luzifer/vault-openvpn
1
0
Fork 0
mirror of https://github.com/Luzifer/vault-openvpn.git synced 2024-11-14 11:02:45 +00:00
Code Issues Releases Wiki Activity
vault-openvpn/vendor/golang.org/x/text/message/fmt_test.go
Knut Ahlers 4d62cd0789
Update dependencies 
Signed-off-by: Knut Ahlers <knut@ahlers.me>
2017-10-10 10:19:14 +02:00

1889 lines
58 KiB
Go
Executable file
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

// Copyright 2017 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 message
import (
"bytes"
"fmt"
"io"
"math"
"reflect"
"runtime"
"strings"
"testing"
"time"
"golang.org/x/text/language"
)
type (
renamedBool bool
renamedInt int
renamedInt8 int8
renamedInt16 int16
renamedInt32 int32
renamedInt64 int64
renamedUint uint
renamedUint8 uint8
renamedUint16 uint16
renamedUint32 uint32
renamedUint64 uint64
renamedUintptr uintptr
renamedString string
renamedBytes []byte
renamedFloat32 float32
renamedFloat64 float64
renamedComplex64 complex64
renamedComplex128 complex128
)
func TestFmtInterface(t *testing.T) {
p := NewPrinter(language.Und)
var i1 interface{}
i1 = "abc"
s := p.Sprintf("%s", i1)
if s != "abc" {
t.Errorf(`Sprintf("%%s", empty("abc")) = %q want %q`, s, "abc")
}
}
var (
NaN = math.NaN()
posInf = math.Inf(1)
negInf = math.Inf(-1)
intVar = 0
array = [5]int{1, 2, 3, 4, 5}
iarray = [4]interface{}{1, "hello", 2.5, nil}
slice = array[:]
islice = iarray[:]
)
type A struct {
i int
j uint
s string
x []int
}
type I int
func (i I) String() string {
p := NewPrinter(language.Und)
return p.Sprintf("<%d>", int(i))
}
type B struct {
I I
j int
}
type C struct {
i int
B
}
type F int
func (f F) Format(s fmt.State, c rune) {
p := NewPrinter(language.Und)
p.Fprintf(s, "<%c=F(%d)>", c, int(f))
}
type G int
func (g G) GoString() string {
p := NewPrinter(language.Und)
return p.Sprintf("GoString(%d)", int(g))
}
type S struct {
F F // a struct field that Formats
G G // a struct field that GoStrings
}
type SI struct {
I interface{}
}
// P is a type with a String method with pointer receiver for testing %p.
type P int
var pValue P
func (p *P) String() string {
return "String(p)"
}
var barray = [5]renamedUint8{1, 2, 3, 4, 5}
var bslice = barray[:]
type byteStringer byte
func (byteStringer) String() string {
return "X"
}
var byteStringerSlice = []byteStringer{'h', 'e', 'l', 'l', 'o'}
type byteFormatter byte
func (byteFormatter) Format(f fmt.State, _ rune) {
p := NewPrinter(language.Und)
p.Fprint(f, "X")
}
var byteFormatterSlice = []byteFormatter{'h', 'e', 'l', 'l', 'o'}
var fmtTests = []struct {
fmt string
val interface{}
out string
}{
// The behavior of the following tests differs from that of the fmt package.
// Unlike with the fmt package, it is okay to have extra arguments for
// strings without format parameters. This is because it is impossible to
// distinguish between reordered or ordered format strings in this case.
// (For reordered format strings it is okay to not use arguments.)
{"", nil, ""},
{"", 2, ""},
{"no args", "hello", "no args"},
{"%017091901790959340919092959340919017929593813360", 0, "%!(NOVERB)"},
{"%184467440737095516170v", 0, "%!(NOVERB)"},
// Extra argument errors should format without flags set.
{"%010.2", "12345", "%!(NOVERB)"},
// Some key other differences, asides from localized values:
// - NaN values should not use affixes; so no signs (CLDR requirement)
// - Infinity uses patterns, so signs may be different (CLDR requirement)
// - The # flag is used to disable localization.
// All following tests are analogous to those of the fmt package, but with
// localized numbers when appropriate.
{"%d", 12345, "12,345"},
{"%v", 12345, "12,345"},
{"%t", true, "true"},
// basic string
{"%s", "abc", "abc"},
{"%q", "abc", `"abc"`},
{"%x", "abc", "616263"},
{"%x", "\xff\xf0\x0f\xff", "fff00fff"},
{"%X", "\xff\xf0\x0f\xff", "FFF00FFF"},
{"%x", "", ""},
{"% x", "", ""},
{"%#x", "", ""},
{"%# x", "", ""},
{"%x", "xyz", "78797a"},
{"%X", "xyz", "78797A"},
{"% x", "xyz", "78 79 7a"},
{"% X", "xyz", "78 79 7A"},
{"%#x", "xyz", "0x78797a"},
{"%#X", "xyz", "0X78797A"},
{"%# x", "xyz", "0x78 0x79 0x7a"},
{"%# X", "xyz", "0X78 0X79 0X7A"},
// basic bytes
{"%s", []byte("abc"), "abc"},
{"%s", [3]byte{'a', 'b', 'c'}, "abc"},
{"%s", &[3]byte{'a', 'b', 'c'}, "&abc"},
{"%q", []byte("abc"), `"abc"`},
{"%x", []byte("abc"), "616263"},
{"%x", []byte("\xff\xf0\x0f\xff"), "fff00fff"},
{"%X", []byte("\xff\xf0\x0f\xff"), "FFF00FFF"},
{"%x", []byte(""), ""},
{"% x", []byte(""), ""},
{"%#x", []byte(""), ""},
{"%# x", []byte(""), ""},
{"%x", []byte("xyz"), "78797a"},
{"%X", []byte("xyz"), "78797A"},
{"% x", []byte("xyz"), "78 79 7a"},
{"% X", []byte("xyz"), "78 79 7A"},
{"%#x", []byte("xyz"), "0x78797a"},
{"%#X", []byte("xyz"), "0X78797A"},
{"%# x", []byte("xyz"), "0x78 0x79 0x7a"},
{"%# X", []byte("xyz"), "0X78 0X79 0X7A"},
// escaped strings
{"%q", "", `""`},
{"%#q", "", "``"},
{"%q", "\"", `"\""`},
{"%#q", "\"", "`\"`"},
{"%q", "`", `"` + "`" + `"`},
{"%#q", "`", `"` + "`" + `"`},
{"%q", "\n", `"\n"`},
{"%#q", "\n", `"\n"`},
{"%q", `\n`, `"\\n"`},
{"%#q", `\n`, "`\\n`"},
{"%q", "abc", `"abc"`},
{"%#q", "abc", "`abc`"},
{"%q", "日本語", `"日本語"`},
{"%+q", "日本語", `"\u65e5\u672c\u8a9e"`},
{"%#q", "日本語", "`日本語`"},
{"%#+q", "日本語", "`日本語`"},
{"%q", "\a\b\f\n\r\t\v\"\\", `"\a\b\f\n\r\t\v\"\\"`},
{"%+q", "\a\b\f\n\r\t\v\"\\", `"\a\b\f\n\r\t\v\"\\"`},
{"%#q", "\a\b\f\n\r\t\v\"\\", `"\a\b\f\n\r\t\v\"\\"`},
{"%#+q", "\a\b\f\n\r\t\v\"\\", `"\a\b\f\n\r\t\v\"\\"`},
{"%q", "☺", `"☺"`},
{"% q", "☺", `"☺"`}, // The space modifier should have no effect.
{"%+q", "☺", `"\u263a"`},
{"%#q", "☺", "`☺`"},
{"%#+q", "☺", "`☺`"},
{"%10q", "⌘", ` "⌘"`},
{"%+10q", "⌘", ` "\u2318"`},
{"%-10q", "⌘", `"⌘" `},
{"%+-10q", "⌘", `"\u2318" `},
{"%010q", "⌘", `0000000"⌘"`},
{"%+010q", "⌘", `00"\u2318"`},
{"%-010q", "⌘", `"⌘" `}, // 0 has no effect when - is present.
{"%+-010q", "⌘", `"\u2318" `},
{"%#8q", "\n", ` "\n"`},
{"%#+8q", "\r", ` "\r"`},
{"%#-8q", "\t", "` ` "},
{"%#+-8q", "\b", `"\b" `},
{"%q", "abc\xffdef", `"abc\xffdef"`},
{"%+q", "abc\xffdef", `"abc\xffdef"`},
{"%#q", "abc\xffdef", `"abc\xffdef"`},
{"%#+q", "abc\xffdef", `"abc\xffdef"`},
// Runes that are not printable.
{"%q", "\U0010ffff", `"\U0010ffff"`},
{"%+q", "\U0010ffff", `"\U0010ffff"`},
{"%#q", "\U0010ffff", "`􏿿`"},
{"%#+q", "\U0010ffff", "`􏿿`"},
// Runes that are not valid.
{"%q", string(0x110000), `"<22>"`},
{"%+q", string(0x110000), `"\ufffd"`},
{"%#q", string(0x110000), "`<60>`"},
{"%#+q", string(0x110000), "`<60>`"},
// characters
{"%c", uint('x'), "x"},
{"%c", 0xe4, "ä"},
{"%c", 0x672c, "本"},
{"%c", '日', "日"},
{"%.0c", '⌘', "⌘"}, // Specifying precision should have no effect.
{"%3c", '⌘', " ⌘"},
{"%-3c", '⌘', "⌘ "},
// Runes that are not printable.
{"%c", '\U00000e00', "\u0e00"},
{"%c", '\U0010ffff', "\U0010ffff"},
// Runes that are not valid.
{"%c", -1, "<22>"},
{"%c", 0xDC80, "<22>"},
{"%c", rune(0x110000), "<22>"},
{"%c", int64(0xFFFFFFFFF), "<22>"},
{"%c", uint64(0xFFFFFFFFF), "<22>"},
// escaped characters
{"%q", uint(0), `'\x00'`},
{"%+q", uint(0), `'\x00'`},
{"%q", '"', `'"'`},
{"%+q", '"', `'"'`},
{"%q", '\'', `'\''`},
{"%+q", '\'', `'\''`},
{"%q", '`', "'`'"},
{"%+q", '`', "'`'"},
{"%q", 'x', `'x'`},
{"%+q", 'x', `'x'`},
{"%q", 'ÿ', `'ÿ'`},
{"%+q", 'ÿ', `'\u00ff'`},
{"%q", '\n', `'\n'`},
{"%+q", '\n', `'\n'`},
{"%q", '☺', `'☺'`},
{"%+q", '☺', `'\u263a'`},
{"% q", '☺', `'☺'`}, // The space modifier should have no effect.
