TEST(Matrix, ColAdd) { MatrixQ A = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}; MatrixQ B = {{-1, 2, 3}, {-1, 5, 6}, {-1, 8, 9}}; EXPECT_EQ(B, A.col_add(1, 0, -1_mpq)); }