| 'use strict'; |
| var Buffer = require('../../').Buffer; |
| |
| |
| var assert = require('assert'); |
| |
| var Buffer = require('../../').Buffer; |
| |
| var b = Buffer.from('abcdef'); |
| var buf_a = Buffer.from('a'); |
| var buf_bc = Buffer.from('bc'); |
| var buf_f = Buffer.from('f'); |
| var buf_z = Buffer.from('z'); |
| var buf_empty = Buffer.from(''); |
| |
| assert(b.includes('a')); |
| assert(!b.includes('a', 1)); |
| assert(!b.includes('a', -1)); |
| assert(!b.includes('a', -4)); |
| assert(b.includes('a', -b.length)); |
| assert(b.includes('a', NaN)); |
| assert(b.includes('a', -Infinity)); |
| assert(!b.includes('a', Infinity)); |
| assert(b.includes('bc')); |
| assert(!b.includes('bc', 2)); |
| assert(!b.includes('bc', -1)); |
| assert(!b.includes('bc', -3)); |
| assert(b.includes('bc', -5)); |
| assert(b.includes('bc', NaN)); |
| assert(b.includes('bc', -Infinity)); |
| assert(!b.includes('bc', Infinity)); |
| assert(b.includes('f'), b.length - 1); |
| assert(!b.includes('z')); |
| assert(!b.includes('')); |
| assert(!b.includes('', 1)); |
| assert(!b.includes('', b.length + 1)); |
| assert(!b.includes('', Infinity)); |
| assert(b.includes(buf_a)); |
| assert(!b.includes(buf_a, 1)); |
| assert(!b.includes(buf_a, -1)); |
| assert(!b.includes(buf_a, -4)); |
| assert(b.includes(buf_a, -b.length)); |
| assert(b.includes(buf_a, NaN)); |
| assert(b.includes(buf_a, -Infinity)); |
| assert(!b.includes(buf_a, Infinity)); |
| assert(b.includes(buf_bc)); |
| assert(!b.includes(buf_bc, 2)); |
| assert(!b.includes(buf_bc, -1)); |
| assert(!b.includes(buf_bc, -3)); |
| assert(b.includes(buf_bc, -5)); |
| assert(b.includes(buf_bc, NaN)); |
| assert(b.includes(buf_bc, -Infinity)); |
| assert(!b.includes(buf_bc, Infinity)); |
| assert(b.includes(buf_f), b.length - 1); |
| assert(!b.includes(buf_z)); |
| assert(!b.includes(buf_empty)); |
| assert(!b.includes(buf_empty, 1)); |
| assert(!b.includes(buf_empty, b.length + 1)); |
| assert(!b.includes(buf_empty, Infinity)); |
| assert(b.includes(0x61)); |
| assert(!b.includes(0x61, 1)); |
| assert(!b.includes(0x61, -1)); |
| assert(!b.includes(0x61, -4)); |
| assert(b.includes(0x61, -b.length)); |
| assert(b.includes(0x61, NaN)); |
| assert(b.includes(0x61, -Infinity)); |
| assert(!b.includes(0x61, Infinity)); |
| assert(!b.includes(0x0)); |
| |
| // test offsets |
| assert(b.includes('d', 2)); |
| assert(b.includes('f', 5)); |
| assert(b.includes('f', -1)); |
| assert(!b.includes('f', 6)); |
| |
| assert(b.includes(Buffer.from('d'), 2)); |
| assert(b.includes(Buffer.from('f'), 5)); |
| assert(b.includes(Buffer.from('f'), -1)); |
| assert(!b.includes(Buffer.from('f'), 6)); |
| |
| assert(!Buffer.from('ff').includes(Buffer.from('f'), 1, 'ucs2')); |
| |
| // test hex encoding |
| assert.strictEqual( |
| Buffer.from(b.toString('hex'), 'hex') |
| .includes('64', 0, 'hex'), |
| true |
| ); |
| assert.strictEqual( |
| Buffer.from(b.toString('hex'), 'hex') |
| .includes(Buffer.from('64', 'hex'), 0, 'hex'), |
| true |
| ); |
| |
| // test base64 encoding |
| assert.strictEqual( |
| Buffer.from(b.toString('base64'), 'base64') |
| .includes('ZA==', 0, 'base64'), |
| true |
| ); |
| assert.strictEqual( |
| Buffer.from(b.toString('base64'), 'base64') |
| .includes(Buffer.from('ZA==', 'base64'), 0, 'base64'), |
| true |
| ); |
| |
| // test ascii encoding |
| assert.strictEqual( |
| Buffer.from(b.toString('ascii'), 'ascii') |
| .includes('d', 0, 'ascii'), |
| true |
| ); |
| assert.strictEqual( |
| Buffer.from(b.toString('ascii'), 'ascii') |
