| // Copyright Joyent, Inc. and other Node contributors. |
| // |
| // Permission is hereby granted, free of charge, to any person obtaining a |
| // copy of this software and associated documentation files (the |
| // "Software"), to deal in the Software without restriction, including |
| // without limitation the rights to use, copy, modify, merge, publish, |
| // distribute, sublicense, and/or sell copies of the Software, and to permit |
| // persons to whom the Software is furnished to do so, subject to the |
| // following conditions: |
| // |
| // The above copyright notice and this permission notice shall be included |
| // in all copies or substantial portions of the Software. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN |
| // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
| // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| // USE OR OTHER DEALINGS IN THE SOFTWARE. |
| |
| /* |
| * Tests to verify we're reading in signed integers correctly |
| */ |
| var SlowBuffer = process.binding('buffer').SlowBuffer; |
| var common = require('../common'); |
| var ASSERT = require('assert'); |
| |
| /* |
| * Test 8 bit signed integers |
| */ |
| function test8(clazz) { |
| var data = new clazz(4); |
| |
| data[0] = 0x23; |
| ASSERT.equal(0x23, data.readInt8(0)); |
| |
| data[0] = 0xff; |
| ASSERT.equal(-1, data.readInt8(0)); |
| |
| data[0] = 0x87; |
| data[1] = 0xab; |
| data[2] = 0x7c; |
| data[3] = 0xef; |
| ASSERT.equal(-121, data.readInt8(0)); |
| ASSERT.equal(-85, data.readInt8(1)); |
| ASSERT.equal(124, data.readInt8(2)); |
| ASSERT.equal(-17, data.readInt8(3)); |
| } |
| |
| |
| function test16(clazz) { |
| var buffer = new clazz(6); |
| |
| buffer[0] = 0x16; |
| buffer[1] = 0x79; |
| ASSERT.equal(0x1679, buffer.readInt16BE(0)); |
| ASSERT.equal(0x7916, buffer.readInt16LE(0)); |
| |
| buffer[0] = 0xff; |
| buffer[1] = 0x80; |
| ASSERT.equal(-128, buffer.readInt16BE(0)); |
| ASSERT.equal(-32513, buffer.readInt16LE(0)); |
| |
| /* test offset with weenix */ |
| buffer[0] = 0x77; |
| buffer[1] = 0x65; |
| buffer[2] = 0x65; |
| buffer[3] = 0x6e; |
| buffer[4] = 0x69; |
| buffer[5] = 0x78; |
| ASSERT.equal(0x7765, buffer.readInt16BE(0)); |
| ASSERT.equal(0x6565, buffer.readInt16BE(1)); |
| ASSERT.equal(0x656e, buffer.readInt16BE(2)); |
| ASSERT.equal(0x6e69, buffer.readInt16BE(3)); |
| ASSERT.equal(0x6978, buffer.readInt16BE(4)); |
| ASSERT.equal(0x6577, buffer.readInt16LE(0)); |
| ASSERT.equal(0x6565, buffer.readInt16LE(1)); |
| ASSERT.equal(0x6e65, buffer.readInt16LE(2)); |
| ASSERT.equal(0x696e, buffer.readInt16LE(3)); |
| ASSERT.equal(0x7869, buffer.readInt16LE(4)); |
| } |
| |
| |
| function test32(clazz) { |
| var buffer = new clazz(6); |
| |
| buffer[0] = 0x43; |
| buffer[1] = 0x53; |
| buffer[2] = 0x16; |
| buffer[3] = 0x79; |
| ASSERT.equal(0x43531679, buffer.readInt32BE(0)); |
| ASSERT.equal(0x79165343, buffer.readInt32LE(0)); |
| |
| buffer[0] = 0xff; |
| buffer[1] = 0xfe; |
| buffer[2] = 0xef; |
| buffer[3] = 0xfa; |
| ASSERT.equal(-69638, buffer.readInt32BE(0)); |
| ASSERT.equal(-84934913, buffer.readInt32LE(0)); |
| |
| buffer[0] = 0x42; |
| buffer[1] = 0xc3; |
| buffer[2] = 0x95; |
| buffer[3] = 0xa9; |
| buffer[4] = 0x36; |
| buffer[5] = 0x17; |
| ASSERT.equal(0x42c395a9, buffer.readInt32BE(0)); |
| ASSERT.equal(-1013601994, buffer.readInt32BE(1)); |
| ASSERT.equal(-1784072681, buffer.readInt32BE(2)); |
| ASSERT.equal(-1449802942, buffer.readInt32LE(0)); |
| ASSERT.equal(917083587, buffer.readInt32LE(1)); |
| ASSERT.equal(389458325, buffer.readInt32LE(2)); |
| } |
| |
| |
| test8(Buffer); |
| test8(SlowBuffer); |
| test16(Buffer); |
| test16(SlowBuffer); |
| test32(Buffer); |
| test32(SlowBuffer); |