public void Can_find_near()
{
var tree = new LcrsTrie('\0', false);
var near = tree.SemanticallyNear("ba", 1).Select(w => w.Value).ToList();
Assert.IsFalse(near.Any());
tree.Add("bad");
near = tree.SemanticallyNear("ba", 1).Select(w => w.Value).ToList();
Assert.AreEqual(1, near.Count);
Assert.IsTrue(near.Contains("bad"));
tree.Add("baby");
near = tree.SemanticallyNear("ba", 1).Select(w => w.Value).ToList();
Assert.AreEqual(1, near.Count);
Assert.IsTrue(near.Contains("bad"));
tree.Add("b");
near = tree.SemanticallyNear("ba", 1).Select(w => w.Value).ToList();
Assert.AreEqual(2, near.Count);
Assert.IsTrue(near.Contains("bad"));
Assert.IsTrue(near.Contains("b"));
near = tree.SemanticallyNear("ba", 2).Select(w => w.Value).ToList();
Assert.AreEqual(3, near.Count);
Assert.IsTrue(near.Contains("b"));
Assert.IsTrue(near.Contains("bad"));
Assert.IsTrue(near.Contains("baby"));
near = tree.SemanticallyNear("ba", 0).Select(w => w.Value).ToList();
Assert.AreEqual(0, near.Count);
tree.Add("bananas");
near = tree.SemanticallyNear("ba", 6).Select(w => w.Value).ToList();
Assert.AreEqual(4, near.Count);
Assert.IsTrue(near.Contains("b"));
Assert.IsTrue(near.Contains("bad"));
Assert.IsTrue(near.Contains("baby"));
Assert.IsTrue(near.Contains("bananas"));
near = tree.SemanticallyNear("bazy", 1).Select(w => w.Value).ToList();
Assert.AreEqual(1, near.Count);
Assert.IsTrue(near.Contains("baby"));
tree.Add("bank");
near = tree.SemanticallyNear("bazy", 3).Select(w => w.Value).ToList();
Assert.AreEqual(4, near.Count);
Assert.IsTrue(near.Contains("baby"));
Assert.IsTrue(near.Contains("bank"));
Assert.IsTrue(near.Contains("bad"));
Assert.IsTrue(near.Contains("b"));
}
