536 lines
12 KiB
Go
536 lines
12 KiB
Go
// Copyright 2009 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 unicode_test
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import (
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"flag"
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"fmt"
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"runtime"
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"sort"
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"testing"
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. "unicode"
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)
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var upperTest = []rune{
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0x41,
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0xc0,
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0xd8,
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0x100,
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0x139,
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0x14a,
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0x178,
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0x181,
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0x376,
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0x3cf,
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0x1f2a,
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0x2102,
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0x2c00,
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0x2c10,
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0x2c20,
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0xa650,
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0xa722,
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0xff3a,
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0x10400,
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0x1d400,
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0x1d7ca,
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}
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var notupperTest = []rune{
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0x40,
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0x5b,
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0x61,
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0x185,
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0x1b0,
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0x377,
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0x387,
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0x2150,
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0xffff,
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0x10000,
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}
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var letterTest = []rune{
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0x41,
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0x61,
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0xaa,
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0xba,
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0xc8,
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0xdb,
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0xf9,
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0x2ec,
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0x535,
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0x620,
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0x6e6,
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0x93d,
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0xa15,
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0xb99,
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0xdc0,
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0xedd,
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0x1000,
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0x1200,
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0x1312,
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0x1401,
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0x1885,
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0x2c00,
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0xa800,
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0xf900,
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0xfa30,
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0xffda,
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0xffdc,
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0x10000,
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0x10300,
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0x10400,
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0x20000,
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0x2f800,
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0x2fa1d,
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}
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var notletterTest = []rune{
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0x20,
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0x35,
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0x375,
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0x619,
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0x700,
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0xfffe,
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0x1ffff,
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0x10ffff,
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}
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// Contains all the special cased Latin-1 chars.
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var spaceTest = []rune{
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0x09,
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0x0a,
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0x0b,
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0x0c,
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0x0d,
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0x20,
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0x85,
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0xA0,
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0x2000,
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0x3000,
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}
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type caseT struct {
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cas int
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in, out rune
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}
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var caseTest = []caseT{
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// errors
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{-1, '\n', 0xFFFD},
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{UpperCase, -1, -1},
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{UpperCase, 1 << 30, 1 << 30},
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// ASCII (special-cased so test carefully)
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{UpperCase, '\n', '\n'},
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{UpperCase, 'a', 'A'},
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{UpperCase, 'A', 'A'},
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{UpperCase, '7', '7'},
