text: # -*- coding: utf-8 -*-
  from sympy.core.function import Function
  from sympy.integrals.integrals import Integral
  from sympy.printing.latex import latex
  from sympy.printing.pretty import pretty as xpretty
  from sympy.vector import CoordSys3D, Del, Vector, express
  from sympy.abc import a, b, c
  from sympy.testing.pytest import XFAIL
  
  
  def pretty(expr):
      """ASCII pretty-printing"""
      return xpretty(expr, use_unicode=False, wrap_line=False)
  
  
  def upretty(expr):
      """Unicode pretty-printing"""
      return xpretty(expr, use_unicode=True, wrap_line=False)
  
  
  # Initialize the basic and tedious vector/dyadic expressions
  # needed for testing.
  # Some of the pretty forms shown denote how the expressions just
  # above them should look with pretty printing.
  N = CoordSys3D('N')
  C = N.orient_new_axis('C', a, N.k)  # type: ignore
  v = []
  d = []
  v.append(Vector.zero)
  v.append(N.i)  # type: ignore
  v.append(-N.i)  # type: ignore
  v.append(N.i + N.j)  # type: ignore
  v.append(a*N.i)  # type: ignore
  v.append(a*N.i - b*N.j)  # type: ignore
  v.append((a**2 + N.x)*N.i + N.k)  # type: ignore
  v.append((a**2 + b)*N.i + 3*(C.y - c)*N.k)  # type: ignore
  f = Function('f')
  v.append(N.j - (Integral(f(b)) - C.x**2)*N.k)  # type: ignore
  upretty_v_8 = """\
        ⎛   2   ⌠        ⎞    \n\
  j_N + ⎜x_C  - ⎮ f(b) db⎟ k_N\n\
        ⎝       ⌡        ⎠    \
  """
  pretty_v_8 = """\
  j_N + /         /       \\\n\
        |   2    |        |\n\
        |x_C  -  | f(b) db|\n\
        |        |        |\n\
        \\       /         / \
  """
  
  v.append(N.i + C.k)  # type: ignore
  v.append(express(N.i, C))  # type: ignore
  v.append((a**2 + b)*N.i + (Integral(f(b)))*N.k)  # type: ignore
  upretty_v_11 = """\
  ⎛ 2    ⎞        ⎛⌠        ⎞    \n\
  ⎝a  + b⎠ i_N  + ⎜⎮ f(b) db⎟ k_N\n\
                  ⎝⌡        ⎠    \
  """
  pretty_v_11 = """\
  / 2    \\ + /  /       \\\n\
  \\a  + b/ i_N| |        |\n\
             | | f(b) db|\n\
             | |        |\n\
             \\/         / \
  """
  
  for x in v:
      d.append(x | N.k)  # type: ignore
  s = 3*N.x**2*C.y  # type: ignore
  upretty_s = """\
           2\n\
  3⋅y_C⋅x_N \
  """
  pretty_s = """\
           2\n\
  3*y_C*x_N \
  """
  
  # This is the pretty form for ((a**2 + b)*N.i + 3*(C.y - c)*N.k) | N.k
  upretty_d_7 = """\
  ⎛ 2    ⎞                                     \n\
  ⎝a  + b⎠ (i_N|k_N)  + (3⋅y_C - 3⋅c) (k_N|k_N)\
  """
  pretty_d_7 = """\
  / 2    \\ (i_N|k_N) + (3*y_C - 3*c) (k_N|k_N)\n\
  \\a  + b/                                    \
  """
  
  
  def test_str_printing():
      assert str(v[0]) == '0'
      assert str(v[1]) == 'N.i'
      assert str(v[2]) == '(-1)*N.i'
      assert str(v[3]) == 'N.i + N.j'
      assert str(v[8]) == 'N.j + (C.x**2 - Integral(f(b), b))*N.k'
      assert str(v[9]) == 'C.k + N.i'
      assert str(s) == '3*C.y*N.x**2'
      assert str(d[0]) == '0'
      assert str(d[1]) == '(N.i|N.k)'
      assert str(d[4]) == 'a*(N.i|N.k)'
      assert str(d[5]) == 'a*(N.i|N.k) + (-b)*(N.j|N.k)'
      assert str(d[8]) == ('(N.j|N.k) + (C.x**2 - ' +
                           'Integral(f(b), b))*(N.k|N.k)')
  
  
  @XFAIL
  def test_pretty_printing_ascii():
      assert pretty(v[0]) == '0'
      assert pretty(v[1]) == 'i_N'
      assert pretty(v[5]) == '(a) i_N + (-b) j_N'
      assert pretty(v[8]) == pretty_v_8
      assert pretty(v[2]) == '(-1) i_N'
      assert pretty(v[11]) == pretty_v_11
      assert pretty(s) == pretty_s
      assert pretty(d[0]) == '(0|0)'
      assert pretty(d[5]) == '(a) (i_N|k_N) + (-b) (j_N|k_N)'
      assert pretty(d[7]) == pretty_d_7
      assert pretty(d[10]) == '(cos(a)) (i_C|k_N) + (-sin(a)) (j_C|k_N)'
  
