// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package strconv_test
import (
"errors"
"fmt"
"reflect"
. "strconv"
"testing"
)
type parseUint64Test struct {
in string
out uint64
err error
}
var parseUint64Tests = []parseUint64Test{
{"", 0, ErrSyntax},
{"0", 0, nil},
{"1", 1, nil},
{"12345", 12345, nil},
{"012345", 12345, nil},
{"12345x", 0, ErrSyntax},
{"98765432100", 98765432100, nil},
{"18446744073709551615", 1<<64 - 1, nil},
{"18446744073709551616", 1<<64 - 1, ErrRange},
{"18446744073709551620", 1<<64 - 1, ErrRange},
{"1_2_3_4_5", 0, ErrSyntax}, // base=10 so no underscores allowed
{"_12345", 0, ErrSyntax},
{"1__2345", 0, ErrSyntax},
{"12345_", 0, ErrSyntax},
}
type parseUint64BaseTest struct {
in string
base int
out uint64
err error
}
var parseUint64BaseTests = []parseUint64BaseTest{
{"", 0, 0, ErrSyntax},
{"0", 0, 0, nil},
{"0x", 0, 0, ErrSyntax},
{"0X", 0, 0, ErrSyntax},
{"1", 0, 1, nil},
{"12345", 0, 12345, nil},
{"012345", 0, 012345, nil},
{"0x12345", 0, 0x12345, nil},
{"0X12345", 0, 0x12345, nil},
{"12345x", 0, 0, ErrSyntax},
{"0xabcdefg123", 0, 0, ErrSyntax},
{"123456789abc", 0, 0, ErrSyntax},
{"98765432100", 0, 98765432100, nil},
{"18446744073709551615", 0, 1<<64 - 1, nil},
{"18446744073709551616", 0, 1<<64 - 1, ErrRange},
{"18446744073709551620", 0, 1<<64 - 1, ErrRange},
{"0xFFFFFFFFFFFFFFFF", 0, 1<<64 - 1, nil},
{"0x10000000000000000", 0, 1<<64 - 1, ErrRange},
{"01777777777777777777777", 0, 1<<64 - 1, nil},
{"01777777777777777777778", 0, 0, ErrSyntax},
{"02000000000000000000000", 0, 1<<64 - 1, ErrRange},
{"0200000000000000000000", 0, 1 << 61, nil},
{"0b", 0, 0, ErrSyntax},
{"0B", 0, 0, ErrSyntax},
{"0b101", 0, 5, nil},
{"0B101", 0, 5, nil},
{"0o", 0, 0, ErrSyntax},
{"0O", 0, 0, ErrSyntax},
{"0o377", 0, 255, nil},
{"0O377", 0, 255, nil},
// underscores allowed with base == 0 only
{"1_2_3_4_5", 0, 12345, nil}, // base 0 => 10
{"_12345", 0, 0, ErrSyntax},
{"1__2345", 0, 0, ErrSyntax},
{"12345_", 0, 0, ErrSyntax},
{"1_2_3_4_5", 10, 0, ErrSyntax}, // base 10
{"_12345", 10, 0, ErrSyntax},
{"1__2345", 10, 0, ErrSyntax},
{"12345_", 10, 0, ErrSyntax},
{"0x_1_2_3_4_5", 0, 0x12345, nil}, // base 0 => 16
{"_0x12345", 0, 0, ErrSyntax},
{"0x__12345", 0, 0, ErrSyntax},
{"0x1__2345", 0, 0, ErrSyntax},
{"0x1234__5", 0, 0, ErrSyntax},
{"0x12345_", 0, 0, ErrSyntax},
{"1_2_3_4_5", 16, 0, ErrSyntax}, // base 16
{"_12345", 16, 0, ErrSyntax},
{"1__2345", 16, 0, ErrSyntax},
{"1234__5", 16, 0, ErrSyntax},
{"12345_", 16, 0, ErrSyntax},
{"0_1_2_3_4_5", 0, 012345, nil}, // base 0 => 8 (0377)
{"_012345", 0, 0, ErrSyntax},
{"0__12345", 0, 0, ErrSyntax},
{"01234__5", 0, 0, ErrSyntax},
{"012345_", 0, 0, ErrSyntax},
{"0o_1_2_3_4_5", 0, 012345, nil}, // base 0 => 8 (0o377)
