public void TestCacheStates()
{
var generator = getGuidsGenerator();
assertIsNotACachingState(CachingGenerator.GetCachingGeneratorState(generator));
var cachingGenerator = CachingGenerator.Create(generator);
var getCachingState = (Func <CachingGenerator.State>)(() => CachingGenerator.GetCachingGeneratorState(cachingGenerator));
assertIsEmptyCachingState(getCachingState());
var firstEnumerator = cachingGenerator.GetEnumerator();
var secondEnumerator = cachingGenerator.GetEnumerator();
firstEnumerator.MoveNext();
assertIsValidCachingState(1, getCachingState());
secondEnumerator.MoveNext();
assertIsValidCachingState(1, getCachingState());
firstEnumerator.MoveNext();
assertIsValidCachingState(2, getCachingState());
firstEnumerator.Reset();
assertIsValidCachingState(2, getCachingState());
}
public void SimultaneousIteration()
{
var generator = getGuidsGenerator();
var cachingGenerator = CachingGenerator.Create(generator);
var firstEnumerator = cachingGenerator.GetEnumerator();
var secondEnumerator = cachingGenerator.GetEnumerator();
List <Guid> lst1 = new List <Guid>();
List <Guid> lst2 = new List <Guid>();
firstEnumerator.MoveNext();
lst1.Add(firstEnumerator.Current);
firstEnumerator.MoveNext();
lst1.Add(firstEnumerator.Current);
secondEnumerator.MoveNext();
lst2.Add(secondEnumerator.Current);
firstEnumerator.MoveNext();
lst1.Add(firstEnumerator.Current);
secondEnumerator.MoveNext();
lst2.Add(secondEnumerator.Current);
secondEnumerator.MoveNext();
lst2.Add(secondEnumerator.Current);
CollectionAssert.AreEqual(lst1, lst2);
assertIsValidCachingState(3, CachingGenerator.GetCachingGeneratorState(cachingGenerator));
}
public void NewEnumeratorAtEachRequest()
{
var cachingGenerator = CachingGenerator.Create(new List <string> {
"qwe", "wer", "ert"
});
var enumerator1 = cachingGenerator.GetEnumerator();
var enumerator2 = cachingGenerator.GetEnumerator();
Assert.AreNotSame(enumerator1, enumerator2);
}
public void SameValuesAfterMultipleEnumerations()
{
var generator = getGuidsGenerator();
var cachingGenerator = CachingGenerator.Create(generator);
var firstEnumeration = cachingGenerator.ToArray();
var secongEnumeration = cachingGenerator.ToArray();
CollectionAssert.AreEqual(firstEnumeration, secongEnumeration);
}
public static void Main()
{
CachingGenerator cached = new CachingGenerator();
IGenerator uncached = new NonCachingGenerator();
Program.UseGenerator(cached);
Program.UseGenerator(uncached);
Program.CheckCache(cached, 7);
Program.CheckCache(cached, 14);
}
private static void CheckCache(CachingGenerator generator, int index)
{
if (generator.IsCached(index))
{
Console.WriteLine(string.Format("{0} is cached.", index));
}
else
{
Console.WriteLine(string.Format("{0} is not cached.", index));
}
}
