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Speed up test suite by using local npm.js stub

This commit is contained in:
Michael Jackson 2019-08-01 18:01:12 -07:00
parent f362fa9717
commit c3dc2dd014
16 changed files with 89 additions and 71 deletions
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6
jest.config.js
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@ -3,9 +3,9 @@ module.exports = {
'\\.css$': '<rootDir>/modules/__mocks__/styleMock.js', '\\.css$': '<rootDir>/modules/__mocks__/styleMock.js',
'\\.png$': '<rootDir>/modules/__mocks__/imageMock.js', '\\.png$': '<rootDir>/modules/__mocks__/imageMock.js',
'entry-manifest': '<rootDir>/modules/__mocks__/entryManifest.js', 'entry-manifest': '<rootDir>/modules/__mocks__/entryManifest.js',
'getStats\\.js': '<rootDir>/modules/__mocks__/getStatsMock.js' 'getStats\\.js': '<rootDir>/modules/__mocks__/getStatsMock.js',
'utils\\/npm\\.js': '<rootDir>/modules/__mocks__/npmMock.js'
}, },
testMatch: ['**/__tests__/*-test.js'], testMatch: ['**/__tests__/*-test.js'],
testURL: 'http://localhost/', testURL: 'http://localhost/'
setupTestFrameworkScriptFile: './jest.setup.js'
}; };

4
jest.setup.js
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@ -1,4 +0,0 @@
// TODO: Mock out the registry so tests don't actually hit
// the real registry so they don't take so long. Then we can
// remove this.
jest.setTimeout(10000);

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modules/__mocks__/metadata/preact.json Normal file
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modules/__mocks__/metadata/react.json Normal file
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modules/__mocks__/metadata/sinuous.json Normal file
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33
modules/__mocks__/npmMock.js Normal file
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@ -0,0 +1,33 @@
import fs from 'fs';
import path from 'path';
function getPackageInfo(packageName) {
const file = path.resolve(__dirname, `./metadata/${packageName}.json`);
try {
return JSON.parse(fs.readFileSync(file, 'utf-8'));
} catch (error) {
return null;
}
}
export function getVersionsAndTags(packageName) {
const info = getPackageInfo(packageName);
return info
? { versions: Object.keys(info.versions), tags: info['dist-tags'] }
: [];
}
export function getPackageConfig(packageName, version) {
const info = getPackageInfo(packageName);
return info ? info.versions[version] : null;
}
export function getPackage(packageName, version) {
const file = path.resolve(
__dirname,
`./packages/${packageName}-${version}.tgz`
);
return fs.existsSync(file) ? fs.createReadStream(file) : null;
}

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2
modules/__tests__/regularFile-test.js
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@ -10,7 +10,7 @@ describe('A request for a JavaScript file', () => {
it('returns 200', done => { it('returns 200', done => {
request(server) request(server)
.get('/react@16.8.6/index.js') .get('/react@16.8.0/index.js')
.end((err, res) => { .end((err, res) => {
expect(res.statusCode).toBe(200); expect(res.statusCode).toBe(200);
expect(res.headers['content-type']).toMatch( expect(res.headers['content-type']).toMatch(

2
modules/__tests__/serveMetadata-test.js
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@ -10,7 +10,7 @@ describe('A request for metadata', () => {
it('returns 200', done => { it('returns 200', done => {
request(server) request(server)
.get('/react@16.8.6/?meta') .get('/react@16.8.0/?meta')
.end((err, res) => { .end((err, res) => {
expect(res.statusCode).toBe(200); expect(res.statusCode).toBe(200);
expect(res.headers['content-type']).toMatch(/\bapplication\/json\b/); expect(res.headers['content-type']).toMatch(/\bapplication\/json\b/);

12
modules/actions/serveBrowsePage.js
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@ -1,11 +1,12 @@
import { renderToString, renderToStaticMarkup } from 'react-dom/server'; import { renderToString, renderToStaticMarkup } from 'react-dom/server';
import semver from 'semver';
import BrowseApp from '../client/browse/App.js'; import BrowseApp from '../client/browse/App.js';
import MainTemplate from '../templates/MainTemplate.js'; import MainTemplate from '../templates/MainTemplate.js';
import asyncHandler from '../utils/asyncHandler.js'; import asyncHandler from '../utils/asyncHandler.js';
import getScripts from '../utils/getScripts.js'; import getScripts from '../utils/getScripts.js';
import { createElement, createHTML } from '../utils/markup.js'; import { createElement, createHTML } from '../utils/markup.js';
import { getAvailableVersions } from '../utils/npm.js'; import { getVersionsAndTags } from '../utils/npm.js';
const doctype = '<!DOCTYPE html>'; const doctype = '<!DOCTYPE html>';
const globalURLs = const globalURLs =
@ -21,6 +22,15 @@ const globalURLs =
'react-dom': '/react-dom@16.8.6/umd/react-dom.development.js' 'react-dom': '/react-dom@16.8.6/umd/react-dom.development.js'
}; };
function byVersion(a, b) {
return semver.lt(a, b) ? -1 : semver.gt(a, b) ? 1 : 0;
}
async function getAvailableVersions(packageName) {
const versionsAndTags = await getVersionsAndTags(packageName);
return versionsAndTags ? versionsAndTags.versions.sort(byVersion) : [];
}
async function serveBrowsePage(req, res) { async function serveBrowsePage(req, res) {
const availableVersions = await getAvailableVersions(req.packageName); const availableVersions = await getAvailableVersions(req.packageName);
const data = { const data = {

