public function testGetNumLazyLoadColumns()
 {
     $column1 = $this->getColumnMock('created_at');
     $column2 = $this->getColumnMock('updated_at', array('lazy' => true));
     $column3 = $this->getColumnMock('deleted_at', array('lazy' => true));
     $table = new Table('books');
     $table->addColumn($column1);
     $table->addColumn($column2);
     $table->addColumn($column3);
     $this->assertSame(2, $table->getNumLazyLoadColumns());
 }