code: def test_interpolate():
      assert interpolate([1, 4, 9, 16], x) == x**2
      assert (
          interpolate([1, 4, 9, 25], x)
          == S(3) * x**3 / 2 - S(8) * x**2 + S(33) * x / 2 - 9
      )
      assert interpolate([(1, 1), (2, 4), (3, 9)], x) == x**2
      assert interpolate([(1, 2), (2, 5), (3, 10)], x) == 1 + x**2
      assert interpolate({1: 2, 2: 5, 3: 10}, x) == 1 + x**2
      assert (
          interpolate({5: 2, 7: 5, 8: 10, 9: 13}, x)
          == -S(13) * x**3 / 24
          + S(12) * x**2
          - S(2003) * x / 24
          + 187
      )
      assert (
          interpolate([(1, 3), (0, 6), (2, 5), (5, 7), (-2, 4)], x)
          == S(-61) * x**4 / 280
          + S(247) * x**3 / 210
          + S(139) * x**2 / 280
          - S(1871) * x / 420
          + 6
      )
      assert interpolate((9, 4, 9), 3) == 9
      assert interpolate((1, 9, 16), 1) is S.One
      assert interpolate(((x, 1), (2, 3)), x) is S.One
      assert interpolate({x: 1, 2: 3}, x) is S.One
      assert interpolate(((2, x), (1, 3)), x) == x**2 - 4 * x + 6
  
file_path: sympy/sympy/polys/tests/test_polyfuncs.py
imports: from sympy.polys.polyfuncs import symmetrize, horner, interpolate, rational_interpolate, viete
  from sympy.polys.polyerrors import MultivariatePolynomialError
  from sympy.core.singleton import S
  from sympy.core.symbol import symbols
  from sympy.testing.pytest import raises
  from sympy.abc import a, b, c, d, e, x, y, z
label_desc: Use image node_id 3 for calling a global function with example usage: test_interpolate() without return types