--- /dev/null
+// Copyright 2013 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 language
+
+import (
+ "bytes"
+ "strings"
+ "testing"
+
+ "golang.org/x/text/internal/tag"
+)
+
+type scanTest struct {
+ ok bool // true if scanning does not result in an error
+ in string
+ tok []string // the expected tokens
+}
+
+var tests = []scanTest{
+ {true, "", []string{}},
+ {true, "1", []string{"1"}},
+ {true, "en", []string{"en"}},
+ {true, "root", []string{"root"}},
+ {true, "maxchars", []string{"maxchars"}},
+ {false, "bad/", []string{}},
+ {false, "morethan8", []string{}},
+ {false, "-", []string{}},
+ {false, "----", []string{}},
+ {false, "_", []string{}},
+ {true, "en-US", []string{"en", "US"}},
+ {true, "en_US", []string{"en", "US"}},
+ {false, "en-US-", []string{"en", "US"}},
+ {false, "en-US--", []string{"en", "US"}},
+ {false, "en-US---", []string{"en", "US"}},
+ {false, "en--US", []string{"en", "US"}},
+ {false, "-en-US", []string{"en", "US"}},
+ {false, "-en--US-", []string{"en", "US"}},
+ {false, "-en--US-", []string{"en", "US"}},
+ {false, "en-.-US", []string{"en", "US"}},
+ {false, ".-en--US-.", []string{"en", "US"}},
+ {false, "en-u.-US", []string{"en", "US"}},
+ {true, "en-u1-US", []string{"en", "u1", "US"}},
+ {true, "maxchar1_maxchar2-maxchar3", []string{"maxchar1", "maxchar2", "maxchar3"}},
+ {false, "moreThan8-moreThan8-e", []string{"e"}},
+}
+
+func TestScan(t *testing.T) {
+ for i, tt := range tests {
+ scan := makeScannerString(tt.in)
+ for j := 0; !scan.done; j++ {
+ if j >= len(tt.tok) {
+ t.Errorf("%d: extra token %q", i, scan.token)
+ } else if tag.Compare(tt.tok[j], scan.token) != 0 {
+ t.Errorf("%d: token %d: found %q; want %q", i, j, scan.token, tt.tok[j])
+ break
+ }
+ scan.scan()
+ }
+ if s := strings.Join(tt.tok, "-"); tag.Compare(s, bytes.Replace(scan.b, b("_"), b("-"), -1)) != 0 {
+ t.Errorf("%d: input: found %q; want %q", i, scan.b, s)
+ }
+ if (scan.err == nil) != tt.ok {
+ t.Errorf("%d: ok: found %v; want %v", i, scan.err == nil, tt.ok)
+ }
+ }
+}
+
+func TestAcceptMinSize(t *testing.T) {
+ for i, tt := range tests {
+ // count number of successive tokens with a minimum size.
+ for sz := 1; sz <= 8; sz++ {
+ scan := makeScannerString(tt.in)
+ scan.end, scan.next = 0, 0
+ end := scan.acceptMinSize(sz)
+ n := 0
+ for i := 0; i < len(tt.tok) && len(tt.tok[i]) >= sz; i++ {
+ n += len(tt.tok[i])
+ if i > 0 {
+ n++
+ }
+ }
+ if end != n {
+ t.Errorf("%d:%d: found len %d; want %d", i, sz, end, n)
+ }
+ }
+ }
+}
+
+type parseTest struct {
+ i int // the index of this test
+ in string
+ lang, script, region string
+ variants, ext string
+ extList []string // only used when more than one extension is present
+ invalid bool
+ rewrite bool // special rewrite not handled by parseTag
+ changed bool // string needed to be reformatted
+}
+
+func parseTests() []parseTest {
+ tests := []parseTest{
+ {in: "root", lang: "und"},
+ {in: "und", lang: "und"},
+ {in: "en", lang: "en"},
+ {in: "xy", lang: "und", invalid: true},
+ {in: "en-ZY", lang: "en", invalid: true},
+ {in: "gsw", lang: "gsw"},
+ {in: "sr_Latn", lang: "sr", script: "Latn"},
+ {in: "af-Arab", lang: "af", script: "Arab"},
+ {in: "nl-BE", lang: "nl", region: "BE"},
+ {in: "es-419", lang: "es", region: "419"},
+ {in: "und-001", lang: "und", region: "001"},
+ {in: "de-latn-be", lang: "de", script: "Latn", region: "BE"},
+ // Variants
+ {in: "de-1901", lang: "de", variants: "1901"},
+ // Accept with unsuppressed script.
