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| Current File : //proc/self/root/proc/self/root/home/ubuntu/node-v16.18.1/test/parallel/test-zlib-bytes-read.js |
'use strict';
const common = require('../common');
const assert = require('assert');
const zlib = require('zlib');
const expectStr = 'abcdefghijklmnopqrstuvwxyz'.repeat(2);
const expectBuf = Buffer.from(expectStr);
function createWriter(target, buffer) {
const writer = { size: 0 };
const write = () => {
target.write(Buffer.from([buffer[writer.size++]]), () => {
if (writer.size < buffer.length) {
target.flush(write);
} else {
target.end();
}
});
};
write();
return writer;
}
common.expectWarning(
'DeprecationWarning',
'zlib.bytesRead is deprecated and will change its meaning in the ' +
'future. Use zlib.bytesWritten instead.',
'DEP0108');
for (const method of [
['createGzip', 'createGunzip', false],
['createGzip', 'createUnzip', false],
['createDeflate', 'createInflate', true],
['createDeflateRaw', 'createInflateRaw', true],
['createBrotliCompress', 'createBrotliDecompress', true],
]) {
let compWriter;
let compData = Buffer.alloc(0);
const comp = zlib[method[0]]();
comp.on('data', function(d) {
compData = Buffer.concat([compData, d]);
assert.strictEqual(this.bytesWritten, compWriter.size,
`Should get write size on ${method[0]} data.`);
});
comp.on('end', common.mustCall(function() {
assert.strictEqual(this.bytesWritten, compWriter.size,
`Should get write size on ${method[0]} end.`);
assert.strictEqual(this.bytesWritten, expectStr.length,
`Should get data size on ${method[0]} end.`);
{
let decompWriter;
let decompData = Buffer.alloc(0);
const decomp = zlib[method[1]]();
decomp.on('data', function(d) {
decompData = Buffer.concat([decompData, d]);
assert.strictEqual(this.bytesWritten, decompWriter.size,
`Should get write size on ${method[0]}/` +
`${method[1]} data.`);
});
decomp.on('end', common.mustCall(function() {
assert.strictEqual(this.bytesWritten, compData.length,
`Should get compressed size on ${method[0]}/` +
`${method[1]} end.`);
assert.strictEqual(decompData.toString(), expectStr,
`Should get original string on ${method[0]}/` +
`${method[1]} end.`);
}));
decompWriter = createWriter(decomp, compData);
}
// Some methods should allow extra data after the compressed data
if (method[2]) {
const compDataExtra = Buffer.concat([compData, Buffer.from('extra')]);
let decompWriter;
let decompData = Buffer.alloc(0);
const decomp = zlib[method[1]]();
decomp.on('data', function(d) {
decompData = Buffer.concat([decompData, d]);
assert.strictEqual(this.bytesWritten, decompWriter.size,
`Should get write size on ${method[0]}/` +
`${method[1]} data.`);
});
decomp.on('end', common.mustCall(function() {
assert.strictEqual(this.bytesWritten, compData.length,
`Should get compressed size on ${method[0]}/` +
`${method[1]} end.`);
// Checking legacy name.
assert.strictEqual(this.bytesWritten, this.bytesRead);
assert.strictEqual(decompData.toString(), expectStr,
`Should get original string on ${method[0]}/` +
`${method[1]} end.`);
}));
decompWriter = createWriter(decomp, compDataExtra);
}
}));
compWriter = createWriter(comp, expectBuf);
}
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