public function testGetLabel()
 {
     $column = new Column('test_name', 'testField');
     $this->assertEquals('test_name', $column->getLabel());
     $column = new Column('test_name', 'testField', ['label' => 'Test label']);
     $this->assertEquals('Test label', $column->getLabel());
     $column = new Column('test_name', 'testField', ['label' => false]);
     $this->assertEquals('', $column->getLabel());
     $column = new Column('test_name', 'testField', ['label' => 42]);
     $this->setExpectedException('\\Exception', 'invalid label option: 42');
     $column->getLabel();
 }