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{LowerCase, '\n', '\n'},
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{LowerCase, 'a', 'a'},
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{LowerCase, 'A', 'a'},
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{LowerCase, '7', '7'},
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{TitleCase, '\n', '\n'},
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{TitleCase, 'a', 'A'},
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{TitleCase, 'A', 'A'},
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{TitleCase, '7', '7'},
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// Latin-1: easy to read the tests!
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{UpperCase, 0x80, 0x80},
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{UpperCase, 'Å', 'Å'},
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{UpperCase, 'å', 'Å'},
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{LowerCase, 0x80, 0x80},
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{LowerCase, 'Å', 'å'},
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{LowerCase, 'å', 'å'},
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{TitleCase, 0x80, 0x80},
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{TitleCase, 'Å', 'Å'},
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{TitleCase, 'å', 'Å'},
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// 0131;LATIN SMALL LETTER DOTLESS I;Ll;0;L;;;;;N;;;0049;;0049
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{UpperCase, 0x0131, 'I'},
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{LowerCase, 0x0131, 0x0131},
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{TitleCase, 0x0131, 'I'},
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// 0133;LATIN SMALL LIGATURE IJ;Ll;0;L;<compat> 0069 006A;;;;N;LATIN SMALL LETTER I J;;0132;;0132
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{UpperCase, 0x0133, 0x0132},
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{LowerCase, 0x0133, 0x0133},
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{TitleCase, 0x0133, 0x0132},
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// 212A;KELVIN SIGN;Lu;0;L;004B;;;;N;DEGREES KELVIN;;;006B;
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{UpperCase, 0x212A, 0x212A},
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{LowerCase, 0x212A, 'k'},
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{TitleCase, 0x212A, 0x212A},
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// From an UpperLower sequence
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// A640;CYRILLIC CAPITAL LETTER ZEMLYA;Lu;0;L;;;;;N;;;;A641;
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{UpperCase, 0xA640, 0xA640},
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{LowerCase, 0xA640, 0xA641},
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{TitleCase, 0xA640, 0xA640},
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// A641;CYRILLIC SMALL LETTER ZEMLYA;Ll;0;L;;;;;N;;;A640;;A640
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{UpperCase, 0xA641, 0xA640},
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{LowerCase, 0xA641, 0xA641},
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{TitleCase, 0xA641, 0xA640},
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// A64E;CYRILLIC CAPITAL LETTER NEUTRAL YER;Lu;0;L;;;;;N;;;;A64F;
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{UpperCase, 0xA64E, 0xA64E},
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{LowerCase, 0xA64E, 0xA64F},
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{TitleCase, 0xA64E, 0xA64E},
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// A65F;CYRILLIC SMALL LETTER YN;Ll;0;L;;;;;N;;;A65E;;A65E
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{UpperCase, 0xA65F, 0xA65E},
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{LowerCase, 0xA65F, 0xA65F},
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{TitleCase, 0xA65F, 0xA65E},
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// From another UpperLower sequence
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// 0139;LATIN CAPITAL LETTER L WITH ACUTE;Lu;0;L;004C 0301;;;;N;LATIN CAPITAL LETTER L ACUTE;;;013A;
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{UpperCase, 0x0139, 0x0139},
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{LowerCase, 0x0139, 0x013A},
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{TitleCase, 0x0139, 0x0139},
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// 013F;LATIN CAPITAL LETTER L WITH MIDDLE DOT;Lu;0;L;<compat> 004C 00B7;;;;N;;;;0140;
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{UpperCase, 0x013f, 0x013f},
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{LowerCase, 0x013f, 0x0140},
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{TitleCase, 0x013f, 0x013f},
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// 0148;LATIN SMALL LETTER N WITH CARON;Ll;0;L;006E 030C;;;;N;LATIN SMALL LETTER N HACEK;;0147;;0147
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{UpperCase, 0x0148, 0x0147},
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{LowerCase, 0x0148, 0x0148},
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{TitleCase, 0x0148, 0x0147},
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// Last block in the 5.1.0 table
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// 10400;DESERET CAPITAL LETTER LONG I;Lu;0;L;;;;;N;;;;10428;
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{UpperCase, 0x10400, 0x10400},
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{LowerCase, 0x10400, 0x10428},
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{TitleCase, 0x10400, 0x10400},
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// 10427;DESERET CAPITAL LETTER EW;Lu;0;L;;;;;N;;;;1044F;
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{UpperCase, 0x10427, 0x10427},
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{LowerCase, 0x10427, 0x1044F},
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{TitleCase, 0x10427, 0x10427},
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// 10428;DESERET SMALL LETTER LONG I;Ll;0;L;;;;;N;;;10400;;10400
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{UpperCase, 0x10428, 0x10400},
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{LowerCase, 0x10428, 0x10428},
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{TitleCase, 0x10428, 0x10400},
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// 1044F;DESERET SMALL LETTER EW;Ll;0;L;;;;;N;;;10427;;10427
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{UpperCase, 0x1044F, 0x10427},
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{LowerCase, 0x1044F, 0x1044F},
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{TitleCase, 0x1044F, 0x10427},
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// First one not in the 5.1.0 table
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// 10450;SHAVIAN LETTER PEEP;Lo;0;L;;;;;N;;;;;
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{UpperCase, 0x10450, 0x10450},
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{LowerCase, 0x10450, 0x10450},
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{TitleCase, 0x10450, 0x10450},
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// Non-letters with case.
