| // 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 ( |
| "strings" |
| "testing" |
| |
| "golang.org/x/text/internal/language" |
| ) |
| |
| // equalTags compares language, script and region subtags only. |
| func (t Tag) equalTags(a Tag) bool { |
| return t.lang() == a.lang() && |
| t.script() == a.script() && |
| t.region() == a.region() |
| } |
| |
| var errSyntax = language.ErrSyntax |
| |
| 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: "en-US-u-va-posix", lang: "en", region: "US", ext: "u-va-posix"}, |
| {in: "ca-ES-valencia", lang: "ca", region: "ES", variants: "valencia"}, |
| {in: "en-US-u-rg-gbzzzz", lang: "en", region: "US", ext: "u-rg-gbzzzz"}, |
| |
| {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-ca-co-phonebk", invalid: true}, |
| {in: "en-u-nu-arabic-co-phonebk-ca", lang: "en", ext: "u-ca-co-phonebk-nu-arabic", invalid: true, changed: true}, |
| {in: "en-u-nu-arabic-co-phonebk-ca-x", lang: "en", ext: "u-ca-co-phonebk-nu-arabic", invalid: true, changed: true}, |
| {in: "en-u-nu-arabic-co-phonebk-ca-s", lang: "en", ext: "u-ca-co-phonebk-nu-arabic", invalid: true, changed: true}, |
| {in: "en-u-nu-arabic-co-phonebk-ca-a12345678", lang: "en", ext: "u-ca-co-phonebk-nu-arabic", invalid: true, changed: true}, |
| {in: "en-u-co-phonebook", lang: "en", ext: "u-co", invalid: true}, |
| {in: "en-u-co-phonebook-cu-xau", lang: "en", ext: "u-co-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-cu"}, invalid: true, changed: true}, |
| {in: "en-u-cu-xau-co", lang: "en", extList: []string{"u-co-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", 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"}}, |
| {in: "en_t_pt_MLt", lang: "en", ext: "t-pt-mlt", changed: true}, |
| {in: "en-t-fr-est", lang: "en", ext: "t-fr-est", changed: false}, |
| {in: "fr-est", lang: "et", changed: true}, |
| {in: "fr-est-t-fr-est", lang: "et", ext: "t-fr-est", changed: true}, |
| {in: "fr-est-Cyrl", lang: "et", script: "Cyrl", changed: true}, |
| // 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 |
| } |
| |
| // 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, _ := language.ParseBase(tt.lang); l != tag.lang() { |
| t.Errorf("%d: lang was %q; want %q", i, tag.lang(), l) |
| } |
| if sc, _ := language.ParseScript(tt.script); sc != tag.script() { |
| t.Errorf("%d: script was %q; want %q", i, tag.script(), sc) |
| } |
| if r, _ := language.ParseRegion(tt.region); r != tag.region() { |
| t.Errorf("%d: region was %q; want %q", i, tag.region(), r) |
| } |
| v := tag.tag().Variants() |
| if v != "" { |
| v = v[1:] |
| } |
| if v != tt.variants { |
| t.Errorf("%d: variants was %q; want %q", i, v, tt.variants) |
| } |
| if e := strings.Join(tag.tag().Extensions(), "-"); e != tt.ext { |
| t.Errorf("%d: extensions were %q; want %q", i, e, tt.ext) |
| } |
| } |
| } |
| |
| func TestParse(t *testing.T) { |
| partChecks(t, func(tt *parseTest) (id Tag, skip bool) { |
| id, _ = Raw.Parse(tt.in) |
| return id, false |
| }) |
| } |
| |
| func TestErrors(t *testing.T) { |
| mkInvalid := func(s string) error { |
| return language.NewValueError([]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", mkInvalid("ac")}, |
| {"ac-u-ca-co-pinyin", mkInvalid("ac")}, |
| {"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, "-") { |
| if x != "" { |
| 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}, |
| {nil, "00-t-0o", 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 |
| } |
| } |
| } |
| } |
| |
| func TestParseAcceptLanguageTooBig(t *testing.T) { |
| s := strings.Repeat("en-x-a-", 333) |
| _, _, err := ParseAcceptLanguage(s) |
| if err != language.ErrSyntax { |
| t.Errorf("ParseAcceptLanguage() unexpected error: got %v, want %v", err, language.ErrSyntax) |
| } |
| s += "en-x-a" |
| _, _, err = ParseAcceptLanguage(s) |
| if err != errTagListTooLarge { |
| t.Errorf("ParseAcceptLanguage() unexpected error: got %v, want %v", err, errTagListTooLarge) |
| } |
| } |
