internal/export/idna/idna_test.go - text - Git at Google

 // 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 idna

 import (
 	"fmt"
 	"strconv"
 	"strings"
 	"testing"

 	"golang.org/x/text/internal/gen"
 	"golang.org/x/text/internal/testtext"
 	"golang.org/x/text/internal/ucd"
 )

 func TestAllocToUnicode(t *testing.T) {
 	avg := testtext.AllocsPerRun(1000, func() {
 		ToUnicode("www.golang.org")
 	})
 	if avg > 0 {
 		t.Errorf("got %f; want 0", avg)
 	}
 }

 func TestAllocToASCII(t *testing.T) {
 	avg := testtext.AllocsPerRun(1000, func() {
 		ToASCII("www.golang.org")
 	})
 	if avg > 0 {
 		t.Errorf("got %f; want 0", avg)
 	}
 }

 func TestProfiles(t *testing.T) {
 	testCases := []struct {
 		name      string
 		want, got *Profile
 	}{
 		{"Punycode", punycode, New()},
 		{"Registration", registration, New(ValidateForRegistration())},
 		{"Registration", registration, New(
 			ValidateForRegistration(),
 			VerifyDNSLength(true),
 			BidiRule(),
 		)},
 		{"Lookup", lookup, New(MapForLookup(), BidiRule(), Transitional(true))},
 		{"Display", display, New(MapForLookup(), BidiRule())},
 	}
 	for _, tc := range testCases {
 		// Functions are not comparable, but the printed version will include
 		// their pointers.
 		got := fmt.Sprintf("%#v", tc.got)
 		want := fmt.Sprintf("%#v", tc.want)
 		if got != want {
 			t.Errorf("%s: \ngot  %#v,\nwant %#v", tc.name, got, want)
 		}
 	}
 }

 // doTest performs a single test f(input) and verifies that the output matches
 // out and that the returned error is expected. The errors string contains
 // all allowed error codes as categorized in
 // http://www.unicode.org/Public/idna/9.0.0/IdnaTest.txt:
 // P: Processing
 // V: Validity
 // A: to ASCII
 // B: Bidi
 // C: Context J
 func doTest(t *testing.T, f func(string) (string, error), name, input, want, errors string) {
 	errors = strings.Trim(errors, "[]")
 	test := "ok"
 	if errors != "" {
 		test = "err:" + errors
 	}
 	// Replace some of the escape sequences to make it easier to single out
 	// tests on the command name.
 	in := strings.Trim(strconv.QuoteToASCII(input), `"`)
 	in = strings.Replace(in, `\u`, "#", -1)
 	in = strings.Replace(in, `\U`, "#", -1)
 	name = fmt.Sprintf("%s/%s/%s", name, in, test)

 	testtext.Run(t, name, func(t *testing.T) {
 		got, err := f(input)

 		if err != nil {
 			code := err.(interface {
 				code() string
 			}).code()
 			if strings.Index(errors, code) == -1 {
 				t.Errorf("error %q not in set of expected errors {%v}", code, errors)
 			}
 		} else if errors != "" {
 			t.Errorf("no errors; want error in {%v}", errors)
 		}

 		if want != "" && got != want {
 			t.Errorf(`string: got %+q; want %+q`, got, want)
 		}
 	})
 }

 // TestLabelErrors tests strings returned in case of error. All results should
 // be identical to the reference implementation and can be verified at
 // http://unicode.org/cldr/utility/idna.jsp. The reference implementation,
 // however, seems to not display Bidi and ContextJ errors.
 //
 // In some cases the behavior of browsers is added as a comment. In all cases,
 // whenever a resolve search returns an error here, Chrome will treat the input
 // string as a search string (including those for Bidi and Context J errors),
 // unless noted otherwise.
 func TestLabelErrors(t *testing.T) {
 	encode := func(s string) string { s, _ = encode(acePrefix, s); return s }
 	type kind struct {
 		name string
 		f    func(string) (string, error)
 	}
 	punyA := kind{"PunycodeA", punycode.ToASCII}
 	resolve := kind{"ResolveA", Lookup.ToASCII}
 	display := kind{"ToUnicode", Display.ToUnicode}
 	p := New(VerifyDNSLength(true), MapForLookup(), BidiRule())
 	lengthU := kind{"CheckLengthU", p.ToUnicode}
 	lengthA := kind{"CheckLengthA", p.ToASCII}
 	p = New(MapForLookup(), StrictDomainName(false))
 	std3 := kind{"STD3", p.ToASCII}

 	testCases := []struct {
 		kind
 		input   string
 		want    string
 		wantErr string
 	}{
 		{lengthU, "", "", "A4"}, // From UTS 46 conformance test.
 		{lengthA, "", "", "A4"},

