/
tests.js
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/
tests.js
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/* @flow */
import type {ServerResponse} from 'http';
import type {Gzip} from 'zlib';
const crypto = require('crypto');
const deepResolve = require('super-resolve');
const http = require('http');
const invariant = require('invariant');
const semver = require('semver');
const fsUtils = require('./fs');
export type PackageEntry = Map<string, {|path: string, packageJson: Object|}>;
export type PackageRegistry = Map<string, PackageEntry>;
export type PackageRunDriver = (
string,
Array<string>,
{registryUrl: string},
) => Promise<{|stdout: Buffer, stderr: Buffer|}>;
export type PackageDriver = any;
let whitelist = new Map();
exports.setPackageWhitelist = async function whitelistPackages(
packages: Map<string, Set<string>>,
fn: () => Promise<void>,
) {
whitelist = packages;
await fn();
whitelist = new Map();
};
exports.getPackageRegistry = function getPackageRegistry(): Promise<PackageRegistry> {
if (getPackageRegistry.promise) {
return getPackageRegistry.promise;
}
return (getPackageRegistry.promise = (async () => {
const packageRegistry = new Map();
for (const packageFile of await fsUtils.walk(`${require('pkg-tests-fixtures')}/packages`, {
filter: ['package.json'],
})) {
const packageJson = await fsUtils.readJson(packageFile);
const {name, version} = packageJson;
if (name.startsWith('git-')) {
continue;
}
let packageEntry = packageRegistry.get(name);
if (!packageEntry) {
packageRegistry.set(name, (packageEntry = new Map()));
}
packageEntry.set(version, {
path: require('path').dirname(packageFile),
packageJson,
});
}
return packageRegistry;
})());
};
exports.getPackageEntry = async function getPackageEntry(name: string): Promise<?PackageEntry> {
const packageRegistry = await exports.getPackageRegistry();
return packageRegistry.get(name);
};
exports.getPackageArchiveStream = async function getPackageArchiveStream(name: string, version: string): Promise<Gzip> {
const packageEntry = await exports.getPackageEntry(name);
if (!packageEntry) {
throw new Error(`Unknown package "${name}"`);
}
const packageVersionEntry = packageEntry.get(version);
if (!packageVersionEntry) {
throw new Error(`Unknown version "${version}" for package "${name}"`);
}
return fsUtils.packToStream(packageVersionEntry.path, {
virtualPath: '/package',
});
};
exports.getPackageArchivePath = async function getPackageArchivePath(name: string, version: string): Promise<string> {
const packageEntry = await exports.getPackageEntry(name);
if (!packageEntry) {
throw new Error(`Unknown package "${name}"`);
}
const packageVersionEntry = packageEntry.get(version);
if (!packageVersionEntry) {
throw new Error(`Unknown version "${version}" for package "${name}"`);
}
const archivePath = await fsUtils.createTemporaryFile(`${name}-${version}.tar.gz`);
await fsUtils.packToFile(archivePath, packageVersionEntry.path, {
virtualPath: '/package',
});
return archivePath;
};
exports.getPackageArchiveHash = async function getPackageArchiveHash(
name: string,
version: string,
): Promise<string | Buffer> {
const stream = await exports.getPackageArchiveStream(name, version);
return new Promise((resolve, reject) => {
const hash = crypto.createHash('sha1');
hash.setEncoding('hex');
// Send the archive to the hash function
stream.pipe(hash);
stream.on('end', () => {
const finalHash = hash.read();
invariant(finalHash, 'The hash should have been computated');
resolve(finalHash);
});
});
};
exports.getPackageHttpArchivePath = async function getPackageHttpArchivePath(
name: string,
version: string,
): Promise<string> {
const packageEntry = await exports.getPackageEntry(name);
if (!packageEntry) {
throw new Error(`Unknown package "${name}"`);
}
const packageVersionEntry = packageEntry.get(version);
if (!packageVersionEntry) {
throw new Error(`Unknown version "${version}" for package "${name}"`);
}
const serverUrl = await exports.startPackageServer();
const archiveUrl = `${serverUrl}/${name}/-/${name}-${version}.tgz`;
return archiveUrl;
};
exports.getPackageDirectoryPath = async function getPackageDirectoryPath(
name: string,
version: string,
): Promise<string> {
const packageEntry = await exports.getPackageEntry(name);
if (!packageEntry) {
throw new Error(`Unknown package "${name}"`);
}
const packageVersionEntry = packageEntry.get(version);
if (!packageVersionEntry) {
throw new Error(`Unknown version "${version}" for package "${name}"`);
}
return packageVersionEntry.path;
};
exports.startPackageServer = function startPackageServer(): Promise<string> {
