rclone/lib/encoder/encoder_test.go

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package encoder
import (
"fmt"
"regexp"
"strconv"
"strings"
"testing"
"github.com/spf13/pflag"
"github.com/stretchr/testify/assert"
)
// Check it satisfies the interfaces
var (
_ pflag.Value = (*MultiEncoder)(nil)
_ fmt.Scanner = (*MultiEncoder)(nil)
)
func TestEncodeString(t *testing.T) {
for _, test := range []struct {
mask MultiEncoder
want string
}{
{0, "None"},
{EncodeZero, "None"},
{EncodeDoubleQuote, "DoubleQuote"},
{EncodeDot, "Dot"},
{EncodeWin, "LtGt,DoubleQuote,Colon,Question,Asterisk,Pipe"},
{EncodeHashPercent, "Hash,Percent"},
{EncodeSlash | EncodeDollar | EncodeColon, "Slash,Dollar,Colon"},
{EncodeSlash | (1 << 31), "Slash,0x80000000"},
} {
got := test.mask.String()
assert.Equal(t, test.want, got)
}
}
func TestEncodeSet(t *testing.T) {
for _, test := range []struct {
in string
want MultiEncoder
wantErr bool
}{
{"", 0, true},
{"None", 0, false},
{"None", EncodeZero, false},
{"DoubleQuote", EncodeDoubleQuote, false},
{"Dot", EncodeDot, false},
{"LtGt,DoubleQuote,Colon,Question,Asterisk,Pipe", EncodeWin, false},
{"Hash,Percent", EncodeHashPercent, false},
{"Slash,Dollar,Colon", EncodeSlash | EncodeDollar | EncodeColon, false},
{"Slash,0x80000000", EncodeSlash | (1 << 31), false},
{"Blerp", 0, true},
{"0xFGFFF", 0, true},
} {
var got MultiEncoder
err := got.Set(test.in)
assert.Equal(t, test.wantErr, err != nil, err)
assert.Equal(t, test.want, got, test.in)
}
}
type testCase struct {
mask MultiEncoder
in string
out string
}
func TestEncodeSingleMask(t *testing.T) {
for i, tc := range testCasesSingle {
e := tc.mask
t.Run(strconv.FormatInt(int64(i), 10), func(t *testing.T) {
got := e.Encode(tc.in)
if got != tc.out {
t.Errorf("Encode(%q) want %q got %q", tc.in, tc.out, got)
}
got2 := e.Decode(got)
if got2 != tc.in {
t.Errorf("Decode(%q) want %q got %q", got, tc.in, got2)
}
})
}
}
func TestEncodeSingleMaskEdge(t *testing.T) {
for i, tc := range testCasesSingleEdge {
e := tc.mask
t.Run(strconv.FormatInt(int64(i), 10), func(t *testing.T) {
got := e.Encode(tc.in)
if got != tc.out {
t.Errorf("Encode(%q) want %q got %q", tc.in, tc.out, got)
}
got2 := e.Decode(got)
if got2 != tc.in {
t.Errorf("Decode(%q) want %q got %q", got, tc.in, got2)
}
})
}
}
func TestEncodeDoubleMaskEdge(t *testing.T) {
for i, tc := range testCasesDoubleEdge {
e := tc.mask
t.Run(strconv.FormatInt(int64(i), 10), func(t *testing.T) {
got := e.Encode(tc.in)
if got != tc.out {
t.Errorf("Encode(%q) want %q got %q", tc.in, tc.out, got)
}
got2 := e.Decode(got)
if got2 != tc.in {
t.Errorf("Decode(%q) want %q got %q", got, tc.in, got2)
}
})
}
}
func TestEncodeInvalidUnicode(t *testing.T) {
for i, tc := range []testCase{
{
mask: EncodeInvalidUtf8,
in: "\xBF",
out: "BF",
}, {
mask: EncodeInvalidUtf8,
in: "\xBF\xFE",
out: "BFFE",
}, {