{"_0o12345", 0, 0, ErrSyntax},
{"0o__12345", 0, 0, ErrSyntax},
{"0o1234__5", 0, 0, ErrSyntax},
{"0o12345_", 0, 0, ErrSyntax},
{"0_1_2_3_4_5", 8, 0, ErrSyntax}, // base 8
{"_012345", 8, 0, ErrSyntax},
{"0__12345", 8, 0, ErrSyntax},
{"01234__5", 8, 0, ErrSyntax},
{"012345_", 8, 0, ErrSyntax},
{"0b_1_0_1", 0, 5, nil}, // base 0 => 2 (0b101)
{"_0b101", 0, 0, ErrSyntax},
{"0b__101", 0, 0, ErrSyntax},
{"0b1__01", 0, 0, ErrSyntax},
{"0b10__1", 0, 0, ErrSyntax},
{"0b101_", 0, 0, ErrSyntax},
{"1_0_1", 2, 0, ErrSyntax}, // base 2
{"_101", 2, 0, ErrSyntax},
{"1_01", 2, 0, ErrSyntax},
{"10_1", 2, 0, ErrSyntax},
{"101_", 2, 0, ErrSyntax},
}
type parseInt64Test struct {
in string
out int64
err error
}
var parseInt64Tests = []parseInt64Test{
{"", 0, ErrSyntax},
{"0", 0, nil},
{"-0", 0, nil},
{"1", 1, nil},
{"-1", -1, nil},
{"12345", 12345, nil},
{"-12345", -12345, nil},
{"012345", 12345, nil},
{"-012345", -12345, nil},
{"98765432100", 98765432100, nil},
{"-98765432100", -98765432100, nil},
{"9223372036854775807", 1<<63 - 1, nil},
{"-9223372036854775807", -(1<<63 - 1), nil},
{"9223372036854775808", 1<<63 - 1, ErrRange},
{"-9223372036854775808", -1 << 63, nil},
{"9223372036854775809", 1<<63 - 1, ErrRange},
{"-9223372036854775809", -1 << 63, ErrRange},
{"-1_2_3_4_5", 0, ErrSyntax}, // base=10 so no underscores allowed
{"-_12345", 0, ErrSyntax},
{"_12345", 0, ErrSyntax},
{"1__2345", 0, ErrSyntax},
{"12345_", 0, ErrSyntax},
}
type parseInt64BaseTest struct {
in string
base int
out int64
err error
}
var parseInt64BaseTests = []parseInt64BaseTest{
{"", 0, 0, ErrSyntax},
{"0", 0, 0, nil},
{"-0", 0, 0, nil},
{"1", 0, 1, nil},
{"-1", 0, -1, nil},
{"12345", 0, 12345, nil},
{"-12345", 0, -12345, nil},
{"012345", 0, 012345, nil},
{"-012345", 0, -012345, nil},
{"0x12345", 0, 0x12345, nil},
{"-0X12345", 0, -0x12345, nil},
{"12345x", 0, 0, ErrSyntax},
{"-12345x", 0, 0, ErrSyntax},
{"98765432100", 0, 98765432100, nil},
{"-98765432100", 0, -98765432100, nil},
{"9223372036854775807", 0, 1<<63 - 1, nil},
{"-9223372036854775807", 0, -(1<<63 - 1), nil},
{"9223372036854775808", 0, 1<<63 - 1, ErrRange},
{"-9223372036854775808", 0, -1 << 63, nil},
{"9223372036854775809", 0, 1<<63 - 1, ErrRange},
{"-9223372036854775809", 0, -1 << 63, ErrRange},
// other bases
{"g", 17, 16, nil},
{"10", 25, 25, nil},
{"holycow", 35, (((((17*35+24)*35+21)*35+34)*35+12)*35+24)*35 + 32, nil},
{"holycow", 36, (((((17*36+24)*36+21)*36+34)*36+12)*36+24)*36 + 32, nil},
// base 2
{"0", 2, 0, nil},
{"-1", 2, -1, nil},
{"1010", 2, 10, nil},
{"1000000000000000", 2, 1 << 15, nil},
{"111111111111111111111111111111111111111111111111111111111111111", 2, 1<<63 - 1, nil},
