def test_other_letters(self):
self.assertEqual("y^2-1", polynom.simplify("(y+1)(y-1)"))
self.assertRaises(ValueError, polynom.simplify, "(x+1)(X-1)")
self.assertRaises(ValueError, polynom.simplify, "xy")
self.assertRaises(ValueError, polynom.simplify, "x+y")
def test_exponentiation(self):
self.assertEqual("20x^8", polynom.simplify("2x^8*10"))
self.assertEqual("8x^3", polynom.simplify("(2x)^3"))
self.assertEqual("8x^3", polynom.simplify("(2x)^(3)"))
self.assertEqual("16x^4", polynom.simplify("(2x)^((3)+(1))"))
self.assertEqual("16x^4", polynom.simplify("((1+1)(x+0))^((3)+(1))"))
self.assertEqual("65610", polynom.simplify("(2+1)^8*10"))
self.assertEqual("16", polynom.simplify("2^2^2"))
self.assertEqual("16", polynom.simplify("(1+1)^(2+0)^(2)"))
self.assertEqual("0", polynom.simplify("0^2"))
self.assertEqual("1", polynom.simplify("2^0"))
self.assertEqual("1", polynom.simplify("x^0"))
self.assertEqual("x", polynom.simplify("x^1"))
def test_with_spaces(self):
self.assertEqual("3x^3-9x", polynom.simplify(" 2 x ^ 3 + x \t (x^2-9) "))
def test(self):
self.assertEqual("", polynom.simplify(""))
self.assertEqual("1", polynom.simplify("1"))
self.assertEqual("0", polynom.simplify("0"))
self.assertEqual("0", polynom.simplify("00"))
self.assertEqual("4x^2+4x+1", polynom.simplify("(2x+1)(2x+1)"))
self.assertEqual("4x^2+4x+1", polynom.simplify("(2x+1)*(2x+1)"))
self.assertEqual("4x^2+4x+1", polynom.simplify("(2x+1)^2"))
self.assertEqual("4x^2+4x+1", polynom.simplify("(2x+1)^(1+1)"))
self.assertEqual("4x^2", polynom.simplify("(2x)^(1+1)"))
self.assertEqual("x^8+8x^7+28x^6+56x^5+70x^4+56x^3+28x^2+8x+1", polynom.simplify("(x+1)*(x+1)*(x+1)*(x+1)*(x+1)*(x+1)*(x+1)*(x+1)"))
self.assertEqual("x^8+8x^7+28x^6+56x^5+70x^4+56x^3+28x^2+8x+1", polynom.simplify("(x+1)^(4+4)"))
self.assertEqual("x^2+x", polynom.simplify("+x(x+1)"))
self.assertEqual("-x^2-x", polynom.simplify("-x(x+1)"))
self.assertEqual("x^2+x", polynom.simplify("x(x+1)"))
self.assertEqual("27", polynom.simplify("-(-27)"))
self.assertEqual("-27", polynom.simplify("-(+27)"))
self.assertEqual("-27", polynom.simplify("+(-27)"))
self.assertEqual("x^3+3x^2+2x", polynom.simplify("x(x+1)(x+2)"))
self.assertEqual("x^2+x", polynom.simplify("x(x+1)"))
self.assertEqual("x^2+x", polynom.simplify("(x(x+1))"))
self.assertEqual("x^2+x+1", polynom.simplify("x+1+x^2"))
self.assertEqual("3x^3-9x", polynom.simplify("2x^3+x(x^2-9)"))
self.assertEqual("3x^3-9x", polynom.simplify("(2x^3+x(x^2-9))"))
self.assertEqual("3x^4-15x^3-9x^2+45x", polynom.simplify("(x-5)(2x^3+x(x^2-9))"))
self.assertEqual("x^2+3x+2", polynom.simplify("(x+1)(x+2)"))
self.assertEqual("-345", polynom.simplify("23(4-5)(7+8)"))
self.assertEqual("6x", polynom.simplify("3x*2"))
self.assertEqual("6x", polynom.simplify("3x*(2)"))
self.assertEqual("12x", polynom.simplify("3x*(2+2)"))
self.assertEqual("x^2-4", polynom.simplify("(x-2)*(x+2)"))
self.assertEqual("x^2-4", polynom.simplify("(x-2)(x+2)"))
self.assertEqual("1", polynom.simplify("0x+1"))
self.assertEqual("162x-1", polynom.simplify("-1+(5+4)(18x)"))
self.assertEqual("-18x^2", polynom.simplify("(-18x)x"))
self.assertEqual("-162x^2-x", polynom.simplify("-1x+(5+4)(-18x)x"))
self.assertEqual("30", polynom.simplify("5*6"))
self.assertEqual("30", polynom.simplify("(5)*(6)"))
self.assertEqual("30x^4", polynom.simplify("x(5)x*x(6)x"))
self.assertEqual("256", polynom.simplify("2^8"))
self.assertEqual("65610", polynom.simplify("3^8*10"))
self.assertEqual("120", polynom.simplify("1*2*3*4*5"))
self.assertEqual("x^7-3x^6-2x^4+6x^3+x-3", polynom.simplify("(x-3)*(x^6-2x^3+1)"))