{"%.0q", '☺', `'☺'`}, // Specifying precision should have no effect.
{"%10q", '⌘', ` '⌘'`},
{"%+10q", '⌘', ` '\u2318'`},
{"%-10q", '⌘', `'⌘' `},
{"%+-10q", '⌘', `'\u2318' `},
{"%010q", '⌘', `0000000'⌘'`},
{"%+010q", '⌘', `00'\u2318'`},
{"%-010q", '⌘', `'⌘' `}, // 0 has no effect when - is present.
{"%+-010q", '⌘', `'\u2318' `},
// Runes that are not printable.
{"%q", '\U00000e00', `'\u0e00'`},
{"%q", '\U0010ffff', `'\U0010ffff'`},
// Runes that are not valid.
{"%q", int32(-1), "%!q(int32=-1)"},
{"%q", 0xDC80, `'<27>'`},
{"%q", rune(0x110000), "%!q(int32=1,114,112)"},
{"%q", int64(0xFFFFFFFFF), "%!q(int64=68,719,476,735)"},
{"%q", uint64(0xFFFFFFFFF), "%!q(uint64=68,719,476,735)"},
// width
{"%5s", "abc", " abc"},
{"%2s", "\u263a", " ☺"},
{"%-5s", "abc", "abc "},
{"%-8q", "abc", `"abc" `},
{"%05s", "abc", "00abc"},
{"%08q", "abc", `000"abc"`},
{"%5s", "abcdefghijklmnopqrstuvwxyz", "abcdefghijklmnopqrstuvwxyz"},
{"%.5s", "abcdefghijklmnopqrstuvwxyz", "abcde"},
{"%.0s", "日本語日本語", ""},
{"%.5s", "日本語日本語", "日本語日本"},
{"%.10s", "日本語日本語", "日本語日本語"},
{"%.5s", []byte("日本語日本語"), "日本語日本"},
{"%.5q", "abcdefghijklmnopqrstuvwxyz", `"abcde"`},
{"%.5x", "abcdefghijklmnopqrstuvwxyz", "6162636465"},
{"%.5q", []byte("abcdefghijklmnopqrstuvwxyz"), `"abcde"`},
{"%.5x", []byte("abcdefghijklmnopqrstuvwxyz"), "6162636465"},
{"%.3q", "日本語日本語", `"日本語"`},
{"%.3q", []byte("日本語日本語"), `"日本語"`},
{"%.1q", "日本語", `"日"`},
{"%.1q", []byte("日本語"), `"日"`},
{"%.1x", "日本語", "e6"},
{"%.1X", []byte("日本語"), "E6"},
{"%10.1q", "日本語日本語", ` "日"`},
{"%10v", nil, " <nil>"},
{"%-10v", nil, "<nil> "},
// integers
{"%d", uint(12345), "12,345"},
{"%d", int(-12345), "-12,345"},
{"%d", ^uint8(0), "255"},
{"%d", ^uint16(0), "65,535"},
{"%d", ^uint32(0), "4,294,967,295"},
{"%d", ^uint64(0), "18,446,744,073,709,551,615"},
{"%d", int8(-1 << 7), "-128"},
{"%d", int16(-1 << 15), "-32,768"},
{"%d", int32(-1 << 31), "-2,147,483,648"},
{"%d", int64(-1 << 63), "-9,223,372,036,854,775,808"},
{"%.d", 0, ""},
{"%.0d", 0, ""},
{"%6.0d", 0, " "},
{"%06.0d", 0, " "},
{"% d", 12345, " 12,345"},
{"%+d", 12345, "+12,345"},
{"%+d", -12345, "-12,345"},
{"%b", 7, "111"},
{"%b", -6, "-110"},
{"%b", ^uint32(0), "11111111111111111111111111111111"},
{"%b", ^uint64(0), "1111111111111111111111111111111111111111111111111111111111111111"},
{"%b", int64(-1 << 63), zeroFill("-1", 63, "")},
{"%o", 01234, "1234"},
{"%#o", 01234, "01234"},
{"%o", ^uint32(0), "37777777777"},
{"%o", ^uint64(0), "1777777777777777777777"},
{"%#X", 0, "0X0"},
{"%x", 0x12abcdef, "12abcdef"},
{"%X", 0x12abcdef, "12ABCDEF"},
{"%x", ^uint32(0), "ffffffff"},
{"%X", ^uint64(0), "FFFFFFFFFFFFFFFF"},
{"%.20b", 7, "00000000000000000111"},
{"%10d", 12345, " 12,345"},
{"%10d", -12345, " -12,345"},
{"%+10d", 12345, " +12,345"},
{"%010d", 12345, "0,000,012,345"},
{"%010d", -12345, "-0,000,012,345"},
{"%20.8d", 1234, " 00,001,234"},
{"%20.8d", -1234, " -00,001,234"},
{"%020.8d", 1234, " 00,001,234"},
{"%020.8d", -1234, " -00,001,234"},
{"%-20.8d", 1234, "00,001,234 "},
{"%-20.8d", -1234, "-00,001,234 "},
{"%-#20.8x", 0x1234abc, "0x01234abc "},
{"%-#20.8X", 0x1234abc, "0X01234ABC "},
{"%-#20.8o", 01234, "00001234 "},
// Test correct f.intbuf overflow checks.
{"%068d", 1, "00," + strings.Repeat("000,", 21) + "001"},
{"%068d", -1, "-00," + strings.Repeat("000,", 21) + "001"},
{"%#.68x", 42, zeroFill("0x", 68, "2a")},
{"%.68d", -42, "-00," + strings.Repeat("000,", 21) + "042"},
{"%+.68d", 42, "+00," + strings.Repeat("000,", 21) + "042"},
{"% .68d", 42, " 00," + strings.Repeat("000,", 21) + "042"},
{"% +.68d", 42, "+00," + strings.Repeat("000,", 21) + "042"},
// unicode format
{"%U", 0, "U+0000"},
{"%U", -1, "U+FFFFFFFFFFFFFFFF"},
{"%U", '\n', `U+000A`},
{"%#U", '\n', `U+000A`},
{"%+U", 'x', `U+0078`}, // Plus flag should have no effect.
{"%# U", 'x', `U+0078 'x'`}, // Space flag should have no effect.
{"%#.2U", 'x', `U+0078 'x'`}, // Precisions below 4 should print 4 digits.
{"%U", '\u263a', `U+263A`},
{"%#U", '\u263a', `U+263A '☺'`},
{"%U", '\U0001D6C2', `U+1D6C2`},
{"%#U", '\U0001D6C2', `U+1D6C2 '𝛂'`},
{"%#14.6U", '⌘', " U+002318 '⌘'"},
{"%#-14.6U", '⌘', "U+002318 '⌘' "},
{"%#014.6U", '⌘', " U+002318 '⌘'"},
{"%#-014.6U", '⌘', "U+002318 '⌘' "},
{"%.68U", uint(42), zeroFill("U+", 68, "2A")},
{"%#.68U", '日', zeroFill("U+", 68, "65E5") + " '日'"},
// floats
{"%+.3e", 0.0, "+0.000\u202f×\u202f10⁰⁰"},
{"%+.3e", 1.0, "+1.000\u202f×\u202f10⁰⁰"},
{"%+.3f", -1.0, "-1.000"},
{"%+.3F", -1.0, "-1.000"},
{"%+.3F", float32(-1.0), "-1.000"},
{"%+07.2f", 1.0, "+001.00"},
{"%+07.2f", -1.0, "-001.00"},
{"%-07.2f", 1.0, "1.00 "},
{"%-07.2f", -1.0, "-1.00 "},
{"%+-07.2f", 1.0, "+1.00 "},
{"%+-07.2f", -1.0, "-1.00 "},
{"%-+07.2f", 1.0, "+1.00 "},
{"%-+07.2f", -1.0, "-1.00 "},
{"%+10.2f", +1.0, " +1.00"},
{"%+10.2f", -1.0, " -1.00"},
{"% .3E", -1.0, "-1.000\u202f×\u202f10⁰⁰"},
{"% .3e", 1.0, " 1.000\u202f×\u202f10⁰⁰"},
{"%+.3g", 0.0, "+0"},
{"%+.3g", 1.0, "+1"},
{"%+.3g", -1.0, "-1"},
{"% .3g", -1.0, "-1"},
{"% .3g", 1.0, " 1"},
{"%b", float32(1.0), "8388608p-23"},
{"%b", 1.0, "4503599627370496p-52"},
// Test sharp flag used with floats.
{"%#g", 1e-323, "1.00000e-323"},
{"%#g", -1.0, "-1.00000"},
{"%#g", 1.1, "1.10000"},
{"%#g", 123456.0, "123456."},
{"%#g", 1234567.0, "1.234567e+06"},
{"%#g", 1230000.0, "1.23000e+06"},
{"%#g", 1000000.0, "1.00000e+06"},
{"%#.0f", 1.0, "1."},
{"%#.0e", 1.0, "1.e+00"},
{"%#.0g", 1.0, "1."},
{"%#.0g", 1100000.0, "1.e+06"},
{"%#.4f", 1.0, "1.0000"},
{"%#.4e", 1.0, "1.0000e+00"},
{"%#.4g", 1.0, "1.000"},
{"%#.4g", 100000.0, "1.000e+05"},
{"%#.0f", 123.0, "123."},
{"%#.0e", 123.0, "1.e+02"},
{"%#.0g", 123.0, "1.e+02"},
{"%#.4f", 123.0, "123.0000"},
{"%#.4e", 123.0, "1.2300e+02"},
{"%#.4g", 123.0, "123.0"},
{"%#.4g", 123000.0, "1.230e+05"},
{"%#9.4g", 1.0, " 1.000"},
// The sharp flag has no effect for binary float format.
{"%#b", 1.0, "4503599627370496p-52"},
// Precision has no effect for binary float format.
{"%.4b", float32(1.0), "8388608p-23"},
{"%.4b", -1.0, "-4503599627370496p-52"},
// Test correct f.intbuf boundary checks.
{"%.68f", 1.0, zeroFill("1.", 68, "")},
{"%.68f", -1.0, zeroFill("-1.", 68, "")},
// float infinites and NaNs
{"%f", posInf, "∞"},
{"%.1f", negInf, "-∞"},
{"% f", NaN, "NaN"},
{"%20f", posInf, " ∞"},
{"% 20F", posInf, " ∞"},
{"% 20e", negInf, " -∞"},
{"%+20E", negInf, " -∞"},
{"% +20g", negInf, " -∞"},
{"%+-20G", posInf, "+∞ "},
{"%20e", NaN, " NaN"},
{"% +20E", NaN, " NaN"},
{"% -20g", NaN, "NaN "},
{"%+-20G", NaN, "NaN "},
// Zero padding does not apply to infinities and NaN.
