code: def test_fock_space():
      f1 = FockSpace()
      f2 = FockSpace()
      assert isinstance(f1, FockSpace)
      assert f1.dimension is oo
      assert f1 == f2
  
file_path: sympy/sympy/physics/quantum/tests/test_hilbert.py
imports: from sympy.physics.quantum.hilbert import HilbertSpace, ComplexSpace, L2, FockSpace, TensorProductHilbertSpace, DirectSumHilbertSpace, TensorPowerHilbertSpace
  from sympy.core.numbers import oo
  from sympy.core.symbol import Symbol
  from sympy.printing.repr import srepr
  from sympy.printing.str import sstr
  from sympy.sets.sets import Interval
label_desc: Use image node_id 4 for calling a global function with example usage: test_fock_space() without return types