| .includes(Buffer.from('d', 'ascii'), 0, 'ascii'), |
| true |
| ); |
| |
| // test latin1 encoding |
| assert.strictEqual( |
| Buffer.from(b.toString('latin1'), 'latin1') |
| .includes('d', 0, 'latin1'), |
| true |
| ); |
| assert.strictEqual( |
| Buffer.from(b.toString('latin1'), 'latin1') |
| .includes(Buffer.from('d', 'latin1'), 0, 'latin1'), |
| true |
| ); |
| |
| // test binary encoding |
| assert.strictEqual( |
| Buffer.from(b.toString('binary'), 'binary') |
| .includes('d', 0, 'binary'), |
| true |
| ); |
| assert.strictEqual( |
| Buffer.from(b.toString('binary'), 'binary') |
| .includes(Buffer.from('d', 'binary'), 0, 'binary'), |
| true |
| ); |
| |
| |
| // test usc2 encoding |
| var twoByteString = Buffer.from('\u039a\u0391\u03a3\u03a3\u0395', 'ucs2'); |
| |
| assert(twoByteString.includes('\u0395', 4, 'ucs2')); |
| assert(twoByteString.includes('\u03a3', -4, 'ucs2')); |
| assert(twoByteString.includes('\u03a3', -6, 'ucs2')); |
| assert(twoByteString.includes( |
| Buffer.from('\u03a3', 'ucs2'), -6, 'ucs2')); |
| assert(!twoByteString.includes('\u03a3', -2, 'ucs2')); |
| |
| var mixedByteStringUcs2 = |
| Buffer.from('\u039a\u0391abc\u03a3\u03a3\u0395', 'ucs2'); |
| assert(mixedByteStringUcs2.includes('bc', 0, 'ucs2')); |
| assert(mixedByteStringUcs2.includes('\u03a3', 0, 'ucs2')); |
| assert(!mixedByteStringUcs2.includes('\u0396', 0, 'ucs2')); |
| |
| assert( |
| 6, mixedByteStringUcs2.includes(Buffer.from('bc', 'ucs2'), 0, 'ucs2')); |
| assert( |
| 10, mixedByteStringUcs2.includes(Buffer.from('\u03a3', 'ucs2'), |
| 0, 'ucs2')); |
| assert( |
| -1, mixedByteStringUcs2.includes(Buffer.from('\u0396', 'ucs2'), |
| 0, 'ucs2')); |
| |
| twoByteString = Buffer.from('\u039a\u0391\u03a3\u03a3\u0395', 'ucs2'); |
| |
| // Test single char pattern |
| assert(twoByteString.includes('\u039a', 0, 'ucs2')); |
| assert(twoByteString.includes('\u0391', 0, 'ucs2'), 'Alpha'); |
| assert(twoByteString.includes('\u03a3', 0, 'ucs2'), 'First Sigma'); |
| assert(twoByteString.includes('\u03a3', 6, 'ucs2'), 'Second Sigma'); |
| assert(twoByteString.includes('\u0395', 0, 'ucs2'), 'Epsilon'); |
| assert(!twoByteString.includes('\u0392', 0, 'ucs2'), 'Not beta'); |
| |
| // Test multi-char pattern |
| assert(twoByteString.includes('\u039a\u0391', 0, 'ucs2'), 'Lambda Alpha'); |
| assert(twoByteString.includes('\u0391\u03a3', 0, 'ucs2'), 'Alpha Sigma'); |
| assert(twoByteString.includes('\u03a3\u03a3', 0, 'ucs2'), 'Sigma Sigma'); |
| assert(twoByteString.includes('\u03a3\u0395', 0, 'ucs2'), 'Sigma Epsilon'); |
| |
| var mixedByteStringUtf8 = Buffer.from('\u039a\u0391abc\u03a3\u03a3\u0395'); |
| assert(mixedByteStringUtf8.includes('bc')); |
| assert(mixedByteStringUtf8.includes('bc', 5)); |
| assert(mixedByteStringUtf8.includes('bc', -8)); |
| assert(mixedByteStringUtf8.includes('\u03a3')); |
| assert(!mixedByteStringUtf8.includes('\u0396')); |
| |
| |
| // Test complex string includes algorithms. Only trigger for long strings. |
| // Long string that isn't a simple repeat of a shorter string. |
| var longString = 'A'; |
| for (var i = 66; i < 76; i++) { // from 'B' to 'K' |
| longString = longString + String.fromCharCode(i) + longString; |
| } |
| |
| var longBufferString = Buffer.from(longString); |
| |
| // pattern of 15 chars, repeated every 16 chars in long |
| var pattern = 'ABACABADABACABA'; |
| for (var i = 0; i < longBufferString.length - pattern.length; i += 7) { |
| var includes = longBufferString.includes(pattern, i); |
