1 files changed, 359 insertions, 0 deletions
diff --git a/vendor/golang.org/x/text/language/match_test.go b/vendor/golang.org/x/text/language/match_test.go
new file mode 100644
index 0000000..c21b863
--- /dev/null
+++ b/vendor/golang.org/x/text/language/match_test.go
@@ -0,0 +1,359 @@
+// 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"
+	"flag"
+	"fmt"
+	"os"
+	"path"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"golang.org/x/text/internal/testtext"
+	"golang.org/x/text/internal/ucd"
+)
+
+var verbose = flag.Bool("verbose", false, "set to true to print the internal tables of matchers")
+
+func TestCompliance(t *testing.T) {
+	filepath.Walk("testdata", func(file string, info os.FileInfo, err error) error {
+		if info.IsDir() {
+			return nil
+		}
+		r, err := os.Open(file)
+		if err != nil {
+			t.Fatal(err)
+		}
+		ucd.Parse(r, func(p *ucd.Parser) {
+			name := strings.Replace(path.Join(p.String(0), p.String(1)), " ", "", -1)
+			if skip[name] {
+				return
+			}
+			t.Run(info.Name()+"/"+name, func(t *testing.T) {
+				supported := makeTagList(p.String(0))
+				desired := makeTagList(p.String(1))
+				gotCombined, index, conf := NewMatcher(supported).Match(desired...)
+
+				gotMatch := supported[index]
+				wantMatch := Raw.Make(p.String(2)) // wantMatch may be null
+				if gotMatch != wantMatch {
+					t.Fatalf("match: got %q; want %q (%v)", gotMatch, wantMatch, conf)
+				}
+				if tag := strings.TrimSpace(p.String(3)); tag != "" {
+					wantCombined := Raw.MustParse(tag)
+					if err == nil && gotCombined != wantCombined {
+						t.Errorf("combined: got %q; want %q (%v)", gotCombined, wantCombined, conf)
+					}
+				}
+			})
+		})
+		return nil
+	})
+}
+
+var skip = map[string]bool{
+	// TODO: bugs
+	// Honor the wildcard match. This may only be useful to select non-exact
+	// stuff.
+	"mul,af/nl": true, // match: got "af"; want "mul"
+
+	// TODO: include other extensions.
+	// combined: got "en-GB-u-ca-buddhist-nu-arab"; want "en-GB-fonipa-t-m0-iso-i0-pinyin-u-ca-buddhist-nu-arab"
+	"und,en-GB-u-sd-gbsct/en-fonipa-u-nu-Arab-ca-buddhist-t-m0-iso-i0-pinyin": true,
+
+	// Inconsistencies with Mark Davis' implementation where it is not clear
+	// which is better.
+
+	// Inconsistencies in combined. I think the Go approach is more appropriate.
+	// We could use -u-rg- as alternative.
+	"und,fr/fr-BE-fonipa":              true, // combined: got "fr"; want "fr-BE-fonipa"
+	"und,fr-CA/fr-BE-fonipa":           true, // combined: got "fr-CA"; want "fr-BE-fonipa"
+	"und,fr-fonupa/fr-BE-fonipa":       true, // combined: got "fr-fonupa"; want "fr-BE-fonipa"
+	"und,no/nn-BE-fonipa":              true, // combined: got "no"; want "no-BE-fonipa"
+	"50,und,fr-CA-fonupa/fr-BE-fonipa": true, // combined: got "fr-CA-fonupa"; want "fr-BE-fonipa"
+
+	// The initial number is a threshold. As we don't use scoring, we will not
+	// implement this.
+	"50,und,fr-Cyrl-CA-fonupa/fr-BE-fonipa": true,
+	// match: got "und"; want "fr-Cyrl-CA-fonupa"
+	// combined: got "und"; want "fr-Cyrl-BE-fonipa"
+
+	// Other interesting cases to test:
+	// - Should same language or same script have the preference if there is
+	//   usually no understanding of the other script?
+	// - More specific region in desired may replace enclosing supported.