{"1000000000000000000000000000000000000000000000000000000000000000", 2, 1<<63 - 1, ErrRange},
{"-1000000000000000000000000000000000000000000000000000000000000000", 2, -1 << 63, nil},
{"-1000000000000000000000000000000000000000000000000000000000000001", 2, -1 << 63, ErrRange},
// base 8
{"-10", 8, -8, nil},
{"57635436545", 8, 057635436545, nil},
{"100000000", 8, 1 << 24, nil},
// base 16
{"10", 16, 16, nil},
{"-123456789abcdef", 16, -0x123456789abcdef, nil},
{"7fffffffffffffff", 16, 1<<63 - 1, nil},
// underscores
{"-0x_1_2_3_4_5", 0, -0x12345, nil},
{"0x_1_2_3_4_5", 0, 0x12345, nil},
{"-_0x12345", 0, 0, ErrSyntax},
{"_-0x12345", 0, 0, ErrSyntax},
{"_0x12345", 0, 0, ErrSyntax},
{"0x__12345", 0, 0, ErrSyntax},
{"0x1__2345", 0, 0, ErrSyntax},
{"0x1234__5", 0, 0, ErrSyntax},
{"0x12345_", 0, 0, ErrSyntax},
{"-0_1_2_3_4_5", 0, -012345, nil}, // octal
{"0_1_2_3_4_5", 0, 012345, nil}, // octal
{"-_012345", 0, 0, ErrSyntax},
{"_-012345", 0, 0, ErrSyntax},
{"_012345", 0, 0, ErrSyntax},
{"0__12345", 0, 0, ErrSyntax},
{"01234__5", 0, 0, ErrSyntax},
{"012345_", 0, 0, ErrSyntax},
}
type parseUint32Test struct {
in string
out uint32
err error
}
var parseUint32Tests = []parseUint32Test{
{"", 0, ErrSyntax},
{"0", 0, nil},
{"1", 1, nil},
{"12345", 12345, nil},
{"012345", 12345, nil},
{"12345x", 0, ErrSyntax},
{"987654321", 987654321, nil},
{"4294967295", 1<<32 - 1, nil},
{"4294967296", 1<<32 - 1, ErrRange},
{"1_2_3_4_5", 0, ErrSyntax}, // base=10 so no underscores allowed
{"_12345", 0, ErrSyntax},
{"_12345", 0, ErrSyntax},
{"1__2345", 0, ErrSyntax},
{"12345_", 0, ErrSyntax},
}
type parseInt32Test struct {
in string
out int32
err error
}
var parseInt32Tests = []parseInt32Test{
{"", 0, ErrSyntax},
{"0", 0, nil},
{"-0", 0, nil},
{"1", 1, nil},
{"-1", -1, nil},
{"12345", 12345, nil},
{"-12345", -12345, nil},
{"012345", 12345, nil},
{"-012345", -12345, nil},
{"12345x", 0, ErrSyntax},
{"-12345x", 0, ErrSyntax},
{"987654321", 987654321, nil},
{"-987654321", -987654321, nil},
{"2147483647", 1<<31 - 1, nil},
{"-2147483647", -(1<<31 - 1), nil},
{"2147483648", 1<<31 - 1, ErrRange},
{"-2147483648", -1 << 31, nil},
{"2147483649", 1<<31 - 1, ErrRange},
{"-2147483649", -1 << 31, ErrRange},
{"-1_2_3_4_5", 0, ErrSyntax}, // base=10 so no underscores allowed
{"-_12345", 0, ErrSyntax},
{"_12345", 0, ErrSyntax},
{"1__2345", 0, ErrSyntax},
{"12345_", 0, ErrSyntax},
}
type numErrorTest struct {
num, want string
}
var numErrorTests = []numErrorTest{
{"0", `strconv.ParseFloat: parsing "0": failed`},
{"`", "strconv.ParseFloat: parsing \"`\": failed"},
{"1\x00.2", `strconv.ParseFloat: parsing "1\x00.2": failed`},
}
func init() {
// The parse routines return NumErrors wrapping
// the error and the string. Convert the tables above.
