code: def test_sin():
      a = sin(interval(0, np.pi / 4))
      assert a.start == np.sin(0)
      assert a.end == np.sin(np.pi / 4)
  
      a = sin(interval(-np.pi / 4, np.pi / 4))
      assert a.start == np.sin(-np.pi / 4)
      assert a.end == np.sin(np.pi / 4)
  
      a = sin(interval(np.pi / 4, 3 * np.pi / 4))
      assert a.start == np.sin(np.pi / 4)
      assert a.end == 1
  
      a = sin(interval(7 * np.pi / 6, 7 * np.pi / 4))
      assert a.start == -1
      assert a.end == np.sin(7 * np.pi / 6)
  
      a = sin(interval(0, 3 * np.pi))
      assert a.start == -1
      assert a.end == 1
  
      a = sin(interval(np.pi / 3, 7 * np.pi / 4))
      assert a.start == -1
      assert a.end == 1
  
      a = sin(np.pi / 4)
      assert a.start == np.sin(np.pi / 4)
      assert a.end == np.sin(np.pi / 4)
  
      a = sin(interval(1, 2, is_valid=False))
      assert a.is_valid is False
  
imports: from sympy.external import import_module
  from sympy.plotting.intervalmath import Abs, acos, acosh, And, asin, asinh, atan, atanh, ceil, cos, cosh, exp, floor, imax, imin, interval, log, log10, Or, sin, sinh, sqrt, tan, tanh
label_desc: Use image node_id 6 for calling a global function with example usage: test_sin() without return types