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'use strict';
// This tests snapshot JS API using the example in the docs.
require('../common');
const assert = require('assert');
const { spawnSync } = require('child_process');
const tmpdir = require('../common/tmpdir');
const fixtures = require('../common/fixtures');
const path = require('path');
const fs = require('fs');
const v8 = require('v8');
// By default it should be false. We'll test that it's true in snapshot
// building mode in the fixture.
assert(!v8.startupSnapshot.isBuildingSnapshot());
tmpdir.refresh();
const blobPath = path.join(tmpdir.path, 'snapshot.blob');
const entry = fixtures.path('snapshot', 'v8-startup-snapshot-api.js');
{
for (const book of [
'book1.en_US.txt',
'book1.es_ES.txt',
'book2.zh_CN.txt',
]) {
const content = `This is ${book}`;
fs.writeFileSync(path.join(tmpdir.path, book), content, 'utf8');
}
fs.copyFileSync(entry, path.join(tmpdir.path, 'entry.js'));
const child = spawnSync(process.execPath, [
'--snapshot-blob',
blobPath,
'--build-snapshot',
'entry.js',
], {
cwd: tmpdir.path
});
if (child.status !== 0) {
console.log(child.stderr.toString());
console.log(child.stdout.toString());
assert.strictEqual(child.status, 0);
}
const stats = fs.statSync(path.join(tmpdir.path, 'snapshot.blob'));
assert(stats.isFile());
}
{
const child = spawnSync(process.execPath, [
'--snapshot-blob',
blobPath,
'book1',
], {
cwd: tmpdir.path,
env: {
...process.env,
BOOK_LANG: 'en_US',
}
});
const stdout = child.stdout.toString().trim();
const stderr = child.stderr.toString().trim();
assert.strictEqual(stderr, 'Reading book1.en_US.txt');
assert.strictEqual(stdout, 'This is book1.en_US.txt');
assert.strictEqual(child.status, 0);
}
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