public void NAryMap_NonTrivial()
{
var map = new NAryMap <int, string>(2);
map[19, 23] = "Answer 1";
Assert.AreEqual("Answer 1", map[19, 23]);
map[19, 24] = "Answer 2";
Assert.AreEqual("Answer 2", map[19, 24]);
Assert.IsTrue(map.TryGetValue(new[] { 19, 23 }, out string answer1));
Assert.AreEqual("Answer 1", answer1);
Assert.IsTrue(map.TryGetValue(new[] { 19, 24 }, out string answer2));
Assert.AreEqual("Answer 2", answer2);
Assert.ThrowsException <ArgumentOutOfRangeException>(() => map[19] = "foo");
Assert.ThrowsException <ArgumentOutOfRangeException>(() => map[19, 21, 2] = "foo");
Assert.ThrowsException <ArgumentOutOfRangeException>(() => map[19]);
Assert.ThrowsException <ArgumentOutOfRangeException>(() => map[19, 21, 2]);
Assert.IsFalse(map.TryGetValue(new[] { 43 }, out _));
Assert.ThrowsException <KeyNotFoundException>(() => map[43]);
Assert.IsTrue(map.TryGetValue(19, out NAryMapOrLeaf <int, string> partial));
Assert.IsNotNull(partial.Map);
Assert.IsNull(partial.Leaf);
Assert.IsTrue(partial.Map.TryGetValue(23, out NAryMapOrLeaf <int, string> leaf1));
Assert.IsNull(leaf1.Map);
Assert.IsNotNull(leaf1.Leaf);
Assert.AreEqual("Answer 1", leaf1.Leaf);
Assert.IsTrue(partial.Map.TryGetValue(24, out NAryMapOrLeaf <int, string> leaf2));
Assert.IsNull(leaf2.Map);
Assert.IsNotNull(leaf2.Leaf);
Assert.AreEqual("Answer 2", leaf2.Leaf);
var entries = new List <KeyValuePair <IEnumerable <int>, string> >();
foreach (KeyValuePair <IEnumerable <int>, string> kv in ((IEnumerable)map))
{
entries.Add(kv);
}
Assert.AreEqual(2, entries.Count);
Assert.IsTrue(entries.Single(kv => kv.Key.SequenceEqual(new[] { 19, 23 })).Value == "Answer 1");
Assert.IsTrue(entries.Single(kv => kv.Key.SequenceEqual(new[] { 19, 24 })).Value == "Answer 2");
}
public void NAryMap_Degenerate()
{
var map = new NAryMap <int, string>(1);
map[42] = "Answer";
Assert.AreEqual("Answer", map[42]);
Assert.IsTrue(map.TryGetValue(new[] { 42 }, out string answer));
Assert.AreEqual("Answer", answer);
Assert.ThrowsException <ArgumentOutOfRangeException>(() => map[Array.Empty <int>()] = "foo");
Assert.ThrowsException <ArgumentOutOfRangeException>(() => map[42, 43] = "foo");
Assert.ThrowsException <ArgumentOutOfRangeException>(() => map[Array.Empty <int>()]);
Assert.ThrowsException <ArgumentOutOfRangeException>(() => map[42, 43]);
Assert.IsFalse(map.TryGetValue(new[] { 43 }, out _));
Assert.ThrowsException <KeyNotFoundException>(() => map[43]);
}