+ {in: "de-Latn-1901", lang: "de", script: "Latn", variants: "1901"},
+ // Specialized.
+ {in: "sl-rozaj", lang: "sl", variants: "rozaj"},
+ {in: "sl-rozaj-lipaw", lang: "sl", variants: "rozaj-lipaw"},
+ {in: "sl-rozaj-biske", lang: "sl", variants: "rozaj-biske"},
+ {in: "sl-rozaj-biske-1994", lang: "sl", variants: "rozaj-biske-1994"},
+ {in: "sl-rozaj-1994", lang: "sl", variants: "rozaj-1994"},
+ // Maximum number of variants while adhering to prefix rules.
+ {in: "sl-rozaj-biske-1994-alalc97-fonipa-fonupa-fonxsamp", lang: "sl", variants: "rozaj-biske-1994-alalc97-fonipa-fonupa-fonxsamp"},
+
+ // Sorting.
+ {in: "sl-1994-biske-rozaj", lang: "sl", variants: "rozaj-biske-1994", changed: true},
+ {in: "sl-rozaj-biske-1994-alalc97-fonupa-fonipa-fonxsamp", lang: "sl", variants: "rozaj-biske-1994-alalc97-fonipa-fonupa-fonxsamp", changed: true},
+ {in: "nl-fonxsamp-alalc97-fonipa-fonupa", lang: "nl", variants: "alalc97-fonipa-fonupa-fonxsamp", changed: true},
+
+ // Duplicates variants are removed, but not an error.
+ {in: "nl-fonupa-fonupa", lang: "nl", variants: "fonupa"},
+
+ // Variants that do not have correct prefixes. We still accept these.
+ {in: "de-Cyrl-1901", lang: "de", script: "Cyrl", variants: "1901"},
+ {in: "sl-rozaj-lipaw-1994", lang: "sl", variants: "rozaj-lipaw-1994"},
+ {in: "sl-1994-biske-rozaj-1994-biske-rozaj", lang: "sl", variants: "rozaj-biske-1994", changed: true},
+ {in: "de-Cyrl-1901", lang: "de", script: "Cyrl", variants: "1901"},
+
+ // Invalid variant.
+ {in: "de-1902", lang: "de", variants: "", invalid: true},
+
+ {in: "EN_CYRL", lang: "en", script: "Cyrl"},
+ // private use and extensions
+ {in: "x-a-b-c-d", ext: "x-a-b-c-d"},
+ {in: "x_A.-B-C_D", ext: "x-b-c-d", invalid: true, changed: true},
+ {in: "x-aa-bbbb-cccccccc-d", ext: "x-aa-bbbb-cccccccc-d"},
+ {in: "en-c_cc-b-bbb-a-aaa", lang: "en", changed: true, extList: []string{"a-aaa", "b-bbb", "c-cc"}},
+ {in: "en-x_cc-b-bbb-a-aaa", lang: "en", ext: "x-cc-b-bbb-a-aaa", changed: true},
+ {in: "en-c_cc-b-bbb-a-aaa-x-x", lang: "en", changed: true, extList: []string{"a-aaa", "b-bbb", "c-cc", "x-x"}},
+ {in: "en-v-c", lang: "en", ext: "", invalid: true},
+ {in: "en-v-abcdefghi", lang: "en", ext: "", invalid: true},
+ {in: "en-v-abc-x", lang: "en", ext: "v-abc", invalid: true},
+ {in: "en-v-abc-x-", lang: "en", ext: "v-abc", invalid: true},
+ {in: "en-v-abc-w-x-xx", lang: "en", extList: []string{"v-abc", "x-xx"}, invalid: true, changed: true},
+ {in: "en-v-abc-w-y-yx", lang: "en", extList: []string{"v-abc", "y-yx"}, invalid: true, changed: true},
+ {in: "en-v-c-abc", lang: "en", ext: "c-abc", invalid: true, changed: true},
