Fixed build

composer.json

@@ -4,7 +4,12 @@
   "license": "MIT",
   "autoload": {
     "psr-4": {
-      "Javadev\\LeetCodePhp\\": ""
+      "\\": "Algorithms/s0001_two_sum"
+    }
+  },
+  "autoload-dev": {
+    "psr-4": {
+      "\\": "tests"
     }
   },
   "authors": [

tests/SolutionTest.php

@@ -0,0 +1,21 @@
+<?php
+
+use PHPUnit\Framework\TestCase;
+
+class SolutionTest extends TestCase {
+    public function testTwoSum() {
+        $this->assertEquals([0, 1], (new Solution())->twoSum([2, 7, 11, 15], 9));
+    }
+
+    public function testTwoSum2() {
+        $this->assertEquals([1, 2], (new Solution())->twoSum([3, 2, 4], 6));
+    }
+
+    public function testTwoSum3() {
+        $this->assertEquals([0, 1], (new Solution())->twoSum([3, 3], 6));
+    }
+
+    public function testTwoSum4() {
+        $this->assertEquals([-1, -1], (new Solution())->twoSum([3, 3], 7));
+    }
+}