+}
+
+func makeTagList(s string) (tags []Tag) {
+	for _, s := range strings.Split(s, ",") {
+		tags = append(tags, mk(strings.TrimSpace(s)))
+	}
+	return tags
+}
+
+func TestMatchStrings(t *testing.T) {
+	testCases := []struct {
+		supported string
+		desired   string // strings separted by |
+		tag       string
+		index     int
+	}{{
+		supported: "en",
+		desired:   "",
+		tag:       "en",
+		index:     0,
+	}, {
+		supported: "en",
+		desired:   "nl",
+		tag:       "en",
+		index:     0,
+	}, {
+		supported: "en,nl",
+		desired:   "nl",
+		tag:       "nl",
+		index:     1,
+	}, {
+		supported: "en,nl",
+		desired:   "nl|en",
+		tag:       "nl",
+		index:     1,
+	}, {
+		supported: "en-GB,nl",
+		desired:   "en ; q=0.1,nl",
+		tag:       "nl",
+		index:     1,
+	}, {
+		supported: "en-GB,nl",
+		desired:   "en;q=0.005 | dk; q=0.1,nl ",
+		tag:       "en-GB",
+		index:     0,
+	}, {
+		// do not match faulty tags with und
+		supported: "en,und",
+		desired:   "|en",
+		tag:       "en",
+		index:     0,
+	}}
+	for _, tc := range testCases {
+		t.Run(path.Join(tc.supported, tc.desired), func(t *testing.T) {
+			m := NewMatcher(makeTagList(tc.supported))
+			tag, index := MatchStrings(m, strings.Split(tc.desired, "|")...)
+			if tag.String() != tc.tag || index != tc.index {
+				t.Errorf("got %v, %d; want %v, %d", tag, index, tc.tag, tc.index)
+			}
+		})
+	}
+}
+
+func TestRegionGroups(t *testing.T) {
+	testCases := []struct {
+		a, b     string
+		distance uint8
+	}{
+		{"zh-TW", "zh-HK", 5},
+		{"zh-MO", "zh-HK", 4},
+		{"es-ES", "es-AR", 5},
+		{"es-ES", "es", 4},
+		{"es-419", "es-MX", 4},
+		{"es-AR", "es-MX", 4},
+		{"es-ES", "es-MX", 5},
+		{"es-PT", "es-MX", 5},
+	}
+	for _, tc := range testCases {
+		a := MustParse(tc.a)
+		aScript, _ := a.Script()
+		b := MustParse(tc.b)
+		bScript, _ := b.Script()
+
+		if aScript != bScript {
+			t.Errorf("scripts differ: %q vs %q", aScript, bScript)
+			continue
+		}
+		d, _ := regionGroupDist(a.region(), b.region(), aScript.scriptID, a.lang())
+		if d != tc.distance {
+			t.Errorf("got %q; want %q", d, tc.distance)
+		}
+	}
+}
+
+func TestIsParadigmLocale(t *testing.T) {
+	testCases := map[string]bool{
+		"en-US":  true,
+		"en-GB":  true,
+		"en-VI":  false,
+		"es-GB":  false,
+		"es-ES":  true,
+		"es-419": true,
+	}
+	for str, want := range testCases {
+		tt := Make(str)
+		tag := tt.tag()
+		got := isParadigmLocale(tag.LangID, tag.RegionID)
+		if got != want {
+			t.Errorf("isPL(%q) = %v; want %v", str, got, want)
+		}
+	}
+}
+
+// Implementation of String methods for various types for debugging purposes.
+
+func (m *matcher) String() string {
+	w := &bytes.Buffer{}
+	fmt.Fprintln(w, "Default:", m.default_)
+	for tag, h := range m.index {
+		fmt.Fprintf(w, "  %s: %v\n", tag, h)
+	}
+	return w.String()
+}
+
+func (h *matchHeader) String() string {
+	w := &bytes.Buffer{}
+	fmt.Fprint(w, "haveTag: ")
+	for _, h := range h.haveTags {
+		fmt.Fprintf(w, "%v, ", h)
+	}
+	return w.String()
+}
+
+func (t haveTag) String() string {
+	return fmt.Sprintf("%v:%d:%v:%v-%v|%v", t.tag, t.index, t.conf, t.maxRegion, t.maxScript, t.altScript)
+}
+
+func TestBestMatchAlloc(t *testing.T) {
+	m := NewMatcher(makeTagList("en sr nl"))
+	// Go allocates when creating a list of tags from a single tag!
