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Merge pull request #94 from dcousens/patch-2

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VarInt now uses correct prefix for 64-bit
This commit is contained in:
Kyle Drake 2014-03-25 17:31:19 -07:00
commit 68e8834c66
2 changed files with 23 additions and 1 deletions
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2
src/convert.js
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@ -131,7 +131,7 @@ function numToVarInt(num) {
if (num < 253) return [num];
if (num < 65536) return [253].concat(numToBytes(num, 2));
if (num < 4294967296) return [254].concat(numToBytes(num, 4));
return [253].concat(numToBytes(num, 8));
return [255].concat(numToBytes(num, 8));
}
function bytesToWords(bytes) {

22
test/convert.js
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@ -71,4 +71,26 @@ describe('convert', function() {
})
})
})
describe('numToVarInt', function() {
describe('works', function() {
var data = [
0, 128, 252, // 8-bit
256, 512, 1024, // 16-bit
65541, // 32-bit
4294967299, // 64-bit
]
var expected = [
[0], [128], [252], // 8-bit
[253, 0, 1], [253, 0, 2], [253, 0, 4], // 16-bit
[254, 5, 0, 1, 0], // 32-bit
[255, 3, 0, 0, 0, 1, 0, 0, 0] // 64-bit
]
for (var i = 0; i < data.length; ++i) {
var actual = convert.numToVarInt(data[i])
assert.deepEqual(actual, expected[i])
}
})
})
})