public void InverseToStringTest() { var matrix = new Matrix(new[] { new Maths.Expressions.Matrices.Vector(new[] { new Number(1), new Number(-2) }), new Maths.Expressions.Matrices.Vector(new[] { new Number(4), new Number(0) }) }); var exp = new Inverse(matrix); Assert.Equal("inverse({{1, -2}, {4, 0}})", exp.ToString(commoonFormatter)); }