public void EntryAtReturnsNullOnMissingKey()
{
Dictionary <int, string> d = new Dictionary <int, string>();
d[1] = "a";
d[2] = "b";
IPersistentMap m = PersistentArrayMap.create(d);
Expect(m.entryAt(3), Null);
}
public void EntryAtReturnsEntryforKey()
{
Dictionary <int, string> d = new Dictionary <int, string>();
d[1] = "a";
d[2] = "b";
IPersistentMap m = PersistentArrayMap.create(d);
IMapEntry me = m.entryAt(1);
Expect(me.key(), EqualTo(1));
Expect(me.val(), EqualTo("a"));
}