{"%+020e", posInf, " +∞"},
{"%-020f", negInf, "-∞ "},
{"%-020E", NaN, "NaN "},
// complex values
{"%.f", 0i, "(0+0i)"},
{"% .f", 0i, "( 0+0i)"},
{"%+.f", 0i, "(+0+0i)"},
{"% +.f", 0i, "(+0+0i)"},
{"%+.3e", 0i, "(+0.000\u202f×\u202f10⁰⁰+0.000\u202f×\u202f10⁰⁰i)"},
{"%+.3f", 0i, "(+0.000+0.000i)"},
{"%+.3g", 0i, "(+0+0i)"},
{"%+.3e", 1 + 2i, "(+1.000\u202f×\u202f10⁰⁰+2.000\u202f×\u202f10⁰⁰i)"},
{"%+.3f", 1 + 2i, "(+1.000+2.000i)"},
{"%+.3g", 1 + 2i, "(+1+2i)"},
{"%.3e", 0i, "(0.000\u202f×\u202f10⁰⁰+0.000\u202f×\u202f10⁰⁰i)"},
{"%.3f", 0i, "(0.000+0.000i)"},
{"%.3F", 0i, "(0.000+0.000i)"},
{"%.3F", complex64(0i), "(0.000+0.000i)"},
{"%.3g", 0i, "(0+0i)"},
{"%.3e", 1 + 2i, "(1.000\u202f×\u202f10⁰⁰+2.000\u202f×\u202f10⁰⁰i)"},
{"%.3f", 1 + 2i, "(1.000+2.000i)"},
{"%.3g", 1 + 2i, "(1+2i)"},
{"%.3e", -1 - 2i, "(-1.000\u202f×\u202f10⁰⁰-2.000\u202f×\u202f10⁰⁰i)"},
{"%.3f", -1 - 2i, "(-1.000-2.000i)"},
{"%.3g", -1 - 2i, "(-1-2i)"},
{"% .3E", -1 - 2i, "(-1.000\u202f×\u202f10⁰⁰-2.000\u202f×\u202f10⁰⁰i)"},
{"%+.3g", 1 + 2i, "(+1+2i)"},
{"%+.3g", complex64(1 + 2i), "(+1+2i)"},
{"%#g", 1 + 2i, "(1.00000+2.00000i)"},
{"%#g", 123456 + 789012i, "(123456.+789012.i)"},
{"%#g", 1e-10i, "(0.00000+1.00000e-10i)"},
{"%#g", -1e10 - 1.11e100i, "(-1.00000e+10-1.11000e+100i)"},
{"%#.0f", 1.23 + 1.0i, "(1.+1.i)"},
{"%#.0e", 1.23 + 1.0i, "(1.e+00+1.e+00i)"},
{"%#.0g", 1.23 + 1.0i, "(1.+1.i)"},
{"%#.0g", 0 + 100000i, "(0.+1.e+05i)"},
{"%#.0g", 1230000 + 0i, "(1.e+06+0.i)"},
{"%#.4f", 1 + 1.23i, "(1.0000+1.2300i)"},
{"%#.4e", 123 + 1i, "(1.2300e+02+1.0000e+00i)"},
{"%#.4g", 123 + 1.23i, "(123.0+1.230i)"},
{"%#12.5g", 0 + 100000i, "( 0.0000 +1.0000e+05i)"},
{"%#12.5g", 1230000 - 0i, "( 1.2300e+06 +0.0000i)"},
{"%b", 1 + 2i, "(4503599627370496p-52+4503599627370496p-51i)"},
{"%b", complex64(1 + 2i), "(8388608p-23+8388608p-22i)"},
// The sharp flag has no effect for binary complex format.
{"%#b", 1 + 2i, "(4503599627370496p-52+4503599627370496p-51i)"},
// Precision has no effect for binary complex format.
{"%.4b", 1 + 2i, "(4503599627370496p-52+4503599627370496p-51i)"},
{"%.4b", complex64(1 + 2i), "(8388608p-23+8388608p-22i)"},
// complex infinites and NaNs
{"%f", complex(posInf, posInf), "(∞+∞i)"},
{"%f", complex(negInf, negInf), "(-∞-∞i)"},
{"%f", complex(NaN, NaN), "(NaN+NaNi)"},
{"%.1f", complex(posInf, posInf), "(∞+∞i)"},
{"% f", complex(posInf, posInf), "( ∞+∞i)"},
{"% f", complex(negInf, negInf), "(-∞-∞i)"},
{"% f", complex(NaN, NaN), "(NaN+NaNi)"},
{"%8e", complex(posInf, posInf), "( ∞ +∞i)"},
{"% 8E", complex(posInf, posInf), "( ∞ +∞i)"},
{"%+8f", complex(negInf, negInf), "( -∞ -∞i)"},
{"% +8g", complex(negInf, negInf), "( -∞ -∞i)"}, // TODO(g)
{"% -8G", complex(NaN, NaN), "(NaN +NaN i)"},
{"%+-8b", complex(NaN, NaN), "(+NaN +NaN i)"},
// Zero padding does not apply to infinities and NaN.
{"%08f", complex(posInf, posInf), "( ∞ +∞i)"},
{"%-08g", complex(negInf, negInf), "(-∞ -∞ i)"},
{"%-08G", complex(NaN, NaN), "(NaN +NaN i)"},
// old test/fmt_test.go
{"%e", 1.0, "1.000000\u202f×\u202f10⁰⁰"},
{"%e", 1234.5678e3, "1.234568\u202f×\u202f10⁰⁶"},
{"%e", 1234.5678e-8, "1.234568\u202f×\u202f10⁻⁰⁵"},
{"%e", -7.0, "-7.000000\u202f×\u202f10⁰⁰"},
{"%e", -1e-9, "-1.000000\u202f×\u202f10⁻⁰⁹"},
{"%f", 1234.5678e3, "1,234,567.800000"},
{"%f", 1234.5678e-8, "0.000012"},
{"%f", -7.0, "-7.000000"},
{"%f", -1e-9, "-0.000000"},
{"%g", 1234.5678e3, "1.2345678\u202f×\u202f10⁰⁶"},
{"%g", float32(1234.5678e3), "1.2345678\u202f×\u202f10⁰⁶"},
{"%g", 1234.5678e-8, "1.2345678\u202f×\u202f10⁻⁰⁵"},
{"%g", -7.0, "-7"},
{"%g", -1e-9, "-1\u202f×\u202f10⁻⁰⁹"},
{"%g", float32(-1e-9), "-1\u202f×\u202f10⁻⁰⁹"},
{"%E", 1.0, "1.000000\u202f×\u202f10⁰⁰"},
{"%E", 1234.5678e3, "1.234568\u202f×\u202f10⁰⁶"},
{"%E", 1234.5678e-8, "1.234568\u202f×\u202f10⁻⁰⁵"},
{"%E", -7.0, "-7.000000\u202f×\u202f10⁰⁰"},
{"%E", -1e-9, "-1.000000\u202f×\u202f10⁻⁰⁹"},
{"%G", 1234.5678e3, "1.2345678\u202f×\u202f10⁰⁶"},
{"%G", float32(1234.5678e3), "1.2345678\u202f×\u202f10⁰⁶"},
{"%G", 1234.5678e-8, "1.2345678\u202f×\u202f10⁻⁰⁵"},
{"%G", -7.0, "-7"},
{"%G", -1e-9, "-1\u202f×\u202f10⁻⁰⁹"},
{"%G", float32(-1e-9), "-1\u202f×\u202f10⁻⁰⁹"},
{"%20.5s", "qwertyuiop", " qwert"},
{"%.5s", "qwertyuiop", "qwert"},
{"%-20.5s", "qwertyuiop", "qwert "},
{"%20c", 'x', " x"},
{"%-20c", 'x', "x "},
{"%20.6e", 1.2345e3, " 1.234500\u202f×\u202f10⁰³"},
{"%20.6e", 1.2345e-3, " 1.234500\u202f×\u202f10⁻⁰³"},
{"%20e", 1.2345e3, " 1.234500\u202f×\u202f10⁰³"},
{"%20e", 1.2345e-3, " 1.234500\u202f×\u202f10⁻⁰³"},
{"%20.8e", 1.2345e3, " 1.23450000\u202f×\u202f10⁰³"},
{"%20f", 1.23456789e3, " 1,234.567890"},
{"%20f", 1.23456789e-3, " 0.001235"},
{"%20f", 12345678901.23456789, "12,345,678,901.234568"},
{"%-20f", 1.23456789e3, "1,234.567890 "},
{"%20.8f", 1.23456789e3, " 1,234.56789000"},
{"%20.8f", 1.23456789e-3, " 0.00123457"},
{"%g", 1.23456789e3, "1,234.56789"},
{"%g", 1.23456789e-3, "0.00123456789"},
{"%g", 1.23456789e20, "1.23456789\u202f×\u202f10²⁰"},
// arrays
{"%v", array, "[1 2 3 4 5]"},
{"%v", iarray, "[1 hello 2.5 <nil>]"},
{"%v", barray, "[1 2 3 4 5]"},
{"%v", &array, "&[1 2 3 4 5]"},
{"%v", &iarray, "&[1 hello 2.5 <nil>]"},
{"%v", &barray, "&[1 2 3 4 5]"},
// slices
{"%v", slice, "[1 2 3 4 5]"},
{"%v", islice, "[1 hello 2.5 <nil>]"},
{"%v", bslice, "[1 2 3 4 5]"},
{"%v", &slice, "&[1 2 3 4 5]"},
{"%v", &islice, "&[1 hello 2.5 <nil>]"},
{"%v", &bslice, "&[1 2 3 4 5]"},
// byte arrays and slices with %b,%c,%d,%o,%U and %v
{"%b", [3]byte{65, 66, 67}, "[1000001 1000010 1000011]"},
{"%c", [3]byte{65, 66, 67}, "[A B C]"},
{"%d", [3]byte{65, 66, 67}, "[65 66 67]"},
{"%o", [3]byte{65, 66, 67}, "[101 102 103]"},
{"%U", [3]byte{65, 66, 67}, "[U+0041 U+0042 U+0043]"},
{"%v", [3]byte{65, 66, 67}, "[65 66 67]"},
{"%v", [1]byte{123}, "[123]"},
{"%012v", []byte{}, "[]"},
{"%#012v", []byte{}, "[]byte{}"},
{"%6v", []byte{1, 11, 111}, "[ 1 11 111]"},
{"%06v", []byte{1, 11, 111}, "[000001 000011 000111]"},
{"%-6v", []byte{1, 11, 111}, "[1 11 111 ]"},
{"%-06v", []byte{1, 11, 111}, "[1 11 111 ]"},
{"%#v", []byte{1, 11, 111}, "[]byte{0x1, 0xb, 0x6f}"},
{"%#6v", []byte{1, 11, 111}, "[]byte{ 0x1, 0xb, 0x6f}"},
{"%#06v", []byte{1, 11, 111}, "[]byte{0x000001, 0x00000b, 0x00006f}"},
{"%#-6v", []byte{1, 11, 111}, "[]byte{0x1 , 0xb , 0x6f }"},
{"%#-06v", []byte{1, 11, 111}, "[]byte{0x1 , 0xb , 0x6f }"},
// f.space should and f.plus should not have an effect with %v.
