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// 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}, {"-0", 0, ErrSyntax}, {"-1", 0, ErrSyntax}, {"+1", 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}, {"+0", 0, nil}, {"1", 1, 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}, {"123%45", 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}, {"+0xf", 0, 0xf, nil}, {"-0xf", 0, -0xf, nil}, {"0x+f", 0, 0, ErrSyntax}, {"0x-f", 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}, {"123%45", 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 TestNumErrorUnwrap(t *testing.T) { err := &NumError{Err: ErrSyntax} if !errors.Is(err, ErrSyntax) { t.Error("errors.Is failed, wanted success") } } 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 } }) } }