11cb0ef41Sopenharmony_ci'use strict';
21cb0ef41Sopenharmony_ci
31cb0ef41Sopenharmony_cirequire('../common');
41cb0ef41Sopenharmony_ciconst assert = require('assert');
51cb0ef41Sopenharmony_ci
61cb0ef41Sopenharmony_ci// Test buffers small enough to use the JS implementation
71cb0ef41Sopenharmony_ci{
81cb0ef41Sopenharmony_ci  const buf = Buffer.from([0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
91cb0ef41Sopenharmony_ci                           0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10]);
101cb0ef41Sopenharmony_ci
111cb0ef41Sopenharmony_ci  assert.strictEqual(buf, buf.swap16());
121cb0ef41Sopenharmony_ci  assert.deepStrictEqual(buf, Buffer.from([0x02, 0x01, 0x04, 0x03, 0x06, 0x05,
131cb0ef41Sopenharmony_ci                                           0x08, 0x07, 0x0a, 0x09, 0x0c, 0x0b,
141cb0ef41Sopenharmony_ci                                           0x0e, 0x0d, 0x10, 0x0f]));
151cb0ef41Sopenharmony_ci  buf.swap16(); // restore
161cb0ef41Sopenharmony_ci
171cb0ef41Sopenharmony_ci  assert.strictEqual(buf, buf.swap32());
181cb0ef41Sopenharmony_ci  assert.deepStrictEqual(buf, Buffer.from([0x04, 0x03, 0x02, 0x01, 0x08, 0x07,
191cb0ef41Sopenharmony_ci                                           0x06, 0x05, 0x0c, 0x0b, 0x0a, 0x09,
201cb0ef41Sopenharmony_ci                                           0x10, 0x0f, 0x0e, 0x0d]));
211cb0ef41Sopenharmony_ci  buf.swap32(); // restore
221cb0ef41Sopenharmony_ci
231cb0ef41Sopenharmony_ci  assert.strictEqual(buf, buf.swap64());
241cb0ef41Sopenharmony_ci  assert.deepStrictEqual(buf, Buffer.from([0x08, 0x07, 0x06, 0x05, 0x04, 0x03,
251cb0ef41Sopenharmony_ci                                           0x02, 0x01, 0x10, 0x0f, 0x0e, 0x0d,
261cb0ef41Sopenharmony_ci                                           0x0c, 0x0b, 0x0a, 0x09]));
271cb0ef41Sopenharmony_ci}
281cb0ef41Sopenharmony_ci
291cb0ef41Sopenharmony_ci// Operates in-place
301cb0ef41Sopenharmony_ci{
311cb0ef41Sopenharmony_ci  const buf = Buffer.from([0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7]);
321cb0ef41Sopenharmony_ci  buf.slice(1, 5).swap32();
331cb0ef41Sopenharmony_ci  assert.deepStrictEqual(buf, Buffer.from([0x1, 0x5, 0x4, 0x3, 0x2, 0x6, 0x7]));
341cb0ef41Sopenharmony_ci  buf.slice(1, 5).swap16();
351cb0ef41Sopenharmony_ci  assert.deepStrictEqual(buf, Buffer.from([0x1, 0x4, 0x5, 0x2, 0x3, 0x6, 0x7]));
361cb0ef41Sopenharmony_ci
371cb0ef41Sopenharmony_ci  // Length assertions
381cb0ef41Sopenharmony_ci  const re16 = /Buffer size must be a multiple of 16-bits/;
391cb0ef41Sopenharmony_ci  const re32 = /Buffer size must be a multiple of 32-bits/;
401cb0ef41Sopenharmony_ci  const re64 = /Buffer size must be a multiple of 64-bits/;
411cb0ef41Sopenharmony_ci
421cb0ef41Sopenharmony_ci  assert.throws(() => Buffer.from(buf).swap16(), re16);
431cb0ef41Sopenharmony_ci  assert.throws(() => Buffer.alloc(1025).swap16(), re16);
441cb0ef41Sopenharmony_ci  assert.throws(() => Buffer.from(buf).swap32(), re32);
451cb0ef41Sopenharmony_ci  assert.throws(() => buf.slice(1, 3).swap32(), re32);
461cb0ef41Sopenharmony_ci  assert.throws(() => Buffer.alloc(1025).swap32(), re32);
471cb0ef41Sopenharmony_ci  assert.throws(() => buf.slice(1, 3).swap64(), re64);
481cb0ef41Sopenharmony_ci  assert.throws(() => Buffer.alloc(1025).swap64(), re64);
491cb0ef41Sopenharmony_ci}
501cb0ef41Sopenharmony_ci
511cb0ef41Sopenharmony_ci{
521cb0ef41Sopenharmony_ci  const buf = Buffer.from([0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
531cb0ef41Sopenharmony_ci                           0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
