public function testGetLabel()
 {
     $this->assertEmpty($this->_model->getLabel());
     $this->_model->setProductAttribute(new \Magento\Framework\Object(['store_label' => 'Store Label']));
     $this->assertEquals('Store Label', $this->_model->getLabel());
     $this->_model->setUseDefault(1)->setProductAttribute(new \Magento\Framework\Object(['store_label' => 'Other Label']));
     $this->assertEquals('Other Label', $this->_model->getLabel());
 }