--- /dev/null
+// Copyright 2012 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 collate
+
+import (
+ "testing"
+
+ "golang.org/x/text/collate/build"
+ "golang.org/x/text/internal/colltab"
+ "golang.org/x/text/unicode/norm"
+)
+
+type ColElems []Weights
+
+type input struct {
+ str string
+ ces [][]int
+}
+
+type check struct {
+ in string
+ n int
+ out ColElems
+}
+
+type tableTest struct {
+ in []input
+ chk []check
+}
+
+func w(ce ...int) Weights {
+ return W(ce...)
+}
+
+var defaults = w(0)
+
+func pt(p, t int) []int {
+ return []int{p, defaults.Secondary, t}
+}
+
+func makeTable(in []input) (*Collator, error) {
+ b := build.NewBuilder()
+ for _, r := range in {
+ if e := b.Add([]rune(r.str), r.ces, nil); e != nil {
+ panic(e)
+ }
+ }
+ t, err := b.Build()
+ if err != nil {
+ return nil, err
+ }
+ return NewFromTable(t), nil
+}
+
+// modSeq holds a seqeunce of modifiers in increasing order of CCC long enough
+// to cause a segment overflow if not handled correctly. The last rune in this
+// list has a CCC of 214.
+var modSeq = []rune{
+ 0x05B1, 0x05B2, 0x05B3, 0x05B4, 0x05B5, 0x05B6, 0x05B7, 0x05B8, 0x05B9, 0x05BB,
+ 0x05BC, 0x05BD, 0x05BF, 0x05C1, 0x05C2, 0xFB1E, 0x064B, 0x064C, 0x064D, 0x064E,
+ 0x064F, 0x0650, 0x0651, 0x0652, 0x0670, 0x0711, 0x0C55, 0x0C56, 0x0E38, 0x0E48,
+ 0x0EB8, 0x0EC8, 0x0F71, 0x0F72, 0x0F74, 0x0321, 0x1DCE,
+}
+
+var mods []input
+var modW = func() ColElems {
+ ws := ColElems{}
+ for _, r := range modSeq {
+ rune := norm.NFC.PropertiesString(string(r))
+ ws = append(ws, w(0, int(rune.CCC())))
+ mods = append(mods, input{string(r), [][]int{{0, int(rune.CCC())}}})
+ }
+ return ws
+}()
+
+var appendNextTests = []tableTest{
+ { // test getWeights
+ []input{
+ {"a", [][]int{{100}}},
+ {"b", [][]int{{105}}},
+ {"c", [][]int{{110}}},
+ {"ß", [][]int{{120}}},
+ },
+ []check{
+ {"a", 1, ColElems{w(100)}},
+ {"b", 1, ColElems{w(105)}},
+ {"c", 1, ColElems{w(110)}},
+ {"d", 1, ColElems{w(0x50064)}},
+ {"ab", 1, ColElems{w(100)}},
+ {"bc", 1, ColElems{w(105)}},
+ {"dd", 1, ColElems{w(0x50064)}},
+ {"ß", 2, ColElems{w(120)}},
+ },
+ },
+ { // test expansion
+ []input{
+ {"u", [][]int{{100}}},
+ {"U", [][]int{{100}, {0, 25}}},
+ {"w", [][]int{{100}, {100}}},
+ {"W", [][]int{{100}, {0, 25}, {100}, {0, 25}}},
+ },
+ []check{
+ {"u", 1, ColElems{w(100)}},
+ {"U", 1, ColElems{w(100), w(0, 25)}},
+ {"w", 1, ColElems{w(100), w(100)}},
+ {"W", 1, ColElems{w(100), w(0, 25), w(100), w(0, 25)}},
+ },
+ },
+ { // test decompose
+ []input{
+ {"D", [][]int{pt(104, 8)}},
+ {"z", [][]int{pt(130, 8)}},
+ {"\u030C", [][]int{{0, 40}}}, // Caron
+ {"\u01C5", [][]int{pt(104, 9), pt(130, 4), {0, 40, 0x1F}}}, // Dž = D+z+caron
+ },
+ []check{
+ {"\u01C5", 2, ColElems{w(pt(104, 9)...), w(pt(130, 4)...), w(0, 40, 0x1F)}},
+ },
+ },
+ { // test basic contraction
+ []input{
+ {"a", [][]int{{100}}},
+ {"ab", [][]int{{101}}},
+ {"aab", [][]int{{101}, {101}}},
+ {"abc", [][]int{{102}}},
+ {"b", [][]int{{200}}},
+ {"c", [][]int{{300}}},
+ {"d", [][]int{{400}}},
+ },
