Essence\MediaTest::testSetDefault PHP Method

    public function testSetDefault()
    {
        $this->Media->setDefault('one', 2);
        $this->assertEquals(1, $this->Media->get('one'));
        $ref = $this->Media->setDefault('three', 3);
        $this->assertEquals(3, $this->Media->get('three'));
        $this->assertEquals($this->Media, $ref);
    }