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// Flags: --expose-internals
'use strict';
const common = require('../common');
const assert = require('assert');
const initHooks = require('./init-hooks');
const { checkInvocations } = require('./hook-checks');
const hooks = initHooks();
hooks.enable();
const { internalBinding } = require('internal/test/binding');
const { Zlib } = internalBinding('zlib');
const constants = require('zlib').constants;
const handle = new Zlib(constants.DEFLATE);
const as = hooks.activitiesOfTypes('ZLIB');
assert.strictEqual(as.length, 1);
const hdl = as[0];
assert.strictEqual(hdl.type, 'ZLIB');
assert.strictEqual(typeof hdl.uid, 'number');
assert.strictEqual(typeof hdl.triggerAsyncId, 'number');
checkInvocations(hdl, { init: 1 }, 'when created handle');
// Store all buffers together so that they do not get
// garbage collected.
const buffers = {
writeResult: new Uint32Array(2),
dictionary: new Uint8Array(0),
inBuf: new Uint8Array([0x78]),
outBuf: new Uint8Array(1)
};
handle.init(
constants.Z_DEFAULT_WINDOWBITS,
constants.Z_MIN_LEVEL,
constants.Z_DEFAULT_MEMLEVEL,
constants.Z_DEFAULT_STRATEGY,
buffers.writeResult,
function processCallback() { this.cb(); },
buffers.dictionary
);
checkInvocations(hdl, { init: 1 }, 'when initialized handle');
let count = 2;
handle.cb = common.mustCall(onwritten, 2);
handle.write(true, buffers.inBuf, 0, 1, buffers.outBuf, 0, 1);
checkInvocations(hdl, { init: 1 }, 'when invoked write() on handle');
function onwritten() {
if (--count) {
// first write
checkInvocations(hdl, { init: 1, before: 1 },
'when wrote to handle the first time');
handle.write(true, buffers.inBuf, 0, 1, buffers.outBuf, 0, 1);
} else {
// second write
checkInvocations(hdl, { init: 1, before: 2, after: 1 },
'when wrote to handle the second time');
}
}
process.on('exit', onexit);
function onexit() {
hooks.disable();
hooks.sanityCheck('ZLIB');
// TODO: destroy never called here even with large amounts of ticks
// is that correct?
checkInvocations(hdl, { init: 1, before: 2, after: 2 }, 'when process exits');
// Do something with `buffers` to keep them alive until here.
buffers.buffers = buffers;
}
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