use ; module test_m_scaling() { echo("==== test_m_scaling ===="); expected = [[2, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]; actual = m_scaling([2, 1, 1]); assert(expected == actual); } test_m_scaling();