{"% v", []byte{1, 11, 111}, "[ 1 11 111]"},
{"%+v", [3]byte{1, 11, 111}, "[1 11 111]"},
{"%# -6v", []byte{1, 11, 111}, "[]byte{ 0x1 , 0xb , 0x6f }"},
{"%#+-6v", [3]byte{1, 11, 111}, "[3]uint8{0x1 , 0xb , 0x6f }"},
// f.space and f.plus should have an effect with %d.
{"% d", []byte{1, 11, 111}, "[ 1 11 111]"},
{"%+d", [3]byte{1, 11, 111}, "[+1 +11 +111]"},
{"%# -6d", []byte{1, 11, 111}, "[ 1 11 111 ]"},
{"%#+-6d", [3]byte{1, 11, 111}, "[+1 +11 +111 ]"},
// floates with %v
{"%v", 1.2345678, "1.2345678"},
{"%v", float32(1.2345678), "1.2345678"},
// complexes with %v
{"%v", 1 + 2i, "(1+2i)"},
{"%v", complex64(1 + 2i), "(1+2i)"},
// structs
{"%v", A{1, 2, "a", []int{1, 2}}, `{1 2 a [1 2]}`},
{"%+v", A{1, 2, "a", []int{1, 2}}, `{i:1 j:2 s:a x:[1 2]}`},
// +v on structs with Stringable items
{"%+v", B{1, 2}, `{I:<1> j:2}`},
{"%+v", C{1, B{2, 3}}, `{i:1 B:{I:<2> j:3}}`},
// other formats on Stringable items
{"%s", I(23), `<23>`},
{"%q", I(23), `"<23>"`},
{"%x", I(23), `3c32333e`},
{"%#x", I(23), `0x3c32333e`},
{"%# x", I(23), `0x3c 0x32 0x33 0x3e`},
// Stringer applies only to string formats.
{"%d", I(23), `23`},
// Stringer applies to the extracted value.
{"%s", reflect.ValueOf(I(23)), `<23>`},
// go syntax
{"%#v", A{1, 2, "a", []int{1, 2}}, `message.A{i:1, j:0x2, s:"a", x:[]int{1, 2}}`},
{"%#v", new(byte), "(*uint8)(0xPTR)"},
{"%#v", TestFmtInterface, "(func(*testing.T))(0xPTR)"},
{"%#v", make(chan int), "(chan int)(0xPTR)"},
{"%#v", uint64(1<<64 - 1), "0xffffffffffffffff"},
{"%#v", 1000000000, "1000000000"},
{"%#v", map[string]int{"a": 1}, `map[string]int{"a":1}`},
{"%#v", map[string]B{"a": {1, 2}}, `map[string]message.B{"a":message.B{I:1, j:2}}`},
{"%#v", []string{"a", "b"}, `[]string{"a", "b"}`},
{"%#v", SI{}, `message.SI{I:interface {}(nil)}`},
{"%#v", []int(nil), `[]int(nil)`},
{"%#v", []int{}, `[]int{}`},
{"%#v", array, `[5]int{1, 2, 3, 4, 5}`},
{"%#v", &array, `&[5]int{1, 2, 3, 4, 5}`},
{"%#v", iarray, `[4]interface {}{1, "hello", 2.5, interface {}(nil)}`},
{"%#v", &iarray, `&[4]interface {}{1, "hello", 2.5, interface {}(nil)}`},
{"%#v", map[int]byte(nil), `map[int]uint8(nil)`},
{"%#v", map[int]byte{}, `map[int]uint8{}`},
{"%#v", "foo", `"foo"`},
{"%#v", barray, `[5]message.renamedUint8{0x1, 0x2, 0x3, 0x4, 0x5}`},
{"%#v", bslice, `[]message.renamedUint8{0x1, 0x2, 0x3, 0x4, 0x5}`},
{"%#v", []int32(nil), "[]int32(nil)"},
{"%#v", 1.2345678, "1.2345678"},
{"%#v", float32(1.2345678), "1.2345678"},
// Only print []byte and []uint8 as type []byte if they appear at the top level.
{"%#v", []byte(nil), "[]byte(nil)"},
{"%#v", []uint8(nil), "[]byte(nil)"},
{"%#v", []byte{}, "[]byte{}"},
{"%#v", []uint8{}, "[]byte{}"},
{"%#v", reflect.ValueOf([]byte{}), "[]uint8{}"},
{"%#v", reflect.ValueOf([]uint8{}), "[]uint8{}"},
{"%#v", &[]byte{}, "&[]uint8{}"},
{"%#v", &[]byte{}, "&[]uint8{}"},
{"%#v", [3]byte{}, "[3]uint8{0x0, 0x0, 0x0}"},
{"%#v", [3]uint8{}, "[3]uint8{0x0, 0x0, 0x0}"},
// slices with other formats
{"%#x", []int{1, 2, 15}, `[0x1 0x2 0xf]`},
{"%x", []int{1, 2, 15}, `[1 2 f]`},
{"%d", []int{1, 2, 15}, `[1 2 15]`},
{"%d", []byte{1, 2, 15}, `[1 2 15]`},
{"%q", []string{"a", "b"}, `["a" "b"]`},
{"% 02x", []byte{1}, "01"},
{"% 02x", []byte{1, 2, 3}, "01 02 03"},
// Padding with byte slices.
{"%2x", []byte{}, " "},
{"%#2x", []byte{}, " "},
{"% 02x", []byte{}, "00"},
{"%# 02x", []byte{}, "00"},
{"%-2x", []byte{}, " "},
{"%-02x", []byte{}, " "},
{"%8x", []byte{0xab}, " ab"},
{"% 8x", []byte{0xab}, " ab"},
{"%#8x", []byte{0xab}, " 0xab"},
{"%# 8x", []byte{0xab}, " 0xab"},
{"%08x", []byte{0xab}, "000000ab"},
{"% 08x", []byte{0xab}, "000000ab"},
{"%#08x", []byte{0xab}, "00000xab"},
{"%# 08x", []byte{0xab}, "00000xab"},
{"%10x", []byte{0xab, 0xcd}, " abcd"},
{"% 10x", []byte{0xab, 0xcd}, " ab cd"},
{"%#10x", []byte{0xab, 0xcd}, " 0xabcd"},
{"%# 10x", []byte{0xab, 0xcd}, " 0xab 0xcd"},
{"%010x", []byte{0xab, 0xcd}, "000000abcd"},
{"% 010x", []byte{0xab, 0xcd}, "00000ab cd"},
{"%#010x", []byte{0xab, 0xcd}, "00000xabcd"},
{"%# 010x", []byte{0xab, 0xcd}, "00xab 0xcd"},
{"%-10X", []byte{0xab}, "AB "},
{"% -010X", []byte{0xab}, "AB "},
{"%#-10X", []byte{0xab, 0xcd}, "0XABCD "},
{"%# -010X", []byte{0xab, 0xcd}, "0XAB 0XCD "},
// Same for strings
{"%2x", "", " "},
{"%#2x", "", " "},
{"% 02x", "", "00"},
{"%# 02x", "", "00"},
{"%-2x", "", " "},
{"%-02x", "", " "},
{"%8x", "\xab", " ab"},
{"% 8x", "\xab", " ab"},
{"%#8x", "\xab", " 0xab"},
{"%# 8x", "\xab", " 0xab"},
{"%08x", "\xab", "000000ab"},
{"% 08x", "\xab", "000000ab"},
{"%#08x", "\xab", "00000xab"},
{"%# 08x", "\xab", "00000xab"},
{"%10x", "\xab\xcd", " abcd"},
{"% 10x", "\xab\xcd", " ab cd"},
{"%#10x", "\xab\xcd", " 0xabcd"},
{"%# 10x", "\xab\xcd", " 0xab 0xcd"},
{"%010x", "\xab\xcd", "000000abcd"},
{"% 010x", "\xab\xcd", "00000ab cd"},
{"%#010x", "\xab\xcd", "00000xabcd"},
{"%# 010x", "\xab\xcd", "00xab 0xcd"},
{"%-10X", "\xab", "AB "},
{"% -010X", "\xab", "AB "},
{"%#-10X", "\xab\xcd", "0XABCD "},
{"%# -010X", "\xab\xcd", "0XAB 0XCD "},
// renamings
{"%v", renamedBool(true), "true"},
{"%d", renamedBool(true), "%!d(message.renamedBool=true)"},
{"%o", renamedInt(8), "10"},
{"%d", renamedInt8(-9), "-9"},
{"%v", renamedInt16(10), "10"},
{"%v", renamedInt32(-11), "-11"},
{"%X", renamedInt64(255), "FF"},
{"%v", renamedUint(13), "13"},
{"%o", renamedUint8(14), "16"},
{"%X", renamedUint16(15), "F"},
{"%d", renamedUint32(16), "16"},
{"%X", renamedUint64(17), "11"},
{"%o", renamedUintptr(18), "22"},
{"%x", renamedString("thing"), "7468696e67"},
{"%d", renamedBytes([]byte{1, 2, 15}), `[1 2 15]`},
{"%q", renamedBytes([]byte("hello")), `"hello"`},
{"%x", []renamedUint8{'h', 'e', 'l', 'l', 'o'}, "68656c6c6f"},
{"%X", []renamedUint8{'h', 'e', 'l', 'l', 'o'}, "68656C6C6F"},
{"%s", []renamedUint8{'h', 'e', 'l', 'l', 'o'}, "hello"},
{"%q", []renamedUint8{'h', 'e', 'l', 'l', 'o'}, `"hello"`},
{"%v", renamedFloat32(22), "22"},
{"%v", renamedFloat64(33), "33"},
{"%v", renamedComplex64(3 + 4i), "(3+4i)"},
{"%v", renamedComplex128(4 - 3i), "(4-3i)"},
// Formatter
{"%x", F(1), "<x=F(1)>"},
{"%x", G(2), "2"},
{"%+v", S{F(4), G(5)}, "{F:<v=F(4)> G:5}"},
// GoStringer
{"%#v", G(6), "GoString(6)"},
{"%#v", S{F(7), G(8)}, "message.S{F:<v=F(7)>, G:GoString(8)}"},
// %T
{"%T", byte(0), "uint8"},
{"%T", reflect.ValueOf(nil), "reflect.Value"},
{"%T", (4 - 3i), "complex128"},
{"%T", renamedComplex128(4 - 3i), "message.renamedComplex128"},
{"%T", intVar, "int"},
{"%6T", &intVar, " *int"},
{"%10T", nil, " <nil>"},
{"%-10T", nil, "<nil> "},
// %p with pointers
{"%p", (*int)(nil), "0x0"},
{"%#p", (*int)(nil), "0"},
{"%p", &intVar, "0xPTR"},
{"%#p", &intVar, "PTR"},
{"%p", &array, "0xPTR"},
{"%p", &slice, "0xPTR"},
{"%8.2p", (*int)(nil), " 0x00"},
{"%-20.16p", &intVar, "0xPTR "},
// %p on non-pointers
{"%p", make(chan int), "0xPTR"},
{"%p", make(map[int]int), "0xPTR"},
{"%p", func() {}, "0xPTR"},
{"%p", 27, "%!p(int=27)"}, // not a pointer at all
{"%p", nil, "%!p(<nil>)"}, // nil on its own has no type ...
