Inital commit after splitting from project

tests/WrapTest.php

@@ -0,0 +1,48 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tez\Utils\Tests\Arr;
+
+use PHPUnit\Framework\TestCase;
+use Tez\Utils\Arr\Wrap;
+
+final class WrapTest extends TestCase
+{
+    public function testWrapsScalarInArray(): void
+    {
+        self::assertSame(['hello'], Wrap::ensure('hello'));
+        self::assertSame([42], Wrap::ensure(42));
+        self::assertSame([3.14], Wrap::ensure(3.14));
+        self::assertSame([true], Wrap::ensure(true));
+    }
+
+    public function testReturnsArrayAsIs(): void
+    {
+        self::assertSame([1, 2, 3], Wrap::ensure([1, 2, 3]));
+        self::assertSame(['a' => 1], Wrap::ensure(['a' => 1]));
+        self::assertSame([], Wrap::ensure([]));
+    }
+
+    public function testNullReturnsEmptyArray(): void
+    {
+        self::assertSame([], Wrap::ensure(null));
+    }
+
+    public function testObjectIsWrapped(): void
+    {
+        $obj    = new \stdClass();
+        $result = Wrap::ensure($obj);
+
+        self::assertCount(1, $result);
+        self::assertSame($obj, $result[0]);
+    }
+
+    public function testAssociativeArrayIsReturnedAsIs(): void
+    {
+        $input  = ['key' => 'value', 'other' => 42];
+        $result = Wrap::ensure($input);
+
+        self::assertSame($input, $result);
+    }
+}