 		{lengthU, "xn--", "", "A4"},
 		{lengthU, "foo.xn--", "foo.", "A4"}, // TODO: is dropping xn-- correct?
 		{lengthU, "xn--.foo", ".foo", "A4"},
 		{lengthU, "foo.xn--.bar", "foo..bar", "A4"},

 		{display, "xn--", "", ""},
 		{display, "foo.xn--", "foo.", ""}, // TODO: is dropping xn-- correct?
 		{display, "xn--.foo", ".foo", ""},
 		{display, "foo.xn--.bar", "foo..bar", ""},

 		{lengthA, "a..b", "a..b", "A4"},
 		{punyA, ".b", ".b", ""},
 		// For backwards compatibility, the Punycode profile does not map runes.
 		{punyA, "\u3002b", "xn--b-83t", ""},
 		{punyA, "..b", "..b", ""},
 		// Only strip leading empty labels for certain profiles. Stripping
 		// leading empty labels here but not for "empty" punycode above seems
 		// inconsistent, but seems to be applied by both the conformance test
 		// and Chrome. So we turn it off by default, support it as an option,
 		// and enable it in profiles where it seems commonplace.
 		{lengthA, ".b", "b", ""},
 		{lengthA, "\u3002b", "b", ""},
 		{lengthA, "..b", "b", ""},
 		{lengthA, "b..", "b..", ""},

 		{resolve, "a..b", "a..b", ""},
 		{resolve, ".b", "b", ""},
 		{resolve, "\u3002b", "b", ""},
 		{resolve, "..b", "b", ""},
 		{resolve, "b..", "b..", ""},

 		// Raw punycode
 		{punyA, "", "", ""},
 		{punyA, "*.foo.com", "*.foo.com", ""},
 		{punyA, "Foo.com", "Foo.com", ""},

 		// STD3 rules
 		{display, "*.foo.com", "*.foo.com", "P1"},
 		{std3, "*.foo.com", "*.foo.com", ""},

 		// Don't map U+2490 (DIGIT NINE FULL STOP). This is the behavior of
 		// Chrome, Safari, and IE. Firefox will first map ⒐ to 9. and return
 		// lab9.be.
 		{resolve, "lab⒐be", "xn--labbe-zh9b", "P1"}, // encode("lab⒐be")
 		{display, "lab⒐be", "lab⒐be", "P1"},

 		{resolve, "plan⒐faß.de", "xn--planfass-c31e.de", "P1"}, // encode("plan⒐fass") + ".de"
 		{display, "Plan⒐faß.de", "plan⒐faß.de", "P1"},

 		// Chrome 54.0 recognizes the error and treats this input verbatim as a
 		// search string.
 		// Safari 10.0 (non-conform spec) decomposes "⒈" and computes the
 		// punycode on the result using transitional mapping.
 		// Firefox 49.0.1 goes haywire on this string and prints a bunch of what
 		// seems to be nested punycode encodings.
 		{resolve, "日本⒈co.ßßß.de", "xn--co-wuw5954azlb.ssssss.de", "P1"},
 		{display, "日本⒈co.ßßß.de", "日本⒈co.ßßß.de", "P1"},

 		{resolve, "a\u200Cb", "ab", ""},
 		{display, "a\u200Cb", "a\u200Cb", "C"},

 		{resolve, encode("a\u200Cb"), encode("a\u200Cb"), "C"},
 		{display, "a\u200Cb", "a\u200Cb", "C"},

 		{resolve, "grﻋﺮﺑﻲ.de", "xn--gr-gtd9a1b0g.de", "B"},
 		{
 			// Notice how the string gets transformed, even with an error.
 			// Chrome will use the original string if it finds an error, so not
 			// the transformed one.
 			display,
 			"gr\ufecb\ufeae\ufe91\ufef2.de",
 			"gr\u0639\u0631\u0628\u064a.de",
 			"B",
 		},

 		{resolve, "\u0671.\u03c3\u07dc", "xn--qib.xn--4xa21s", "B"}, // ٱ.σߜ
 		{display, "\u0671.\u03c3\u07dc", "\u0671.\u03c3\u07dc", "B"},

 		// normalize input
 		{resolve, "a\u0323\u0322", "xn--jta191l", ""}, // ạ̢
 		{display, "a\u0323\u0322", "\u1ea1\u0322", ""},