{"%#p", nil, "%!p(<nil>)"}, // ... and hence is not a pointer type.
// pointers with specified base
{"%b", &intVar, "PTR_b"},
{"%d", &intVar, "PTR_d"},
{"%o", &intVar, "PTR_o"},
{"%x", &intVar, "PTR_x"},
{"%X", &intVar, "PTR_X"},
// %v on pointers
{"%v", nil, "<nil>"},
{"%#v", nil, "<nil>"},
{"%v", (*int)(nil), "<nil>"},
{"%#v", (*int)(nil), "(*int)(nil)"},
{"%v", &intVar, "0xPTR"},
{"%#v", &intVar, "(*int)(0xPTR)"},
{"%8.2v", (*int)(nil), " <nil>"},
{"%-20.16v", &intVar, "0xPTR "},
// string method on pointer
{"%s", &pValue, "String(p)"}, // String method...
{"%p", &pValue, "0xPTR"}, // ... is not called with %p.
// %d on Stringer should give integer if possible
{"%s", time.Time{}.Month(), "January"},
{"%d", time.Time{}.Month(), "1"},
// erroneous things
{"%s %", "hello", "hello %!(NOVERB)"},
{"%s %.2", "hello", "hello %!(NOVERB)"},
// The "<nil>" show up because maps are printed by
// first obtaining a list of keys and then looking up
// each key. Since NaNs can be map keys but cannot
// be fetched directly, the lookup fails and returns a
// zero reflect.Value, which formats as <nil>.
// This test is just to check that it shows the two NaNs at all.
{"%v", map[float64]int{NaN: 1, NaN: 2}, "map[NaN:<nil> NaN:<nil>]"},
// Comparison of padding rules with C printf.
/*
C program:
#include <stdio.h>
char *format[] = {
"[%.2f]",
"[% .2f]",
"[%+.2f]",
"[%7.2f]",
"[% 7.2f]",
"[%+7.2f]",
"[% +7.2f]",
"[%07.2f]",
"[% 07.2f]",
"[%+07.2f]",
"[% +07.2f]"
};
int main(void) {
int i;
for(i = 0; i < 11; i++) {
printf("%s: ", format[i]);
printf(format[i], 1.0);
printf(" ");
printf(format[i], -1.0);
printf("\n");
}
}
Output:
[%.2f]: [1.00] [-1.00]
[% .2f]: [ 1.00] [-1.00]
[%+.2f]: [+1.00] [-1.00]
[%7.2f]: [ 1.00] [ -1.00]
[% 7.2f]: [ 1.00] [ -1.00]
[%+7.2f]: [ +1.00] [ -1.00]
[% +7.2f]: [ +1.00] [ -1.00]
[%07.2f]: [0001.00] [-001.00]
[% 07.2f]: [ 001.00] [-001.00]
[%+07.2f]: [+001.00] [-001.00]
[% +07.2f]: [+001.00] [-001.00]
*/
{"%.2f", 1.0, "1.00"},
{"%.2f", -1.0, "-1.00"},
{"% .2f", 1.0, " 1.00"},
{"% .2f", -1.0, "-1.00"},
{"%+.2f", 1.0, "+1.00"},
{"%+.2f", -1.0, "-1.00"},
{"%7.2f", 1.0, " 1.00"},
{"%7.2f", -1.0, " -1.00"},
{"% 7.2f", 1.0, " 1.00"},
{"% 7.2f", -1.0, " -1.00"},
{"%+7.2f", 1.0, " +1.00"},
{"%+7.2f", -1.0, " -1.00"},
{"% +7.2f", 1.0, " +1.00"},
{"% +7.2f", -1.0, " -1.00"},
// Padding with 0's indicates minimum number of integer digits minus the
// period, if present, and minus the sign if it is fixed.
// TODO: consider making this number the number of significant digits.
{"%07.2f", 1.0, "0,001.00"},
{"%07.2f", -1.0, "-0,001.00"},
{"% 07.2f", 1.0, " 001.00"},
{"% 07.2f", -1.0, "-001.00"},
{"%+07.2f", 1.0, "+001.00"},
{"%+07.2f", -1.0, "-001.00"},
{"% +07.2f", 1.0, "+001.00"},
{"% +07.2f", -1.0, "-001.00"},
// Complex numbers: exhaustively tested in TestComplexFormatting.
{"%7.2f", 1 + 2i, "( 1.00 +2.00i)"},
{"%+07.2f", -1 - 2i, "(-001.00-002.00i)"},
// Use spaces instead of zero if padding to the right.
{"%0-5s", "abc", "abc "},
{"%-05.1f", 1.0, "1.0 "},
// float and complex formatting should not change the padding width
// for other elements. See issue 14642.
{"%06v", []interface{}{+10.0, 10}, "[000,010 000,010]"},
{"%06v", []interface{}{-10.0, 10}, "[-000,010 000,010]"},
{"%06v", []interface{}{+10.0 + 10i, 10}, "[(000,010+00,010i) 000,010]"},
{"%06v", []interface{}{-10.0 + 10i, 10}, "[(-000,010+00,010i) 000,010]"},
// integer formatting should not alter padding for other elements.
{"%03.6v", []interface{}{1, 2.0, "x"}, "[000,001 002 00x]"},
{"%03.0v", []interface{}{0, 2.0, "x"}, "[ 002 000]"},
// Complex fmt used to leave the plus flag set for future entries in the array
// causing +2+0i and +3+0i instead of 2+0i and 3+0i.
{"%v", []complex64{1, 2, 3}, "[(1+0i) (2+0i) (3+0i)]"},
{"%v", []complex128{1, 2, 3}, "[(1+0i) (2+0i) (3+0i)]"},
// Incomplete format specification caused crash.
{"%.", 3, "%!.(int=3)"},
// Padding for complex numbers. Has been bad, then fixed, then bad again.
{"%+10.2f", +104.66 + 440.51i, "( +104.66 +440.51i)"},
{"%+10.2f", -104.66 + 440.51i, "( -104.66 +440.51i)"},
{"%+10.2f", +104.66 - 440.51i, "( +104.66 -440.51i)"},
{"%+10.2f", -104.66 - 440.51i, "( -104.66 -440.51i)"},
{"%010.2f", +104.66 + 440.51i, "(0,000,104.66+000,440.51i)"},
{"%+010.2f", +104.66 + 440.51i, "(+000,104.66+000,440.51i)"},
{"%+010.2f", -104.66 + 440.51i, "(-000,104.66+000,440.51i)"},
{"%+010.2f", +104.66 - 440.51i, "(+000,104.66-000,440.51i)"},
{"%+010.2f", -104.66 - 440.51i, "(-000,104.66-000,440.51i)"},
// []T where type T is a byte with a Stringer method.
{"%v", byteStringerSlice, "[X X X X X]"},
{"%s", byteStringerSlice, "hello"},
{"%q", byteStringerSlice, "\"hello\""},
{"%x", byteStringerSlice, "68656c6c6f"},
{"%X", byteStringerSlice, "68656C6C6F"},
{"%#v", byteStringerSlice, "[]message.byteStringer{0x68, 0x65, 0x6c, 0x6c, 0x6f}"},
// And the same for Formatter.
{"%v", byteFormatterSlice, "[X X X X X]"},
{"%s", byteFormatterSlice, "hello"},
{"%q", byteFormatterSlice, "\"hello\""},
{"%x", byteFormatterSlice, "68656c6c6f"},
{"%X", byteFormatterSlice, "68656C6C6F"},
// This next case seems wrong, but the docs say the Formatter wins here.
{"%#v", byteFormatterSlice, "[]message.byteFormatter{X, X, X, X, X}"},
// reflect.Value handled specially in Go 1.5, making it possible to
// see inside non-exported fields (which cannot be accessed with Interface()).
// Issue 8965.
{"%v", reflect.ValueOf(A{}).Field(0).String(), "<int Value>"}, // Equivalent to the old way.
{"%v", reflect.ValueOf(A{}).Field(0), "0"}, // Sees inside the field.
// verbs apply to the extracted value too.
{"%s", reflect.ValueOf("hello"), "hello"},
{"%q", reflect.ValueOf("hello"), `"hello"`},
{"%#04x", reflect.ValueOf(256), "0x0100"},
// invalid reflect.Value doesn't crash.
{"%v", reflect.Value{}, "<invalid reflect.Value>"},
{"%v", &reflect.Value{}, "<invalid Value>"},
{"%v", SI{reflect.Value{}}, "{<invalid Value>}"},
// Tests to check that not supported verbs generate an error string.