+ []check{
+ {"a", 1, ColElems{w(100)}},
+ {"aa", 1, ColElems{w(100)}},
+ {"aac", 1, ColElems{w(100)}},
+ {"d", 1, ColElems{w(400)}},
+ {"ab", 2, ColElems{w(101)}},
+ {"abb", 2, ColElems{w(101)}},
+ {"aab", 3, ColElems{w(101), w(101)}},
+ {"aaba", 3, ColElems{w(101), w(101)}},
+ {"abc", 3, ColElems{w(102)}},
+ {"abcd", 3, ColElems{w(102)}},
+ },
+ },
+ { // test discontinuous contraction
+ append(mods, []input{
+ // modifiers; secondary weight equals ccc
+ {"\u0316", [][]int{{0, 220}}},
+ {"\u0317", [][]int{{0, 220}, {0, 220}}},
+ {"\u302D", [][]int{{0, 222}}},
+ {"\u302E", [][]int{{0, 225}}}, // used as starter
+ {"\u302F", [][]int{{0, 224}}}, // used as starter
+ {"\u18A9", [][]int{{0, 228}}},
+ {"\u0300", [][]int{{0, 230}}},
+ {"\u0301", [][]int{{0, 230}}},
+ {"\u0315", [][]int{{0, 232}}},
+ {"\u031A", [][]int{{0, 232}}},
+ {"\u035C", [][]int{{0, 233}}},
+ {"\u035F", [][]int{{0, 233}}},
+ {"\u035D", [][]int{{0, 234}}},
+ {"\u035E", [][]int{{0, 234}}},
+ {"\u0345", [][]int{{0, 240}}},
+
+ // starters
+ {"a", [][]int{{100}}},
+ {"b", [][]int{{200}}},
+ {"c", [][]int{{300}}},
+ {"\u03B1", [][]int{{900}}},
+ {"\x01", [][]int{{0, 0, 0, 0}}},
+
+ // contractions
+ {"a\u0300", [][]int{{101}}},
+ {"a\u0301", [][]int{{102}}},
+ {"a\u035E", [][]int{{110}}},
+ {"a\u035Eb\u035E", [][]int{{115}}},
+ {"ac\u035Eaca\u035E", [][]int{{116}}},
+ {"a\u035Db\u035D", [][]int{{117}}},
+ {"a\u0301\u035Db", [][]int{{120}}},
+ {"a\u0301\u035F", [][]int{{121}}},
+ {"a\u0301\u035Fb", [][]int{{119}}},
+ {"\u03B1\u0345", [][]int{{901}, {902}}},
+ {"\u302E\u302F", [][]int{{0, 131}, {0, 131}}},
+ {"\u302F\u18A9", [][]int{{0, 130}}},
+ }...),
+ []check{
+ {"a\x01\u0300", 1, ColElems{w(100)}},
+ {"ab", 1, ColElems{w(100)}}, // closing segment
+ {"a\u0316\u0300b", 5, ColElems{w(101), w(0, 220)}}, // closing segment
+ {"a\u0316\u0300", 5, ColElems{w(101), w(0, 220)}}, // no closing segment
+ {"a\u0316\u0300\u035Cb", 5, ColElems{w(101), w(0, 220)}}, // completes before segment end
+ {"a\u0316\u0300\u035C", 5, ColElems{w(101), w(0, 220)}}, // completes before segment end
+
+ {"a\u0316\u0301b", 5, ColElems{w(102), w(0, 220)}}, // closing segment
+ {"a\u0316\u0301", 5, ColElems{w(102), w(0, 220)}}, // no closing segment
+ {"a\u0316\u0301\u035Cb", 5, ColElems{w(102), w(0, 220)}}, // completes before segment end
+ {"a\u0316\u0301\u035C", 5, ColElems{w(102), w(0, 220)}}, // completes before segment end
+
+ // match blocked by modifier with same ccc
+ {"a\u0301\u0315\u031A\u035Fb", 3, ColElems{w(102)}},
+
+ // multiple gaps
+ {"a\u0301\u035Db", 6, ColElems{w(120)}},
+ {"a\u0301\u035F", 5, ColElems{w(121)}},
+ {"a\u0301\u035Fb", 6, ColElems{w(119)}},
+ {"a\u0316\u0301\u035F", 7, ColElems{w(121), w(0, 220)}},
+ {"a\u0301\u0315\u035Fb", 7, ColElems{w(121), w(0, 232)}},
+ {"a\u0316\u0301\u0315\u035Db", 5, ColElems{w(102), w(0, 220)}},
+ {"a\u0316\u0301\u0315\u035F", 9, ColElems{w(121), w(0, 220), w(0, 232)}},
+ {"a\u0316\u0301\u0315\u035Fb", 9, ColElems{w(121), w(0, 220), w(0, 232)}},