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{LowerCase, 0x2161, 0x2171},
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{UpperCase, 0x0345, 0x0399},
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}
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func TestIsLetter(t *testing.T) {
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for _, r := range upperTest {
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if !IsLetter(r) {
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t.Errorf("IsLetter(U+%04X) = false, want true", r)
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}
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}
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for _, r := range letterTest {
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if !IsLetter(r) {
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t.Errorf("IsLetter(U+%04X) = false, want true", r)
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}
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}
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for _, r := range notletterTest {
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if IsLetter(r) {
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t.Errorf("IsLetter(U+%04X) = true, want false", r)
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}
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}
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}
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func TestIsUpper(t *testing.T) {
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for _, r := range upperTest {
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if !IsUpper(r) {
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t.Errorf("IsUpper(U+%04X) = false, want true", r)
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}
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}
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for _, r := range notupperTest {
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if IsUpper(r) {
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t.Errorf("IsUpper(U+%04X) = true, want false", r)
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}
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}
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for _, r := range notletterTest {
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if IsUpper(r) {
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t.Errorf("IsUpper(U+%04X) = true, want false", r)
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}
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}
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}
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func caseString(c int) string {
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switch c {
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case UpperCase:
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return "UpperCase"
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case LowerCase:
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return "LowerCase"
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case TitleCase:
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return "TitleCase"
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}
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return "ErrorCase"
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}
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func TestTo(t *testing.T) {
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for _, c := range caseTest {
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r := To(c.cas, c.in)
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if c.out != r {
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t.Errorf("To(U+%04X, %s) = U+%04X want U+%04X", c.in, caseString(c.cas), r, c.out)
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}
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}
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}
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func TestToUpperCase(t *testing.T) {
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for _, c := range caseTest {
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if c.cas != UpperCase {
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continue
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}
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r := ToUpper(c.in)
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if c.out != r {
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t.Errorf("ToUpper(U+%04X) = U+%04X want U+%04X", c.in, r, c.out)
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}
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}
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}
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func TestToLowerCase(t *testing.T) {
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for _, c := range caseTest {
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if c.cas != LowerCase {
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continue
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}
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r := ToLower(c.in)
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if c.out != r {
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t.Errorf("ToLower(U+%04X) = U+%04X want U+%04X", c.in, r, c.out)
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}
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}
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}
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func TestToTitleCase(t *testing.T) {
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for _, c := range caseTest {
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if c.cas != TitleCase {
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continue
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}
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r := ToTitle(c.in)
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if c.out != r {
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t.Errorf("ToTitle(U+%04X) = U+%04X want U+%04X", c.in, r, c.out)
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}
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}
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}
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func TestIsSpace(t *testing.T) {
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for _, c := range spaceTest {
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if !IsSpace(c) {
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t.Errorf("IsSpace(U+%04X) = false; want true", c)
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}
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}
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for _, c := range letterTest {
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if IsSpace(c) {
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t.Errorf("IsSpace(U+%04X) = true; want false", c)
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}
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}
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}
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// Check that the optimizations for IsLetter etc. agree with the tables.
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// We only need to check the Latin-1 range.
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func TestLetterOptimizations(t *testing.T) {
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for i := rune(0); i <= MaxLatin1; i++ {
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if Is(Letter, i) != IsLetter(i) {
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t.Errorf("IsLetter(U+%04X) disagrees with Is(Letter)", i)
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}
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if Is(Upper, i) != IsUpper(i) {
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t.Errorf("IsUpper(U+%04X) disagrees with Is(Upper)", i)
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}
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if Is(Lower, i) != IsLower(i) {
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t.Errorf("IsLower(U+%04X) disagrees with Is(Lower)", i)
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}
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if Is(Title, i) != IsTitle(i) {
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t.Errorf("IsTitle(U+%04X) disagrees with Is(Title)", i)
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}
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if Is(White_Space, i) != IsSpace(i) {
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t.Errorf("IsSpace(U+%04X) disagrees with Is(White_Space)", i)
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}
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if To(UpperCase, i) != ToUpper(i) {
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t.Errorf("ToUpper(U+%04X) disagrees with To(Upper)", i)
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}
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if To(LowerCase, i) != ToLower(i) {
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t.Errorf("ToLower(U+%04X) disagrees with To(Lower)", i)
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}
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if To(TitleCase, i) != ToTitle(i) {
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t.Errorf("ToTitle(U+%04X) disagrees with To(Title)", i)
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}
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}
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}
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func TestTurkishCase(t *testing.T) {
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lower := []rune("abcçdefgğhıijklmnoöprsştuüvyz")
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upper := []rune("ABCÇDEFGĞHIİJKLMNOÖPRSŞTUÜVYZ")
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for i, l := range lower {
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u := upper[i]
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if TurkishCase.ToLower(l) != l {
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t.Errorf("lower(U+%04X) is U+%04X not U+%04X", l, TurkishCase.ToLower(l), l)
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}
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if TurkishCase.ToUpper(u) != u {
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t.Errorf("upper(U+%04X) is U+%04X not U+%04X", u, TurkishCase.ToUpper(u), u)
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}
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if TurkishCase.ToUpper(l) != u {
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t.Errorf("upper(U+%04X) is U+%04X not U+%04X", l, TurkishCase.ToUpper(l), u)
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}
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if TurkishCase.ToLower(u) != l {
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t.Errorf("lower(U+%04X) is U+%04X not U+%04X", u, TurkishCase.ToLower(l), l)
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}
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if TurkishCase.ToTitle(u) != u {
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t.Errorf("title(U+%04X) is U+%04X not U+%04X", u, TurkishCase.ToTitle(u), u)
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}
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if TurkishCase.ToTitle(l) != u {
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t.Errorf("title(U+%04X) is U+%04X not U+%04X", l, TurkishCase.ToTitle(l), u)
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}
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}
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}
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var simpleFoldTests = []string{
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// SimpleFold(x) returns the next equivalent rune > x or wraps
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// around to smaller values.
