80 lines
2.2 KiB
JavaScript
80 lines
2.2 KiB
JavaScript
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'use strict';
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const assert = require('assert');
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const ref = require('../');
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let weak; try { weak = require('weak-napi'); } catch (e) {}
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describe('Object', function() {
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const obj = {
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foo: 'bar',
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test: Math.random(),
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now: new Date()
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};
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beforeEach(gc);
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it('should write and read back an Object in a Buffer', function() {
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const buf = Buffer.alloc(ref.sizeof.Object);
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ref.writeObject(buf, 0, obj);
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const out = ref.readObject(buf);
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assert.strictEqual(obj, out);
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assert.deepEqual(obj, out);
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})
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it('should retain references to written Objects', function (done) {
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if (weak === undefined)
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return this.skip('weak not avaialbe');
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let o_gc = false;
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let buf_gc = false;
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let o = { foo: 'bar' };
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let buf = Buffer.alloc(ref.sizeof.Object);
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weak(o, () => { o_gc = true });
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weak(buf, () => { buf_gc = true });
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ref.writeObject(buf, 0, o);
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assert(!o_gc, '"o" has been garbage collected too soon');
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assert(!buf_gc, '"buf" has been garbage collected too soon');
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// try to GC `o`
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o = null;
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gc();
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assert(!o_gc, '"o" has been garbage collected too soon');
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assert(!buf_gc, '"buf" has been garbage collected too soon');
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// now GC `buf`
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buf = null;
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gc();
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setImmediate(() => {
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setImmediate(() => {
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assert(buf_gc, '"buf" has not been garbage collected');
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gc();
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setImmediate(() => {
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setImmediate(() => {
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assert(o_gc, '"o" has not been garbage collected');
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done();
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});
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});
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});
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});
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});
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it('should throw an Error when reading an Object from the NULL pointer', function() {
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assert.throws(() => {
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ref.NULL.readObject();
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});
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});
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describe('offset', function() {
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it('should read two Objects next to each other in memory', function() {
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const buf = Buffer.alloc(ref.sizeof.Object * 2);
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const a = {};
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const b = {};
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buf.writeObject(a, 0 * ref.sizeof.Object);
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buf.writeObject(b, 1 * ref.sizeof.Object);
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const _a = buf.readObject(0 * ref.sizeof.Object);
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const _b = buf.readObject(1 * ref.sizeof.Object);
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assert.strictEqual(a, _a);
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assert.strictEqual(b, _b);
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});
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});
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});
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