code: def test_equal():
      """Test for equality"""
      assert Q.positive(x) == Q.positive(x)
      assert Q.positive(x) != ~Q.positive(x)
      assert ~Q.positive(x) == ~Q.positive(x)
  
imports: from sympy.abc import x, y
  from sympy.assumptions.assume import global_assumptions
  from sympy.assumptions.ask import Q
  from sympy.printing import pretty
label_desc: Use image node_id 1 for calling a global function with example usage: test_equal() without return types