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[''] : ['LE', 'BE'] for (var k = 0; k < endianesses.length; k++) { var z = endianesses[k] var v1 = new B(y / 8) var writefn = 'write' + x + y + z var val = (x === 'Int') ? -3 : 3 v1[writefn](val, 0) t.equal( v1.toString('hex'), hex.shift() ) var readfn = 'read' + x + y + z t.equal( v1[readfn](0), reads.shift() ) } } } t.end() }) test('hex of write{Uint,Int}{8,16,32}{LE,BE} with overflow', function (t) { if (!B.TYPED_ARRAY_SUPPORT) { t.pass('object impl: skipping overflow test') t.end() return } t.plan(3 * (2 * 2 * 2 + 2)) var hex = [ '', '03', '00', '030000', '000000', '', 'fd', 'ff', 'fdffff', 'ffffff' ] var reads = [ undefined, 3, 0, NaN, 0, undefined, 253, -256, 16777213, -256 ] var xs = ['UInt', 'Int'] var ys = [8, 16, 32] for (var i = 0; i < xs.length; i++) { var x = xs[i] for (var j = 0; j < ys.length; j++) { var y = ys[j] var endianesses = (y === 8) ? [''] : ['LE', 'BE'] for (var k = 0; k < endianesses.length; k++) { var z = endianesses[k] var v1 = new B(y / 8 - 1) var next = new B(4) next.writeUInt32BE(0, 0) var writefn = 'write' + x + y + z var val = (x === 'Int') ? -3 : 3 v1[writefn](val, 0, true) t.equal( v1.toString('hex'), hex.shift() ) // check that nothing leaked to next buffer. t.equal(next.readUInt32BE(0), 0) // check that no bytes are read from next buffer. next.writeInt32BE(~0, 0) var readfn = 'read' + x + y + z var r = reads.shift() if (isnan(r)) t.pass('equal') else t.equal(v1[readfn](0, true), r) } } } t.end() }) test('large values do not improperly roll over (ref #80)', function (t) { var nums = [-25589992, -633756690, -898146932] var out = new B(12) out.fill(0) out.writeInt32BE(nums[0], 0) var newNum = out.readInt32BE(0) t.equal(nums[0], newNum) out.writeInt32BE(nums[1], 4) newNum = out.readInt32BE(4) t.equal(nums[1], newNum) out.writeInt32BE(nums[2], 8) newNum = out.readInt32BE(8) t.equal(nums[2], newNum) t.end() })