for i := range parseUint64Tests {
test := &parseUint64Tests[i]
if test.err != nil {
test.err = &NumError{"ParseUint", test.in, test.err}
}
}
for i := range parseUint64BaseTests {
test := &parseUint64BaseTests[i]
if test.err != nil {
test.err = &NumError{"ParseUint", test.in, test.err}
}
}
for i := range parseInt64Tests {
test := &parseInt64Tests[i]
if test.err != nil {
test.err = &NumError{"ParseInt", test.in, test.err}
}
}
for i := range parseInt64BaseTests {
test := &parseInt64BaseTests[i]
if test.err != nil {
test.err = &NumError{"ParseInt", test.in, test.err}
}
}
for i := range parseUint32Tests {
test := &parseUint32Tests[i]
if test.err != nil {
test.err = &NumError{"ParseUint", test.in, test.err}
}
}
for i := range parseInt32Tests {
test := &parseInt32Tests[i]
if test.err != nil {
test.err = &NumError{"ParseInt", test.in, test.err}
}
}
}
func TestParseUint32(t *testing.T) {
for i := range parseUint32Tests {
test := &parseUint32Tests[i]
out, err := ParseUint(test.in, 10, 32)
if uint64(test.out) != out || !reflect.DeepEqual(test.err, err) {
t.Errorf("ParseUint(%q, 10, 32) = %v, %v want %v, %v",
test.in, out, err, test.out, test.err)
}
}
}
func TestParseUint64(t *testing.T) {
for i := range parseUint64Tests {
test := &parseUint64Tests[i]
out, err := ParseUint(test.in, 10, 64)
if test.out != out || !reflect.DeepEqual(test.err, err) {
t.Errorf("ParseUint(%q, 10, 64) = %v, %v want %v, %v",
test.in, out, err, test.out, test.err)
}
}
}
func TestParseUint64Base(t *testing.T) {
for i := range parseUint64BaseTests {
test := &parseUint64BaseTests[i]
out, err := ParseUint(test.in, test.base, 64)
if test.out != out || !reflect.DeepEqual(test.err, err) {
t.Errorf("ParseUint(%q, %v, 64) = %v, %v want %v, %v",
test.in, test.base, out, err, test.out, test.err)
}
}
}
func TestParseInt32(t *testing.T) {
for i := range parseInt32Tests {
test := &parseInt32Tests[i]
out, err := ParseInt(test.in, 10, 32)
if int64(test.out) != out || !reflect.DeepEqual(test.err, err) {
t.Errorf("ParseInt(%q, 10 ,32) = %v, %v want %v, %v",
test.in, out, err, test.out, test.err)
}
}
}
func TestParseInt64(t *testing.T) {
for i := range parseInt64Tests {
test := &parseInt64Tests[i]
out, err := ParseInt(test.in, 10, 64)
if test.out != out || !reflect.DeepEqual(test.err, err) {
t.Errorf("ParseInt(%q, 10, 64) = %v, %v want %v, %v",
test.in, out, err, test.out, test.err)
}
}
}
func TestParseInt64Base(t *testing.T) {
for i := range parseInt64BaseTests {
test := &parseInt64BaseTests[i]
out, err := ParseInt(test.in, test.base, 64)
if test.out != out || !reflect.DeepEqual(test.err, err) {
t.Errorf("ParseInt(%q, %v, 64) = %v, %v want %v, %v",
test.in, test.base, out, err, test.out, test.err)
