AC-956: Create unit test for Magento2\Less\ZeroUnitsSniff check

Magento2/Sniffs/Less/ZeroUnitsSniff.php

@@ -14,7 +14,7 @@
  * Ensure that units for 0 is not specified
  * Omit leading "0"s in values, use dot instead
  *
- * @link https://devdocs.magento.com/guides/v2.4/coding-standards/code-standard-less.html#and-units
+ * @link https://devdocs.magento.com/guides/v2.4/coding-standards/code-standard-less.html#0-and-units
  * @link https://devdocs.magento.com/guides/v2.4/coding-standards/code-standard-less.html#floating-values
  */
 class ZeroUnitsSniff implements Sniff

Magento2/Tests/Less/ZeroUnitsUnitTest.less

@@ -0,0 +1,14 @@
+// /**
+//  * Copyright © Magento, Inc. All rights reserved.
+//  * See COPYING.txt for license details.
+//  */
+
+.my{
+  border-width: 0px;
+  margin-left: 0.5rem;
+}
+
+.foo {
+  border-width: 0;
+  margin-left: .5rem;
+}

Magento2/Tests/Less/ZeroUnitsUnitTest.php

@@ -0,0 +1,28 @@
+<?php
+/**
+ * Copyright © Magento. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento2\Tests\Less;
+
+class ZeroUnitsUnitTest extends AbstractLessSniffUnitTestCase
+{
+    /**
+     * @inheritdoc
+     */
+    public function getErrorList()
+    {
+        return [
+            7 => 1,
+            8 => 1,
+        ];
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getWarningList()
+    {
+        return [];
+    }
+}