Golang程序
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320行
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10.26 KB
// Copyright 2016 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 tar
import (
"math"
"strings"
"testing"
"time"
)
func TestFitsInBase256(t *testing.T) {
vectors := []struct {
in int64
width int
ok bool
}{
{+1, 8, true},
{0, 8, true},
{-1, 8, true},
{1 << 56, 8, false},
{(1 << 56) - 1, 8, true},
{-1 << 56, 8, true},
{(-1 << 56) - 1, 8, false},
{121654, 8, true},
{-9849849, 8, true},
{math.MaxInt64, 9, true},
{0, 9, true},
{math.MinInt64, 9, true},
{math.MaxInt64, 12, true},
{0, 12, true},
{math.MinInt64, 12, true},
}
for _, v := range vectors {
ok := fitsInBase256(v.width, v.in)
if ok != v.ok {
t.Errorf("fitsInBase256(%d, %d): got %v, want %v", v.in, v.width, ok, v.ok)
}
}
}
func TestParseNumeric(t *testing.T) {
vectors := []struct {
in string
want int64
ok bool
}{
// Test base-256 (binary) encoded values.
{"", 0, true},
{"\x80", 0, true},
{"\x80\x00", 0, true},
{"\x80\x00\x00", 0, true},
{"\xbf", (1 << 6) - 1, true},
{"\xbf\xff", (1 << 14) - 1, true},
{"\xbf\xff\xff", (1 << 22) - 1, true},
{"\xff", -1, true},
{"\xff\xff", -1, true},
{"\xff\xff\xff", -1, true},
{"\xc0", -1 * (1 << 6), true},
{"\xc0\x00", -1 * (1 << 14), true},
{"\xc0\x00\x00", -1 * (1 << 22), true},
{"\x87\x76\xa2\x22\xeb\x8a\x72\x61", 537795476381659745, true},
{"\x80\x00\x00\x00\x07\x76\xa2\x22\xeb\x8a\x72\x61", 537795476381659745, true},
{"\xf7\x76\xa2\x22\xeb\x8a\x72\x61", -615126028225187231, true},
{"\xff\xff\xff\xff\xf7\x76\xa2\x22\xeb\x8a\x72\x61", -615126028225187231, true},
{"\x80\x7f\xff\xff\xff\xff\xff\xff\xff", math.MaxInt64, true},
{"\x80\x80\x00\x00\x00\x00\x00\x00\x00", 0, false},
{"\xff\x80\x00\x00\x00\x00\x00\x00\x00", math.MinInt64, true},
{"\xff\x7f\xff\xff\xff\xff\xff\xff\xff", 0, false},
{"\xf5\xec\xd1\xc7\x7e\x5f\x26\x48\x81\x9f\x8f\x9b", 0, false},
// Test base-8 (octal) encoded values.
{"0000000\x00", 0, true},
{" \x0000000\x00", 0, true},
{" \x0000003\x00", 3, true},
{"00000000227\x00", 0227, true},
{"032033\x00 ", 032033, true},
{"320330\x00 ", 0320330, true},
{"0000660\x00 ", 0660, true},
{"\x00 0000660\x00 ", 0660, true},
{"0123456789abcdef", 0, false},
{"0123456789\x00abcdef", 0, false},
{"01234567\x0089abcdef", 342391, true},
{"0123\x7e\x5f\x264123", 0, false},
}
for _, v := range vectors {
var p parser
got := p.parseNumeric([]byte(v.in))
ok := (p.err == nil)
if ok != v.ok {
if v.ok {
t.Errorf("parseNumeric(%q): got parsing failure, want success", v.in)
} else {
t.Errorf("parseNumeric(%q): got parsing success, want failure", v.in)
}
}
if ok && got != v.want {
t.Errorf("parseNumeric(%q): got %d, want %d", v.in, got, v.want)
}
}
}
func TestFormatNumeric(t *testing.T) {
vectors := []struct {
in int64
want string
ok bool
}{
// Test base-256 (binary) encoded values.