mask: EncodeInvalidUtf8,
in: "a\xBF\xFEb",
out: "aBFFEb",
}, {
mask: EncodeInvalidUtf8,
in: "a\xBFξ\xFEb",
out: "aBFξFEb",
}, {
mask: EncodeInvalidUtf8 | EncodeBackSlash,
in: "a\xBF\\\xFEb",
out: "aBFFEb",
}, {
mask: 0,
in: "\xBF",
out: "\xBF",
}, {
mask: 0,
in: "\xBF\xFE",
out: "\xBF\xFE",
}, {
mask: 0,
in: "a\xBF\xFEb",
out: "a\xBF\xFEb",
}, {
mask: 0,
in: "a\xBFξ\xFEb",
out: "a\xBFξ\xFEb",
}, {
mask: EncodeBackSlash,
in: "a\xBF\\\xFEb",
out: "a\xBF\xFEb",
},
} {
e := tc.mask
t.Run(strconv.FormatInt(int64(i), 10), func(t *testing.T) {
got := e.Encode(tc.in)
if got != tc.out {
t.Errorf("Encode(%q) want %q got %q", tc.in, tc.out, got)
}
got2 := e.Decode(got)
if got2 != tc.in {
t.Errorf("Decode(%q) want %q got %q", got, tc.in, got2)
}
})
}
}
func TestEncodeDot(t *testing.T) {
for i, tc := range []testCase{
{
mask: 0,
in: ".",
out: ".",
}, {
mask: EncodeDot,
in: ".",
out: "",
}, {
mask: 0,
in: "..",
out: "..",
}, {
mask: EncodeDot,
in: "..",
out: "",
}, {
mask: EncodeDot,
in: "...",
out: "...",
}, {
mask: EncodeDot,
in: ". .",
out: ". .",
},
} {
e := tc.mask
t.Run(strconv.FormatInt(int64(i), 10), func(t *testing.T) {
got := e.Encode(tc.in)
if got != tc.out {
t.Errorf("Encode(%q) want %q got %q", tc.in, tc.out, got)
}
got2 := e.Decode(got)
if got2 != tc.in {
t.Errorf("Decode(%q) want %q got %q", got, tc.in, got2)
}
})
}
}
func TestDecodeHalf(t *testing.T) {
for i, tc := range []testCase{
{
mask: 0,
in: "",
out: "",
}, {
mask: 0,
in: "",
out: "",
}, {
mask: 0,
in: "a",
out: "a",
}, {
mask: EncodeInvalidUtf8,
in: "aBEg",
out: "aBEg",
}, {
mask: EncodeInvalidUtf8,
in: "aBEg",
out: "aBEg",
}, {
mask: EncodeInvalidUtf8 | EncodeBackSlash,
in: "aBEg",
out: "aB\\Eg",
},
} {
e := tc.mask
t.Run(strconv.FormatInt(int64(i), 10), func(t *testing.T) {
got := e.Decode(tc.in)
if got != tc.out {
t.Errorf("Decode(%q) want %q got %q", tc.in, tc.out, got)
}
})
}
}
const oneDrive = (Standard |
EncodeWin |
EncodeBackSlash |
EncodeHashPercent |
EncodeDel |
EncodeCtl |
EncodeLeftTilde |
EncodeRightSpace |
EncodeRightPeriod)
var benchTests = []struct {
in string
outOld string
outNew string
}{
{
"",
"",
"",
},
{
"abc 123",
"abc 123",
"abc 123",
},
{
`\*<>?:|#%".~`,
`.~`,
`.~`,
},
{
`\*<>?:|#%".~/\*<>?:|#%".~`,
`.~/.~`,
`.~.~`,
},
{
" leading space",
" leading space",
" leading space",
},
{
"~leading tilde",
"leading tilde",
"leading tilde",
},
{
"trailing dot.",
"trailing dot",
"trailing dot",
},
{
" leading space/ leading space/ leading space",
" leading space/ leading space/ leading space",
" leading space leading space leading space",
},
{
"~leading tilde/~leading tilde/~leading tilde",
"leading tilde/leading tilde/leading tilde",
"leading tilde~leading tilde~leading tilde",
},
{
"leading tilde/~leading tilde",
"leading tilde/leading tilde",
"leading tilde~leading tilde",
},
{
"trailing dot./trailing dot./trailing dot.",