 		// Non-normalized strings are not normalized when they originate from
 		// punycode. Despite the error, Chrome, Safari and Firefox will attempt
 		// to look up the input punycode.
 		{resolve, encode("a\u0323\u0322") + ".com", "xn--a-tdbc.com", "V1"},
 		{display, encode("a\u0323\u0322") + ".com", "a\u0323\u0322.com", "V1"},
 	}

 	for _, tc := range testCases {
 		doTest(t, tc.f, tc.name, tc.input, tc.want, tc.wantErr)
 	}
 }

 func TestConformance(t *testing.T) {
 	testtext.SkipIfNotLong(t)

 	r := gen.OpenUnicodeFile("idna", "", "IdnaTest.txt")
 	defer r.Close()

 	section := "main"
 	started := false
 	p := ucd.New(r, ucd.CommentHandler(func(s string) {
 		if started {
 			section = strings.ToLower(strings.Split(s, " ")[0])
 		}
 	}))
 	transitional := New(Transitional(true), VerifyDNSLength(true), BidiRule(), MapForLookup())
 	nonTransitional := New(VerifyDNSLength(true), BidiRule(), MapForLookup())
 	for p.Next() {
 		started = true

 		// What to test
 		profiles := []*Profile{}
 		switch p.String(0) {
 		case "T":
 			profiles = append(profiles, transitional)
 		case "N":
 			profiles = append(profiles, nonTransitional)
 		case "B":
 			profiles = append(profiles, transitional)
 			profiles = append(profiles, nonTransitional)
 		}

 		src := unescape(p.String(1))

 		wantToUnicode := unescape(p.String(2))
 		if wantToUnicode == "" {
 			wantToUnicode = src
 		}
 		wantToASCII := unescape(p.String(3))
 		if wantToASCII == "" {
 			wantToASCII = wantToUnicode
 		}
 		wantErrToUnicode := ""
 		if strings.HasPrefix(wantToUnicode, "[") {
 			wantErrToUnicode = wantToUnicode
 			wantToUnicode = ""
 		}
 		wantErrToASCII := ""
 		if strings.HasPrefix(wantToASCII, "[") {
 			wantErrToASCII = wantToASCII
 			wantToASCII = ""
 		}

 		// TODO: also do IDNA tests.
 		// invalidInIDNA2008 := p.String(4) == "NV8"

 		for _, p := range profiles {
 			name := fmt.Sprintf("%s:%s", section, p)
 			doTest(t, p.ToUnicode, name+":ToUnicode", src, wantToUnicode, wantErrToUnicode)
 			doTest(t, p.ToASCII, name+":ToASCII", src, wantToASCII, wantErrToASCII)
 		}
 	}
 }

 func unescape(s string) string {
 	s, err := strconv.Unquote(`"` + s + `"`)
 	if err != nil {
 		panic(err)
 	}
 	return s
 }
	// 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 idna

	import (
	"fmt"
	"strconv"
	"strings"
	"testing"

	"golang.org/x/text/internal/gen"
	"golang.org/x/text/internal/testtext"
	"golang.org/x/text/internal/ucd"
	)

	func TestAllocToUnicode(t *testing.T) {
	avg := testtext.AllocsPerRun(1000, func() {
	ToUnicode("www.golang.org")
	})
	if avg > 0 {
	t.Errorf("got %f; want 0", avg)
	}
	}

	func TestAllocToASCII(t *testing.T) {
	avg := testtext.AllocsPerRun(1000, func() {
	ToASCII("www.golang.org")
	})
	if avg > 0 {
	t.Errorf("got %f; want 0", avg)
	}
	}

	func TestProfiles(t *testing.T) {
	testCases := []struct {
	name string
	want, got *Profile
	}{
	{"Punycode", punycode, New()},
	{"Registration", registration, New(ValidateForRegistration())},
	{"Registration", registration, New(
	ValidateForRegistration(),
	VerifyDNSLength(true),
	BidiRule(),
	)},
	{"Lookup", lookup, New(MapForLookup(), BidiRule(), Transitional(true))},
	{"Display", display, New(MapForLookup(), BidiRule())},
	}
	for _, tc := range testCases {
	// Functions are not comparable, but the printed version will include
	// their pointers.
	got := fmt.Sprintf("%#v", tc.got)
	want := fmt.Sprintf("%#v", tc.want)
	if got != want {
	t.Errorf("%s: \ngot %#v,\nwant %#v", tc.name, got, want)
	}
	}
	}