{"%☠", nil, "%!☠(<nil>)"},
{"%☠", interface{}(nil), "%!☠(<nil>)"},
{"%☠", int(0), "%!☠(int=0)"},
{"%☠", uint(0), "%!☠(uint=0)"},
{"%☠", []byte{0, 1}, "[%!☠(uint8=0) %!☠(uint8=1)]"},
{"%☠", []uint8{0, 1}, "[%!☠(uint8=0) %!☠(uint8=1)]"},
{"%☠", [1]byte{0}, "[%!☠(uint8=0)]"},
{"%☠", [1]uint8{0}, "[%!☠(uint8=0)]"},
{"%☠", "hello", "%!☠(string=hello)"},
{"%☠", 1.2345678, "%!☠(float64=1.2345678)"},
{"%☠", float32(1.2345678), "%!☠(float32=1.2345678)"},
{"%☠", 1.2345678 + 1.2345678i, "%!☠(complex128=(1.2345678+1.2345678i))"},
{"%☠", complex64(1.2345678 + 1.2345678i), "%!☠(complex64=(1.2345678+1.2345678i))"},
{"%☠", &intVar, "%!☠(*int=0xPTR)"},
{"%☠", make(chan int), "%!☠(chan int=0xPTR)"},
{"%☠", func() {}, "%!☠(func()=0xPTR)"},
{"%☠", reflect.ValueOf(renamedInt(0)), "%!☠(message.renamedInt=0)"},
{"%☠", SI{renamedInt(0)}, "{%!☠(message.renamedInt=0)}"},
{"%☠", &[]interface{}{I(1), G(2)}, "&[%!☠(message.I=1) %!☠(message.G=2)]"},
{"%☠", SI{&[]interface{}{I(1), G(2)}}, "{%!☠(*[]interface {}=&[1 2])}"},
{"%☠", reflect.Value{}, "<invalid reflect.Value>"},
{"%☠", map[float64]int{NaN: 1}, "map[%!☠(float64=NaN):%!☠(<nil>)]"},
}
// zeroFill generates zero-filled strings of the specified width. The length
// of the suffix (but not the prefix) is compensated for in the width calculation.
func zeroFill(prefix string, width int, suffix string) string {
return prefix + strings.Repeat("0", width-len(suffix)) + suffix
}
func TestSprintf(t *testing.T) {
p := NewPrinter(language.Und)
for _, tt := range fmtTests {
t.Run(fmt.Sprint(tt.fmt, "/", tt.val), func(t *testing.T) {
s := p.Sprintf(tt.fmt, tt.val)
i := strings.Index(tt.out, "PTR")
if i >= 0 && i < len(s) {
var pattern, chars string
switch {
case strings.HasPrefix(tt.out[i:], "PTR_b"):
pattern = "PTR_b"
chars = "01"
case strings.HasPrefix(tt.out[i:], "PTR_o"):
pattern = "PTR_o"
chars = "01234567"
case strings.HasPrefix(tt.out[i:], "PTR_d"):
pattern = "PTR_d"
chars = "0123456789"
case strings.HasPrefix(tt.out[i:], "PTR_x"):
pattern = "PTR_x"
chars = "0123456789abcdef"
case strings.HasPrefix(tt.out[i:], "PTR_X"):
pattern = "PTR_X"
chars = "0123456789ABCDEF"
default:
pattern = "PTR"
chars = "0123456789abcdefABCDEF"
}
p := s[:i] + pattern
for j := i; j < len(s); j++ {
if !strings.ContainsRune(chars, rune(s[j])) {
p += s[j:]
break
}
}
s = p
}
if s != tt.out {
if _, ok := tt.val.(string); ok {
// Don't requote the already-quoted strings.
// It's too confusing to read the errors.
t.Errorf("Sprintf(%q, %q) = <%s> want <%s>", tt.fmt, tt.val, s, tt.out)
} else {
t.Errorf("Sprintf(%q, %v) = %q want %q", tt.fmt, tt.val, s, tt.out)
}
}
})
}
}
var f float64
// TestComplexFormatting checks that a complex always formats to the same
// thing as if done by hand with two singleton prints.
func TestComplexFormatting(t *testing.T) {
var yesNo = []bool{true, false}
var values = []float64{1, 0, -1, posInf, negInf, NaN}
p := NewPrinter(language.Und)
for _, plus := range yesNo {
for _, zero := range yesNo {
for _, space := range yesNo {
for _, char := range "fFeEgG" {
realFmt := "%"
if zero {
realFmt += "0"
}
if space {
realFmt += " "
}
if plus {
realFmt += "+"
}
realFmt += "10.2"
realFmt += string(char)
// Imaginary part always has a sign, so force + and ignore space.
imagFmt := "%"
if zero {
imagFmt += "0"
}
imagFmt += "+"
imagFmt += "10.2"
imagFmt += string(char)
for _, realValue := range values {
for _, imagValue := range values {
one := p.Sprintf(realFmt, complex(realValue, imagValue))
two := p.Sprintf("("+realFmt+imagFmt+"i)", realValue, imagValue)
if math.IsNaN(imagValue) {
p := len(two) - len("NaNi)") - 1
if two[p] == ' ' {
two = two[:p] + "+" + two[p+1:]
} else {
two = two[:p+1] + "+" + two[p+1:]
}
}
if one != two {
t.Error(f, one, two)
}
}
}
}
}
}
}
}
type SE []interface{} // slice of empty; notational compactness.
var reorderTests = []struct {
format string
args SE
out string
}{
{"%[1]d", SE{1}, "1"},
{"%[2]d", SE{2, 1}, "1"},
{"%[2]d %[1]d", SE{1, 2}, "2 1"},
{"%[2]*[1]d", SE{2, 5}, " 2"},
{"%6.2f", SE{12.0}, " 12.00"}, // Explicit version of next line.
{"%[3]*.[2]*[1]f", SE{12.0, 2, 6}, " 12.00"},
{"%[1]*.[2]*[3]f", SE{6, 2, 12.0}, " 12.00"},
{"%10f", SE{12.0}, " 12.000000"},
{"%[1]*[3]f", SE{10, 99, 12.0}, " 12.000000"},
{"%.6f", SE{12.0}, "12.000000"}, // Explicit version of next line.
{"%.[1]*[3]f", SE{6, 99, 12.0}, "12.000000"},
{"%6.f", SE{12.0}, " 12"}, // // Explicit version of next line; empty precision means zero.
{"%[1]*.[3]f", SE{6, 3, 12.0}, " 12"},
// An actual use! Print the same arguments twice.
{"%d %d %d %#[1]o %#o %#o", SE{11, 12, 13}, "11 12 13 013 014 015"},
// Erroneous cases.
{"%[d", SE{2, 1}, "%!d(BADINDEX)"},
{"%]d", SE{2, 1}, "%!](int=2)d%!(EXTRA int=1)"},
{"%[]d", SE{2, 1}, "%!d(BADINDEX)"},
{"%[-3]d", SE{2, 1}, "%!d(BADINDEX)"},
{"%[99]d", SE{2, 1}, "%!d(BADINDEX)"},
{"%[3]", SE{2, 1}, "%!(NOVERB)"},
{"%[1].2d", SE{5, 6}, "%!d(BADINDEX)"},
{"%[1]2d", SE{2, 1}, "%!d(BADINDEX)"},
{"%3.[2]d", SE{7}, "%!d(BADINDEX)"},
{"%.[2]d", SE{7}, "%!d(BADINDEX)"},
{"%d %d %d %#[1]o %#o %#o %#o", SE{11, 12, 13}, "11 12 13 013 014 015 %!o(MISSING)"},
{"%[5]d %[2]d %d", SE{1, 2, 3}, "%!d(BADINDEX) 2 3"},
{"%d %[3]d %d", SE{1, 2}, "1 %!d(BADINDEX) 2"}, // Erroneous index does not affect sequence.
{"%.[]", SE{}, "%!](BADINDEX)"}, // Issue 10675
{"%.-3d", SE{42}, "%!-(int=42)3d"}, // TODO: Should this set return better error messages?
// The following messages are interpreted as if there is no substitution,
// in which case it is okay to have extra arguments. This is different
// semantics from the fmt package.
{"%2147483648d", SE{42}, "%!(NOVERB)"},
{"%-2147483648d", SE{42}, "%!(NOVERB)"},
{"%.2147483648d", SE{42}, "%!(NOVERB)"},
}
func TestReorder(t *testing.T) {
p := NewPrinter(language.Und)
for _, tc := range reorderTests {
t.Run(fmt.Sprint(tc.format, "/", tc.args), func(t *testing.T) {
s := p.Sprintf(tc.format, tc.args...)
if s != tc.out {
t.Errorf("Sprintf(%q, %v) = %q want %q", tc.format, tc.args, s, tc.out)
}
})
}
}
func BenchmarkSprintfPadding(b *testing.B) {
b.RunParallel(func(pb *testing.PB) {
p := NewPrinter(language.English)
for pb.Next() {
p.Sprintf("%16f", 1.0)
}
})
}
func BenchmarkSprintfEmpty(b *testing.B) {
b.RunParallel(func(pb *testing.PB) {
p := NewPrinter(language.English)
for pb.Next() {
p.Sprintf("")
}
})
}
func BenchmarkSprintfString(b *testing.B) {
b.RunParallel(func(pb *testing.PB) {
p := NewPrinter(language.English)
for pb.Next() {
p.Sprintf("%s", "hello")
}
})
}
func BenchmarkSprintfTruncateString(b *testing.B) {
b.RunParallel(func(pb *testing.PB) {
p := NewPrinter(language.English)
for pb.Next() {
p.Sprintf("%.3s", "日本語日本語日本語")
}
})
}
func BenchmarkSprintfQuoteString(b *testing.B) {
b.RunParallel(func(pb *testing.PB) {
p := NewPrinter(language.English)
for pb.Next() {
p.Sprintf("%q", "日本語日本語日本語")
}
})
}
func BenchmarkSprintfInt(b *testing.B) {
b.RunParallel(func(pb *testing.PB) {
p := NewPrinter(language.English)
for pb.Next() {
p.Sprintf("%d", 5)
}
})
}
func BenchmarkSprintfIntInt(b *testing.B) {
b.RunParallel(func(pb *testing.PB) {
p := NewPrinter(language.English)
for pb.Next() {
p.Sprintf("%d %d", 5, 6)
}
})
}
func BenchmarkSprintfPrefixedInt(b *testing.B) {
b.RunParallel(func(pb *testing.PB) {
p := NewPrinter(language.English)
for pb.Next() {
p.Sprintf("This is some meaningless prefix text that needs to be scanned %d", 6)
}
})
}
func BenchmarkSprintfFloat(b *testing.B) {
b.RunParallel(func(pb *testing.PB) {
p := NewPrinter(language.English)
for pb.Next() {
p.Sprintf("%g", 5.23184)
}
})
}
func BenchmarkSprintfComplex(b *testing.B) {
b.RunParallel(func(pb *testing.PB) {
p := NewPrinter(language.English)
for pb.Next() {
p.Sprintf("%f", 5.23184+5.23184i)
}
})
}
func BenchmarkSprintfBoolean(b *testing.B) {
b.RunParallel(func(pb *testing.PB) {
p := NewPrinter(language.English)
for pb.Next() {
p.Sprintf("%t", true)
}
})
}
func BenchmarkSprintfHexString(b *testing.B) {
b.RunParallel(func(pb *testing.PB) {
p := NewPrinter(language.English)
for pb.Next() {
p.Sprintf("% #x", "0123456789abcdef")
}
})
}
func BenchmarkSprintfHexBytes(b *testing.B) {
data := []byte("0123456789abcdef")
b.RunParallel(func(pb *testing.PB) {
p := NewPrinter(language.English)
for pb.Next() {
p.Sprintf("% #x", data)
}
})
}
func BenchmarkSprintfBytes(b *testing.B) {
data := []byte("0123456789abcdef")
b.RunParallel(func(pb *testing.PB) {
p := NewPrinter(language.English)
for pb.Next() {
p.Sprintf("%v", data)
}
})
}
func BenchmarkSprintfStringer(b *testing.B) {
stringer := I(12345)
b.RunParallel(func(pb *testing.PB) {
p := NewPrinter(language.English)
for pb.Next() {
p.Sprintf("%v", stringer)
}
})
}
func BenchmarkSprintfStructure(b *testing.B) {
s := &[]interface{}{SI{12345}, map[int]string{0: "hello"}}
b.RunParallel(func(pb *testing.PB) {
p := NewPrinter(language.English)
for pb.Next() {
p.Sprintf("%#v", s)
}
})
}
func BenchmarkManyArgs(b *testing.B) {
b.RunParallel(func(pb *testing.PB) {
var buf bytes.Buffer
p := NewPrinter(language.English)
for pb.Next() {
buf.Reset()
p.Fprintf(&buf, "%2d/%2d/%2d %d:%d:%d %s %s\n", 3, 4, 5, 11, 12, 13, "hello", "world")
}
})
}
func BenchmarkFprintInt(b *testing.B) {
var buf bytes.Buffer
p := NewPrinter(language.English)
for i := 0; i < b.N; i++ {
buf.Reset()
p.Fprint(&buf, 123456)
}
}
func BenchmarkFprintfBytes(b *testing.B) {
data := []byte(string("0123456789"))
var buf bytes.Buffer
p := NewPrinter(language.English)
for i := 0; i < b.N; i++ {
buf.Reset()
p.Fprintf(&buf, "%s", data)
}
}
func BenchmarkFprintIntNoAlloc(b *testing.B) {
var x interface{} = 123456
var buf bytes.Buffer
p := NewPrinter(language.English)
for i := 0; i < b.N; i++ {
buf.Reset()
p.Fprint(&buf, x)
}
}
var mallocBuf bytes.Buffer
var mallocPointer *int // A pointer so we know the interface value won't allocate.