"trailing dot/trailing dot/trailing dot",
"trailing dot.trailing dot.trailing dot",
},
}
func benchReplace(b *testing.B, f func(string) string, old bool) {
for range make([]struct{}, b.N) {
for _, test := range benchTests {
got := f(test.in)
out := test.outNew
if old {
out = test.outOld
}
if got != out {
b.Errorf("Encode(%q) want %q got %q", test.in, out, got)
}
}
}
}
func benchRestore(b *testing.B, f func(string) string, old bool) {
for range make([]struct{}, b.N) {
for _, test := range benchTests {
out := test.outNew
if old {
out = test.outOld
}
got := f(out)
if got != test.in {
b.Errorf("Decode(%q) want %q got %q", out, test.in, got)
}
}
}
}
func BenchmarkOneDriveReplaceNew(b *testing.B) {
benchReplace(b, oneDrive.Encode, false)
}
func BenchmarkOneDriveReplaceOld(b *testing.B) {
benchReplace(b, replaceReservedChars, true)
}
func BenchmarkOneDriveRestoreNew(b *testing.B) {
benchRestore(b, oneDrive.Decode, false)
}
func BenchmarkOneDriveRestoreOld(b *testing.B) {
benchRestore(b, restoreReservedChars, true)
}
var (
charMap = map[rune]rune{
'\\': '', // FULLWIDTH REVERSE SOLIDUS
'*': '', // FULLWIDTH ASTERISK
'<': '', // FULLWIDTH LESS-THAN SIGN
'>': '', // FULLWIDTH GREATER-THAN SIGN
'?': '', // FULLWIDTH QUESTION MARK
':': '', // FULLWIDTH COLON
'|': '', // FULLWIDTH VERTICAL LINE
'#': '', // FULLWIDTH NUMBER SIGN
'%': '', // FULLWIDTH PERCENT SIGN
'"': '', // FULLWIDTH QUOTATION MARK - not on the list but seems to be reserved
'.': '', // FULLWIDTH FULL STOP
'~': '', // FULLWIDTH TILDE
' ': '␠', // SYMBOL FOR SPACE
}
invCharMap map[rune]rune
fixEndingInPeriod = regexp.MustCompile(`\.(/|$)`)
fixEndingWithSpace = regexp.MustCompile(` (/|$)`)
fixStartingWithTilde = regexp.MustCompile(`(/|^)~`)
)
func init() {
// Create inverse charMap
invCharMap = make(map[rune]rune, len(charMap))
for k, v := range charMap {
invCharMap[v] = k
}
}
// replaceReservedChars takes a path and substitutes any reserved
// characters in it
func replaceReservedChars(in string) string {
// Folder names can't end with a period '.'
in = fixEndingInPeriod.ReplaceAllString(in, string(charMap['.'])+"$1")
// OneDrive for Business file or folder names cannot begin with a tilde '~'
in = fixStartingWithTilde.ReplaceAllString(in, "$1"+string(charMap['~']))
// Apparently file names can't start with space either
in = fixEndingWithSpace.ReplaceAllString(in, string(charMap[' '])+"$1")
// Encode reserved characters
return strings.Map(func(c rune) rune {
if replacement, ok := charMap[c]; ok && c != '.' && c != '~' && c != ' ' {
return replacement
}
return c
}, in)
}
// restoreReservedChars takes a path and undoes any substitutions
// made by replaceReservedChars
func restoreReservedChars(in string) string {
return strings.Map(func(c rune) rune {
if replacement, ok := invCharMap[c]; ok {
return replacement
}
return c
}, in)
}