// 12 digits, truncates
	{"2021-09-29T16:04:33.000123456789Z", 123_456},
	// 15 digits, truncates
	{"2021-09-29T16:04:33.9999999999999999Z", 999_999_999},
}

// Issue 48685 and 54567.
func TestParseFractionalSecondsLongerThanNineDigits(t *testing.T) {
	for _, tt := range longFractionalDigitsTests {
		for _, format := range []string{RFC3339, RFC3339Nano} {
			tm, err := Parse(format, tt.value)
			if err != nil {