var mallocTest = []struct {
count int
desc string
fn func(p *Printer)
}{
{0, `Sprintf("")`, func(p *Printer) { p.Sprintf("") }},
{1, `Sprintf("xxx")`, func(p *Printer) { p.Sprintf("xxx") }},
{2, `Sprintf("%x")`, func(p *Printer) { p.Sprintf("%x", 7) }},
{2, `Sprintf("%s")`, func(p *Printer) { p.Sprintf("%s", "hello") }},
{3, `Sprintf("%x %x")`, func(p *Printer) { p.Sprintf("%x %x", 7, 112) }},
{2, `Sprintf("%g")`, func(p *Printer) { p.Sprintf("%g", float32(3.14159)) }}, // TODO: Can this be 1?
{1, `Fprintf(buf, "%s")`, func(p *Printer) { mallocBuf.Reset(); p.Fprintf(&mallocBuf, "%s", "hello") }},
// If the interface value doesn't need to allocate, amortized allocation overhead should be zero.
{0, `Fprintf(buf, "%x %x %x")`, func(p *Printer) {
mallocBuf.Reset()
p.Fprintf(&mallocBuf, "%x %x %x", mallocPointer, mallocPointer, mallocPointer)
}},
}
var _ bytes.Buffer
func TestCountMallocs(t *testing.T) {
switch {
case testing.Short():
t.Skip("skipping malloc count in short mode")
case runtime.GOMAXPROCS(0) > 1:
t.Skip("skipping; GOMAXPROCS>1")
// TODO: detect race detecter enabled.
// case race.Enabled:
// t.Skip("skipping malloc count under race detector")
}
p := NewPrinter(language.English)
for _, mt := range mallocTest {
mallocs := testing.AllocsPerRun(100, func() { mt.fn(p) })
if got, max := mallocs, float64(mt.count); got > max {
t.Errorf("%s: got %v allocs, want <=%v", mt.desc, got, max)
}
}
}
type flagPrinter struct{}
func (flagPrinter) Format(f fmt.State, c rune) {
s := "%"
for i := 0; i < 128; i++ {
if f.Flag(i) {
s += string(i)
}
}
if w, ok := f.Width(); ok {
s += fmt.Sprintf("%d", w)
}
if p, ok := f.Precision(); ok {
s += fmt.Sprintf(".%d", p)
}
s += string(c)
io.WriteString(f, "["+s+"]")
}
var flagtests = []struct {
in string
out string
}{
{"%a", "[%a]"},
{"%-a", "[%-a]"},
{"%+a", "[%+a]"},
{"%#a", "[%#a]"},
{"% a", "[% a]"},
{"%0a", "[%0a]"},
{"%1.2a", "[%1.2a]"},
{"%-1.2a", "[%-1.2a]"},
{"%+1.2a", "[%+1.2a]"},
{"%-+1.2a", "[%+-1.2a]"},
{"%-+1.2abc", "[%+-1.2a]bc"},
{"%-1.2abc", "[%-1.2a]bc"},
}
func TestFlagParser(t *testing.T) {
var flagprinter flagPrinter
for _, tt := range flagtests {
s := NewPrinter(language.Und).Sprintf(tt.in, &flagprinter)
if s != tt.out {
t.Errorf("Sprintf(%q, &flagprinter) => %q, want %q", tt.in, s, tt.out)
}
}
}
func TestStructPrinter(t *testing.T) {
type T struct {
a string
b string
c int
}
var s T
s.a = "abc"
s.b = "def"
s.c = 123
var tests = []struct {
fmt string
out string
}{
{"%v", "{abc def 123}"},
{"%+v", "{a:abc b:def c:123}"},
{"%#v", `message.T{a:"abc", b:"def", c:123}`},
}
p := NewPrinter(language.Und)
for _, tt := range tests {
out := p.Sprintf(tt.fmt, s)
if out != tt.out {
t.Errorf("Sprintf(%q, s) = %#q, want %#q", tt.fmt, out, tt.out)
}
// The same but with a pointer.
out = p.Sprintf(tt.fmt, &s)
if out != "&"+tt.out {
t.Errorf("Sprintf(%q, &s) = %#q, want %#q", tt.fmt, out, "&"+tt.out)
}
}
}
func TestSlicePrinter(t *testing.T) {
p := NewPrinter(language.Und)
slice := []int{}
s := p.Sprint(slice)
if s != "[]" {
t.Errorf("empty slice printed as %q not %q", s, "[]")
}
slice = []int{1, 2, 3}
s = p.Sprint(slice)
if s != "[1 2 3]" {
t.Errorf("slice: got %q expected %q", s, "[1 2 3]")
}
s = p.Sprint(&slice)
if s != "&[1 2 3]" {
t.Errorf("&slice: got %q expected %q", s, "&[1 2 3]")
}
}
// presentInMap checks map printing using substrings so we don't depend on the
// print order.
func presentInMap(s string, a []string, t *testing.T) {
for i := 0; i < len(a); i++ {
loc := strings.Index(s, a[i])
if loc < 0 {
t.Errorf("map print: expected to find %q in %q", a[i], s)
}
// make sure the match ends here
loc += len(a[i])
if loc >= len(s) || (s[loc] != ' ' && s[loc] != ']') {
t.Errorf("map print: %q not properly terminated in %q", a[i], s)
}
}
}
func TestMapPrinter(t *testing.T) {
p := NewPrinter(language.Und)
m0 := make(map[int]string)
s := p.Sprint(m0)
if s != "map[]" {
t.Errorf("empty map printed as %q not %q", s, "map[]")
}
m1 := map[int]string{1: "one", 2: "two", 3: "three"}
a := []string{"1:one", "2:two", "3:three"}
presentInMap(p.Sprintf("%v", m1), a, t)
presentInMap(p.Sprint(m1), a, t)
// Pointer to map prints the same but with initial &.
if !strings.HasPrefix(p.Sprint(&m1), "&") {
t.Errorf("no initial & for address of map")
}
presentInMap(p.Sprintf("%v", &m1), a, t)
presentInMap(p.Sprint(&m1), a, t)
}
func TestEmptyMap(t *testing.T) {
const emptyMapStr = "map[]"
var m map[string]int
p := NewPrinter(language.Und)
s := p.Sprint(m)
if s != emptyMapStr {
t.Errorf("nil map printed as %q not %q", s, emptyMapStr)
}
m = make(map[string]int)
s = p.Sprint(m)
if s != emptyMapStr {
t.Errorf("empty map printed as %q not %q", s, emptyMapStr)
}
}
// TestBlank checks that Sprint (and hence Print, Fprint) puts spaces in the
// right places, that is, between arg pairs in which neither is a string.
func TestBlank(t *testing.T) {
p := NewPrinter(language.Und)
got := p.Sprint("<", 1, ">:", 1, 2, 3, "!")
expect := "<1>:1 2 3!"
if got != expect {
t.Errorf("got %q expected %q", got, expect)
}
}
// TestBlankln checks that Sprintln (and hence Println, Fprintln) puts spaces in
// the right places, that is, between all arg pairs.
func TestBlankln(t *testing.T) {
p := NewPrinter(language.Und)
got := p.Sprintln("<", 1, ">:", 1, 2, 3, "!")
expect := "< 1 >: 1 2 3 !\n"
if got != expect {
t.Errorf("got %q expected %q", got, expect)
}
}
// TestFormatterPrintln checks Formatter with Sprint, Sprintln, Sprintf.
func TestFormatterPrintln(t *testing.T) {
p := NewPrinter(language.Und)
f := F(1)
expect := "<v=F(1)>\n"
s := p.Sprint(f, "\n")
if s != expect {
t.Errorf("Sprint wrong with Formatter: expected %q got %q", expect, s)
}
s = p.Sprintln(f)
if s != expect {
t.Errorf("Sprintln wrong with Formatter: expected %q got %q", expect, s)
}
s = p.Sprintf("%v\n", f)
if s != expect {
t.Errorf("Sprintf wrong with Formatter: expected %q got %q", expect, s)
}
}
func args(a ...interface{}) []interface{} { return a }
var startests = []struct {
fmt string
in []interface{}
out string
}{
{"%*d", args(4, 42), " 42"},
{"%-*d", args(4, 42), "42 "},
{"%*d", args(-4, 42), "42 "},
{"%-*d", args(-4, 42), "42 "},
{"%.*d", args(4, 42), "0,042"},
{"%*.*d", args(8, 4, 42), " 0,042"},
{"%0*d", args(4, 42), "0,042"},
// Some non-int types for width. (Issue 10732).
