yii2/tests/unit/framework/BaseYiiTest.php

<?php
namespace yiiunit\framework;

use Yii;
use yiiunit\TestCase;

/**
 * BaseYiiTest
 * @group base
 */
class BaseYiiTest extends TestCase
{
    public $aliases;

    protected function setUp()
    {
        parent::setUp();
        $this->aliases = Yii::$aliases;
    }

    protected function tearDown()
    {
        parent::tearDown();
        Yii::$aliases = $this->aliases;
    }

    public function testAlias()
    {
        $this->assertEquals(YII2_PATH, Yii::getAlias('@yii'));

        Yii::$aliases = [];
        $this->assertFalse(Yii::getAlias('@yii', false));

        Yii::setAlias('@yii', '/yii/framework');
        $this->assertEquals('/yii/framework', Yii::getAlias('@yii'));
        $this->assertEquals('/yii/framework/test/file', Yii::getAlias('@yii/test/file'));
        Yii::setAlias('@yii/gii', '/yii/gii');
        $this->assertEquals('/yii/framework', Yii::getAlias('@yii'));
        $this->assertEquals('/yii/framework/test/file', Yii::getAlias('@yii/test/file'));
        $this->assertEquals('/yii/gii', Yii::getAlias('@yii/gii'));
        $this->assertEquals('/yii/gii/file', Yii::getAlias('@yii/gii/file'));

        Yii::setAlias('@tii', '@yii/test');
        $this->assertEquals('/yii/framework/test', Yii::getAlias('@tii'));

        Yii::setAlias('@yii', null);
        $this->assertFalse(Yii::getAlias('@yii', false));
        $this->assertEquals('/yii/gii/file', Yii::getAlias('@yii/gii/file'));

        Yii::setAlias('@some/alias', '/www');
        $this->assertEquals('/www', Yii::getAlias('@some/alias'));
    }

    public function testGetVersion()
    {
        $this->assertTrue((boolean) preg_match('~\d+\.\d+(?:\.\d+)?(?:-\w+)?~', \Yii::getVersion()));
    }

    public function testPowered()
    {
        $this->assertTrue(is_string(Yii::powered()));
    }
}