+	list := []Tag{English}
+	avg := testtext.AllocsPerRun(1, func() {
+		m.Match(list...)
+	})
+	if avg > 0 {
+		t.Errorf("got %f; want 0", avg)
+	}
+}
+
+var benchHave = []Tag{
+	mk("en"),
+	mk("en-GB"),
+	mk("za"),
+	mk("zh-Hant"),
+	mk("zh-Hans-CN"),
+	mk("zh"),
+	mk("zh-HK"),
+	mk("ar-MK"),
+	mk("en-CA"),
+	mk("fr-CA"),
+	mk("fr-US"),
+	mk("fr-CH"),
+	mk("fr"),
+	mk("lt"),
+	mk("lv"),
+	mk("iw"),
+	mk("iw-NL"),
+	mk("he"),
+	mk("he-IT"),
+	mk("tlh"),
+	mk("ja"),
+	mk("ja-Jpan"),
+	mk("ja-Jpan-JP"),
+	mk("de"),
+	mk("de-CH"),
+	mk("de-AT"),
+	mk("de-DE"),
+	mk("sr"),
+	mk("sr-Latn"),
+	mk("sr-Cyrl"),
+	mk("sr-ME"),
+}
+
+var benchWant = [][]Tag{
+	[]Tag{
+		mk("en"),
+	},
+	[]Tag{
+		mk("en-AU"),
+		mk("de-HK"),
+		mk("nl"),
+		mk("fy"),
+		mk("lv"),
+	},
+	[]Tag{
+		mk("en-AU"),
+		mk("de-HK"),
+		mk("nl"),
+		mk("fy"),
+	},
+	[]Tag{
+		mk("ja-Hant"),
+		mk("da-HK"),
+		mk("nl"),
+		mk("zh-TW"),
+	},
+	[]Tag{
+		mk("ja-Hant"),
+		mk("da-HK"),
+		mk("nl"),
+		mk("hr"),
+	},
+}
+
+func BenchmarkMatch(b *testing.B) {
+	m := newMatcher(benchHave, nil)
+	for i := 0; i < b.N; i++ {
+		for _, want := range benchWant {
+			m.getBest(want...)
+		}
+	}
+}
+
+func BenchmarkMatchExact(b *testing.B) {
+	want := mk("en")
+	m := newMatcher(benchHave, nil)
+	for i := 0; i < b.N; i++ {
+		m.getBest(want)
+	}
+}
+
+func BenchmarkMatchAltLanguagePresent(b *testing.B) {
+	want := mk("hr")
+	m := newMatcher(benchHave, nil)
+	for i := 0; i < b.N; i++ {
+		m.getBest(want)
+	}
+}
+
+func BenchmarkMatchAltLanguageNotPresent(b *testing.B) {
+	want := mk("nn")
+	m := newMatcher(benchHave, nil)
+	for i := 0; i < b.N; i++ {
+		m.getBest(want)
+	}
+}
+
+func BenchmarkMatchAltScriptPresent(b *testing.B) {
+	want := mk("zh-Hant-CN")
+	m := newMatcher(benchHave, nil)
+	for i := 0; i < b.N; i++ {
+		m.getBest(want)
+	}
+}
+
+func BenchmarkMatchAltScriptNotPresent(b *testing.B) {
+	want := mk("fr-Cyrl")
+	m := newMatcher(benchHave, nil)
+	for i := 0; i < b.N; i++ {
+		m.getBest(want)
+	}
+}
+
+func BenchmarkMatchLimitedExact(b *testing.B) {
+	want := []Tag{mk("he-NL"), mk("iw-NL")}
+	m := newMatcher(benchHave, nil)
+	for i := 0; i < b.N; i++ {
+		m.getBest(want...)
+	}
+}