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//
// CharEnumeratorTest.cs - NUnit Test Cases for the System.CharEnumerator class
//
// author:
// Duco Fijma (duco@lorentz.xs4all.nl)
//
// (C) 2002 Duco Fijma
//
using NUnit.Framework;
using System;
namespace MonoTests.System
{
[TestFixture]
public class CharEnumeratorTest
{
public CharEnumeratorTest () {}
string _s;
[SetUp]
protected void SetUp ()
{
_s = "Emma en Sophie";
}
private string GetFromEnumerator (CharEnumerator ce)
{
string res = "";
bool cont = true;
while (cont) {
res += ce.Current;
cont = ce.MoveNext ();
}
return res;
}
[Test]
public void TestBasic ()
{
CharEnumerator ce = _s.GetEnumerator ();
ce.MoveNext ();
Assert.AreEqual (_s, GetFromEnumerator (ce), "A1");
}
[Test]
public void TestClone ()
{
CharEnumerator ce1, ce2=null;
bool cont;
ce1 = _s.GetEnumerator ();
cont = ce1.MoveNext ();
while (cont) {
if (ce1.Current == 'S') {
ce2 = (CharEnumerator) (ce1.Clone ());
}
cont = ce1.MoveNext ();
}
Assert.AreEqual ("Sophie", GetFromEnumerator(ce2), "A1");
}
[Test]
public void TestReadOutOfBounds ()
{
char c;
bool exception;
CharEnumerator ce = _s.GetEnumerator ();
try {
c = ce.Current;
exception = false;
}
catch (InvalidOperationException) {
exception = true;
}
Assert.IsTrue (exception, "A1");
Assert.AreEqual(true, ce.MoveNext (), "A2");
Assert.AreEqual (_s, GetFromEnumerator (ce), "A3");
try {
c = ce.Current;
}
catch (InvalidOperationException) {
exception = true;
}
Assert.IsTrue (exception, "A4");
Assert.AreEqual(false, ce.MoveNext() , "A5");
Assert.AreEqual(false, ce.MoveNext() , "A6");
ce.Reset ();
try {
c = ce.Current;
}
catch (InvalidOperationException) {
exception = true;
}
Assert.IsTrue (exception, "A7");
Assert.AreEqual (true, ce.MoveNext (), "A8");
Assert.AreEqual (_s, GetFromEnumerator (ce), "A9");
Assert.AreEqual (false, ce.MoveNext (), "A10");
Assert.AreEqual (false, ce.MoveNext (), "A11");
}
}
}
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