/usr/share/gocode/src/golang.org/x/text/internal/colltab/trie_test.go is in golang-golang-x-text-dev 0.0~git20170627.0.6353ef0-1ubuntu2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 | // 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 colltab
import (
"testing"
)
// We take the smallest, largest and an arbitrary value for each
// of the UTF-8 sequence lengths.
var testRunes = []rune{
0x01, 0x0C, 0x7F, // 1-byte sequences
0x80, 0x100, 0x7FF, // 2-byte sequences
0x800, 0x999, 0xFFFF, // 3-byte sequences
0x10000, 0x10101, 0x10FFFF, // 4-byte sequences
0x200, 0x201, 0x202, 0x210, 0x215, // five entries in one sparse block
}
// Test cases for illegal runes.
type trietest struct {
size int
bytes []byte
}
var tests = []trietest{
// illegal runes
{1, []byte{0x80}},
{1, []byte{0xFF}},
{1, []byte{t2, tx - 1}},
{1, []byte{t2, t2}},
{2, []byte{t3, tx, tx - 1}},
{2, []byte{t3, tx, t2}},
{1, []byte{t3, tx - 1, tx}},
{3, []byte{t4, tx, tx, tx - 1}},
{3, []byte{t4, tx, tx, t2}},
{1, []byte{t4, t2, tx, tx - 1}},
{2, []byte{t4, tx, t2, tx - 1}},
// short runes
{0, []byte{t2}},
{0, []byte{t3, tx}},
{0, []byte{t4, tx, tx}},
// we only support UTF-8 up to utf8.UTFMax bytes (4 bytes)
{1, []byte{t5, tx, tx, tx, tx}},
{1, []byte{t6, tx, tx, tx, tx, tx}},
}
func TestLookupTrie(t *testing.T) {
for i, r := range testRunes {
b := []byte(string(r))
v, sz := testTrie.lookup(b)
if int(v) != i {
t.Errorf("lookup(%U): found value %#x, expected %#x", r, v, i)
}
if sz != len(b) {
t.Errorf("lookup(%U): found size %d, expected %d", r, sz, len(b))
}
}
for i, tt := range tests {
v, sz := testTrie.lookup(tt.bytes)
if int(v) != 0 {
t.Errorf("lookup of illegal rune, case %d: found value %#x, expected 0", i, v)
}
if sz != tt.size {
t.Errorf("lookup of illegal rune, case %d: found size %d, expected %d", i, sz, tt.size)
}
}
}
// test data is taken from exp/collate/locale/build/trie_test.go
var testValues = [832]uint32{
0x000c: 0x00000001,
0x007f: 0x00000002,
0x00c0: 0x00000003,
0x0100: 0x00000004,
0x0140: 0x0000000c, 0x0141: 0x0000000d, 0x0142: 0x0000000e,
0x0150: 0x0000000f,
0x0155: 0x00000010,
0x01bf: 0x00000005,
0x01c0: 0x00000006,
0x0219: 0x00000007,
0x027f: 0x00000008,
0x0280: 0x00000009,
0x02c1: 0x0000000a,
0x033f: 0x0000000b,
}
var testLookup = [640]uint16{
0x0e0: 0x05, 0x0e6: 0x06,
0x13f: 0x07,
0x140: 0x08, 0x144: 0x09,
0x190: 0x03,
0x1ff: 0x0a,
0x20f: 0x05,
0x242: 0x01, 0x244: 0x02,
0x248: 0x03,
0x25f: 0x04,
0x260: 0x01,
0x26f: 0x02,
0x270: 0x04, 0x274: 0x06,
}
var testTrie = Trie{testLookup[6*blockSize:], testValues[:], testLookup[:], testValues[:]}
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