Add day 2

tests/Day2Test.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace Tests;
+
+use AdventOfCode21\Day2;
+
+/**
+ * @internal
+ */
+class Day2Test extends AbstractTestCase
+{
+    public static int $part1ExampleResult = 150;
+    public static int $part1Result = 1654760;
+
+    public static int $part2ExampleResult = 900;
+    public static int $part2Result = 1956047400;
+
+    public function setupDay(): Day2
+    {
+        return new class() extends Day2 {
+            use ReturnTestableResults;
+        };
+    }
+}