}
}
}
func TestParseUint(t *testing.T) {
switch IntSize {
case 32:
for i := range parseUint32Tests {
test := &parseUint32Tests[i]
out, err := ParseUint(test.in, 10, 0)
if uint64(test.out) != out || !reflect.DeepEqual(test.err, err) {
t.Errorf("ParseUint(%q, 10, 0) = %v, %v want %v, %v",
test.in, out, err, test.out, test.err)
}
}
case 64:
for i := range parseUint64Tests {
test := &parseUint64Tests[i]
out, err := ParseUint(test.in, 10, 0)
if test.out != out || !reflect.DeepEqual(test.err, err) {
t.Errorf("ParseUint(%q, 10, 0) = %v, %v want %v, %v",
test.in, out, err, test.out, test.err)
}
}
}
}
func TestParseInt(t *testing.T) {
switch IntSize {
case 32:
for i := range parseInt32Tests {
test := &parseInt32Tests[i]
out, err := ParseInt(test.in, 10, 0)
if int64(test.out) != out || !reflect.DeepEqual(test.err, err) {
t.Errorf("ParseInt(%q, 10, 0) = %v, %v want %v, %v",
test.in, out, err, test.out, test.err)
}
}
case 64:
for i := range parseInt64Tests {
test := &parseInt64Tests[i]
out, err := ParseInt(test.in, 10, 0)
if test.out != out || !reflect.DeepEqual(test.err, err) {
t.Errorf("ParseInt(%q, 10, 0) = %v, %v want %v, %v",
test.in, out, err, test.out, test.err)
}
}
}
}
func TestAtoi(t *testing.T) {
switch IntSize {
case 32:
for i := range parseInt32Tests {
test := &parseInt32Tests[i]
out, err := Atoi(test.in)
var testErr error
if test.err != nil {
testErr = &NumError{"Atoi", test.in, test.err.(*NumError).Err}
}
if int(test.out) != out || !reflect.DeepEqual(testErr, err) {
t.Errorf("Atoi(%q) = %v, %v want %v, %v",
test.in, out, err, test.out, testErr)
}
}
case 64:
for i := range parseInt64Tests {
test := &parseInt64Tests[i]
out, err := Atoi(test.in)
var testErr error
if test.err != nil {
testErr = &NumError{"Atoi", test.in, test.err.(*NumError).Err}
}
if test.out != int64(out) || !reflect.DeepEqual(testErr, err) {
t.Errorf("Atoi(%q) = %v, %v want %v, %v",
test.in, out, err, test.out, testErr)
}
}
}
}
func bitSizeErrStub(name string, bitSize int) error {
return BitSizeError(name, "0", bitSize)
}
func baseErrStub(name string, base int) error {
return BaseError(name, "0", base)
}
func noErrStub(name string, arg int) error {
return nil
}
type parseErrorTest struct {
arg int
errStub func(name string, arg int) error
}
var parseBitSizeTests = []parseErrorTest{
{-1, bitSizeErrStub},
{0, noErrStub},
{64, noErrStub},
{65, bitSizeErrStub},
}
var parseBaseTests = []parseErrorTest{
{-1, baseErrStub},
{0, noErrStub},
{1, baseErrStub},
{2, noErrStub},
{36, noErrStub},
{37, baseErrStub},
}
func equalError(a, b error) bool {
if a == nil {
return b == nil
}
if b == nil {
return a == nil
}
return a.Error() == b.Error()
}
func TestParseIntBitSize(t *testing.T) {
