/
cache.test.js
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/
cache.test.js
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import test from "ava";
import fs from "fs";
import path from "path";
import rimraf from "rimraf";
import webpack from "webpack";
import createTestDirectory from "./helpers/createTestDirectory";
const defaultCacheDir = path.join(
__dirname,
"../node_modules/.cache/babel-loader",
);
const cacheDir = path.join(__dirname, "output/cache/cachefiles");
const outputDir = path.join(__dirname, "output/cache");
const babelLoader = path.join(__dirname, "../lib");
const globalConfig = {
mode: "development",
entry: path.join(__dirname, "fixtures/basic.js"),
module: {
rules: [
{
test: /\.js$/,
loader: babelLoader,
exclude: /node_modules/,
},
],
},
};
// Cache filename is either SHA256 or MD5 hash
const UNCOMPRESSED_CACHE_FILE_REGEX = /^[0-9a-f]{32}(?:[0-9a-f]{32})?\.json$/;
const CACHE_FILE_REGEX = /^[0-9a-f]{32}(?:[0-9a-f]{32})?\.json\.gz$/;
// Create a separate directory for each test so that the tests
// can run in parallel
test.beforeEach.cb(t => {
createTestDirectory(outputDir, t.title, (err, directory) => {
if (err) return t.end(err);
t.context.directory = directory;
t.end();
});
});
test.beforeEach.cb(t => {
createTestDirectory(cacheDir, t.title, (err, directory) => {
if (err) return t.end(err);
t.context.cacheDirectory = directory;
t.end();
});
});
test.beforeEach.cb(t => rimraf(defaultCacheDir, t.end));
test.afterEach.cb(t => rimraf(t.context.directory, t.end));
test.afterEach.cb(t => rimraf(t.context.cacheDirectory, t.end));
test.cb("should output files to cache directory", t => {
const config = Object.assign({}, globalConfig, {
output: {
path: t.context.directory,
},
module: {
rules: [
{
test: /\.js$/,
loader: babelLoader,
exclude: /node_modules/,
options: {
cacheDirectory: t.context.cacheDirectory,
presets: ["@babel/preset-env"],
},
},
],
},
});
webpack(config, (err, stats) => {
t.is(err, null);
t.deepEqual(stats.compilation.errors, []);
t.deepEqual(stats.compilation.warnings, []);
fs.readdir(t.context.cacheDirectory, (err, files) => {
t.is(err, null);
t.true(files.length > 0);
t.end();
});
});
});
test.serial.cb(
"should output json.gz files to standard cache dir by default",
t => {
const config = Object.assign({}, globalConfig, {
output: {
path: t.context.directory,
},
module: {
rules: [
{
test: /\.jsx?/,
loader: babelLoader,
exclude: /node_modules/,
options: {
cacheDirectory: true,
presets: ["@babel/preset-env"],
},
},
],
},
});
webpack(config, (err, stats) => {
t.is(err, null);
t.deepEqual(stats.compilation.errors, []);
t.deepEqual(stats.compilation.warnings, []);
fs.readdir(defaultCacheDir, (err, files) => {
files = files.filter(file => CACHE_FILE_REGEX.test(file));
t.is(err, null);
t.true(files.length > 0);
t.end();
});
});
},
);
test.serial.cb(
"should output non-compressed files to standard cache dir when cacheCompression is set to false",
t => {
const config = Object.assign({}, globalConfig, {
output: {
path: t.context.directory,
},
module: {
rules: [
{
test: /\.jsx?/,
loader: babelLoader,
exclude: /node_modules/,
options: {
cacheDirectory: true,
cacheCompression: false,
presets: ["@babel/preset-env"],
},
},
],
},
});
webpack(config, err => {
t.is(err, null);
fs.readdir(defaultCacheDir, (err, files) => {
files = files.filter(file => UNCOMPRESSED_CACHE_FILE_REGEX.test(file));
t.is(err, null);
t.true(files.length > 0);
t.end();
});
});
},
);
test.serial.cb(
"should output files to standard cache dir if set to true in query",
t => {
const config = Object.assign({}, globalConfig, {
output: {
path: t.context.directory,
},
module: {
rules: [
{
test: /\.jsx?/,
loader: babelLoader,
exclude: /node_modules/,
options: {
cacheDirectory: true,
presets: ["@babel/preset-env"],
},
},
],
},
});
webpack(config, (err, stats) => {
t.is(err, null);
t.deepEqual(stats.compilation.errors, []);
t.deepEqual(stats.compilation.warnings, []);
fs.readdir(defaultCacheDir, (err, files) => {
files = files.filter(file => CACHE_FILE_REGEX.test(file));
t.is(err, null);
t.true(files.length > 0);
t.end();
});
});
},
);
test.cb("should read from cache directory if cached file exists", t => {
const config = Object.assign({}, globalConfig, {
output: {
path: t.context.directory,
},
module: {
rules: [
{
test: /\.jsx?/,
loader: babelLoader,
exclude: /node_modules/,
options: {
cacheDirectory: t.context.cacheDirectory,
presets: ["@babel/preset-env"],
},
},
],
},
});
// @TODO Find a way to know if the file as correctly read without relying on
// Istanbul for coverage.
