121 lines
3.7 KiB
JavaScript
121 lines
3.7 KiB
JavaScript
var assert = require('assert');
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var Int64 = require('./Int64');
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exports.setUp = function(done) {
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done();
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};
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exports.testBufferToString = function(test) {
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var int = new Int64(0xfffaffff, 0xfffff700);
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test.equal(
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int.toBuffer().toString('hex'),
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'fffafffffffff700',
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'Buffer to string conversion'
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);
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test.done();
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};
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exports.testBufferCopy = function(test) {
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var src = new Int64(0xfffaffff, 0xfffff700);
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var dst = new Buffer(8);
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src.copy(dst);
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test.deepEqual(
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dst,
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new Buffer([0xff, 0xfa, 0xff, 0xff, 0xff, 0xff, 0xf7, 0x00]),
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'Copy to buffer'
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);
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test.done();
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};
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exports.testValueRepresentation = function(test) {
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var args = [
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[0], '0000000000000000', 0,
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[1], '0000000000000001', 1,
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[-1], 'ffffffffffffffff', -1,
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[1e18], '0de0b6b3a7640000', 1e18,
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['0001234500654321'], '0001234500654321', 0x1234500654321,
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['0ff1234500654321'], '0ff1234500654321', 0xff1234500654300, // Imprecise!
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[0xff12345, 0x654321], '0ff1234500654321', 0xff1234500654300, // Imprecise!
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[0xfffaffff, 0xfffff700],'fffafffffffff700', -0x5000000000900,
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[0xafffffff, 0xfffff700],'affffffffffff700', -0x5000000000000800, // Imprecise!
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['0x0000123450654321'], '0000123450654321', 0x123450654321,
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['0xFFFFFFFFFFFFFFFF'], 'ffffffffffffffff', -1
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];
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// Test constructor argments
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for (var i = 0; i < args.length; i += 3) {
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var a = args[i], octets = args[i+1], number = args[i+2];
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// Create instance
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var x = new Int64();
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Int64.apply(x, a);
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test.equal(x.toOctetString(), octets, 'Constuctor with ' + args.join(', '));
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test.equal(x.toNumber(true), number);
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}
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test.done();
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};
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exports.testBufferOffsets = function(test) {
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var sourceBuffer = new Buffer(16);
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sourceBuffer.writeUInt32BE(0xfffaffff, 2);
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sourceBuffer.writeUInt32BE(0xfffff700, 6);
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var int = new Int64(sourceBuffer, 2);
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assert.equal(
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int.toBuffer().toString('hex'), 'fffafffffffff700',
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'Construct from offset'
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);
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var targetBuffer = new Buffer(16);
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int.copy(targetBuffer, 4);
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assert.equal(
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targetBuffer.slice(4, 12).toString('hex'), 'fffafffffffff700',
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'Copy to offset'
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);
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test.done();
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};
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exports.testInstanceOf = function(test) {
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var x = new Int64();
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assert(x instanceof Int64, 'Variable is not instance of Int64');
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var y = {};
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assert(!(y instanceof Int64), 'Object is an instance of Int64');
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test.done();
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};
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exports.testCompare = function(test) {
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var intMin = new Int64(2147483648, 0);
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var intMinPlusOne = new Int64(2147483648, 1);
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var zero = new Int64(0, 0);
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var intMaxMinusOne = new Int64(2147483647, 4294967294);
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var intMax = new Int64(2147483647, 4294967295);
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assert(intMin.compare(intMinPlusOne) < 0, "INT64_MIN is not less than INT64_MIN+1");
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assert(intMin.compare(zero) < 0, "INT64_MIN is not less than 0");
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assert(intMin.compare(zero) < intMax, "INT64_MIN is not less than INT64_MAX");
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assert(intMax.compare(intMaxMinusOne) > 0, "INT64_MAX is not greater than INT64_MAX-1");
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assert(intMax.compare(zero) > 0, "INT64_MAX is not greater than 0");
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assert(intMax.compare(intMin) > 0, "INT64_MAX is not greater than INT_MIN");
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test.done();
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};
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exports.testEquals = function(test) {
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var intMin = new Int64(2147483648, 0);
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var zero = new Int64(0, 0);
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var intMax = new Int64(2147483647, 4294967295);
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assert(intMin.equals(intMin), "INT64_MIN !== INT64_MIN");
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assert(intMax.equals(intMax), "INT64_MAX !== INT64_MAX");
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assert(zero.equals(zero), "0 !== 0");
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assert(!intMin.equals(zero), "INT64_MIN === 0");
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assert(!intMin.equals(intMax), "INT64_MIN === INT64_MAX");
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assert(!intMax.equals(zero), "INT64_MAX === 0");
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assert(!intMax.equals(intMin), "INT64_MAX === INT64_MIN");
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test.done();
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};
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