if (startPackageServer.url) {
return startPackageServer.url;
}
async function processPackageInfo(params: ?Array<string>, res: ServerResponse): Promise<boolean> {
if (!params) {
return false;
}
const [, scope, localName] = params;
const name = scope ? `${scope}/${localName}` : localName;
const packageEntry = await exports.getPackageEntry(name);
if (!packageEntry) {
return processError(res, 404, `Package not found: ${name}`);
}
let versions = Array.from(packageEntry.keys());
const whitelistedVersions = whitelist.get(name);
if (whitelistedVersions) {
versions = versions.filter(version => whitelistedVersions.has(version));
}
const data = JSON.stringify({
name,
versions: Object.assign(
{},
...(await Promise.all(
versions.map(async version => {
const packageVersionEntry = packageEntry.get(version);
invariant(packageVersionEntry, 'This can only exist');
return {
[version]: Object.assign({}, packageVersionEntry.packageJson, {
dist: {
shasum: await exports.getPackageArchiveHash(name, version),
tarball: await exports.getPackageHttpArchivePath(name, version),
},
}),
};
}),
)),
),
['dist-tags']: {latest: semver.maxSatisfying(versions, '*')},
});
res.writeHead(200, {['Content-Type']: 'application/json'});
res.end(data);
return true;
}
async function processPackageTarball(params: ?Array<string>, res: ServerResponse): Promise<boolean> {
if (!params) {
return false;
}
const [, scope, localName, version] = params;
const name = scope ? `${scope}/${localName}` : localName;
const packageEntry = await exports.getPackageEntry(name);
if (!packageEntry) {
return processError(res, 404, `Package not found: ${name}`);
}
const packageVersionEntry = packageEntry.get(version);
if (!packageVersionEntry) {
return processError(res, 404, `Package not found: ${name}@${version}`);
}
res.writeHead(200, {
['Content-Type']: 'application/octet-stream',
['Transfer-Encoding']: 'chunked',
});
const packStream = fsUtils.packToStream(packageVersionEntry.path, {virtualPath: '/package'});
packStream.pipe(res);
return true;
}
function processError(res: ServerResponse, statusCode: number, errorMessage: string): boolean {
console.error(errorMessage);
res.writeHead(statusCode);
res.end(errorMessage);
return true;
}
return new Promise((resolve, reject) => {
const server = http.createServer(
(req, res) =>
void (async () => {
try {
if (await processPackageInfo(req.url.match(/^\/(?:(@[^\/]+)\/)?([^@\/][^\/]*)$/), res)) {
return;
}
if (
await processPackageTarball(req.url.match(/^\/(?:(@[^\/]+)\/)?([^@\/][^\/]*)\/-\/\2-(.*)\.tgz$/), res)
) {
return;
}
processError(res, 404, `Invalid route: ${req.url}`);
} catch (error) {
processError(res, 500, error.stack);
}
})(),
);
// We don't want the server to prevent the process from exiting
server.unref();
server.listen(() => {
const {port} = server.address();
resolve((startPackageServer.url = `http://localhost:${port}`));
});
});
};
exports.generatePkgDriver = function generatePkgDriver({runDriver}: {|runDriver: PackageRunDriver|}): PackageDriver {
function withConfig(definition): PackageDriver {
const makeTemporaryEnv = (packageJson, subDefinition, fn) => {
if (typeof subDefinition === 'function') {
fn = subDefinition;
subDefinition = {};
}
if (typeof fn !== 'function') {
throw new Error(
// eslint-disable-next-line
`Invalid test function (got ${typeof fn}) - you probably put the closing parenthesis of the "makeTemporaryEnv" utility at the wrong place`,
);
}
return async function(): Promise<void> {
const path = await fsUtils.realpath(await fsUtils.createTemporaryFolder());
const registryUrl = await exports.startPackageServer();
// Writes a new package.json file into our temporary directory
await fsUtils.writeJson(`${path}/package.json`, await deepResolve(packageJson));
const run = (...args) => {
let callDefinition = {};
if (args.length > 0 && typeof args[args.length - 1] === 'object') {
callDefinition = args.pop();
}
return runDriver(path, args, {
registryUrl,
...definition,
...subDefinition,
...callDefinition,
});
};
const source = async script => {
return JSON.parse((await run('node', '-p', `JSON.stringify((() => ${script})())`)).stdout.toString());
};
try {
await fn({
path,
run,
source,
});
} catch (error) {
error.message = `Temporary fixture folder: ${path}\n\n` + error.message;
throw error;
}
};
};
makeTemporaryEnv.withConfig = subDefinition => {
return withConfig({...definition, ...subDefinition});
};
return makeTemporaryEnv;
}
return withConfig({});
};
exports.testIf = function testIf(condition, ...args) {
if (condition()) {
test(...args);
}
};