| assert(includes, 'Long ABACABA...-string at index ' + i); |
| } |
| assert(longBufferString.includes('AJABACA'), 'Long AJABACA, First J'); |
| assert(longBufferString.includes('AJABACA', 511), 'Long AJABACA, Second J'); |
| |
| pattern = 'JABACABADABACABA'; |
| assert(longBufferString.includes(pattern), 'Long JABACABA..., First J'); |
| assert(longBufferString.includes(pattern, 512), 'Long JABACABA..., Second J'); |
| |
| // Search for a non-ASCII string in a pure ASCII string. |
| var asciiString = Buffer.from( |
| 'arglebargleglopglyfarglebargleglopglyfarglebargleglopglyf'); |
| assert(!asciiString.includes('\x2061')); |
| assert(asciiString.includes('leb', 0)); |
| |
| // Search in string containing many non-ASCII chars. |
| var allCodePoints = []; |
| for (var i = 0; i < 65536; i++) allCodePoints[i] = i; |
| var allCharsString = String.fromCharCode.apply(String, allCodePoints); |
| var allCharsBufferUtf8 = Buffer.from(allCharsString); |
| var allCharsBufferUcs2 = Buffer.from(allCharsString, 'ucs2'); |
| |
| // Search for string long enough to trigger complex search with ASCII pattern |
| // and UC16 subject. |
| assert(!allCharsBufferUtf8.includes('notfound')); |
| assert(!allCharsBufferUcs2.includes('notfound')); |
| |
| // Find substrings in Utf8. |
| var lengths = [1, 3, 15]; // Single char, simple and complex. |
| var indices = [0x5, 0x60, 0x400, 0x680, 0x7ee, 0xFF02, 0x16610, 0x2f77b]; |
| for (var lengthIndex = 0; lengthIndex < lengths.length; lengthIndex++) { |
| for (var i = 0; i < indices.length; i++) { |
| var index = indices[i]; |
| var length = lengths[lengthIndex]; |
| |
| if (index + length > 0x7F) { |
| length = 2 * length; |
| } |
| |
| if (index + length > 0x7FF) { |
| length = 3 * length; |
| } |
| |
| if (index + length > 0xFFFF) { |
| length = 4 * length; |
| } |
| |
| var patternBufferUtf8 = allCharsBufferUtf8.slice(index, index + length); |
| assert(index, allCharsBufferUtf8.includes(patternBufferUtf8)); |
| |
| var patternStringUtf8 = patternBufferUtf8.toString(); |
| assert(index, allCharsBufferUtf8.includes(patternStringUtf8)); |
| } |
| } |
| |
| // Find substrings in Usc2. |
| lengths = [2, 4, 16]; // Single char, simple and complex. |
| indices = [0x5, 0x65, 0x105, 0x205, 0x285, 0x2005, 0x2085, 0xfff0]; |
| for (var lengthIndex = 0; lengthIndex < lengths.length; lengthIndex++) { |
| for (var i = 0; i < indices.length; i++) { |
| var index = indices[i] * 2; |
| var length = lengths[lengthIndex]; |
| |
| var patternBufferUcs2 = |
| allCharsBufferUcs2.slice(index, index + length); |
| assert( |
| index, allCharsBufferUcs2.includes(patternBufferUcs2, 0, 'ucs2')); |
| |
| var patternStringUcs2 = patternBufferUcs2.toString('ucs2'); |
| assert( |
| index, allCharsBufferUcs2.includes(patternStringUcs2, 0, 'ucs2')); |
| } |
| } |
| |
| assert.throws(function() { |
| b.includes(function() { }); |
| }); |
| assert.throws(function() { |
| b.includes({}); |
| }); |
| assert.throws(function() { |
| b.includes([]); |
| }); |
| |
| // test truncation of Number arguments to uint8 |
| { |
| var buf = Buffer.from('this is a test'); |
| assert.ok(buf.includes(0x6973)); |
| assert.ok(buf.includes(0x697320)); |
| assert.ok(buf.includes(0x69732069)); |
| assert.ok(buf.includes(0x697374657374)); |
| assert.ok(buf.includes(0x69737374)); |
| assert.ok(buf.includes(0x69737465)); |
| assert.ok(buf.includes(0x69737465)); |
| assert.ok(buf.includes(-140)); |
| assert.ok(buf.includes(-152)); |
| assert.ok(!buf.includes(0xff)); |
| assert.ok(!buf.includes(0xffff)); |
| } |
| |