old_contents: from symengine.utilities import raises
  from symengine import (Symbol, sin, cos, Integer, Add, I, RealDouble, ComplexDouble, sqrt)
  
  from unittest.case import SkipTest
  
  def test_eval_double1():
      x = Symbol("x")
      y = Symbol("y")
      e = sin(x)**2 + cos(x)**2
      e = e.subs(x, 7)
      assert abs(e.n(real=True) - 1) < 1e-9
      assert abs(e.n() - 1) < 1e-9
  
  
  def test_eval_double2():
      x = Symbol("x")
      e = sin(x)**2 + sqrt(2)
      raises(RuntimeError, lambda: e.n(real=True))
      assert abs(e.n() - x**2 - 1.414) < 1e-3
  
  def test_n():
      x = Symbol("x")
      raises(RuntimeError, lambda: x.n(real=True))
      assert x.n() == x + 0.0
  
      x = 2 + I
      raises(RuntimeError, lambda: (x.n(real=True)))
  
      x = sqrt(Integer(4))
      y = RealDouble(2.0)
      assert x.n(real=True) == y
  
      x = 1 + 2*I
      y = 1.0 + 2.0*I
      assert x.n() == y
  
  
  def test_n_mpfr():
      x = sqrt(Integer(2))
      try:
          from symengine import RealMPFR
          y = RealMPFR('1.41421356237309504880169', 75)
          assert x.n(75, real=True) == y
      except ImportError:
          raises(ValueError, lambda: (x.n(75, real=True)))
          raises(ValueError, lambda: (x.n(75)))
          raise SkipTest("No MPFR support")
  
  
  def test_n_mpc():
      x = sqrt(Integer(2)) + 3*I
      try:
          from symengine import ComplexMPC
          y = ComplexMPC('1.41421356237309504880169', '3.0', 75)
          assert x.n(75) == y
      except ImportError:
          raises(Exception, lambda: (x.n(75, real=True)))
          raises(ValueError, lambda: (x.n(75, real=False)))
          raises(ValueError, lambda: (x.n(75)))
          raise SkipTest("No MPC support")
  
  
  def test_rel():
      x = Symbol("x")
      y = Symbol("y")
      ex = (x + y < x)
      assert repr(ex) == "x + y < x"
  
new_contents: from symengine.utilities import raises
  from symengine import (Symbol, sin, cos, Integer, Add, I, RealDouble, ComplexDouble, sqrt)
  
  from unittest.case import SkipTest
  
  def test_eval_double1():
      x = Symbol("x")
      y = Symbol("y")
      e = sin(x)**2 + cos(x)**2
      e = e.subs(x, 7)
      assert abs(e.n(real=True) - 1) < 1e-9
      assert abs(e.n() - 1) < 1e-9
  
  
  def test_eval_double2():
      x = Symbol("x")
      e = sin(x)**2 + sqrt(2)
      raises(RuntimeError, lambda: e.n(real=True))
      assert abs(e.n() - sin(x)**2.0 - 1.414) < 1e-3
  
  def test_n():
      x = Symbol("x")
      raises(RuntimeError, lambda: x.n(real=True))
      assert x.n() == x + 0.0
  
      x = 2 + I
      raises(RuntimeError, lambda: (x.n(real=True)))
  
      x = sqrt(Integer(4))
      y = RealDouble(2.0)
      assert x.n(real=True) == y
  
      x = 1 + 2*I
      y = 1.0 + 2.0*I
      assert x.n() == y
  
  
  def test_n_mpfr():
      x = sqrt(Integer(2))
      try:
          from symengine import RealMPFR
          y = RealMPFR('1.41421356237309504880169', 75)
          assert x.n(75, real=True) == y
      except ImportError:
          raises(ValueError, lambda: (x.n(75, real=True)))
          raises(ValueError, lambda: (x.n(75)))
          raise SkipTest("No MPFR support")
  
  
  def test_n_mpc():
      x = sqrt(Integer(2)) + 3*I
      try:
          from symengine import ComplexMPC
          y = ComplexMPC('1.41421356237309504880169', '3.0', 75)
          assert x.n(75) == y
      except ImportError:
          raises(Exception, lambda: (x.n(75, real=True)))
          raises(ValueError, lambda: (x.n(75, real=False)))
          raises(ValueError, lambda: (x.n(75)))
          raise SkipTest("No MPC support")
  
  
  def test_rel():
      x = Symbol("x")
      y = Symbol("y")
      ex = (x + y < x)
      assert repr(ex) == "x + y < x"
  
subject: Fix wrong test