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107 lines
2.5 KiB
Go
107 lines
2.5 KiB
Go
// 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 colltab
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import (
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"testing"
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)
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// We take the smallest, largest and an arbitrary value for each
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// of the UTF-8 sequence lengths.
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var testRunes = []rune{
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0x01, 0x0C, 0x7F, // 1-byte sequences
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0x80, 0x100, 0x7FF, // 2-byte sequences
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0x800, 0x999, 0xFFFF, // 3-byte sequences
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0x10000, 0x10101, 0x10FFFF, // 4-byte sequences
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0x200, 0x201, 0x202, 0x210, 0x215, // five entries in one sparse block
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}
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// Test cases for illegal runes.
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type trietest struct {
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size int
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bytes []byte
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}
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var tests = []trietest{
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// illegal runes
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{1, []byte{0x80}},
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{1, []byte{0xFF}},
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{1, []byte{t2, tx - 1}},
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{1, []byte{t2, t2}},
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{2, []byte{t3, tx, tx - 1}},
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{2, []byte{t3, tx, t2}},
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{1, []byte{t3, tx - 1, tx}},
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{3, []byte{t4, tx, tx, tx - 1}},
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{3, []byte{t4, tx, tx, t2}},
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{1, []byte{t4, t2, tx, tx - 1}},
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{2, []byte{t4, tx, t2, tx - 1}},
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// short runes
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{0, []byte{t2}},
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{0, []byte{t3, tx}},
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{0, []byte{t4, tx, tx}},
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// we only support UTF-8 up to utf8.UTFMax bytes (4 bytes)
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{1, []byte{t5, tx, tx, tx, tx}},
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{1, []byte{t6, tx, tx, tx, tx, tx}},
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}
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func TestLookupTrie(t *testing.T) {
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for i, r := range testRunes {
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b := []byte(string(r))
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v, sz := testTrie.lookup(b)
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if int(v) != i {
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t.Errorf("lookup(%U): found value %#x, expected %#x", r, v, i)
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}
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if sz != len(b) {
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t.Errorf("lookup(%U): found size %d, expected %d", r, sz, len(b))
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}
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}
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for i, tt := range tests {
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v, sz := testTrie.lookup(tt.bytes)
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if int(v) != 0 {
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t.Errorf("lookup of illegal rune, case %d: found value %#x, expected 0", i, v)
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}
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if sz != tt.size {
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t.Errorf("lookup of illegal rune, case %d: found size %d, expected %d", i, sz, tt.size)
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}
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}
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}
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// test data is taken from exp/collate/locale/build/trie_test.go
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var testValues = [832]uint32{
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0x000c: 0x00000001,
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0x007f: 0x00000002,
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0x00c0: 0x00000003,
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0x0100: 0x00000004,
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0x0140: 0x0000000c, 0x0141: 0x0000000d, 0x0142: 0x0000000e,
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0x0150: 0x0000000f,
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0x0155: 0x00000010,
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0x01bf: 0x00000005,
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0x01c0: 0x00000006,
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0x0219: 0x00000007,
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0x027f: 0x00000008,
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0x0280: 0x00000009,
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0x02c1: 0x0000000a,
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0x033f: 0x0000000b,
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}
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var testLookup = [640]uint16{
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0x0e0: 0x05, 0x0e6: 0x06,
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0x13f: 0x07,
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0x140: 0x08, 0x144: 0x09,
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0x190: 0x03,
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0x1ff: 0x0a,
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0x20f: 0x05,
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0x242: 0x01, 0x244: 0x02,
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0x248: 0x03,
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0x25f: 0x04,
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0x260: 0x01,
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0x26f: 0x02,
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0x270: 0x04, 0x274: 0x06,
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}
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var testTrie = Trie{testLookup[6*blockSize:], testValues[:], testLookup[:], testValues[:]}
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