541cb0ef41Sopenharmony_ci                           0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
551cb0ef41Sopenharmony_ci                           0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10]);
561cb0ef41Sopenharmony_ci
571cb0ef41Sopenharmony_ci  buf.slice(2, 18).swap64();
581cb0ef41Sopenharmony_ci
591cb0ef41Sopenharmony_ci  assert.deepStrictEqual(buf, Buffer.from([0x01, 0x02, 0x0a, 0x09, 0x08, 0x07,
601cb0ef41Sopenharmony_ci                                           0x06, 0x05, 0x04, 0x03, 0x02, 0x01,
611cb0ef41Sopenharmony_ci                                           0x10, 0x0f, 0x0e, 0x0d, 0x0c, 0x0b,
621cb0ef41Sopenharmony_ci                                           0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
631cb0ef41Sopenharmony_ci                                           0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e,
641cb0ef41Sopenharmony_ci                                           0x0f, 0x10]));
651cb0ef41Sopenharmony_ci}
661cb0ef41Sopenharmony_ci
671cb0ef41Sopenharmony_ci// Force use of native code (Buffer size above threshold limit for js impl)
681cb0ef41Sopenharmony_ci{
691cb0ef41Sopenharmony_ci  const bufData = new Uint32Array(256).fill(0x04030201);
701cb0ef41Sopenharmony_ci  const buf = Buffer.from(bufData.buffer, bufData.byteOffset);
711cb0ef41Sopenharmony_ci  const otherBufData = new Uint32Array(256).fill(0x03040102);
721cb0ef41Sopenharmony_ci  const otherBuf = Buffer.from(otherBufData.buffer, otherBufData.byteOffset);
731cb0ef41Sopenharmony_ci  buf.swap16();
741cb0ef41Sopenharmony_ci  assert.deepStrictEqual(buf, otherBuf);
751cb0ef41Sopenharmony_ci}
761cb0ef41Sopenharmony_ci
771cb0ef41Sopenharmony_ci{
781cb0ef41Sopenharmony_ci  const bufData = new Uint32Array(256).fill(0x04030201);
791cb0ef41Sopenharmony_ci  const buf = Buffer.from(bufData.buffer);
801cb0ef41Sopenharmony_ci  const otherBufData = new Uint32Array(256).fill(0x01020304);
811cb0ef41Sopenharmony_ci  const otherBuf = Buffer.from(otherBufData.buffer, otherBufData.byteOffset);
821cb0ef41Sopenharmony_ci  buf.swap32();
831cb0ef41Sopenharmony_ci  assert.deepStrictEqual(buf, otherBuf);
841cb0ef41Sopenharmony_ci}
851cb0ef41Sopenharmony_ci
861cb0ef41Sopenharmony_ci{
871cb0ef41Sopenharmony_ci  const bufData = new Uint8Array(256 * 8);
881cb0ef41Sopenharmony_ci  const otherBufData = new Uint8Array(256 * 8);
891cb0ef41Sopenharmony_ci  for (let i = 0; i < bufData.length; i++) {
901cb0ef41Sopenharmony_ci    bufData[i] = i % 8;
911cb0ef41Sopenharmony_ci    otherBufData[otherBufData.length - i - 1] = i % 8;
921cb0ef41Sopenharmony_ci  }
931cb0ef41Sopenharmony_ci  const buf = Buffer.from(bufData.buffer, bufData.byteOffset);
941cb0ef41Sopenharmony_ci  const otherBuf = Buffer.from(otherBufData.buffer, otherBufData.byteOffset);
951cb0ef41Sopenharmony_ci  buf.swap64();
961cb0ef41Sopenharmony_ci  assert.deepStrictEqual(buf, otherBuf);
971cb0ef41Sopenharmony_ci}
981cb0ef41Sopenharmony_ci
991cb0ef41Sopenharmony_ci// Test native code with buffers that are not memory-aligned
1001cb0ef41Sopenharmony_ci{
1011cb0ef41Sopenharmony_ci  const bufData = new Uint8Array(256 * 8);
1021cb0ef41Sopenharmony_ci  const otherBufData = new Uint8Array(256 * 8 - 2);
1031cb0ef41Sopenharmony_ci  for (let i = 0; i < bufData.length; i++) {
1041cb0ef41Sopenharmony_ci    bufData[i] = i % 2;
1051cb0ef41Sopenharmony_ci  }
1061cb0ef41Sopenharmony_ci  for (let i = 1; i < otherBufData.length; i++) {
1071cb0ef41Sopenharmony_ci    otherBufData[otherBufData.length - i] = (i + 1) % 2;
1081cb0ef41Sopenharmony_ci  }
1091cb0ef41Sopenharmony_ci  const buf = Buffer.from(bufData.buffer, bufData.byteOffset);
1101cb0ef41Sopenharmony_ci  // 0|1 0|1 0|1...
