"YiiRequirementChecker" has been created as blank.

tests/unit/framework/requirements/YiiRequirementCheckerTest.php

+<?php
+
+require_once(realpath(__DIR__.'/../../../../yii/requirements/YiiRequirementChecker.php'));
+
+use yiiunit\TestCase;
+
+/**
+ * Test case for {@link YiiRequirementChecker}.
+ * @see YiiRequirementChecker
+ */
+class YiiRequirementCheckerTest extends TestCase
+{
+	public function testCreate() {
+		$requirementChecker = new YiiRequirementChecker();
+		$this->assertTrue(is_object($requirementChecker));
+	}
+}

yii/requirements/YiiRequirementChecker.php

+<?php
+/**
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+/**
+ * YiiRequirementChecker allows checking, if current system meets the requirements for running the application.
+ *
+ * @author Paul Klimov <klimov.paul@gmail.com>
+ * @since 2.0
+ */
+class YiiRequirementChecker
+{
+
+}