for i := range parseBitSizeTests {
test := &parseBitSizeTests[i]
testErr := test.errStub("ParseInt", test.arg)
_, err := ParseInt("0", 0, test.arg)
if !equalError(testErr, err) {
t.Errorf("ParseInt(\"0\", 0, %v) = 0, %v want 0, %v",
test.arg, err, testErr)
}
}
}
func TestParseUintBitSize(t *testing.T) {
for i := range parseBitSizeTests {
test := &parseBitSizeTests[i]
testErr := test.errStub("ParseUint", test.arg)
_, err := ParseUint("0", 0, test.arg)
if !equalError(testErr, err) {
t.Errorf("ParseUint(\"0\", 0, %v) = 0, %v want 0, %v",
test.arg, err, testErr)
}
}
}
func TestParseIntBase(t *testing.T) {
for i := range parseBaseTests {
test := &parseBaseTests[i]
testErr := test.errStub("ParseInt", test.arg)
_, err := ParseInt("0", test.arg, 0)
if !equalError(testErr, err) {
t.Errorf("ParseInt(\"0\", %v, 0) = 0, %v want 0, %v",
test.arg, err, testErr)
}
}
}
func TestParseUintBase(t *testing.T) {
for i := range parseBaseTests {
test := &parseBaseTests[i]
testErr := test.errStub("ParseUint", test.arg)
_, err := ParseUint("0", test.arg, 0)
if !equalError(testErr, err) {
t.Errorf("ParseUint(\"0\", %v, 0) = 0, %v want 0, %v",
test.arg, err, testErr)
}
}
}
func TestNumError(t *testing.T) {
for _, test := range numErrorTests {
err := &NumError{
Func: "ParseFloat",
Num: test.num,
Err: errors.New("failed"),
}
if got := err.Error(); got != test.want {
t.Errorf(`(&NumError{"ParseFloat", %q, "failed"}).Error() = %v, want %v`, test.num, got, test.want)
}
}
}
func BenchmarkParseInt(b *testing.B) {
b.Run("Pos", func(b *testing.B) {
benchmarkParseInt(b, 1)
})
b.Run("Neg", func(b *testing.B) {
benchmarkParseInt(b, -1)
})
}
type benchCase struct {
name string
num int64
}
func benchmarkParseInt(b *testing.B, neg int) {
cases := []benchCase{
{"7bit", 1<<7 - 1},
{"26bit", 1<<26 - 1},
{"31bit", 1<<31 - 1},
{"56bit", 1<<56 - 1},
{"63bit", 1<<63 - 1},
}
for _, cs := range cases {
b.Run(cs.name, func(b *testing.B) {
s := fmt.Sprintf("%d", cs.num*int64(neg))
for i := 0; i < b.N; i++ {
out, _ := ParseInt(s, 10, 64)
BenchSink += int(out)
}
})
}
}
func BenchmarkAtoi(b *testing.B) {
b.Run("Pos", func(b *testing.B) {
benchmarkAtoi(b, 1)
})
b.Run("Neg", func(b *testing.B) {
benchmarkAtoi(b, -1)
})
}
func benchmarkAtoi(b *testing.B, neg int) {
cases := []benchCase{
{"7bit", 1<<7 - 1},
{"26bit", 1<<26 - 1},
{"31bit", 1<<31 - 1},
}
if IntSize == 64 {
cases = append(cases, []benchCase{
{"56bit", 1<<56 - 1},
{"63bit", 1<<63 - 1},
}...)
}
for _, cs := range cases {
b.Run(cs.name, func(b *testing.B) {
s := fmt.Sprintf("%d", cs.num*int64(neg))
for i := 0; i < b.N; i++ {
out, _ := Atoi(s)
BenchSink += out
}
})
}
}
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