MatthiasMullie\Minify\CSS::setImportExtensions PHP Method

    public function setImportExtensions(array $extensions)
    {
        $this->importExtensions = $extensions;
    }

 /**
  * Test minifier import configuration methods.
  *
  * @test
  */
 public function setConfig()
 {
     $this->minifier->setMaxImportSize(10);
     $this->minifier->setImportExtensions(array('gif' => 'data:image/gif'));
     $object = new ReflectionObject($this->minifier);
     $property = $object->getProperty('maxImportSize');
     $property->setAccessible(true);
     $this->assertEquals($property->getValue($this->minifier), 10);
     $property = $object->getProperty('importExtensions');
     $property->setAccessible(true);
     $this->assertEquals($property->getValue($this->minifier), array('gif' => 'data:image/gif'));
 }