public void TripleEntryEnumerable()
{
List <string> list = new List <string>();
list.Add("x");
list.Add("y");
list.Add("z");
SmartEnumerable <string> subject = new SmartEnumerable <string>(list);
using (IEnumerator <SmartEnumerable <string> .Entry> iterator = subject.GetEnumerator())
{
Assert.IsTrue(iterator.MoveNext());
Assert.IsTrue(iterator.Current.IsFirst);
Assert.IsFalse(iterator.Current.IsLast);
Assert.AreEqual("x", iterator.Current.Value);
Assert.AreEqual(0, iterator.Current.Index);
Assert.IsTrue(iterator.MoveNext());
Assert.IsFalse(iterator.Current.IsFirst);
Assert.IsFalse(iterator.Current.IsLast);
Assert.AreEqual("y", iterator.Current.Value);
Assert.AreEqual(1, iterator.Current.Index);
Assert.IsTrue(iterator.MoveNext());
Assert.IsFalse(iterator.Current.IsFirst);
Assert.IsTrue(iterator.Current.IsLast);
Assert.AreEqual("z", iterator.Current.Value);
Assert.AreEqual(2, iterator.Current.Index);
Assert.IsFalse(iterator.MoveNext());
}
}
public void EmptyEnumerable()
{
List<string> emptyList = new List<string>();
SmartEnumerable<string> subject = new SmartEnumerable<string>(emptyList);
using (IEnumerator<SmartEnumerable<string>.Entry> iterator = subject.GetEnumerator())
{
Assert.IsFalse(iterator.MoveNext());
}
}
public void SmartEnumerableDoesNotIterateForEmptyCollection()
{
IList <string> inner = new List <string>();
SmartEnumerable <string> smart = new SmartEnumerable <string>(inner);
using (IEnumerator <SmartEnumerable <string> .Entry> iterator = smart.GetEnumerator())
{
Assert.IsFalse(iterator.MoveNext());
}
}
public void EmptyEnumerable()
{
List <string> emptyList = new List <string>();
SmartEnumerable <string> subject = new SmartEnumerable <string>(emptyList);
using (IEnumerator <SmartEnumerable <string> .Entry> iterator = subject.GetEnumerator())
{
Assert.IsFalse(iterator.MoveNext());
}
}
private static void TestSingleEntry(SmartEnumerable<string> subject)
{
using (IEnumerator<SmartEnumerable<string>.Entry> iterator = subject.GetEnumerator())
{
Assert.IsTrue(iterator.MoveNext());
Assert.IsTrue(iterator.Current.IsFirst);
Assert.IsTrue(iterator.Current.IsLast);
Assert.AreEqual("x", iterator.Current.Value);
Assert.AreEqual(0, iterator.Current.Index);
Assert.IsFalse(iterator.MoveNext());
}
}
private static void TestSingleEntry(SmartEnumerable <string> subject)
{
using (IEnumerator <SmartEnumerable <string> .Entry> iterator = subject.GetEnumerator())
{
Assert.IsTrue(iterator.MoveNext());
Assert.IsTrue(iterator.Current.IsFirst);
Assert.IsTrue(iterator.Current.IsLast);
Assert.AreEqual("x", iterator.Current.Value);
Assert.AreEqual(0, iterator.Current.Index);
Assert.IsFalse(iterator.MoveNext());
}
}
public void SmartEnumerableIteratesForCollectionWithSingleEntry()
{
List <string> inner = new List <string> {
"a"
};
SmartEnumerable <string> smart = new SmartEnumerable <string>(inner);
using (IEnumerator <SmartEnumerable <string> .Entry> iterator = smart.GetEnumerator())
{
iterator.MoveNext();
var current = iterator.Current;
Assert.IsNotNull(current);
}
}
public void SmartEnumerableForCollectionWithMoreThanOneEntryStopsIterating()
{
List <string> inner = new List <string> {
"a", "b"
};
SmartEnumerable <string> smart = new SmartEnumerable <string>(inner);
using (IEnumerator <SmartEnumerable <string> .Entry> iterator = smart.GetEnumerator())
{
iterator.MoveNext();
iterator.MoveNext();
Assert.IsFalse(iterator.MoveNext());
}
}
public void SmartEnumerableIteratorWithMoreThanOneEntryReturnsFirstEntryWithExpectedIndex()
{
List <string> inner = new List <string> {
"a", "b"
};
SmartEnumerable <string> smart = new SmartEnumerable <string>(inner);
using (IEnumerator <SmartEnumerable <string> .Entry> iterator = smart.GetEnumerator())
{
iterator.MoveNext();
var first = iterator.Current;
Assert.AreEqual(0, first.Index);
}
}
public void SmartEnumerableIteratorForCollectionWithMoreThanOneEntryReturnsEntryThatIsFirstButNotLast()
{
List <string> inner = new List <string> {
"a", "b"
};
SmartEnumerable <string> smart = new SmartEnumerable <string>(inner);
using (IEnumerator <SmartEnumerable <string> .Entry> iterator = smart.GetEnumerator())
{
iterator.MoveNext();
var first = iterator.Current;
Assert.IsTrue(first.IsFirst);
Assert.IsFalse(first.IsLast);
}
}
public void SmartEnumerableIteratorReturnsSingleEntryThatIsFirstAndLastEntry()
{
List <string> inner = new List <string> {
"a"
};
SmartEnumerable <string> smart = new SmartEnumerable <string>(inner);
using (IEnumerator <SmartEnumerable <string> .Entry> iterator = smart.GetEnumerator())
{
iterator.MoveNext();
var current = iterator.Current;
Assert.IsTrue(current.IsFirst);
Assert.IsTrue(current.IsLast);
}
}
public void SmartEnumerableIteratorReturnsSingleEntryWithExpectedValue()
{
const string expected = "a";
List <string> inner = new List <string> {
"a"
};
SmartEnumerable <string> smart = new SmartEnumerable <string>(inner);
using (IEnumerator <SmartEnumerable <string> .Entry> iterator = smart.GetEnumerator())
{
iterator.MoveNext();
var current = iterator.Current;
Assert.AreEqual(expected, current.Value);
}
}
public void DoubleEntryEnumerable()
{
List<string> list = new List<string>();
list.Add("x");
list.Add("y");
SmartEnumerable<string> subject = new SmartEnumerable<string>(list);
using (IEnumerator<SmartEnumerable<string>.Entry> iterator = subject.GetEnumerator())
{
Assert.IsTrue(iterator.MoveNext());
Assert.IsTrue(iterator.Current.IsFirst);
Assert.IsFalse(iterator.Current.IsLast);
Assert.AreEqual("x", iterator.Current.Value);
Assert.AreEqual(0, iterator.Current.Index);
Assert.IsTrue(iterator.MoveNext());
Assert.IsFalse(iterator.Current.IsFirst);
Assert.IsTrue(iterator.Current.IsLast);
Assert.AreEqual("y", iterator.Current.Value);
Assert.AreEqual(1, iterator.Current.Index);
Assert.IsFalse(iterator.MoveNext());
}
}