Hulk did something

[bytom/vapor.git] / vendor / golang.org / x / text / unicode / norm / iter_test.go

diff --git a/vendor/golang.org/x/text/unicode/norm/iter_test.go b/vendor/golang.org/x/text/unicode/norm/iter_test.go
new file mode 100644 (file)
index 0000000..d95aa30
--- /dev/null
+++ b/vendor/golang.org/x/text/unicode/norm/iter_test.go
@@ -0,0 +1,98 @@
+// Copyright 2011 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 norm
+
+import (
+       "strings"
+       "testing"
+)
+
+func doIterNorm(f Form, s string) []byte {
+       acc := []byte{}
+       i := Iter{}
+       i.InitString(f, s)
+       for !i.Done() {
+               acc = append(acc, i.Next()...)
+       }
+       return acc
+}
+
+func TestIterNext(t *testing.T) {
+       runNormTests(t, "IterNext", func(f Form, out []byte, s string) []byte {
+               return doIterNorm(f, string(append(out, s...)))
+       })
+}
+
+type SegmentTest struct {
+       in  string
+       out []string
+}
+
+var segmentTests = []SegmentTest{
+       {"\u1E0A\u0323a", []string{"\x44\u0323\u0307", "a", ""}},
+       {rep('a', segSize), append(strings.Split(rep('a', segSize), ""), "")},
+       {rep('a', segSize+2), append(strings.Split(rep('a', segSize+2), ""), "")},
+       {rep('a', segSize) + "\u0300aa",
+               append(strings.Split(rep('a', segSize-1), ""), "a\u0300", "a", "a", "")},
+
+       // U+0f73 is NOT treated as a starter as it is a modifier
+       {"a" + grave(29) + "\u0f73", []string{"a" + grave(29), cgj + "\u0f73"}},
+       {"a\u0f73", []string{"a\u0f73"}},
+
+       // U+ff9e is treated as a non-starter.
+       // TODO: should we? Note that this will only affect iteration, as whether
+       // or not we do so does not affect the normalization output and will either
+       // way result in consistent iteration output.
+       {"a" + grave(30) + "\uff9e", []string{"a" + grave(30), cgj + "\uff9e"}},
+       {"a\uff9e", []string{"a\uff9e"}},
+}
+
+var segmentTestsK = []SegmentTest{
+       {"\u3332", []string{"\u30D5", "\u30A1", "\u30E9", "\u30C3", "\u30C8\u3099", ""}},
+       // last segment of multi-segment decomposition needs normalization
+       {"\u3332\u093C", []string{"\u30D5", "\u30A1", "\u30E9", "\u30C3", "\u30C8\u093C\u3099", ""}},
+       {"\u320E", []string{"\x28", "\uAC00", "\x29"}},
+
+       // last segment should be copied to start of buffer.
+       {"\ufdfa", []string{"\u0635", "\u0644", "\u0649", " ", "\u0627", "\u0644", "\u0644", "\u0647", " ", "\u0639", "\u0644", "\u064a", "\u0647", " ", "\u0648", "\u0633", "\u0644", "\u0645", ""}},
+       {"\ufdfa" + grave(30), []string{"\u0635", "\u0644", "\u0649", " ", "\u0627", "\u0644", "\u0644", "\u0647", " ", "\u0639", "\u0644", "\u064a", "\u0647", " ", "\u0648", "\u0633", "\u0644", "\u0645" + grave(30), ""}},
+       {"\uFDFA" + grave(64), []string{"\u0635", "\u0644", "\u0649", " ", "\u0627", "\u0644", "\u0644", "\u0647", " ", "\u0639", "\u0644", "\u064a", "\u0647", " ", "\u0648", "\u0633", "\u0644", "\u0645" + grave(30), cgj + grave(30), cgj + grave(4), ""}},
+
+       // Hangul and Jamo are grouped together.
+       {"\uAC00", []string{"\u1100\u1161", ""}},
+       {"\uAC01", []string{"\u1100\u1161\u11A8", ""}},
+       {"\u1100\u1161", []string{"\u1100\u1161", ""}},
+}
+
+// Note that, by design, segmentation is equal for composing and decomposing forms.
+func TestIterSegmentation(t *testing.T) {
+       segmentTest(t, "SegmentTestD", NFD, segmentTests)
+       segmentTest(t, "SegmentTestC", NFC, segmentTests)
+       segmentTest(t, "SegmentTestKD", NFKD, segmentTestsK)
+       segmentTest(t, "SegmentTestKC", NFKC, segmentTestsK)
+}
+
+func segmentTest(t *testing.T, name string, f Form, tests []SegmentTest) {
+       iter := Iter{}
+       for i, tt := range tests {
+               iter.InitString(f, tt.in)
+               for j, seg := range tt.out {
+                       if seg == "" {
+                               if !iter.Done() {
+                                       res := string(iter.Next())
+                                       t.Errorf(`%s:%d:%d: expected Done()==true, found segment %+q`, name, i, j, res)
+                               }
+                               continue
+                       }
+                       if iter.Done() {
+                               t.Errorf("%s:%d:%d: Done()==true, want false", name, i, j)
+                       }
+                       seg = f.String(seg)
+                       if res := string(iter.Next()); res != seg {
+                               t.Errorf(`%s:%d:%d" segment was %+q (%d); want %+q (%d)`, name, i, j, pc(res), len(res), pc(seg), len(seg))
+                       }
+               }
+       }
+}