1111cb0ef41Sopenharmony_ci  const otherBuf = Buffer.from(otherBufData.buffer, otherBufData.byteOffset);
1121cb0ef41Sopenharmony_ci  // 0|0 1|0 1|0...
1131cb0ef41Sopenharmony_ci
1141cb0ef41Sopenharmony_ci  buf.slice(1, buf.length - 1).swap16();
1151cb0ef41Sopenharmony_ci  assert.deepStrictEqual(buf.slice(0, otherBuf.length), otherBuf);
1161cb0ef41Sopenharmony_ci}
1171cb0ef41Sopenharmony_ci
1181cb0ef41Sopenharmony_ci{
1191cb0ef41Sopenharmony_ci  const bufData = new Uint8Array(256 * 8);
1201cb0ef41Sopenharmony_ci  const otherBufData = new Uint8Array(256 * 8 - 4);
1211cb0ef41Sopenharmony_ci  for (let i = 0; i < bufData.length; i++) {
1221cb0ef41Sopenharmony_ci    bufData[i] = i % 4;
1231cb0ef41Sopenharmony_ci  }
1241cb0ef41Sopenharmony_ci  for (let i = 1; i < otherBufData.length; i++) {
1251cb0ef41Sopenharmony_ci    otherBufData[otherBufData.length - i] = (i + 1) % 4;
1261cb0ef41Sopenharmony_ci  }
1271cb0ef41Sopenharmony_ci  const buf = Buffer.from(bufData.buffer, bufData.byteOffset);
1281cb0ef41Sopenharmony_ci  // 0|1 2 3 0|1 2 3...
1291cb0ef41Sopenharmony_ci  const otherBuf = Buffer.from(otherBufData.buffer, otherBufData.byteOffset);
1301cb0ef41Sopenharmony_ci  // 0|0 3 2 1|0 3 2...
1311cb0ef41Sopenharmony_ci
1321cb0ef41Sopenharmony_ci  buf.slice(1, buf.length - 3).swap32();
1331cb0ef41Sopenharmony_ci  assert.deepStrictEqual(buf.slice(0, otherBuf.length), otherBuf);
1341cb0ef41Sopenharmony_ci}
1351cb0ef41Sopenharmony_ci
1361cb0ef41Sopenharmony_ci{
1371cb0ef41Sopenharmony_ci  const bufData = new Uint8Array(256 * 8);
1381cb0ef41Sopenharmony_ci  const otherBufData = new Uint8Array(256 * 8 - 8);
1391cb0ef41Sopenharmony_ci  for (let i = 0; i < bufData.length; i++) {
1401cb0ef41Sopenharmony_ci    bufData[i] = i % 8;
1411cb0ef41Sopenharmony_ci  }
1421cb0ef41Sopenharmony_ci  for (let i = 1; i < otherBufData.length; i++) {
1431cb0ef41Sopenharmony_ci    otherBufData[otherBufData.length - i] = (i + 1) % 8;
1441cb0ef41Sopenharmony_ci  }
1451cb0ef41Sopenharmony_ci  const buf = Buffer.from(bufData.buffer, bufData.byteOffset);
1461cb0ef41Sopenharmony_ci  // 0|1 2 3 4 5 6 7 0|1 2 3 4...
1471cb0ef41Sopenharmony_ci  const otherBuf = Buffer.from(otherBufData.buffer, otherBufData.byteOffset);
1481cb0ef41Sopenharmony_ci  // 0|0 7 6 5 4 3 2 1|0 7 6 5...
1491cb0ef41Sopenharmony_ci
1501cb0ef41Sopenharmony_ci  buf.slice(1, buf.length - 7).swap64();
1511cb0ef41Sopenharmony_ci  assert.deepStrictEqual(buf.slice(0, otherBuf.length), otherBuf);
1521cb0ef41Sopenharmony_ci}
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