+ {in: "en-v-w-abc", lang: "en", ext: "w-abc", invalid: true, changed: true},
+ {in: "en-v-x-abc", lang: "en", ext: "x-abc", invalid: true, changed: true},
+ {in: "en-v-x-a", lang: "en", ext: "x-a", invalid: true, changed: true},
+ {in: "en-9-aa-0-aa-z-bb-x-a", lang: "en", extList: []string{"0-aa", "9-aa", "z-bb", "x-a"}, changed: true},
+ {in: "en-u-c", lang: "en", ext: "", invalid: true},
+ {in: "en-u-co-phonebk", lang: "en", ext: "u-co-phonebk"},
+ {in: "en-u-co-phonebk-ca", lang: "en", ext: "u-co-phonebk", invalid: true},
+ {in: "en-u-nu-arabic-co-phonebk-ca", lang: "en", ext: "u-co-phonebk-nu-arabic", invalid: true, changed: true},
+ {in: "en-u-nu-arabic-co-phonebk-ca-x", lang: "en", ext: "u-co-phonebk-nu-arabic", invalid: true, changed: true},
+ {in: "en-u-nu-arabic-co-phonebk-ca-s", lang: "en", ext: "u-co-phonebk-nu-arabic", invalid: true, changed: true},
+ {in: "en-u-nu-arabic-co-phonebk-ca-a12345678", lang: "en", ext: "u-co-phonebk-nu-arabic", invalid: true, changed: true},
+ {in: "en-u-co-phonebook", lang: "en", ext: "", invalid: true},
+ {in: "en-u-co-phonebook-cu-xau", lang: "en", ext: "u-cu-xau", invalid: true, changed: true},
+ {in: "en-Cyrl-u-co-phonebk", lang: "en", script: "Cyrl", ext: "u-co-phonebk"},
+ {in: "en-US-u-co-phonebk", lang: "en", region: "US", ext: "u-co-phonebk"},
+ {in: "en-US-u-co-phonebk-cu-xau", lang: "en", region: "US", ext: "u-co-phonebk-cu-xau"},
+ {in: "en-scotland-u-co-phonebk", lang: "en", variants: "scotland", ext: "u-co-phonebk"},
+ {in: "en-u-cu-xua-co-phonebk", lang: "en", ext: "u-co-phonebk-cu-xua", changed: true},
+ {in: "en-u-def-abc-cu-xua-co-phonebk", lang: "en", ext: "u-abc-def-co-phonebk-cu-xua", changed: true},
+ {in: "en-u-def-abc", lang: "en", ext: "u-abc-def", changed: true},
+ {in: "en-u-cu-xua-co-phonebk-a-cd", lang: "en", extList: []string{"a-cd", "u-co-phonebk-cu-xua"}, changed: true},
+ // Invalid "u" extension. Drop invalid parts.
+ {in: "en-u-cu-co-phonebk", lang: "en", extList: []string{"u-co-phonebk"}, invalid: true, changed: true},
+ {in: "en-u-cu-xau-co", lang: "en", extList: []string{"u-cu-xau"}, invalid: true},
+ // We allow duplicate keys as the LDML spec does not explicitly prohibit it.
+ // TODO: Consider eliminating duplicates and returning an error.
+ {in: "en-u-cu-xau-co-phonebk-cu-xau", lang: "en", ext: "u-co-phonebk-cu-xau-cu-xau", changed: true},
+ {in: "en-t-en-Cyrl-NL-fonipa", lang: "en", ext: "t-en-cyrl-nl-fonipa", changed: true},
+ {in: "en-t-en-Cyrl-NL-fonipa-t0-abc-def", lang: "en", ext: "t-en-cyrl-nl-fonipa-t0-abc-def", changed: true},
+ {in: "en-t-t0-abcd", lang: "en", ext: "t-t0-abcd"},
+ // Not necessary to have changed here.
