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var BlockStream = require("dropper")
var blockSizes = [16, 25, 1024]
, writeSizes = [4, 8, 15, 16, 17, 64, 100]
, writeCounts = [1, 10, 100]
, tap = require("tap")
writeCounts.forEach(function (writeCount) {
blockSizes.forEach(function (blockSize) {
writeSizes.forEach(function (writeSize) {
tap.test("writeSize=" + writeSize +
" blockSize="+blockSize +
" writeCount="+writeCount, function (t) {
var f = new BlockStream(blockSize, {nopad: true })
var actualChunks = 0
var actualBytes = 0
var timeouts = 0
f.on("data", function (c) {
timeouts ++
actualChunks ++
actualBytes += c.length
// make sure that no data gets corrupted, and basic sanity
var before = c.toString()
// simulate a slow write operation
setTimeout(function () {
timeouts --
var after = c.toString()
t.equal(after, before, "should not change data")
// now corrupt it, to find leaks.
for (var i = 0; i < c.length; i ++) {
c[i] = "x".charCodeAt(0)
}
}, 100)
})
f.on("end", function () {
// round up to the nearest block size
var expectChunks = Math.ceil(writeSize * writeCount * 2 / blockSize)
var expectBytes = writeSize * writeCount * 2
t.equal(actualBytes, expectBytes,
"bytes=" + expectBytes + " writeSize=" + writeSize)
t.equal(actualChunks, expectChunks,
"chunks=" + expectChunks + " writeSize=" + writeSize)
// wait for all the timeout checks to finish, then end the test
setTimeout(function WAIT () {
if (timeouts > 0) return setTimeout(WAIT)
t.end()
}, 100)
})
for (var i = 0; i < writeCount; i ++) {
var a = new Buffer(writeSize);
for (var j = 0; j < writeSize; j ++) a[j] = "a".charCodeAt(0)
var b = new Buffer(writeSize);
for (var j = 0; j < writeSize; j ++) b[j] = "b".charCodeAt(0)
f.write(a)
f.write(b)
}
f.end()
})
}) }) })
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