22
modules/middleware/validateVersion.js
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@ -1,6 +1,8 @@
import semver from 'semver';
import asyncHandler from '../utils/asyncHandler.js'; import asyncHandler from '../utils/asyncHandler.js';
import createPackageURL from '../utils/createPackageURL.js'; import createPackageURL from '../utils/createPackageURL.js';
import { getPackageConfig, resolveVersion } from '../utils/npm.js'; import { getPackageConfig, getVersionsAndTags } from '../utils/npm.js';
function semverRedirect(req, res, newVersion) { function semverRedirect(req, res, newVersion) {
res res
@ -15,6 +17,24 @@ function semverRedirect(req, res, newVersion) {
); );
} }
async function resolveVersion(packageName, range) {
const versionsAndTags = await getVersionsAndTags(packageName);
if (versionsAndTags) {
const { versions, tags } = versionsAndTags;
if (range in tags) {
range = tags[range];
}
return versions.includes(range)
? range
: semver.maxSatisfying(versions, range);
}
return null;
}
/** /**
* Check the package version/tag in the URL and make sure it's good. Also * Check the package version/tag in the URL and make sure it's good. Also
* fetch the package config and add it to req.packageConfig. Redirect to * fetch the package config and add it to req.packageConfig. Redirect to

75
modules/utils/npm.js
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@ -1,7 +1,6 @@
import url from 'url'; import url from 'url';
import https from 'https'; import https from 'https';
import LRUCache from 'lru-cache'; import LRUCache from 'lru-cache';
import semver from 'semver';
import debug from './debug.js'; import debug from './debug.js';
import bufferStream from './bufferStream.js'; import bufferStream from './bufferStream.js';
@ -77,18 +76,16 @@ async function fetchPackageInfo(packageName) {
async function fetchVersionsAndTags(packageName) { async function fetchVersionsAndTags(packageName) {
const info = await fetchPackageInfo(packageName); const info = await fetchPackageInfo(packageName);
return info && info.versions
if (info && info.versions) { ? { versions: Object.keys(info.versions), tags: info['dist-tags'] }
return { : null;
versions: Object.keys(info.versions),
tags: info['dist-tags']
};
}
return null;
} }
async function getVersionsAndTags(packageName) { /**
* Returns an object of available { versions, tags }.
* Uses a cache to avoid over-fetching from the registry.
*/
export async function getVersionsAndTags(packageName) {
const cacheKey = `versions-${packageName}`; const cacheKey = `versions-${packageName}`;
const cacheValue = cache.get(cacheKey); const cacheValue = cache.get(cacheKey);
@ -107,45 +104,6 @@ async function getVersionsAndTags(packageName) {
return value; return value;
} }
function byVersion(a, b) {
return semver.lt(a, b) ? -1 : semver.gt(a, b) ? 1 : 0;
}
/**
* Returns an array of available versions, sorted by semver.
*/
export async function getAvailableVersions(packageName) {
const versionsAndTags = await getVersionsAndTags(packageName);
if (versionsAndTags) {
return versionsAndTags.versions.sort(byVersion);
}
return [];
}
/**
* Resolves the semver range or tag to a valid version.
* Output is cached to avoid over-fetching from the registry.
*/
export async function resolveVersion(packageName, range) {
const versionsAndTags = await getVersionsAndTags(packageName);
if (versionsAndTags) {
const { versions, tags } = versionsAndTags;
if (range in tags) {
range = tags[range];
}
return versions.includes(range)
? range
: semver.maxSatisfying(versions, range);
}
return null;
}
// All the keys that sometimes appear in package info // All the keys that sometimes appear in package info
// docs that we don't need. There are probably more. // docs that we don't need. There are probably more.
const packageConfigExcludeKeys = [ const packageConfigExcludeKeys = [
@ -160,10 +118,10 @@ const packageConfigExcludeKeys = [
'scripts' 'scripts'
]; ];
function cleanPackageConfig(doc) { function cleanPackageConfig(config) {
return Object.keys(doc).reduce((memo, key) => { return Object.keys(config).reduce((memo, key) => {
if (!key.startsWith('_') && !packageConfigExcludeKeys.includes(key)) { if (!key.startsWith('_') && !packageConfigExcludeKeys.includes(key)) {
memo[key] = doc[key]; memo[key] = config[key];
} }
return memo; return memo;
@ -172,17 +130,14 @@ function cleanPackageConfig(doc) {
async function fetchPackageConfig(packageName, version) { async function fetchPackageConfig(packageName, version) {
const info = await fetchPackageInfo(packageName); const info = await fetchPackageInfo(packageName);
return info && info.versions && version in info.versions
if (!info || !(version in info.versions)) { ? cleanPackageConfig(info.versions[version])
return null; : null;
}
return cleanPackageConfig(info.versions[version]);
} }
/** /**
* Returns metadata about a package, mostly the same as package.json. * Returns metadata about a package, mostly the same as package.json.
* Output is cached to avoid over-fetching from the registry. * Uses a cache to avoid over-fetching from the registry.
*/ */
export async function getPackageConfig(packageName, version) { export async function getPackageConfig(packageName, version) {
const cacheKey = `config-${packageName}-${version}`; const cacheKey = `config-${packageName}-${version}`;