+ {in: "en-t-nl-abcd", lang: "en", ext: "t-nl", invalid: true},
+ {in: "en-t-nl-latn", lang: "en", ext: "t-nl-latn"},
+ {in: "en-t-t0-abcd-x-a", lang: "en", extList: []string{"t-t0-abcd", "x-a"}},
+ // invalid
+ {in: "", lang: "und", invalid: true},
+ {in: "-", lang: "und", invalid: true},
+ {in: "x", lang: "und", invalid: true},
+ {in: "x-", lang: "und", invalid: true},
+ {in: "x--", lang: "und", invalid: true},
+ {in: "a-a-b-c-d", lang: "und", invalid: true},
+ {in: "en-", lang: "en", invalid: true},
+ {in: "enne-", lang: "und", invalid: true},
+ {in: "en.", lang: "und", invalid: true},
+ {in: "en.-latn", lang: "und", invalid: true},
+ {in: "en.-en", lang: "en", invalid: true},
+ {in: "x-a-tooManyChars-c-d", ext: "x-a-c-d", invalid: true, changed: true},
+ {in: "a-tooManyChars-c-d", lang: "und", invalid: true},
+ // TODO: check key-value validity
+ // { in: "en-u-cu-xd", lang: "en", ext: "u-cu-xd", invalid: true },
+ {in: "en-t-abcd", lang: "en", invalid: true},
+ {in: "en-Latn-US-en", lang: "en", script: "Latn", region: "US", invalid: true},
+ // rewrites (more tests in TestGrandfathered)
+ {in: "zh-min-nan", lang: "nan"},
+ {in: "zh-yue", lang: "yue"},
+ {in: "zh-xiang", lang: "hsn", rewrite: true},
+ {in: "zh-guoyu", lang: "cmn", rewrite: true},
+ {in: "iw", lang: "iw"},
+ {in: "sgn-BE-FR", lang: "sfb", rewrite: true},
+ {in: "i-klingon", lang: "tlh", rewrite: true},
+ }
+ for i, tt := range tests {
+ tests[i].i = i
+ if tt.extList != nil {
+ tests[i].ext = strings.Join(tt.extList, "-")
+ }
+ if tt.ext != "" && tt.extList == nil {
+ tests[i].extList = []string{tt.ext}
+ }
+ }
+ return tests
+}
+
+func TestParseExtensions(t *testing.T) {
+ for i, tt := range parseTests() {
+ if tt.ext == "" || tt.rewrite {
+ continue
+ }
+ scan := makeScannerString(tt.in)
+ if len(scan.b) > 1 && scan.b[1] != '-' {
+ scan.end = nextExtension(string(scan.b), 0)
+ scan.next = scan.end + 1
+ scan.scan()
+ }
+ start := scan.start
+ scan.toLower(start, len(scan.b))
+ parseExtensions(&scan)
+ ext := string(scan.b[start:])
+ if ext != tt.ext {
+ t.Errorf("%d(%s): ext was %v; want %v", i, tt.in, ext, tt.ext)
+ }
+ if changed := !strings.HasPrefix(tt.in[start:], ext); changed != tt.changed {
+ t.Errorf("%d(%s): changed was %v; want %v", i, tt.in, changed, tt.changed)
+ }
+ }
+}
+
+// partChecks runs checks for each part by calling the function returned by f.
