17         $this->mixin = new \Magento\Setup\Model\Description\Mixin\HeaderMixin();
    23     public function testApply($subject, $expectedResult)
    25         $this->assertEquals($expectedResult, $this->mixin->apply($subject));
    36                 'Lorem ipsum dolor sit amet.' . PHP_EOL
    37                 . 
'Consectetur adipiscing elit.' . PHP_EOL
    38                 . 
'Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.',
    40                 '<h1>Lorem ipsum</h1>' . PHP_EOL
    41                 . 
'Lorem ipsum dolor sit amet.' . PHP_EOL
    42                 . 
'<h1>Consectetur</h1>' . PHP_EOL
    43                 . 
'Consectetur adipiscing elit.' . PHP_EOL
    44                 . 
'<h1>Sed do eiusmod</h1>' . PHP_EOL
    45                 . 
'Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.'