  
  def test_pretty_print_unicode_v():
      assert upretty(v[0]) == '0'
      assert upretty(v[1]) == 'i_N'
      assert upretty(v[5]) == '(a) i_N + (-b) j_N'
      # Make sure the printing works in other objects
      assert upretty(v[5].args) == '((a) i_N, (-b) j_N)'
      assert upretty(v[8]) == upretty_v_8
      assert upretty(v[2]) == '(-1) i_N'
      assert upretty(v[11]) == upretty_v_11
      assert upretty(s) == upretty_s
      assert upretty(d[0]) == '(0|0)'
      assert upretty(d[5]) == '(a) (i_N|k_N) + (-b) (j_N|k_N)'
      assert upretty(d[7]) == upretty_d_7
      assert upretty(d[10]) == '(cos(a)) (i_C|k_N) + (-sin(a)) (j_C|k_N)'
  
  
  def test_latex_printing():
      assert latex(v[0]) == '\\mathbf{\\hat{0}}'
      assert latex(v[1]) == '\\mathbf{\\hat{i}_{N}}'
      assert latex(v[2]) == '- \\mathbf{\\hat{i}_{N}}'
      assert latex(v[5]) == ('\\left(a\\right)\\mathbf{\\hat{i}_{N}} + ' +
                             '\\left(- b\\right)\\mathbf{\\hat{j}_{N}}')
      assert latex(v[6]) == ('\\left(\\mathbf{{x}_{N}} + a^{2}\\right)\\mathbf{\\hat{i}_' +
                            '{N}} + \\mathbf{\\hat{k}_{N}}')
      assert latex(v[8]) == ('\\mathbf{\\hat{j}_{N}} + \\left(\\mathbf{{x}_' +
                             '{C}}^{2} - \\int f{\\left(b \\right)}\\,' +
                             ' db\\right)\\mathbf{\\hat{k}_{N}}')
      assert latex(s) == '3 \\mathbf{{y}_{C}} \\mathbf{{x}_{N}}^{2}'
      assert latex(d[0]) == '(\\mathbf{\\hat{0}}|\\mathbf{\\hat{0}})'
      assert latex(d[4]) == ('\\left(a\\right)\\left(\\mathbf{\\hat{i}_{N}}{\\middle|}' +
                             '\\mathbf{\\hat{k}_{N}}\\right)')
      assert latex(d[9]) == ('\\left(\\mathbf{\\hat{k}_{C}}{\\middle|}' +
                             '\\mathbf{\\hat{k}_{N}}\\right) + \\left(' +
                             '\\mathbf{\\hat{i}_{N}}{\\middle|}\\mathbf{' +
                             '\\hat{k}_{N}}\\right)')
      assert latex(d[11]) == ('\\left(a^{2} + b\\right)\\left(\\mathbf{\\hat{i}_{N}}' +
                              '{\\middle|}\\mathbf{\\hat{k}_{N}}\\right) + ' +
                              '\\left(\\int f{\\left(b \\right)}\\, db\\right)\\left(' +
                              '\\mathbf{\\hat{k}_{N}}{\\middle|}\\mathbf{' +
                              '\\hat{k}_{N}}\\right)')
  
  def test_issue_23058():
      from sympy import symbols, sin, cos, pi, UnevaluatedExpr
  
      delop = Del()
      CC_   = CoordSys3D("C")
      y     = CC_.y
      xhat  = CC_.i
  
      t = symbols("t")
      ten = symbols("10", positive=True)
      eps, mu = 4*pi*ten**(-11), ten**(-5)
  
      Bx = 2 * ten**(-4) * cos(ten**5 * t) * sin(ten**(-3) * y)
      vecB = Bx * xhat
      vecE = (1/eps) * Integral(delop.cross(vecB/mu).doit(), t)
      vecE = vecE.doit()
  
      vecB_str = """\
  ⎛     ⎛y_C⎞    ⎛  5  ⎞⎞    \n\
  ⎜2⋅sin⎜───⎟⋅cos⎝10 ⋅t⎠⎟ i_C\n\
  ⎜     ⎜  3⎟           ⎟    \n\
  ⎜     ⎝10 ⎠           ⎟    \n\
  ⎜─────────────────────⎟    \n\
  ⎜           4         ⎟    \n\
  ⎝         10          ⎠    \
  """
      vecE_str = """\
  ⎛   4    ⎛  5  ⎞    ⎛y_C⎞ ⎞    \n\
  ⎜-10 ⋅sin⎝10 ⋅t⎠⋅cos⎜───⎟ ⎟ k_C\n\
  ⎜                   ⎜  3⎟ ⎟    \n\
  ⎜                   ⎝10 ⎠ ⎟    \n\
  ⎜─────────────────────────⎟    \n\
  ⎝           2⋅π           ⎠    \
  """
  
      assert upretty(vecB) == vecB_str
      assert upretty(vecE) == vecE_str
  
      ten = UnevaluatedExpr(10)
      eps, mu = 4*pi*ten**(-11), ten**(-5)
  
      Bx = 2 * ten**(-4) * cos(ten**5 * t) * sin(ten**(-3) * y)
      vecB = Bx * xhat
  
      vecB_str = """\
  ⎛    -4    ⎛    5⎞    ⎛      -3⎞⎞     \n\
  ⎝2⋅10  ⋅cos⎝t⋅10 ⎠⋅sin⎝y_C⋅10  ⎠⎠ i_C \
  """
      assert upretty(vecB) == vecB_str
  
  def test_custom_names():
      A = CoordSys3D('A', vector_names=['x', 'y', 'z'],
                     variable_names=['i', 'j', 'k'])
      assert A.i.__str__() == 'A.i'
      assert A.x.__str__() == 'A.x'
      assert A.i._pretty_form == 'i_A'
      assert A.x._pretty_form == 'x_A'
      assert A.i._latex_form == r'\mathbf{{i}_{A}}'
      assert A.x._latex_form == r"\mathbf{\hat{x}_{A}}"
  