@@ -0,0 +1,802 @@
+package com.fishercoder;%0A%0Aimport com.fishercoder.common.classes.TreeNode;%0Aimport com.fishercoder.common.utils.TreeUtils;%0Aimport com.fishercoder.solutions._270;%0Aimport org.junit.BeforeClass;%0Aimport org.junit.Test;%0A%0Aimport java.util.Arrays;%0A%0Aimport static junit.framework.Assert.assertEquals;%0A%0Apublic class _270Test %7B%0A    private static _270.Solution1 solution1;%0A    private static int expected;%0A    private static TreeNode root;%0A    private static double target;%0A%0A    @BeforeClass%0A    public static void setup() %7B%0A        solution1 = new _270.Solution1();%0A    %7D%0A%0A    @Test%0A    public void test1() %7B%0A        root = TreeUtils.constructBinaryTree(Arrays.asList(4, 2, 5, 1, 3));%0A        expected = 4;%0A        target = 3.714286;%0A        assertEquals(expected, solution1.closestValue(root, target));%0A    %7D%0A%0A%7D%0A

add a test for 270