{"%0*d", args(uint(4), 42), "0,042"},
{"%0*d", args(uint64(4), 42), "0,042"},
{"%0*d", args('\x04', 42), "0,042"},
{"%0*d", args(uintptr(4), 42), "0,042"},
// erroneous
{"%*d", args(nil, 42), "%!(BADWIDTH)42"},
{"%*d", args(int(1e7), 42), "%!(BADWIDTH)42"},
{"%*d", args(int(-1e7), 42), "%!(BADWIDTH)42"},
{"%.*d", args(nil, 42), "%!(BADPREC)42"},
{"%.*d", args(-1, 42), "%!(BADPREC)42"},
{"%.*d", args(int(1e7), 42), "%!(BADPREC)42"},
{"%.*d", args(uint(1e7), 42), "%!(BADPREC)42"},
{"%.*d", args(uint64(1<<63), 42), "%!(BADPREC)42"}, // Huge negative (-inf).
{"%.*d", args(uint64(1<<64-1), 42), "%!(BADPREC)42"}, // Small negative (-1).
{"%*d", args(5, "foo"), "%!d(string= foo)"},
{"%*% %d", args(20, 5), "% 5"},
{"%*", args(4), "%!(NOVERB)"},
}
func TestWidthAndPrecision(t *testing.T) {
p := NewPrinter(language.Und)
for i, tt := range startests {
t.Run(fmt.Sprint(tt.fmt, tt.in), func(t *testing.T) {
s := p.Sprintf(tt.fmt, tt.in...)
if s != tt.out {
t.Errorf("#%d: %q: got %q expected %q", i, tt.fmt, s, tt.out)
}
})
}
}
// PanicS is a type that panics in String.
type PanicS struct {
message interface{}
}
// Value receiver.
func (p PanicS) String() string {
panic(p.message)
}
// PanicGo is a type that panics in GoString.
type PanicGo struct {
message interface{}
}
// Value receiver.
func (p PanicGo) GoString() string {
panic(p.message)
}
// PanicF is a type that panics in Format.
type PanicF struct {
message interface{}
}
// Value receiver.
func (p PanicF) Format(f fmt.State, c rune) {
panic(p.message)
}
var panictests = []struct {
desc string
fmt string
in interface{}
out string
}{
// String
{"String", "%s", (*PanicS)(nil), "<nil>"}, // nil pointer special case
{"String", "%s", PanicS{io.ErrUnexpectedEOF}, "%!s(PANIC=unexpected EOF)"},
{"String", "%s", PanicS{3}, "%!s(PANIC=3)"},
// GoString
{"GoString", "%#v", (*PanicGo)(nil), "<nil>"}, // nil pointer special case
{"GoString", "%#v", PanicGo{io.ErrUnexpectedEOF}, "%!v(PANIC=unexpected EOF)"},
{"GoString", "%#v", PanicGo{3}, "%!v(PANIC=3)"},
// Issue 18282. catchPanic should not clear fmtFlags permanently.
{"Issue 18282", "%#v", []interface{}{PanicGo{3}, PanicGo{3}}, "[]interface {}{%!v(PANIC=3), %!v(PANIC=3)}"},
// Format
{"Format", "%s", (*PanicF)(nil), "<nil>"}, // nil pointer special case
{"Format", "%s", PanicF{io.ErrUnexpectedEOF}, "%!s(PANIC=unexpected EOF)"},
{"Format", "%s", PanicF{3}, "%!s(PANIC=3)"},
}
func TestPanics(t *testing.T) {
p := NewPrinter(language.Und)
for i, tt := range panictests {
t.Run(fmt.Sprint(tt.desc, "/", tt.fmt, "/", tt.in), func(t *testing.T) {
s := p.Sprintf(tt.fmt, tt.in)
if s != tt.out {
t.Errorf("%d: %q: got %q expected %q", i, tt.fmt, s, tt.out)
}
})
}
}
// recurCount tests that erroneous String routine doesn't cause fatal recursion.
var recurCount = 0
type Recur struct {
i int
failed *bool
}
func (r *Recur) String() string {
p := NewPrinter(language.Und)
if recurCount++; recurCount > 10 {
*r.failed = true
return "FAIL"
}
// This will call badVerb. Before the fix, that would cause us to recur into
// this routine to print %!p(value). Now we don't call the user's method
// during an error.
return p.Sprintf("recur@%p value: %d", r, r.i)
}
func TestBadVerbRecursion(t *testing.T) {
p := NewPrinter(language.Und)
failed := false
r := &Recur{3, &failed}
p.Sprintf("recur@%p value: %d\n", &r, r.i)
if failed {
t.Error("fail with pointer")
}
failed = false
r = &Recur{4, &failed}
p.Sprintf("recur@%p, value: %d\n", r, r.i)
if failed {
t.Error("fail with value")
}
}
func TestNilDoesNotBecomeTyped(t *testing.T) {
p := NewPrinter(language.Und)
type A struct{}
type B struct{}
var a *A = nil
var b B = B{}
got := p.Sprintf("%s %s %s %s %s", nil, a, nil, b, nil) // go vet should complain about this line.
const expect = "%!s(<nil>) %!s(*message.A=<nil>) %!s(<nil>) {} %!s(<nil>)"
if got != expect {
t.Errorf("expected:\n\t%q\ngot:\n\t%q", expect, got)
}
}
var formatterFlagTests = []struct {
in string
val interface{}
out string
}{
// scalar values with the (unused by fmt) 'a' verb.
{"%a", flagPrinter{}, "[%a]"},
{"%-a", flagPrinter{}, "[%-a]"},
{"%+a", flagPrinter{}, "[%+a]"},
{"%#a", flagPrinter{}, "[%#a]"},
{"% a", flagPrinter{}, "[% a]"},
{"%0a", flagPrinter{}, "[%0a]"},
{"%1.2a", flagPrinter{}, "[%1.2a]"},
{"%-1.2a", flagPrinter{}, "[%-1.2a]"},
{"%+1.2a", flagPrinter{}, "[%+1.2a]"},
{"%-+1.2a", flagPrinter{}, "[%+-1.2a]"},
{"%-+1.2abc", flagPrinter{}, "[%+-1.2a]bc"},
{"%-1.2abc", flagPrinter{}, "[%-1.2a]bc"},
// composite values with the 'a' verb
{"%a", [1]flagPrinter{}, "[[%a]]"},
{"%-a", [1]flagPrinter{}, "[[%-a]]"},
{"%+a", [1]flagPrinter{}, "[[%+a]]"},
{"%#a", [1]flagPrinter{}, "[[%#a]]"},
{"% a", [1]flagPrinter{}, "[[% a]]"},
{"%0a", [1]flagPrinter{}, "[[%0a]]"},
{"%1.2a", [1]flagPrinter{}, "[[%1.2a]]"},
{"%-1.2a", [1]flagPrinter{}, "[[%-1.2a]]"},
{"%+1.2a", [1]flagPrinter{}, "[[%+1.2a]]"},
{"%-+1.2a", [1]flagPrinter{}, "[[%+-1.2a]]"},
{"%-+1.2abc", [1]flagPrinter{}, "[[%+-1.2a]]bc"},
{"%-1.2abc", [1]flagPrinter{}, "[[%-1.2a]]bc"},
// simple values with the 'v' verb
{"%v", flagPrinter{}, "[%v]"},
{"%-v", flagPrinter{}, "[%-v]"},
{"%+v", flagPrinter{}, "[%+v]"},
{"%#v", flagPrinter{}, "[%#v]"},
{"% v", flagPrinter{}, "[% v]"},
{"%0v", flagPrinter{}, "[%0v]"},
{"%1.2v", flagPrinter{}, "[%1.2v]"},
{"%-1.2v", flagPrinter{}, "[%-1.2v]"},
{"%+1.2v", flagPrinter{}, "[%+1.2v]"},
{"%-+1.2v", flagPrinter{}, "[%+-1.2v]"},
{"%-+1.2vbc", flagPrinter{}, "[%+-1.2v]bc"},
{"%-1.2vbc", flagPrinter{}, "[%-1.2v]bc"},
// composite values with the 'v' verb.
{"%v", [1]flagPrinter{}, "[[%v]]"},
{"%-v", [1]flagPrinter{}, "[[%-v]]"},
{"%+v", [1]flagPrinter{}, "[[%+v]]"},
{"%#v", [1]flagPrinter{}, "[1]message.flagPrinter{[%#v]}"},
{"% v", [1]flagPrinter{}, "[[% v]]"},
{"%0v", [1]flagPrinter{}, "[[%0v]]"},
{"%1.2v", [1]flagPrinter{}, "[[%1.2v]]"},
{"%-1.2v", [1]flagPrinter{}, "[[%-1.2v]]"},
{"%+1.2v", [1]flagPrinter{}, "[[%+1.2v]]"},
{"%-+1.2v", [1]flagPrinter{}, "[[%+-1.2v]]"},
{"%-+1.2vbc", [1]flagPrinter{}, "[[%+-1.2v]]bc"},
{"%-1.2vbc", [1]flagPrinter{}, "[[%-1.2v]]bc"},
}
func TestFormatterFlags(t *testing.T) {
p := NewPrinter(language.Und)
for _, tt := range formatterFlagTests {
s := p.Sprintf(tt.in, tt.val)
if s != tt.out {
t.Errorf("Sprintf(%q, %T) = %q, want %q", tt.in, tt.val, s, tt.out)
}
}
}
func TestParsenum(t *testing.T) {
testCases := []struct {
s string
start, end int
num int
isnum bool
newi int
}{
{"a123", 0, 4, 0, false, 0},
{"1234", 1, 1, 0, false, 1},
{"123a", 0, 4, 123, true, 3},
{"12a3", 0, 4, 12, true, 2},
{"1234", 0, 4, 1234, true, 4},
{"1a234", 1, 3, 0, false, 1},
}
for _, tt := range testCases {
num, isnum, newi := parsenum(tt.s, tt.start, tt.end)
if num != tt.num || isnum != tt.isnum || newi != tt.newi {
t.Errorf("parsenum(%q, %d, %d) = %d, %v, %d, want %d, %v, %d", tt.s, tt.start, tt.end, num, isnum, newi, tt.num, tt.isnum, tt.newi)
}
}
}
Reference in a new issue View git blame Copy permalink