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// Easy cases.
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"Aa",
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"δΔ",
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// ASCII special cases.
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"KkK",
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"Ssſ",
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// Non-ASCII special cases.
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"ρϱΡ",
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"ͅΙιι",
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// Extra special cases: has lower/upper but no case fold.
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"İ",
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"ı",
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}
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func TestSimpleFold(t *testing.T) {
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for _, tt := range simpleFoldTests {
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cycle := []rune(tt)
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r := cycle[len(cycle)-1]
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for _, out := range cycle {
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if r := SimpleFold(r); r != out {
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t.Errorf("SimpleFold(%#U) = %#U, want %#U", r, r, out)
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}
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r = out
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}
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}
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}
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// Running 'go test -calibrate' runs the calibration to find a plausible
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// cutoff point for linear search of a range list vs. binary search.
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// We create a fake table and then time how long it takes to do a
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// sequence of searches within that table, for all possible inputs
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// relative to the ranges (something before all, in each, between each, after all).
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// This assumes that all possible runes are equally likely.
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// In practice most runes are ASCII so this is a conservative estimate
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// of an effective cutoff value. In practice we could probably set it higher
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// than what this function recommends.
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var calibrate = flag.Bool("calibrate", false, "compute crossover for linear vs. binary search")
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func TestCalibrate(t *testing.T) {
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if !*calibrate {
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return
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}
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if runtime.GOARCH == "amd64" {
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fmt.Printf("warning: running calibration on %s\n", runtime.GOARCH)
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}
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// Find the point where binary search wins by more than 10%.
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// The 10% bias gives linear search an edge when they're close,
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// because on predominantly ASCII inputs linear search is even
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// better than our benchmarks measure.
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n := sort.Search(64, func(n int) bool {
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tab := fakeTable(n)
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blinear := func(b *testing.B) {
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tab := tab
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max := n*5 + 20
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for i := 0; i < b.N; i++ {
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for j := 0; j <= max; j++ {
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linear(tab, uint16(j))
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}
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}
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}
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bbinary := func(b *testing.B) {
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tab := tab
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max := n*5 + 20
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for i := 0; i < b.N; i++ {
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for j := 0; j <= max; j++ {
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binary(tab, uint16(j))
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}
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}
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}
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bmlinear := testing.Benchmark(blinear)
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bmbinary := testing.Benchmark(bbinary)
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fmt.Printf("n=%d: linear=%d binary=%d\n", n, bmlinear.NsPerOp(), bmbinary.NsPerOp())
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return bmlinear.NsPerOp()*100 > bmbinary.NsPerOp()*110
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})
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fmt.Printf("calibration: linear cutoff = %d\n", n)
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}
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func fakeTable(n int) []Range16 {
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var r16 []Range16
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for i := 0; i < n; i++ {
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r16 = append(r16, Range16{uint16(i*5 + 10), uint16(i*5 + 12), 1})
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}
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return r16
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}
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func linear(ranges []Range16, r uint16) bool {
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for i := range ranges {
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range_ := &ranges[i]
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if r < range_.Lo {
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return false
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}
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if r <= range_.Hi {
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return (r-range_.Lo)%range_.Stride == 0
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}
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}
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return false
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}
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func binary(ranges []Range16, r uint16) bool {
|
||
// binary search over ranges
|
||
lo := 0
|
||
hi := len(ranges)
|
||
for lo < hi {
|
||
m := lo + (hi-lo)/2
|
||
range_ := &ranges[m]
|
||
if range_.Lo <= r && r <= range_.Hi {
|
||
return (r-range_.Lo)%range_.Stride == 0
|
||
}
|
||
if r < range_.Lo {
|
||
hi = m
|
||
} else {
|
||
lo = m + 1
|
||
}
|
||
}
|
||
return false
|
||
}
|
||
|
||
func TestLatinOffset(t *testing.T) {
|
||
var maps = []map[string]*RangeTable{
|
||
Categories,
|
||
FoldCategory,
|
||
FoldScript,
|
||
Properties,
|
||
Scripts,
|
||
}
|
||
for _, m := range maps {
|
||
for name, tab := range m {
|
||
i := 0
|
||
for i < len(tab.R16) && tab.R16[i].Hi <= MaxLatin1 {
|
||
i++
|
||
}
|
||
if tab.LatinOffset != i {
|
||
t.Errorf("%s: LatinOffset=%d, want %d", name, tab.LatinOffset, i)
|
||
}
|
||
}
|
||
}
|
||
}
|