public virtual void TestAll1()
{
IEnumerator <string> it = new FilterEnumerator <string>(set.GetEnumerator(), (s) => true);
Assert.IsTrue(it.MoveNext());
Assert.AreEqual("a", it.Current);
Assert.IsTrue(it.MoveNext());
Assert.AreEqual("b", it.Current);
Assert.IsTrue(it.MoveNext());
Assert.AreEqual("c", it.Current);
AssertNoMore(it);
}
public virtual void TestB1()
{
IEnumerator <string> it = new FilterEnumerator <string>(set.GetEnumerator(), (s) => "b".Equals(s, StringComparison.Ordinal));
Assert.IsTrue(it.MoveNext());
Assert.AreEqual("b", it.Current);
AssertNoMore(it);
}
public virtual void TestA2()
{
IEnumerator <string> it = new FilterEnumerator <string>(set.GetEnumerator(), (s) => "a".Equals(s, StringComparison.Ordinal));
// this time without check: Assert.IsTrue(it.hasNext());
it.MoveNext();
Assert.AreEqual("a", it.Current);
AssertNoMore(it);
}