{-1, "\xff", true},
{-1, "\xff\xff", true},
{-1, "\xff\xff\xff", true},
{(1 << 0), "0", false},
{(1 << 8) - 1, "\x80\xff", true},
{(1 << 8), "0\x00", false},
{(1 << 16) - 1, "\x80\xff\xff", true},
{(1 << 16), "00\x00", false},
{-1 * (1 << 0), "\xff", true},
{-1*(1<<0) - 1, "0", false},
{-1 * (1 << 8), "\xff\x00", true},
{-1*(1<<8) - 1, "0\x00", false},
{-1 * (1 << 16), "\xff\x00\x00", true},
{-1*(1<<16) - 1, "00\x00", false},
{537795476381659745, "0000000\x00", false},
{537795476381659745, "\x80\x00\x00\x00\x07\x76\xa2\x22\xeb\x8a\x72\x61", true},
{-615126028225187231, "0000000\x00", false},
{-615126028225187231, "\xff\xff\xff\xff\xf7\x76\xa2\x22\xeb\x8a\x72\x61", true},
{math.MaxInt64, "0000000\x00", false},
{math.MaxInt64, "\x80\x00\x00\x00\x7f\xff\xff\xff\xff\xff\xff\xff", true},
{math.MinInt64, "0000000\x00", false},
{math.MinInt64, "\xff\xff\xff\xff\x80\x00\x00\x00\x00\x00\x00\x00", true},
{math.MaxInt64, "\x80\x7f\xff\xff\xff\xff\xff\xff\xff", true},
{math.MinInt64, "\xff\x80\x00\x00\x00\x00\x00\x00\x00", true},
}
for _, v := range vectors {
var f formatter
got := make([]byte, len(v.want))
f.formatNumeric(got, v.in)
ok := (f.err == nil)
if ok != v.ok {
if v.ok {
t.Errorf("formatNumeric(%d): got formatting failure, want success", v.in)
} else {
t.Errorf("formatNumeric(%d): got formatting success, want failure", v.in)
}
}
if string(got) != v.want {
t.Errorf("formatNumeric(%d): got %q, want %q", v.in, got, v.want)
}
}
}
func TestParsePAXTime(t *testing.T) {
vectors := []struct {
in string
want time.Time
ok bool
}{
{"1350244992.023960108", time.Unix(1350244992, 23960108), true},
{"1350244992.02396010", time.Unix(1350244992, 23960100), true},
{"1350244992.0239601089", time.Unix(1350244992, 23960108), true},
{"1350244992.3", time.Unix(1350244992, 300000000), true},
{"1350244992", time.Unix(1350244992, 0), true},
{"-1.000000001", time.Unix(-1, -1e0+0e0), true},
{"-1.000001", time.Unix(-1, -1e3+0e0), true},
{"-1.001000", time.Unix(-1, -1e6+0e0), true},
{"-1", time.Unix(-1, -0e0+0e0), true},
{"-1.999000", time.Unix(-1, -1e9+1e6), true},
{"-1.999999", time.Unix(-1, -1e9+1e3), true},
{"-1.999999999", time.Unix(-1, -1e9+1e0), true},
{"0.000000001", time.Unix(0, 1e0+0e0), true},
{"0.000001", time.Unix(0, 1e3+0e0), true},
{"0.001000", time.Unix(0, 1e6+0e0), true},
{"0", time.Unix(0, 0e0), true},
{"0.999000", time.Unix(0, 1e9-1e6), true},
{"0.999999", time.Unix(0, 1e9-1e3), true},
{"0.999999999", time.Unix(0, 1e9-1e0), true},
{"1.000000001", time.Unix(+1, +1e0-0e0), true},
{"1.000001", time.Unix(+1, +1e3-0e0), true},
{"1.001000", time.Unix(+1, +1e6-0e0), true},
{"1", time.Unix(+1, +0e0-0e0), true},
{"1.999000", time.Unix(+1, +1e9-1e6), true},
{"1.999999", time.Unix(+1, +1e9-1e3), true},
{"1.999999999", time.Unix(+1, +1e9-1e0), true},
{"-1350244992.023960108", time.Unix(-1350244992, -23960108), true},
{"-1350244992.02396010", time.Unix(-1350244992, -23960100), true},
{"-1350244992.0239601089", time.Unix(-1350244992, -23960108), true},
{"-1350244992.3", time.Unix(-1350244992, -300000000), true},
{"-1350244992", time.Unix(-1350244992, 0), true},
{"", time.Time{}, false},
{"0", time.Unix(0, 0), true},
{"1.", time.Unix(1, 0), true},
{"0.0", time.Unix(0, 0), true},
{".5", time.Time{}, false},
{"-1.3", time.Unix(-1, -3e8), true},
{"-1.0", time.Unix(-1, -0e0), true},
{"-0.0", time.Unix(-0, -0e0), true},
{"-0.1", time.Unix(-0, -1e8), true},
{"-0.01", time.Unix(-0, -1e7), true},
{"-0.99", time.Unix(-0, -99e7), true},
{"-0.98", time.Unix(-0, -98e7), true},
