sympycore/ring/tests/test_exp_coeff_dict.py

   1
   2 from sympycore import Ring, heads, core
   3
   4 P = Ring.Polynom
   5
   6 def test_zero():
   7     x,y,z = map(Ring, 'xyz')
   8     zero =  P(variables=(x,y))
   9     assert zero.pair==(heads.EXP_COEFF_DICT, ((x,y), {})), `zero.pair`
  10     assert zero==0
  11     zero = ((zero + x) - x)
  12     assert zero.pair==(heads.EXP_COEFF_DICT, ((x,y), {})), `zero.pair`
  13     assert zero==0,`zero`
  14
  15
  16 def test_one():
  17     x,y,z = map(Ring, 'xyz')
  18     one = Ring.Polynom(1,variables=(x,y))
  19     assert one.pair == (heads.EXP_COEFF_DICT, ((x, y), {core.IntegerList([0,0]):1})), `one.pair`
  20     assert one==1
  21     one = Ring.Polynom(x,variables=(x,y))/x
  22     assert one.pair == (heads.EXP_COEFF_DICT, ((), {core.IntegerList([]):1})), `one.pair`
  23     assert one==1
  24
  25 def test_simple():
  26     x,y,z = map(Ring, 'xyz')
  27