292 lines
9.1 KiB
Go
292 lines
9.1 KiB
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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package collate
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import (
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"testing"
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"golang.org/x/text/collate/build"
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"golang.org/x/text/internal/colltab"
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"golang.org/x/text/unicode/norm"
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)
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type ColElems []Weights
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type input struct {
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str string
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ces [][]int
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}
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type check struct {
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in string
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n int
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out ColElems
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}
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type tableTest struct {
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in []input
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chk []check
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}
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func w(ce ...int) Weights {
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return W(ce...)
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}
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var defaults = w(0)
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func pt(p, t int) []int {
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return []int{p, defaults.Secondary, t}
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}
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func makeTable(in []input) (*Collator, error) {
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b := build.NewBuilder()
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for _, r := range in {
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if e := b.Add([]rune(r.str), r.ces, nil); e != nil {
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panic(e)
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}
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}
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t, err := b.Build()
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if err != nil {
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return nil, err
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}
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return NewFromTable(t), nil
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}
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// modSeq holds a seqeunce of modifiers in increasing order of CCC long enough
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// to cause a segment overflow if not handled correctly. The last rune in this
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// list has a CCC of 214.
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var modSeq = []rune{
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0x05B1, 0x05B2, 0x05B3, 0x05B4, 0x05B5, 0x05B6, 0x05B7, 0x05B8, 0x05B9, 0x05BB,
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0x05BC, 0x05BD, 0x05BF, 0x05C1, 0x05C2, 0xFB1E, 0x064B, 0x064C, 0x064D, 0x064E,
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0x064F, 0x0650, 0x0651, 0x0652, 0x0670, 0x0711, 0x0C55, 0x0C56, 0x0E38, 0x0E48,
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0x0EB8, 0x0EC8, 0x0F71, 0x0F72, 0x0F74, 0x0321, 0x1DCE,
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}
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var mods []input
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var modW = func() ColElems {
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ws := ColElems{}
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for _, r := range modSeq {
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rune := norm.NFC.PropertiesString(string(r))
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ws = append(ws, w(0, int(rune.CCC())))
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mods = append(mods, input{string(r), [][]int{{0, int(rune.CCC())}}})
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}
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return ws
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}()
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var appendNextTests = []tableTest{
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{ // test getWeights
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[]input{
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{"a", [][]int{{100}}},
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{"b", [][]int{{105}}},
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{"c", [][]int{{110}}},
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{"ß", [][]int{{120}}},
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},
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[]check{
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{"a", 1, ColElems{w(100)}},
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{"b", 1, ColElems{w(105)}},
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{"c", 1, ColElems{w(110)}},
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{"d", 1, ColElems{w(0x50064)}},
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{"ab", 1, ColElems{w(100)}},
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{"bc", 1, ColElems{w(105)}},
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{"dd", 1, ColElems{w(0x50064)}},
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{"ß", 2, ColElems{w(120)}},
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},
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},
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{ // test expansion
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[]input{
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{"u", [][]int{{100}}},
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{"U", [][]int{{100}, {0, 25}}},
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{"w", [][]int{{100}, {100}}},
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{"W", [][]int{{100}, {0, 25}, {100}, {0, 25}}},
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},
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[]check{
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{"u", 1, ColElems{w(100)}},
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{"U", 1, ColElems{w(100), w(0, 25)}},
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{"w", 1, ColElems{w(100), w(100)}},
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{"W", 1, ColElems{w(100), w(0, 25), w(100), w(0, 25)}},
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},
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},
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{ // test decompose
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[]input{
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{"D", [][]int{pt(104, 8)}},
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{"z", [][]int{pt(130, 8)}},