+ {"a\u0316\u0301\u0315\u035F\u035D", 9, ColElems{w(121), w(0, 220), w(0, 232)}},
+ {"a\u0316\u0301\u0315\u035F\u035Db", 9, ColElems{w(121), w(0, 220), w(0, 232)}},
+
+ // handling of segment overflow
+ { // just fits within segment
+ "a" + string(modSeq[:30]) + "\u0301",
+ 3 + len(string(modSeq[:30])),
+ append(ColElems{w(102)}, modW[:30]...),
+ },
+ {"a" + string(modSeq[:31]) + "\u0301", 1, ColElems{w(100)}}, // overflow
+ {"a" + string(modSeq) + "\u0301", 1, ColElems{w(100)}},
+ { // just fits within segment with two interstitial runes
+ "a" + string(modSeq[:28]) + "\u0301\u0315\u035F",
+ 7 + len(string(modSeq[:28])),
+ append(append(ColElems{w(121)}, modW[:28]...), w(0, 232)),
+ },
+ { // second half does not fit within segment
+ "a" + string(modSeq[:29]) + "\u0301\u0315\u035F",
+ 3 + len(string(modSeq[:29])),
+ append(ColElems{w(102)}, modW[:29]...),
+ },
+
+ // discontinuity can only occur in last normalization segment
+ {"a\u035Eb\u035E", 6, ColElems{w(115)}},
+ {"a\u0316\u035Eb\u035E", 5, ColElems{w(110), w(0, 220)}},
+ {"a\u035Db\u035D", 6, ColElems{w(117)}},
+ {"a\u0316\u035Db\u035D", 1, ColElems{w(100)}},
+ {"a\u035Eb\u0316\u035E", 8, ColElems{w(115), w(0, 220)}},
+ {"a\u035Db\u0316\u035D", 8, ColElems{w(117), w(0, 220)}},
+ {"ac\u035Eaca\u035E", 9, ColElems{w(116)}},
+ {"a\u0316c\u035Eaca\u035E", 1, ColElems{w(100)}},
+ {"ac\u035Eac\u0316a\u035E", 1, ColElems{w(100)}},
+
+ // expanding contraction
+ {"\u03B1\u0345", 4, ColElems{w(901), w(902)}},
+
+ // Theoretical possibilities
+ // contraction within a gap
+ {"a\u302F\u18A9\u0301", 9, ColElems{w(102), w(0, 130)}},
+ // expansion within a gap
+ {"a\u0317\u0301", 5, ColElems{w(102), w(0, 220), w(0, 220)}},
+ // repeating CCC blocks last modifier
+ {"a\u302E\u302F\u0301", 1, ColElems{w(100)}},
+ // The trailing combining characters (with lower CCC) should block the first one.
+ // TODO: make the following pass.
+ // {"a\u035E\u0316\u0316", 1, ColElems{w(100)}},
+ {"a\u035F\u035Eb", 5, ColElems{w(110), w(0, 233)}},
+ // Last combiner should match after normalization.
+ // TODO: make the following pass.
+ // {"a\u035D\u0301", 3, ColElems{w(102), w(0, 234)}},
+ // The first combiner is blocking the second one as they have the same CCC.
+ {"a\u035D\u035Eb", 1, ColElems{w(100)}},
+ },
+ },
+}
+
+func TestAppendNext(t *testing.T) {
+ for i, tt := range appendNextTests {
+ c, err := makeTable(tt.in)
+ if err != nil {
+ t.Errorf("%d: error creating table: %v", i, err)
+ continue
+ }
+ for j, chk := range tt.chk {
+ ws, n := c.t.AppendNext(nil, []byte(chk.in))
+ if n != chk.n {
+ t.Errorf("%d:%d: bytes consumed was %d; want %d", i, j, n, chk.n)
+ }
+ out := convertFromWeights(chk.out)
+ if len(ws) != len(out) {
+ 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)
+ continue
+ }
+ for k, w := range ws {
+ w, _ = colltab.MakeElem(w.Primary(), w.Secondary(), int(w.Tertiary()), 0)
+ if w != out[k] {
+ t.Errorf("%d:%d: Weights %d was %X; want %X", i, j, k, w, out[k])
+ }
+ }
+ }
+ }
+}
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