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exp/locale/collate: added regression test for collate package
based on UCA test files. R=r CC=golang-dev https://golang.org/cl/6216056
This commit is contained in:
Marcel van Lohuizen
parent
5d2cfc2faa
commit
77b1378c3e
180
src/pkg/exp/locale/collate/regtest.go
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180
src/pkg/exp/locale/collate/regtest.go
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// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build ignore
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package main
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import (
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"archive/zip"
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"bufio"
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"bytes"
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"exp/locale/collate"
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"flag"
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"fmt"
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"io"
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"io/ioutil"
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"log"
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"net/http"
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"os"
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"path"
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"regexp"
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"strconv"
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"strings"
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"unicode"
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)
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// This regression test runs tests for the test files in CollationTest.zip
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// (taken from http://www.unicode.org/Public/UCA/<unicode.Version>/).
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//
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// The test files have the following form:
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// # header
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// 0009 0021; # ('\u0009') <CHARACTER TABULATION> [| | | 0201 025E]
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// 0009 003F; # ('\u0009') <CHARACTER TABULATION> [| | | 0201 0263]
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// 000A 0021; # ('\u000A') <LINE FEED (LF)> [| | | 0202 025E]
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// 000A 003F; # ('\u000A') <LINE FEED (LF)> [| | | 0202 0263]
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//
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// The part before the semicolon is the hex representation of a sequence
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// of runes. After the hash mark is a comment. The strings
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// represented by rune sequence are in the file in sorted order, as
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// defined by the DUCET.
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var url = flag.String("url",
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"http://www.unicode.org/Public/UCA/"+unicode.Version+"/CollationTest.zip",
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"URL of Unicode collation tests zip file")
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var localFiles = flag.Bool("local",
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false,
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"data files have been copied to the current directory; for debugging only")
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type Test struct {
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name string
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str []string
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comment []string
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}
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var versionRe = regexp.MustCompile(`# UCA Version: (.*)\n?$`)
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var testRe = regexp.MustCompile(`^([\dA-F ]+);.*# (.*)\n?$`)
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func Error(e error) {
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if e != nil {
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log.Fatal(e)
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}
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}
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func loadTestData() []Test {
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if *localFiles {
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pwd, _ := os.Getwd()
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*url = "file://" + path.Join(pwd, path.Base(*url))
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}
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t := &http.Transport{}
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t.RegisterProtocol("file", http.NewFileTransport(http.Dir("/")))
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c := &http.Client{Transport: t}
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resp, err := c.Get(*url)
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Error(err)
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if resp.StatusCode != 200 {
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log.Fatalf(`bad GET status for "%s": %s`, *url, resp.Status)
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}
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f := resp.Body
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buffer, err := ioutil.ReadAll(f)
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f.Close()
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Error(err)
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archive, err := zip.NewReader(bytes.NewReader(buffer), int64(len(buffer)))
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Error(err)
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tests := []Test{}
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for _, f := range archive.File {
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// Skip the short versions, which are simply duplicates of the long versions.
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if strings.Contains(f.Name, "SHORT") || f.FileInfo().IsDir() {
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continue
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}
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ff, err := f.Open()
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Error(err)
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defer ff.Close()
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input := bufio.NewReader(ff)
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test := Test{name: path.Base(f.Name)}
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for {
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line, err := input.ReadString('\n')
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if err != nil {
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if err == io.EOF {
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break
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}
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log.Fatal(err)
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}
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if len(line) <= 1 || line[0] == '#' {
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if m := versionRe.FindStringSubmatch(line); m != nil {
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if m[1] != unicode.Version {
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log.Printf("warning:%s: version is %s; want %s", f.Name, m[1], unicode.Version)
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}
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}
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continue
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}
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m := testRe.FindStringSubmatch(line)
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if m == nil || len(m) < 3 {
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log.Fatalf(`Failed to parse: "%s" result: %#v`, line, m)
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}
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str := ""
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for _, split := range strings.Split(m[1], " ") {
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r, err := strconv.ParseUint(split, 16, 64)
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Error(err)
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str += string(rune(r))
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}
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test.str = append(test.str, str)
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test.comment = append(test.comment, m[2])
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}
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tests = append(tests, test)
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}
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return tests
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}
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var errorCount int
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func fail(t Test, pattern string, args ...interface{}) {
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format := fmt.Sprintf("error:%s:%s", t.name, pattern)
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log.Printf(format, args...)
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errorCount++
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if errorCount > 30 {
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log.Fatal("too many errors")
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}
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}
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func runes(b []byte) []rune {
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return []rune(string(b))
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}
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func doTest(t Test) {
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c := collate.Root
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c.Strength = collate.Tertiary
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b := &collate.Buffer{}
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if strings.Contains(t.name, "NON_IGNOR") {
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c.Alternate = collate.AltNonIgnorable
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}
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prev := []byte(t.str[0])
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for i := 1; i < len(t.str); i++ {
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s := []byte(t.str[i])
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ka := c.Key(b, prev)
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kb := c.Key(b, s)
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if r := bytes.Compare(ka, kb); r == 1 {
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fail(t, "%d: Key(%.4X) < Key(%.4X) (%X < %X) == %d; want -1 or 0", i, runes(prev), runes(s), ka, kb, r)
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prev = s
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continue
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}
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if r := c.Compare(b, prev, s); r == 1 {
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fail(t, "%d: Compare(%.4X, %.4X) == %d; want -1 or 0", i, runes(prev), runes(s), r)
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}
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if r := c.Compare(b, s, prev); r == -1 {
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fail(t, "%d: Compare(%.4X, %.4X) == %d; want 1 or 0", i, runes(s), runes(prev), r)
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}
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prev = s
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}
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}
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func main() {
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flag.Parse()
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for _, test := range loadTestData() {
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doTest(test)
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}
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if errorCount == 0 {
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fmt.Println("PASS")
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}
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}
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