Hulk did something

[bytom/vapor.git] / vendor / golang.org / x / text / width / tables_test.go

diff --git a/vendor/golang.org/x/text/width/tables_test.go b/vendor/golang.org/x/text/width/tables_test.go
new file mode 100644 (file)
index 0000000..189febd
--- /dev/null
+++ b/vendor/golang.org/x/text/width/tables_test.go
@@ -0,0 +1,59 @@
+// Copyright 2015 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 width
+
+import (
+       "testing"
+
+       "golang.org/x/text/internal/testtext"
+)
+
+const (
+       loSurrogate = 0xD800
+       hiSurrogate = 0xDFFF
+)
+
+func TestTables(t *testing.T) {
+       testtext.SkipIfNotLong(t)
+
+       runes := map[rune]Kind{}
+       getWidthData(func(r rune, tag elem, _ rune) {
+               runes[r] = tag.kind()
+       })
+       for r := rune(0); r < 0x10FFFF; r++ {
+               if loSurrogate <= r && r <= hiSurrogate {
+                       continue
+               }
+               p := LookupRune(r)
+               if got, want := p.Kind(), runes[r]; got != want {
+                       t.Errorf("Kind of %U was %s; want %s.", r, got, want)
+               }
+               want, mapped := foldRune(r)
+               if got := p.Folded(); (got == 0) == mapped || got != 0 && got != want {
+                       t.Errorf("Folded(%U) = %U; want %U", r, got, want)
+               }
+               want, mapped = widenRune(r)
+               if got := p.Wide(); (got == 0) == mapped || got != 0 && got != want {
+                       t.Errorf("Wide(%U) = %U; want %U", r, got, want)
+               }
+               want, mapped = narrowRune(r)
+               if got := p.Narrow(); (got == 0) == mapped || got != 0 && got != want {
+                       t.Errorf("Narrow(%U) = %U; want %U", r, got, want)
+               }
+       }
+}
+
+// TestAmbiguous verifies that that ambiguous runes with a mapping always map to
+// a halfwidth rune.
+func TestAmbiguous(t *testing.T) {
+       for r, m := range mapRunes {
+               if m.e != tagAmbiguous {
+                       continue
+               }
+               if k := mapRunes[m.r].e.kind(); k != EastAsianHalfwidth {
+                       t.Errorf("Rune %U is ambiguous and maps to a rune of type %v", r, k)
+               }
+       }
+}