+func partChecks(t *testing.T, f func(*parseTest) (Tag, bool)) {
+ for i, tt := range parseTests() {
+ tag, skip := f(&tt)
+ if skip {
+ continue
+ }
+ if l, _ := getLangID(b(tt.lang)); l != tag.lang {
+ t.Errorf("%d: lang was %q; want %q", i, tag.lang, l)
+ }
+ if sc, _ := getScriptID(script, b(tt.script)); sc != tag.script {
+ t.Errorf("%d: script was %q; want %q", i, tag.script, sc)
+ }
+ if r, _ := getRegionID(b(tt.region)); r != tag.region {
+ t.Errorf("%d: region was %q; want %q", i, tag.region, r)
+ }
+ if tag.str == "" {
+ continue
+ }
+ p := int(tag.pVariant)
+ if p < int(tag.pExt) {
+ p++
+ }
+ if s, g := tag.str[p:tag.pExt], tt.variants; s != g {
+ t.Errorf("%d: variants was %q; want %q", i, s, g)
+ }
+ p = int(tag.pExt)
+ if p > 0 && p < len(tag.str) {
+ p++
+ }
+ if s, g := (tag.str)[p:], tt.ext; s != g {
+ t.Errorf("%d: extensions were %q; want %q", i, s, g)
+ }
+ }
+}
+
+func TestParseTag(t *testing.T) {
+ partChecks(t, func(tt *parseTest) (id Tag, skip bool) {
+ if strings.HasPrefix(tt.in, "x-") || tt.rewrite {
+ return Tag{}, true
+ }
+ scan := makeScannerString(tt.in)
+ id, end := parseTag(&scan)
+ id.str = string(scan.b[:end])
+ tt.ext = ""
+ tt.extList = []string{}
+ return id, false
+ })
+}
+
+func TestParse(t *testing.T) {
+ partChecks(t, func(tt *parseTest) (id Tag, skip bool) {
+ id, err := Raw.Parse(tt.in)
+ ext := ""
+ if id.str != "" {
+ if strings.HasPrefix(id.str, "x-") {
+ ext = id.str
+ } else if int(id.pExt) < len(id.str) && id.pExt > 0 {
+ ext = id.str[id.pExt+1:]
+ }
+ }
+ if tag, _ := Raw.Parse(id.String()); tag.String() != id.String() {
+ t.Errorf("%d:%s: reparse was %q; want %q", tt.i, tt.in, id.String(), tag.String())
+ }
+ if ext != tt.ext {
+ t.Errorf("%d:%s: ext was %q; want %q", tt.i, tt.in, ext, tt.ext)
+ }
+ changed := id.str != "" && !strings.HasPrefix(tt.in, id.str)
+ if changed != tt.changed {
+ t.Errorf("%d:%s: changed was %v; want %v", tt.i, tt.in, changed, tt.changed)
+ }
+ if (err != nil) != tt.invalid {
+ t.Errorf("%d:%s: invalid was %v; want %v. Error: %v", tt.i, tt.in, err != nil, tt.invalid, err)
+ }
+ return id, false
+ })
+}
+
+func TestErrors(t *testing.T) {
+ mkInvalid := func(s string) error {
+ return mkErrInvalid([]byte(s))
+ }
+ tests := []struct {
+ in string
+ out error
+ }{
+ // invalid subtags.
+ {"ac", mkInvalid("ac")},
+ {"AC", mkInvalid("ac")},
+ {"aa-Uuuu", mkInvalid("Uuuu")},
+ {"aa-AB", mkInvalid("AB")},
+ // ill-formed wins over invalid.
+ {"ac-u", errSyntax},
+ {"ac-u-ca", errSyntax},
+ {"ac-u-ca-co-pinyin", errSyntax},
+ {"noob", errSyntax},
+ }
+ for _, tt := range tests {
+ _, err := Parse(tt.in)
+ if err != tt.out {
+ t.Errorf("%s: was %q; want %q", tt.in, err, tt.out)
+ }
+ }
+}
+
+func TestCompose1(t *testing.T) {
+ partChecks(t, func(tt *parseTest) (id Tag, skip bool) {
+ l, _ := ParseBase(tt.lang)
+ s, _ := ParseScript(tt.script)
+ r, _ := ParseRegion(tt.region)
+ v := []Variant{}
+ for _, x := range strings.Split(tt.variants, "-") {
+ p, _ := ParseVariant(x)
+ v = append(v, p)
+ }
+ e := []Extension{}
+ for _, x := range tt.extList {
+ p, _ := ParseExtension(x)
+ e = append(e, p)
+ }
+ id, _ = Raw.Compose(l, s, r, v, e)
+ return id, false
+ })
+}
+
+func TestCompose2(t *testing.T) {
+ partChecks(t, func(tt *parseTest) (id Tag, skip bool) {
+ l, _ := ParseBase(tt.lang)
+ s, _ := ParseScript(tt.script)
+ r, _ := ParseRegion(tt.region)
+ p := []interface{}{l, s, r, s, r, l}
+ for _, x := range strings.Split(tt.variants, "-") {
+ v, _ := ParseVariant(x)
+ p = append(p, v)
+ }
+ for _, x := range tt.extList {
+ e, _ := ParseExtension(x)
+ p = append(p, e)
+ }
+ id, _ = Raw.Compose(p...)
