test-single-executable-application-snapshot-and-code-cache.js

'use strict';

require('../common');

const {
  generateSEA,
  skipIfSingleExecutableIsNotSupported,
} = require('../common/sea');

skipIfSingleExecutableIsNotSupported();

// This tests "useCodeCache" is ignored when "useSnapshot" is true.

const tmpdir = require('../common/tmpdir');
const { writeFileSync, existsSync } = require('fs');
const {
  spawnSyncAndAssert,
} = require('../common/child_process');
const { join } = require('path');
const assert = require('assert');

const configFile = join(tmpdir.path, 'sea-config.json');
const seaPrepBlob = join(tmpdir.path, 'sea-prep.blob');
const outputFile = join(tmpdir.path, process.platform === 'win32' ? 'sea.exe' : 'sea');

{
  tmpdir.refresh();
  const code = `
  const {
    setDeserializeMainFunction,
  } = require('v8').startupSnapshot;

  setDeserializeMainFunction(() => {
    console.log('Hello from snapshot');
  });
  `;

  writeFileSync(join(tmpdir.path, 'snapshot.js'), code, 'utf-8');
  writeFileSync(configFile, `
  {
    "main": "snapshot.js",
    "output": "sea-prep.blob",
    "useSnapshot": true,
    "useCodeCache": true
  }
  `);

  spawnSyncAndAssert(
    process.execPath,
    ['--experimental-sea-config', 'sea-config.json'],
    {
      cwd: tmpdir.path,
      env: {
        NODE_DEBUG_NATIVE: 'SEA',
        ...process.env,
      },
    },
    {
      stderr: /"useCodeCache" is redundant when "useSnapshot" is true/,
    },
  );

  assert(existsSync(seaPrepBlob));

  generateSEA(outputFile, process.execPath, seaPrepBlob);

  spawnSyncAndAssert(
    outputFile,
    {
      env: {
        NODE_DEBUG_NATIVE: 'SEA,MKSNAPSHOT',
        ...process.env,
      },
    }, {
      stdout: 'Hello from snapshot',
      trim: true,
    });
}