}
Assert.AreEqual ("mono", writer.ToString (), "Close 3");
writer.Flush ();
StringBuilder builder = writer.GetStringBuilder ();
Assert.AreEqual ("mono", builder.ToString (), "Close 4");
builder.Append (" kicks ass");
Assert.AreEqual ("mono kicks ass", writer.ToString (), "Close 5");
}
[Test]
public void TestExceptions () {
try {
StringWriter writer = new StringWriter (null as StringBuilder);
Assert.Fail ();
} catch (Exception e) {
Assert.AreEqual (typeof (ArgumentNullException), e.GetType (), "Exceptions 1");
}
{
StringWriter writer = new StringWriter (null as IFormatProvider);
}
try {
StringWriter writer = new StringWriter (null as StringBuilder, null as IFormatProvider);
Assert.Fail ();
} catch (Exception e) {
Assert.AreEqual (typeof (ArgumentNullException), e.GetType (), "Exceptions 2");
}
}
[Test]
// strangely this is accepted [ExpectedException (typeof (ArgumentNullException))]
public void WriteString_Null ()
{
StringWriter writer = new StringWriter ();
writer.Write (null as String);
}
[Test]
[ExpectedException (typeof (ArgumentNullException))]
public void WriteChars_Null ()
{
StringWriter writer = new StringWriter ();
writer.Write (null, 0, 0);
}
[Test]
[ExpectedException (typeof (ArgumentOutOfRangeException))]
public void WriteChars_IndexNegative ()
{
char[] c = new char [2] { 'a', 'b' };
StringWriter writer = new StringWriter ();
writer.Write (c, -1, 0);
}
[Test]
[ExpectedException (typeof (ArgumentOutOfRangeException))]
public void WriteChars_CountNegative ()
{
char[] c = new char [2] { 'a', 'b' };
StringWriter writer = new StringWriter ();
writer.Write (c, 0, -1);
}
[Test]
[ExpectedException (typeof (ArgumentException))]
public void WriteChars_IndexOverflow ()
{
char[] c = new char [2] { 'a', 'b' };
StringWriter writer = new StringWriter ();
writer.Write (c, Int32.MaxValue, 0);
}
[Test]
[ExpectedException (typeof (ArgumentException))]
public void WriteChars_CountOverflow ()
{
char[] c = new char [2] { 'a', 'b' };
StringWriter writer = new StringWriter ();
writer.Write (c, 0, Int32.MaxValue);
}
[Test]
public void Disposed_Encoding ()
{
StringWriter writer = new StringWriter ();
writer.Close ();
Assert.IsNotNull (writer.Encoding, "Disposed-Encoding");
}
[Test]
public void Disposed_DoubleClose ()
{
StringWriter writer = new StringWriter ();
writer.Close ();
writer.Close ();
}
[Test]
public void Disposed_GetStringBuilder ()
{
StringWriter writer = new StringWriter ();
writer.Write ("Mono");
writer.Close ();
Assert.IsNotNull (writer.GetStringBuilder (), "Disposed-GetStringBuilder");
}
[Test]
public void Disposed_ToString ()
{
StringWriter writer = new StringWriter ();
writer.Write ("Mono");
writer.Close ();
Assert.AreEqual ("Mono", writer.ToString (), "Disposed-ToString");
}
[Test]
[ExpectedException (typeof (ObjectDisposedException))]
public void Disposed_WriteChar ()
{
StringWriter writer = new StringWriter ();
writer.Close ();
writer.Write ('c');
}
[Test]
[ExpectedException (typeof (ObjectDisposedException))]
public void Disposed_WriteString ()
{
StringWriter writer = new StringWriter ();
writer.Close ();
writer.Write ("mono");
}
[Test]
[ExpectedException (typeof (ObjectDisposedException))]
public void Disposed_WriteChars ()
{
char[] c = new char [2] { 'a', 'b' };
StringWriter writer = new StringWriter ();
writer.Close ();
writer.Write (c, 0, 2);
}
}
}
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