From 621e49bb465f500cc46d47e39e828cf76d6381d7 Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Tue, 24 Jul 2018 14:35:44 +0200 Subject: update vendor --- vendor/golang.org/x/text/message/fmt_test.go | 1871 ++++++++++++++++++++++++++ 1 file changed, 1871 insertions(+) create mode 100644 vendor/golang.org/x/text/message/fmt_test.go (limited to 'vendor/golang.org/x/text/message/fmt_test.go') diff --git a/vendor/golang.org/x/text/message/fmt_test.go b/vendor/golang.org/x/text/message/fmt_test.go new file mode 100644 index 0000000..2d6872b --- /dev/null +++ b/vendor/golang.org/x/text/message/fmt_test.go @@ -0,0 +1,1871 @@ +// 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), `"�"`}, + {"%+q", string(0x110000), `"\ufffd"`}, + {"%#q", string(0x110000), "`�`"}, + {"%#+q", string(0x110000), "`�`"}, + + // 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, "�"}, + {"%c", 0xDC80, "�"}, + {"%c", rune(0x110000), "�"}, + {"%c", int64(0xFFFFFFFFF), "�"}, + {"%c", uint64(0xFFFFFFFFF), "�"}, + + // 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, `'�'`}, + {"%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, " "}, + {"%-10v", 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 ]"}, + {"%v", barray, "[1 2 3 4 5]"}, + {"%v", &array, "&[1 2 3 4 5]"}, + {"%v", &iarray, "&[1 hello 2.5 ]"}, + {"%v", &barray, "&[1 2 3 4 5]"}, + + // slices + {"%v", slice, "[1 2 3 4 5]"}, + {"%v", islice, "[1 hello 2.5 ]"}, + {"%v", bslice, "[1 2 3 4 5]"}, + {"%v", &slice, "&[1 2 3 4 5]"}, + {"%v", &islice, "&[1 hello 2.5 ]"}, + {"%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", G(2), "2"}, + {"%+v", S{F(4), G(5)}, "{F: G:5}"}, + + // GoStringer + {"%#v", G(6), "GoString(6)"}, + {"%#v", S{F(7), G(8)}, "message.S{F:, 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, " "}, + {"%-10T", 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 on its own has no type ... + {"%#p", nil, "%!p()"}, // ... 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, ""}, + {"%#v", nil, ""}, + {"%v", (*int)(nil), ""}, + {"%#v", (*int)(nil), "(*int)(nil)"}, + {"%v", &intVar, "0xPTR"}, + {"%#v", &intVar, "(*int)(0xPTR)"}, + {"%8.2v", (*int)(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 "" 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 . + // This test is just to check that it shows the two NaNs at all. + {"%v", map[float64]int{NaN: 1, NaN: 2}, "map[NaN: NaN:]"}, + + // Comparison of padding rules with C printf. + /* + C program: + #include + + 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(), ""}, // 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{}, ""}, + {"%v", &reflect.Value{}, ""}, + {"%v", SI{reflect.Value{}}, "{}"}, + + // Tests to check that not supported verbs generate an error string. + {"%☠", nil, "%!☠()"}, + {"%☠", interface{}(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{}, ""}, + {"%☠", map[float64]int{NaN: 1}, "map[%!☠(float64=NaN):%!☠()]"}, +} + +// 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 := "\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 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 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 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{} + + // indirect the Sprintf call through this noVetWarn variable to avoid + // "go test" failing vet checks in Go 1.10+. + noVetWarn := p.Sprintf + got := noVetWarn("%s %s %s %s %s", nil, a, nil, b, nil) + + const expect = "%!s() %!s(*message.A=) %!s() {} %!s()" + 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) + } + } +} -- cgit v1.2.3