public void TestNullCollection()
{
ICollection nullCollection = NullImplementation.GetCollection();
Assert.IsNotNull(nullCollection);
Assert.IsInstanceOf(typeof(NullImplementation.NullCollection), nullCollection);
Assert.AreEqual(nullCollection.Count, 0);
IList list = new ArrayList();
Assert.IsTrue(nullCollection.Equals(list));
list.Add(1);
Assert.IsFalse(nullCollection.Equals(list));
Assert.AreEqual(nullCollection.GetHashCode(), 0);
object[] array = new object[0];
Assert.AreEqual(array.Length, 0);
nullCollection.CopyTo(array, 0);
Assert.AreEqual(array.Length, 0);
array = new object[] { 1, 2, 3 };
Assert.AreEqual(array.Length, 3);
nullCollection.CopyTo(array, 0);
Assert.AreEqual(array.Length, 3);
IEnumerator nullEnumerator = nullCollection.GetEnumerator();
Assert.IsNotNull(nullEnumerator);
Assert.IsInstanceOf(typeof(NullImplementation.NullEnumerator), nullEnumerator);
Assert.IsFalse(nullEnumerator.MoveNext());
nullEnumerator.Reset();
}
public void TestNullValueExtractor()
{
IValueExtractor nullValueExtractor = NullImplementation.GetValueExtractor();
Assert.IsNotNull(nullValueExtractor);
Assert.IsInstanceOf(typeof(NullImplementation.NullValueExtractor), nullValueExtractor);
object o = new object();
object o1 = nullValueExtractor.Extract(o);
Assert.AreEqual(o, o1);
}
public void TestNullDictionary()
{
IDictionary nullDictionary = NullImplementation.GetDictionary();
Assert.IsNotNull(nullDictionary);
Assert.IsInstanceOf(typeof(NullImplementation.NullDictionary), nullDictionary);
Assert.AreEqual(nullDictionary.Count, 0);
nullDictionary.Add(1, 1);
Assert.AreEqual(nullDictionary.Count, 0);
nullDictionary.Clear();
Assert.AreEqual(nullDictionary.Count, 0);
Assert.AreEqual(nullDictionary.GetHashCode(), 0);
IDictionary hashtable = new Hashtable();
Assert.IsTrue(nullDictionary.Equals(hashtable));
hashtable.Add(1, 1);
Assert.IsFalse(nullDictionary.Equals(hashtable));
Assert.IsFalse(nullDictionary.Contains(2));
Assert.IsTrue(nullDictionary.IsFixedSize);
Assert.IsTrue(nullDictionary.IsReadOnly);
nullDictionary.Remove(1);
Assert.AreEqual(nullDictionary.Count, 0);
ICollection keys = nullDictionary.Keys;
Assert.IsNotNull(keys);
Assert.IsInstanceOf(typeof(NullImplementation.NullCollection), keys);
Assert.AreEqual(keys.Count, 0);
ICollection values = nullDictionary.Values;
Assert.IsNotNull(values);
Assert.IsInstanceOf(typeof(NullImplementation.NullCollection), values);
Assert.AreEqual(values.Count, 0);
IDictionaryEnumerator nullEnumerator = nullDictionary.GetEnumerator();
Assert.IsNotNull(nullEnumerator);
Assert.IsInstanceOf(typeof(NullImplementation.NullEnumerator), nullEnumerator);
Assert.IsFalse(nullEnumerator.MoveNext());
int count = 0;
foreach (DictionaryEntry entry in nullDictionary)
{
count++;
}
Assert.AreEqual(count, 0);
}
public void TestNullCache()
{
ICache nullCache = NullImplementation.GetCache();
Assert.IsNotNull(nullCache);
Assert.IsInstanceOf(typeof(NullImplementation.NullCache), nullCache);
Assert.AreEqual(nullCache.Count, 0);
IList list = new ArrayList();
list.Add(1);
IDictionary ht = new Hashtable();
ht.Add(1, 1);
ht.Add(2, 2);
nullCache.InsertAll(ht);
Assert.AreEqual(nullCache.Count, 0);
IDictionary res = nullCache.GetAll(list);
Assert.IsNotNull(res);
Assert.IsInstanceOf(typeof(NullImplementation.NullDictionary), res);
object o = nullCache.Insert(1, 1);
Assert.IsFalse(nullCache.Contains(1));
Assert.IsNull(o);
o = nullCache.Insert(1, 1, 100);
Assert.IsFalse(nullCache.Contains(1));
Assert.IsNull(o);
ICollection entries = nullCache.Entries;
Assert.IsNotNull(entries);
Assert.IsInstanceOf(typeof(NullImplementation.NullCollection), entries);
Assert.AreEqual(entries.Count, 0);
ICacheEnumerator nullEnumerator = nullCache.GetEnumerator();
Assert.IsNotNull(nullEnumerator);
Assert.IsInstanceOf(typeof(NullImplementation.NullEnumerator), nullEnumerator);
Assert.IsFalse(nullEnumerator.MoveNext());
int count = 0;
foreach (DictionaryEntry entry in nullCache)
{
count++;
}
Assert.AreEqual(count, 0);
}
