public function testAugmentBelowExceptionColumnssDoNotMatch()
{
$A = MatrixFactory::create([[1, 2, 3], [2, 3, 4], [3, 4, 5]]);
$B = MatrixFactory::create([[4, 5], [5, 6]]);
$this->setExpectedException('MathPHP\\Exception\\MatrixException');
$A->augmentBelow($B);
}