public function testToOptionArray()
{
$defaultLabel = (string) new \Magento\Framework\Phrase('-- No Theme --');
$data = ['value' => '1', 'label' => 'Label1'];
$this->labelList->expects($this->once())->method('getLabels')->willReturn([$data]);
$result = $this->model->toOptionArray();
$this->assertTrue(is_array($result));
$this->assertEquals(2, count($result));
$this->assertEquals($defaultLabel, $result[0]['label']);
$this->assertEquals($data['label'], $result[1]['label']);
}
