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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
{
public class CharEnumeratorTest : TestCase
{
public CharEnumeratorTest () {}
string _s;
protected override 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;
}
public void TestBasic ()
{
CharEnumerator ce = _s.GetEnumerator ();
ce.MoveNext ();
AssertEquals ("A1", _s, GetFromEnumerator (ce));
}
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 ();
}
AssertEquals ("A1", "Sophie", GetFromEnumerator(ce2));
}
public void TestReadOutOfBounds ()
{
char c;
bool exception;
CharEnumerator ce = _s.GetEnumerator ();
try {
c = ce.Current;
exception = false;
}
catch (InvalidOperationException) {
exception = true;
}
Assert ("A1", exception);
AssertEquals("A2", true, ce.MoveNext ());
AssertEquals ("A3", _s, GetFromEnumerator (ce));
try {
c = ce.Current;
}
catch (InvalidOperationException) {
exception = true;
}
Assert ("A4", exception);
AssertEquals("A5", false, ce.MoveNext() );
AssertEquals("A6", false, ce.MoveNext() );
ce.Reset ();
try {
c = ce.Current;
}
catch (InvalidOperationException) {
exception = true;
}
Assert ("A7", exception);
AssertEquals ("A8", true, ce.MoveNext ());
AssertEquals ("A9", _s, GetFromEnumerator (ce));
AssertEquals ("A10", false, ce.MoveNext ());
AssertEquals ("A11", false, ce.MoveNext ());
}
}
}
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