webpack(config, (err, stats) => {
t.is(err, null);
t.deepEqual(stats.compilation.errors, []);
t.deepEqual(stats.compilation.warnings, []);
webpack(config, err => {
t.is(err, null);
fs.readdir(t.context.cacheDirectory, (err, files) => {
t.is(err, null);
t.true(files.length > 0);
t.end();
});
});
});
});
test.cb("should have one file per module", t => {
const config = Object.assign({}, globalConfig, {
output: {
path: t.context.directory,
},
module: {
rules: [
{
test: /\.jsx?/,
loader: babelLoader,
exclude: /node_modules/,
options: {
cacheDirectory: t.context.cacheDirectory,
presets: ["@babel/preset-env"],
},
},
],
},
});
webpack(config, (err, stats) => {
t.is(err, null);
t.deepEqual(stats.compilation.errors, []);
t.deepEqual(stats.compilation.warnings, []);
fs.readdir(t.context.cacheDirectory, (err, files) => {
t.is(err, null);
t.true(files.length === 3);
t.end();
});
});
});
test.cb("should generate a new file if the identifier changes", t => {
const configs = [
Object.assign({}, globalConfig, {
output: {
path: t.context.directory,
},
module: {
rules: [
{
test: /\.jsx?/,
loader: babelLoader,
exclude: /node_modules/,
options: {
cacheDirectory: t.context.cacheDirectory,
cacheIdentifier: "a",
presets: ["@babel/preset-env"],
},
},
],
},
}),
Object.assign({}, globalConfig, {
output: {
path: t.context.directory,
},
module: {
rules: [
{
test: /\.jsx?/,
loader: babelLoader,
exclude: /node_modules/,
options: {
cacheDirectory: t.context.cacheDirectory,
cacheIdentifier: "b",
presets: ["@babel/preset-env"],
},
},
],
},
}),
];
let counter = configs.length;
configs.forEach(config => {
webpack(config, (err, stats) => {
t.is(err, null);
t.deepEqual(stats.compilation.errors, []);
t.deepEqual(stats.compilation.warnings, []);
counter -= 1;
if (!counter) {
fs.readdir(t.context.cacheDirectory, (err, files) => {
t.is(err, null);
t.true(files.length === 6);
t.end();
});
}
});
});
});
test.cb("should allow to specify the .babelrc file", t => {
const config = [
Object.assign({}, globalConfig, {
entry: path.join(__dirname, "fixtures/constant.js"),
output: {
path: t.context.directory,
},
module: {
rules: [
{
test: /\.jsx?/,
loader: babelLoader,
exclude: /node_modules/,
options: {
cacheDirectory: t.context.cacheDirectory,
extends: path.join(__dirname, "fixtures/babelrc"),
babelrc: false,
presets: ["@babel/preset-env"],
},
},
],
},
}),
Object.assign({}, globalConfig, {
entry: path.join(__dirname, "fixtures/constant.js"),
output: {
path: t.context.directory,
},
module: {
rules: [
{
test: /\.jsx?/,
loader: babelLoader,
exclude: /node_modules/,
options: {
cacheDirectory: t.context.cacheDirectory,
presets: ["@babel/preset-env"],
},
},
],
},
}),
];
webpack(config, (err, multiStats) => {
t.is(err, null);
t.deepEqual(multiStats.stats[0].compilation.errors, []);
t.deepEqual(multiStats.stats[0].compilation.warnings, []);
t.deepEqual(multiStats.stats[1].compilation.errors, []);
t.deepEqual(multiStats.stats[1].compilation.warnings, []);
fs.readdir(t.context.cacheDirectory, (err, files) => {
t.is(err, null);
t.true(files.length === 2);
t.end();
});
});
});