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'use strict';
// Tests zlib streams with truncated compressed input
require('../common');
const assert = require('assert');
const zlib = require('zlib');
const inputString = 'ΩΩLorem ipsum dolor sit amet, consectetur adipiscing eli' +
't. Morbi faucibus, purus at gravida dictum, libero arcu ' +
'convallis lacus, in commodo libero metus eu nisi. Nullam' +
' commodo, neque nec porta placerat, nisi est fermentum a' +
'ugue, vitae gravida tellus sapien sit amet tellus. Aenea' +
'n non diam orci. Proin quis elit turpis. Suspendisse non' +
' diam ipsum. Suspendisse nec ullamcorper odio. Vestibulu' +
'm arcu mi, sodales non suscipit id, ultrices ut massa. S' +
'ed ac sem sit amet arcu malesuada fermentum. Nunc sed. ';
const errMessage = /unexpected end of file/;
[
{ comp: 'gzip', decomp: 'gunzip', decompSync: 'gunzipSync' },
{ comp: 'gzip', decomp: 'unzip', decompSync: 'unzipSync' },
{ comp: 'deflate', decomp: 'inflate', decompSync: 'inflateSync' },
{ comp: 'deflateRaw', decomp: 'inflateRaw', decompSync: 'inflateRawSync' }
].forEach(function(methods) {
zlib[methods.comp](inputString, function(err, compressed) {
assert.ifError(err);
const truncated = compressed.slice(0, compressed.length / 2);
const toUTF8 = (buffer) => buffer.toString('utf-8');
// sync sanity
const decompressed = zlib[methods.decompSync](compressed);
assert.strictEqual(toUTF8(decompressed), inputString);
// async sanity
zlib[methods.decomp](compressed, function(err, result) {
assert.ifError(err);
assert.strictEqual(toUTF8(result), inputString);
});
// Sync truncated input test
assert.throws(function() {
zlib[methods.decompSync](truncated);
}, errMessage);
// Async truncated input test
zlib[methods.decomp](truncated, function(err, result) {
assert(errMessage.test(err.message));
});
const syncFlushOpt = { finishFlush: zlib.constants.Z_SYNC_FLUSH };
// Sync truncated input test, finishFlush = Z_SYNC_FLUSH
const result = toUTF8(zlib[methods.decompSync](truncated, syncFlushOpt));
assert.strictEqual(result, inputString.substr(0, result.length));
// Async truncated input test, finishFlush = Z_SYNC_FLUSH
zlib[methods.decomp](truncated, syncFlushOpt, function(err, decompressed) {
assert.ifError(err);
const result = toUTF8(decompressed);
assert.strictEqual(result, inputString.substr(0, result.length));
});
});
});