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'use strict';
const Module = require('module');
const fs = require('fs');
const path = require('path');
const tap = require('tap');
const temp = require('temp');
temp.track();
const FileSystemBlobStore_mock = require('./FileSystemBlobStore-mock');
process.env.DISABLE_V8_COMPILE_CACHE = 1;
const NativeCompileCache = require('..').__TEST__.NativeCompileCache;
let cachedFiles;
let fakeCacheStore;
let nativeCompileCache;
tap.beforeEach(() => {
fakeCacheStore = new FileSystemBlobStore_mock();
cachedFiles = fakeCacheStore._cachedFiles;
nativeCompileCache = new NativeCompileCache();
nativeCompileCache.setCacheStore(fakeCacheStore);
nativeCompileCache.install();
});
tap.afterEach(() => {
nativeCompileCache.uninstall();
});
tap.test('writes and reads from the cache storage when requiring files', t => {
let fn1 = require('./fixtures/file-1');
const fn2 = require('./fixtures/file-2');
t.equal(cachedFiles.length, 2);
t.equal(cachedFiles[0].key, require.resolve('./fixtures/file-1'));
t.type(cachedFiles[0].buffer, Uint8Array);
t.ok(cachedFiles[0].buffer.length > 0);
t.equal(fn1(), 1);
t.equal(cachedFiles[1].key, require.resolve('./fixtures/file-2'));
t.type(cachedFiles[1].buffer, Uint8Array);
t.ok(cachedFiles[1].buffer.length > 0);
t.equal(fn2(), 2);
delete Module._cache[require.resolve('./fixtures/file-1')];
fn1 = require('./fixtures/file-1');
t.equal(cachedFiles.length, 2);
t.equal(fn1(), 1);
t.end();
});
tap.test('when the cache changes it updates the new cache', t => {
let fn4 = require('./fixtures/file-4');
t.equal(cachedFiles.length, 1);
t.equal(cachedFiles[0].key, require.resolve('./fixtures/file-4'));
t.type(cachedFiles[0].buffer, Uint8Array);
t.ok(cachedFiles[0].buffer.length > 0);
t.equal(fn4(), 'file-4');
const fakeCacheStore2 = new FileSystemBlobStore_mock();
const cachedFiles2 = fakeCacheStore._cachedFiles;
nativeCompileCache.setCacheStore(fakeCacheStore2);
delete Module._cache[require.resolve('./fixtures/file-4')];
fn4 = require('./fixtures/file-4');
t.equal(cachedFiles.length, 1);
t.equal(cachedFiles2.length, 1);
t.equal(cachedFiles[0].key, require.resolve('./fixtures/file-4'));
t.equal(cachedFiles2[0].key, require.resolve('./fixtures/file-4'));
t.equal(cachedFiles[0].invalidationKey, cachedFiles2[0].invalidationKey);
t.type(cachedFiles[0].buffer, Uint8Array);
t.type(cachedFiles2[0].buffer, Uint8Array);
t.ok(cachedFiles[0].buffer.length > 0);
t.ok(cachedFiles2[0].buffer.length > 0);
t.end();
});
tap.test('deletes previously cached code when the cache is an invalid file', t => {
fakeCacheStore.has = () => true;
fakeCacheStore.get = () => Buffer.from('an invalid cache');
let wasCalledWith = null;
fakeCacheStore.set = arg => { wasCalledWith = arg; };
// older v8 still calls delete, though
fakeCacheStore.delete = arg => { wasCalledWith = arg; };
const fn3 = require('./fixtures/file-3');
t.equal(wasCalledWith, require.resolve('./fixtures/file-3'));
t.equal(fn3(), 3);
t.end();
});
tap.test('when a previously required and cached file changes removes it from the store and re-inserts it with the new cache', t => {
const tmpDir = temp.mkdirSync('native-compile-cache-test');
const tmpFile = path.join(tmpDir, 'file-5.js');
fs.writeFileSync(tmpFile, 'module.exports = () => `file-5`;');
let fn5 = require(tmpFile);
t.equal(cachedFiles.length, 1);
t.equal(cachedFiles[0].key, require.resolve(tmpFile));
t.type(cachedFiles[0].buffer, Uint8Array);
t.ok(cachedFiles[0].buffer.length > 0);
t.equal(fn5(), 'file-5');
delete Module._cache[require.resolve(tmpFile)];
fs.appendFileSync(tmpFile, '\n\n');
fn5 = require(tmpFile);
t.equal(cachedFiles.length, 2);
t.equal(cachedFiles[1].key, require.resolve(tmpFile));
t.notEqual(cachedFiles[1].invalidationKey, cachedFiles[0].invalidationKey);
t.type(cachedFiles[1].buffer, Uint8Array);
t.ok(cachedFiles[1].buffer.length > 0);
t.end();
});
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