+ return id, false
+ })
+}
+
+func TestCompose3(t *testing.T) {
+ partChecks(t, func(tt *parseTest) (id Tag, skip bool) {
+ id, _ = Raw.Parse(tt.in)
+ id, _ = Raw.Compose(id)
+ return id, false
+ })
+}
+
+func mk(s string) Tag {
+ return Raw.Make(s)
+}
+
+func TestParseAcceptLanguage(t *testing.T) {
+ type res struct {
+ t Tag
+ q float32
+ }
+ en := []res{{mk("en"), 1.0}}
+ tests := []struct {
+ out []res
+ in string
+ ok bool
+ }{
+ {en, "en", true},
+ {en, " en", true},
+ {en, "en ", true},
+ {en, " en ", true},
+ {en, "en,", true},
+ {en, ",en", true},
+ {en, ",,,en,,,", true},
+ {en, ",en;q=1", true},
+
+ // We allow an empty input, contrary to spec.
+ {nil, "", true},
+ {[]res{{mk("aa"), 1}}, "aa;", true}, // allow unspecified weight
+
+ // errors
+ {nil, ";", false},
+ {nil, "$", false},
+ {nil, "e;", false},
+ {nil, "x;", false},
+ {nil, "x", false},
+ {nil, "ac", false}, // non-existing language
+ {nil, "aa;q", false},
+ {nil, "aa;q=", false},
+ {nil, "aa;q=.", false},
+
+ // odd fallbacks
+ {
+ []res{{mk("en"), 0.1}},
+ " english ;q=.1",
+ true,
+ },
+ {
+ []res{{mk("it"), 1.0}, {mk("de"), 1.0}, {mk("fr"), 1.0}},
+ " italian, deutsch, french",
+ true,
+ },
+
+ // lists
+ {
+ []res{{mk("en"), 0.1}},
+ "en;q=.1",
+ true,
+ },
+ {
+ []res{{mk("mul"), 1.0}},
+ "*",
+ true,
+ },
+ {
+ []res{{mk("en"), 1.0}, {mk("de"), 1.0}},
+ "en,de",
+ true,
+ },
+ {
+ []res{{mk("en"), 1.0}, {mk("de"), .5}},
+ "en,de;q=0.5",
+ true,
+ },
+ {
+ []res{{mk("de"), 0.8}, {mk("en"), 0.5}},
+ " en ; q = 0.5 , , de;q=0.8",
+ true,
+ },
+ {
+ []res{{mk("en"), 1.0}, {mk("de"), 1.0}, {mk("fr"), 1.0}, {mk("tlh"), 1.0}},
+ "en,de,fr,i-klingon",
+ true,
+ },
+ // sorting
+ {
+ []res{{mk("tlh"), 0.4}, {mk("de"), 0.2}, {mk("fr"), 0.2}, {mk("en"), 0.1}},
+ "en;q=0.1,de;q=0.2,fr;q=0.2,i-klingon;q=0.4",
+ true,
+ },
+ // dropping
+ {
+ []res{{mk("fr"), 0.2}, {mk("en"), 0.1}},
+ "en;q=0.1,de;q=0,fr;q=0.2,i-klingon;q=0.0",
+ true,
+ },
+ }
+ for i, tt := range tests {
+ tags, qs, e := ParseAcceptLanguage(tt.in)
+ if e == nil != tt.ok {
+ t.Errorf("%d:%s:err: was %v; want %v", i, tt.in, e == nil, tt.ok)
+ }
+ for j, tag := range tags {
+ if out := tt.out[j]; !tag.equalTags(out.t) || qs[j] != out.q {
+ t.Errorf("%d:%s: was %s, %1f; want %s, %1f", i, tt.in, tag, qs[j], out.t, out.q)
+ break
+ }
+ }
+ }
+}
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