	// doTest performs a single test f(input) and verifies that the output matches
	// out and that the returned error is expected. The errors string contains
	// all allowed error codes as categorized in
	// http://www.unicode.org/Public/idna/9.0.0/IdnaTest.txt:
	// P: Processing
	// V: Validity
	// A: to ASCII
	// B: Bidi
	// C: Context J
	func doTest(t *testing.T, f func(string) (string, error), name, input, want, errors string) {
	errors = strings.Trim(errors, "[]")
	test := "ok"
	if errors != "" {
	test = "err:" + errors
	}
	// Replace some of the escape sequences to make it easier to single out
	// tests on the command name.
	in := strings.Trim(strconv.QuoteToASCII(input), `"`)
	in = strings.Replace(in, `\u`, "#", -1)
	in = strings.Replace(in, `\U`, "#", -1)
	name = fmt.Sprintf("%s/%s/%s", name, in, test)

	testtext.Run(t, name, func(t *testing.T) {
	got, err := f(input)

	if err != nil {
	code := err.(interface {
	code() string
	}).code()
	if strings.Index(errors, code) == -1 {
	t.Errorf("error %q not in set of expected errors {%v}", code, errors)
	}
	} else if errors != "" {
	t.Errorf("no errors; want error in {%v}", errors)
	}

	if want != "" && got != want {
	t.Errorf(`string: got %+q; want %+q`, got, want)
	}
	})
	}

	// TestLabelErrors tests strings returned in case of error. All results should
	// be identical to the reference implementation and can be verified at
	// http://unicode.org/cldr/utility/idna.jsp. The reference implementation,
	// however, seems to not display Bidi and ContextJ errors.
	//
	// In some cases the behavior of browsers is added as a comment. In all cases,
	// whenever a resolve search returns an error here, Chrome will treat the input
	// string as a search string (including those for Bidi and Context J errors),
	// unless noted otherwise.
	func TestLabelErrors(t *testing.T) {
	encode := func(s string) string { s, _ = encode(acePrefix, s); return s }
	type kind struct {
	name string
	f func(string) (string, error)
	}
	punyA := kind{"PunycodeA", punycode.ToASCII}
	resolve := kind{"ResolveA", Lookup.ToASCII}
	display := kind{"ToUnicode", Display.ToUnicode}
	p := New(VerifyDNSLength(true), MapForLookup(), BidiRule())
	lengthU := kind{"CheckLengthU", p.ToUnicode}
	lengthA := kind{"CheckLengthA", p.ToASCII}
	p = New(MapForLookup(), StrictDomainName(false))
	std3 := kind{"STD3", p.ToASCII}

	testCases := []struct {
	kind
	input string
	want string
	wantErr string
	}{
	{lengthU, "", "", "A4"}, // From UTS 46 conformance test.
	{lengthA, "", "", "A4"},

	{lengthU, "xn--", "", "A4"},
	{lengthU, "foo.xn--", "foo.", "A4"}, // TODO: is dropping xn-- correct?
	{lengthU, "xn--.foo", ".foo", "A4"},
	{lengthU, "foo.xn--.bar", "foo..bar", "A4"},

	{display, "xn--", "", ""},
	{display, "foo.xn--", "foo.", ""}, // TODO: is dropping xn-- correct?
	{display, "xn--.foo", ".foo", ""},
	{display, "foo.xn--.bar", "foo..bar", ""},

	{lengthA, "a..b", "a..b", "A4"},
	{punyA, ".b", ".b", ""},
	// For backwards compatibility, the Punycode profile does not map runes.
	{punyA, "\u3002b", "xn--b-83t", ""},
	{punyA, "..b", "..b", ""},
	// Only strip leading empty labels for certain profiles. Stripping
	// leading empty labels here but not for "empty" punycode above seems
	// inconsistent, but seems to be applied by both the conformance test
	// and Chrome. So we turn it off by default, support it as an option,
	// and enable it in profiles where it seems commonplace.
	{lengthA, ".b", "b", ""},
	{lengthA, "\u3002b", "b", ""},
	{lengthA, "..b", "b", ""},
	{lengthA, "b..", "b..", ""},

	{resolve, "a..b", "a..b", ""},
	{resolve, ".b", "b", ""},
	{resolve, "\u3002b", "b", ""},
	{resolve, "..b", "b", ""},
	{resolve, "b..", "b..", ""},

	// Raw punycode
	{punyA, "", "", ""},
	{punyA, ".foo.com", ".foo.com", ""},
	{punyA, "Foo.com", "Foo.com", ""},

	// STD3 rules
	{display, ".foo.com", ".foo.com", "P1"},
	{std3, ".foo.com", ".foo.com", ""},

	// Don't map U+2490 (DIGIT NINE FULL STOP). This is the behavior of
	// Chrome, Safari, and IE. Firefox will first map ⒐ to 9. and return
	// lab9.be.
	{resolve, "lab⒐be", "xn--labbe-zh9b", "P1"}, // encode("lab⒐be")
	{display, "lab⒐be", "lab⒐be", "P1"},