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{"\u030C", [][]int{{0, 40}}}, // Caron
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{"\u01C5", [][]int{pt(104, 9), pt(130, 4), {0, 40, 0x1F}}}, // Dž = D+z+caron
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},
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[]check{
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{"\u01C5", 2, ColElems{w(pt(104, 9)...), w(pt(130, 4)...), w(0, 40, 0x1F)}},
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},
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},
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{ // test basic contraction
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[]input{
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{"a", [][]int{{100}}},
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{"ab", [][]int{{101}}},
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{"aab", [][]int{{101}, {101}}},
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{"abc", [][]int{{102}}},
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{"b", [][]int{{200}}},
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{"c", [][]int{{300}}},
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{"d", [][]int{{400}}},
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},
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[]check{
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{"a", 1, ColElems{w(100)}},
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{"aa", 1, ColElems{w(100)}},
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{"aac", 1, ColElems{w(100)}},
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{"d", 1, ColElems{w(400)}},
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{"ab", 2, ColElems{w(101)}},
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{"abb", 2, ColElems{w(101)}},
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{"aab", 3, ColElems{w(101), w(101)}},
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{"aaba", 3, ColElems{w(101), w(101)}},
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{"abc", 3, ColElems{w(102)}},
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{"abcd", 3, ColElems{w(102)}},
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},
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},
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{ // test discontinuous contraction
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append(mods, []input{
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// modifiers; secondary weight equals ccc
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{"\u0316", [][]int{{0, 220}}},
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{"\u0317", [][]int{{0, 220}, {0, 220}}},
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{"\u302D", [][]int{{0, 222}}},
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{"\u302E", [][]int{{0, 225}}}, // used as starter
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{"\u302F", [][]int{{0, 224}}}, // used as starter
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{"\u18A9", [][]int{{0, 228}}},
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{"\u0300", [][]int{{0, 230}}},
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{"\u0301", [][]int{{0, 230}}},
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{"\u0315", [][]int{{0, 232}}},
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{"\u031A", [][]int{{0, 232}}},
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{"\u035C", [][]int{{0, 233}}},
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{"\u035F", [][]int{{0, 233}}},
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{"\u035D", [][]int{{0, 234}}},
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{"\u035E", [][]int{{0, 234}}},
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{"\u0345", [][]int{{0, 240}}},
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// starters
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{"a", [][]int{{100}}},
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{"b", [][]int{{200}}},
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{"c", [][]int{{300}}},
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{"\u03B1", [][]int{{900}}},
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{"\x01", [][]int{{0, 0, 0, 0}}},
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// contractions
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{"a\u0300", [][]int{{101}}},
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{"a\u0301", [][]int{{102}}},
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{"a\u035E", [][]int{{110}}},
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{"a\u035Eb\u035E", [][]int{{115}}},
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{"ac\u035Eaca\u035E", [][]int{{116}}},
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{"a\u035Db\u035D", [][]int{{117}}},
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{"a\u0301\u035Db", [][]int{{120}}},
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{"a\u0301\u035F", [][]int{{121}}},
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{"a\u0301\u035Fb", [][]int{{119}}},
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{"\u03B1\u0345", [][]int{{901}, {902}}},
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{"\u302E\u302F", [][]int{{0, 131}, {0, 131}}},
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{"\u302F\u18A9", [][]int{{0, 130}}},
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}...),
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[]check{
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{"a\x01\u0300", 1, ColElems{w(100)}},
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{"ab", 1, ColElems{w(100)}}, // closing segment
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{"a\u0316\u0300b", 5, ColElems{w(101), w(0, 220)}}, // closing segment
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{"a\u0316\u0300", 5, ColElems{w(101), w(0, 220)}}, // no closing segment
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{"a\u0316\u0300\u035Cb", 5, ColElems{w(101), w(0, 220)}}, // completes before segment end
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{"a\u0316\u0300\u035C", 5, ColElems{w(101), w(0, 220)}}, // completes before segment end
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{"a\u0316\u0301b", 5, ColElems{w(102), w(0, 220)}}, // closing segment
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{"a\u0316\u0301", 5, ColElems{w(102), w(0, 220)}}, // no closing segment
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{"a\u0316\u0301\u035Cb", 5, ColElems{w(102), w(0, 220)}}, // completes before segment end
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{"a\u0316\u0301\u035C", 5, ColElems{w(102), w(0, 220)}}, // completes before segment end
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// match blocked by modifier with same ccc
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{"a\u0301\u0315\u031A\u035Fb", 3, ColElems{w(102)}},
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// multiple gaps
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{"a\u0301\u035Db", 6, ColElems{w(120)}},
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{"a\u0301\u035F", 5, ColElems{w(121)}},
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{"a\u0301\u035Fb", 6, ColElems{w(119)}},
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{"a\u0316\u0301\u035F", 7, ColElems{w(121), w(0, 220)}},