{"-1.1", time.Unix(-1, -1e8), true},
{"-1.01", time.Unix(-1, -1e7), true},
{"-2.99", time.Unix(-2, -99e7), true},
{"-5.98", time.Unix(-5, -98e7), true},
{"-", time.Time{}, false},
{"+", time.Time{}, false},
{"-1.-1", time.Time{}, false},
{"99999999999999999999999999999999999999999999999", time.Time{}, false},
{"0.123456789abcdef", time.Time{}, false},
{"foo", time.Time{}, false},
{"\x00", time.Time{}, false},
{"𝟵𝟴𝟳𝟲𝟱.𝟰𝟯𝟮𝟭𝟬", time.Time{}, false}, // Unicode numbers (U+1D7EC to U+1D7F5)
{"98765﹒43210", time.Time{}, false}, // Unicode period (U+FE52)
}
for _, v := range vectors {
ts, err := parsePAXTime(v.in)
ok := (err == nil)
if v.ok != ok {
if v.ok {
t.Errorf("parsePAXTime(%q): got parsing failure, want success", v.in)
} else {
t.Errorf("parsePAXTime(%q): got parsing success, want failure", v.in)
}
}
if ok && !ts.Equal(v.want) {
t.Errorf("parsePAXTime(%q): got (%ds %dns), want (%ds %dns)",
v.in, ts.Unix(), ts.Nanosecond(), v.want.Unix(), v.want.Nanosecond())
}
}
}
func TestParsePAXRecord(t *testing.T) {
medName := strings.Repeat("CD", 50)
longName := strings.Repeat("AB", 100)
vectors := []struct {
in string
wantRes string
wantKey string
wantVal string
ok bool
}{
{"6 k=v\n\n", "\n", "k", "v", true},
{"19 path=/etc/hosts\n", "", "path", "/etc/hosts", true},
{"210 path=" + longName + "\nabc", "abc", "path", longName, true},
{"110 path=" + medName + "\n", "", "path", medName, true},
{"9 foo=ba\n", "", "foo", "ba", true},
{"11 foo=bar\n\x00", "\x00", "foo", "bar", true},
{"18 foo=b=\nar=\n==\x00\n", "", "foo", "b=\nar=\n==\x00", true},
{"27 foo=hello9 foo=ba\nworld\n", "", "foo", "hello9 foo=ba\nworld", true},
{"27 ☺☻☹=日a本b語ç\nmeow mix", "meow mix", "☺☻☹", "日a本b語ç", true},
{"17 \x00hello=\x00world\n", "", "\x00hello", "\x00world", true},
{"1 k=1\n", "1 k=1\n", "", "", false},
{"6 k~1\n", "6 k~1\n", "", "", false},
{"6_k=1\n", "6_k=1\n", "", "", false},
{"6 k=1 ", "6 k=1 ", "", "", false},
{"632 k=1\n", "632 k=1\n", "", "", false},
{"16 longkeyname=hahaha\n", "16 longkeyname=hahaha\n", "", "", false},
{"3 somelongkey=\n", "3 somelongkey=\n", "", "", false},
{"50 tooshort=\n", "50 tooshort=\n", "", "", false},
}
for _, v := range vectors {
key, val, res, err := parsePAXRecord(v.in)
ok := (err == nil)
if ok != v.ok {
if v.ok {
t.Errorf("parsePAXRecord(%q): got parsing failure, want success", v.in)
} else {
t.Errorf("parsePAXRecord(%q): got parsing success, want failure", v.in)
}
}
if v.ok && (key != v.wantKey || val != v.wantVal) {
t.Errorf("parsePAXRecord(%q): got (%q: %q), want (%q: %q)",
v.in, key, val, v.wantKey, v.wantVal)
}
if res != v.wantRes {
t.Errorf("parsePAXRecord(%q): got residual %q, want residual %q",
v.in, res, v.wantRes)
}
}
}
func TestFormatPAXRecord(t *testing.T) {
medName := strings.Repeat("CD", 50)
longName := strings.Repeat("AB", 100)
vectors := []struct {
inKey string
inVal string
want string
}{
{"k", "v", "6 k=v\n"},
{"path", "/etc/hosts", "19 path=/etc/hosts\n"},
{"path", longName, "210 path=" + longName + "\n"},
{"path", medName, "110 path=" + medName + "\n"},
{"foo", "ba", "9 foo=ba\n"},
{"foo", "bar", "11 foo=bar\n"},
{"foo", "b=\nar=\n==\x00", "18 foo=b=\nar=\n==\x00\n"},
{"foo", "hello9 foo=ba\nworld", "27 foo=hello9 foo=ba\nworld\n"},
{"☺☻☹", "日a本b語ç", "27 ☺☻☹=日a本b語ç\n"},
{"\x00hello", "\x00world", "17 \x00hello=\x00world\n"},
}
for _, v := range vectors {
got := formatPAXRecord(v.inKey, v.inVal)
if got != v.want {
t.Errorf("formatPAXRecord(%q, %q): got %q, want %q",
v.inKey, v.inVal, got, v.want)
}
}
}