code: func Samef(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
  	if h, ok := t.(tHelper); ok {
  		h.Helper()
  	}
  	return Same(t, expected, actual, append([]interface{}{msg}, args...)...)
  }
docs: // Samef asserts that two pointers reference the same object.
  //
  //    assert.Samef(t, ptr1, ptr2, "error message %s", "formatted")
  //
  // Both arguments must be pointer variables. Pointer variable sameness is
  // determined based on the equality of both type and value.