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