Add benchmarks.

Author: drupol

benchmarks/AbstractBench.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types = 1);
+
+namespace drupol\phptree\benchmarks;
+
+abstract class AbstractBench
+{
+    /**
+     * @return array
+     */
+    public function getData()
+    {
+        return \range(1, 100);
+    }
+}

benchmarks/DrupolPhpTreeBench.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types = 1);
+
+namespace drupol\phptree\benchmarks;
+
+use drupol\phptree\Node\ValueNode;
+use PhpBench\Benchmark\Metadata\Annotations\BeforeMethods;
+
+/**
+ * @Groups({"drupol/phptree"})
+ * @BeforeMethods({"initObject"})
+ */
+class DrupolPhpTreeBench extends AbstractBench
+{
+    /**
+     * @var \drupol\phptree\Node\NodeInterface
+     */
+    private $tree;
+
+    /**
+     * Init the object.
+     */
+    public function initObject()
+    {
+    }
+
+    /**
+     * @Revs({1, 100, 1000})
+     * @Iterations(5)
+     * @Warmup(10)
+     */
+    public function benchHash()
+    {
+        $this->tree = new ValueNode();
+
+        foreach ($this->getData() as $value) {
+            $this->tree->add(new ValueNode($value));
+        }
+    }
+}

composer.json

@@ -45,7 +45,8 @@
     },
     "autoload-dev": {
         "psr-4": {
-            "drupol\\phptree\\tests\\": "tests/src/"
+            "drupol\\phptree\\tests\\": "tests/src/",
+            "drupol\\phptree\\benchmarks\\": "benchmarks/"
         }
     },
     "config": {