code: func NotZerof(t TestingT, i interface{}, msg string, args ...interface{}) bool {
  	if h, ok := t.(tHelper); ok {
  		h.Helper()
  	}
  	return NotZero(t, i, append([]interface{}{msg}, args...)...)
  }
docs: // NotZerof asserts that i is not the zero value for its type.