	{resolve, "plan⒐faß.de", "xn--planfass-c31e.de", "P1"}, // encode("plan⒐fass") + ".de"
	{display, "Plan⒐faß.de", "plan⒐faß.de", "P1"},

	// Chrome 54.0 recognizes the error and treats this input verbatim as a
	// search string.
	// Safari 10.0 (non-conform spec) decomposes "⒈" and computes the
	// punycode on the result using transitional mapping.
	// Firefox 49.0.1 goes haywire on this string and prints a bunch of what
	// seems to be nested punycode encodings.
	{resolve, "日本⒈co.ßßß.de", "xn--co-wuw5954azlb.ssssss.de", "P1"},
	{display, "日本⒈co.ßßß.de", "日本⒈co.ßßß.de", "P1"},

	{resolve, "a\u200Cb", "ab", ""},
	{display, "a\u200Cb", "a\u200Cb", "C"},

	{resolve, encode("a\u200Cb"), encode("a\u200Cb"), "C"},
	{display, "a\u200Cb", "a\u200Cb", "C"},

	{resolve, "grﻋﺮﺑﻲ.de", "xn--gr-gtd9a1b0g.de", "B"},
	{
	// Notice how the string gets transformed, even with an error.
	// Chrome will use the original string if it finds an error, so not
	// the transformed one.
	display,
	"gr\ufecb\ufeae\ufe91\ufef2.de",
	"gr\u0639\u0631\u0628\u064a.de",
	"B",
	},

	{resolve, "\u0671.\u03c3\u07dc", "xn--qib.xn--4xa21s", "B"}, // ٱ.σߜ
	{display, "\u0671.\u03c3\u07dc", "\u0671.\u03c3\u07dc", "B"},

	// normalize input
	{resolve, "a\u0323\u0322", "xn--jta191l", ""}, // ạ̢
	{display, "a\u0323\u0322", "\u1ea1\u0322", ""},

	// Non-normalized strings are not normalized when they originate from
	// punycode. Despite the error, Chrome, Safari and Firefox will attempt
	// to look up the input punycode.
	{resolve, encode("a\u0323\u0322") + ".com", "xn--a-tdbc.com", "V1"},
	{display, encode("a\u0323\u0322") + ".com", "a\u0323\u0322.com", "V1"},
	}

	for _, tc := range testCases {
	doTest(t, tc.f, tc.name, tc.input, tc.want, tc.wantErr)
	}
	}

	func TestConformance(t *testing.T) {
	testtext.SkipIfNotLong(t)

	r := gen.OpenUnicodeFile("idna", "", "IdnaTest.txt")
	defer r.Close()

	section := "main"
	started := false
	p := ucd.New(r, ucd.CommentHandler(func(s string) {
	if started {
	section = strings.ToLower(strings.Split(s, " ")[0])
	}
	}))
	transitional := New(Transitional(true), VerifyDNSLength(true), BidiRule(), MapForLookup())
	nonTransitional := New(VerifyDNSLength(true), BidiRule(), MapForLookup())
	for p.Next() {
	started = true

	// What to test
	profiles := []*Profile{}
	switch p.String(0) {
	case "T":
	profiles = append(profiles, transitional)
	case "N":
	profiles = append(profiles, nonTransitional)
	case "B":
	profiles = append(profiles, transitional)
	profiles = append(profiles, nonTransitional)
	}

	src := unescape(p.String(1))

	wantToUnicode := unescape(p.String(2))
	if wantToUnicode == "" {
	wantToUnicode = src
	}
	wantToASCII := unescape(p.String(3))
	if wantToASCII == "" {
	wantToASCII = wantToUnicode
	}
	wantErrToUnicode := ""
	if strings.HasPrefix(wantToUnicode, "[") {
	wantErrToUnicode = wantToUnicode
	wantToUnicode = ""
	}
	wantErrToASCII := ""
	if strings.HasPrefix(wantToASCII, "[") {
	wantErrToASCII = wantToASCII
	wantToASCII = ""
	}

	// TODO: also do IDNA tests.
	// invalidInIDNA2008 := p.String(4) == "NV8"

	for _, p := range profiles {
	name := fmt.Sprintf("%s:%s", section, p)
	doTest(t, p.ToUnicode, name+":ToUnicode", src, wantToUnicode, wantErrToUnicode)
	doTest(t, p.ToASCII, name+":ToASCII", src, wantToASCII, wantErrToASCII)
	}
	}
	}

	func unescape(s string) string {
	s, err := strconv.Unquote(`"` + s + `"`)
	if err != nil {
	panic(err)
	}
	return s
	}