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{"a\u0301\u0315\u035Fb", 7, ColElems{w(121), w(0, 232)}},
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{"a\u0316\u0301\u0315\u035Db", 5, ColElems{w(102), w(0, 220)}},
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{"a\u0316\u0301\u0315\u035F", 9, ColElems{w(121), w(0, 220), w(0, 232)}},
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{"a\u0316\u0301\u0315\u035Fb", 9, ColElems{w(121), w(0, 220), w(0, 232)}},
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{"a\u0316\u0301\u0315\u035F\u035D", 9, ColElems{w(121), w(0, 220), w(0, 232)}},
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{"a\u0316\u0301\u0315\u035F\u035Db", 9, ColElems{w(121), w(0, 220), w(0, 232)}},
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// handling of segment overflow
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{ // just fits within segment
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"a" + string(modSeq[:30]) + "\u0301",
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3 + len(string(modSeq[:30])),
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append(ColElems{w(102)}, modW[:30]...),
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},
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{"a" + string(modSeq[:31]) + "\u0301", 1, ColElems{w(100)}}, // overflow
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{"a" + string(modSeq) + "\u0301", 1, ColElems{w(100)}},
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{ // just fits within segment with two interstitial runes
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"a" + string(modSeq[:28]) + "\u0301\u0315\u035F",
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7 + len(string(modSeq[:28])),
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append(append(ColElems{w(121)}, modW[:28]...), w(0, 232)),
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},
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{ // second half does not fit within segment
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"a" + string(modSeq[:29]) + "\u0301\u0315\u035F",
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3 + len(string(modSeq[:29])),
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append(ColElems{w(102)}, modW[:29]...),
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},
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// discontinuity can only occur in last normalization segment
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{"a\u035Eb\u035E", 6, ColElems{w(115)}},
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{"a\u0316\u035Eb\u035E", 5, ColElems{w(110), w(0, 220)}},
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{"a\u035Db\u035D", 6, ColElems{w(117)}},
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{"a\u0316\u035Db\u035D", 1, ColElems{w(100)}},
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{"a\u035Eb\u0316\u035E", 8, ColElems{w(115), w(0, 220)}},
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{"a\u035Db\u0316\u035D", 8, ColElems{w(117), w(0, 220)}},
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{"ac\u035Eaca\u035E", 9, ColElems{w(116)}},
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{"a\u0316c\u035Eaca\u035E", 1, ColElems{w(100)}},
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{"ac\u035Eac\u0316a\u035E", 1, ColElems{w(100)}},
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// expanding contraction
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{"\u03B1\u0345", 4, ColElems{w(901), w(902)}},
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// Theoretical possibilities
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// contraction within a gap
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{"a\u302F\u18A9\u0301", 9, ColElems{w(102), w(0, 130)}},
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// expansion within a gap
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{"a\u0317\u0301", 5, ColElems{w(102), w(0, 220), w(0, 220)}},
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// repeating CCC blocks last modifier
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{"a\u302E\u302F\u0301", 1, ColElems{w(100)}},
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// The trailing combining characters (with lower CCC) should block the first one.
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// TODO: make the following pass.
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// {"a\u035E\u0316\u0316", 1, ColElems{w(100)}},
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{"a\u035F\u035Eb", 5, ColElems{w(110), w(0, 233)}},
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// Last combiner should match after normalization.
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// TODO: make the following pass.
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// {"a\u035D\u0301", 3, ColElems{w(102), w(0, 234)}},
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// The first combiner is blocking the second one as they have the same CCC.
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{"a\u035D\u035Eb", 1, ColElems{w(100)}},
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},
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},
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}
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func TestAppendNext(t *testing.T) {
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for i, tt := range appendNextTests {
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c, err := makeTable(tt.in)
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if err != nil {
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t.Errorf("%d: error creating table: %v", i, err)
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continue
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}
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for j, chk := range tt.chk {
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ws, n := c.t.AppendNext(nil, []byte(chk.in))
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if n != chk.n {
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t.Errorf("%d:%d: bytes consumed was %d; want %d", i, j, n, chk.n)
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}
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out := convertFromWeights(chk.out)
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if len(ws) != len(out) {
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t.Errorf("%d:%d: len(ws) was %d; want %d (%X vs %X)\n%X", i, j, len(ws), len(out), ws, out, chk.in)
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continue
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}
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for k, w := range ws {
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w, _ = colltab.MakeElem(w.Primary(), w.Secondary(), int(w.Tertiary()), 0)
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if w != out[k] {
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t.Errorf("%d:%d: Weights %d was %X; want %X", i, j, k, w, out[k])
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}
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}
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}
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}
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}
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