refactor: testing

.github/workflows/ci.yml

@@ -8,15 +8,58 @@ on:
   workflow_dispatch: {}
 
 jobs:
-  lint:
-    uses: ./.github/workflows/node.yml
-    with:
-      run: npm run lint
-  test:
-    uses: ./.github/workflows/node.yml
-    with:
-      run: npm run -- test -p 360000
+
   build:
-    uses: ./.github/workflows/node.yml
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
         with:
-      run: npm run build
+          node-version: 20.x
+          cache: 'npm'
+      - run: npm config set registry ${{ vars.NPM_CI_REGISTRY }}
+        if: ${{ vars.NPM_CI_REGISTRY }}
+      - run: |
+          npm ci
+          npm run build
+
+  ci:
+    runs-on: ubuntu-latest
+    strategy:
+      max-parallel: ${{ vars.CI_PARALLEL || 256 }}
+      matrix:
+        node-version: [16.x, 18.x, 20.x]
+    steps:
+      - uses: actions/checkout@v4
+      - run: |
+          sudo apt-get update
+          sudo apt-get install -y libgconf-2-4 libatk1.0-0 libatk-bridge2.0-0 libgdk-pixbuf2.0-0 libgtk-3-0 libgbm-dev libnss3-dev libxss-dev libasound2
+      - uses: browser-actions/setup-chrome@latest
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'npm'
+      - run: npm config set registry ${{ vars.NPM_CI_REGISTRY }}
+        if: ${{ vars.NPM_CI_REGISTRY }}
+      - run: |
+          npm ci
+          npm run -- test -t 360000
+          npm run -- test -t 360000 -p e2e
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20.x
+          cache: 'npm'
+      - run: npm config set registry ${{ vars.NPM_CI_REGISTRY }}
+        if: ${{ vars.NPM_CI_REGISTRY }}
+      - run: |
+          npm ci
+          npm run lint
+

.github/workflows/e2e.yml

@@ -1,12 +0,0 @@
-name: End-to-end tests
-
-on:
-  schedule:
-    - cron: '20 4 * * *'
-  workflow_dispatch: {}
-
-jobs:
-  e2e:
-    uses: ./.github/workflows/node.yml
-    with:
-      run: npm run -- test -t 360000 -p e2e

.github/workflows/node.yml

@@ -1,27 +0,0 @@
-name: Continuous Integration
-
-on:
-  workflow_call:
-    inputs:
-      run:
-        required: true
-        type: string
-
-jobs:
-  node:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        node-version: [18.x, 20.x]
-    steps:
-    - uses: actions/checkout@v4
-    - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v4
-      with:
-        node-version: ${{ matrix.node-version }}
-        cache: 'npm'
-    - run: npm config set registry ${{ vars.NPM_CI_REGISTRY }}
-      if: ${{ vars.NPM_CI_REGISTRY }}
-    - run: |
-        npm ci
-        ${{ inputs.run }}

packages/build/build/commands.js

@@ -261,11 +261,12 @@ exports.commands = (program, flecks) => {
         const spawnWebpack = () => {
           webpack = spawnWith(cmd, options);
           webpack.on('message', (message) => {
-            switch (message) {
+            switch (message.type) {
               case 'kill':
                 debug('killing...');
                 webpack.kill();
                 watcher.close();
+                process.exitCode = message.payload;
                 break;
               case 'restart':
                 debug('restarting webpack...');

packages/build/build/default.eslint.config.js

@@ -41,6 +41,7 @@ module.exports = async (flecks) => ({
         'test/**/*.js',
       ],
       rules: {
+        'prefer-arrow-callback': ['error', {allowNamedFunctions: true}],
         'brace-style': 'off',
         'class-methods-use-this': 'off',
         'import/no-extraneous-dependencies': 'off',

packages/build/build/flecks.bootstrap.js

@@ -26,9 +26,11 @@ exports.hooks = {
     }
     config.plugins.push(new ProcessAssets(target, flecks));
   },
-  '@flecks/build.config.alter': async ({test}) => {
+  '@flecks/build.config.alter': async ({test}, env, argv, flecks) => {
     if (test) {
+      // Externalize the rest.
       test.externals = await externals({
+        additionalModuleDirs: flecks.resolver.modules,
         allowlist: Object.keys(test.resolve.fallback).map((fallback) => new RegExp(fallback)),
       });
     }

packages/core/build/testing.js

@@ -1,7 +1,7 @@
 import {randomBytes} from 'crypto';
 import {mkdir} from 'fs/promises';
 import {tmpdir} from 'os';
-import {join} from 'path';
+import {basename, join} from 'path';
 
 import {rimraf} from 'rimraf';
 
@@ -12,8 +12,23 @@ export function id() {
 }
 
 export async function createWorkspace() {
-  const workspace = join(tmpdir(), '@flecks', 'core', 'testing', await id());
+  let workspace = join(tmpdir(), '@flecks', 'core', 'testing', await id());
+  try {
+    throw new Error();
+  }
+  catch (error) {
+    workspace += `-${basename(
+      error.stack
+        .split('\n').slice(-1)[0]
+        .split('at ')[1]
+        .match(/\((.*)\)$/)[1]
+        .split(':').slice(-3, -2)[0],
+    )}`;
+  }
   await mkdir(workspace, {recursive: true});
+  process.on('exit', () => {
+    rimraf.sync(workspace);
+  });
   // sheeeeesh
   process.prependListener('message', async (message) => {
     if ('__workerpool-terminate__' === message) {

packages/fleck/build/commands.js

@@ -1,10 +1,10 @@
 const {access} = require('fs/promises');
-const {join, relative} = require('path');
+const {join} = require('path');
 
 const {commands: coreCommands} = require('@flecks/build/build/commands');
 const {rimraf} = require('@flecks/build/src/server');
 const {D} = require('@flecks/core/src');
-const {glob} = require('@flecks/core/src/server');
+const {glob, pipesink, processCode} = require('@flecks/core/src/server');
 const Mocha = require('mocha');
 const {watchParallelRun} = require('mocha/lib/cli/watch-run');
 
@@ -12,6 +12,7 @@ const debug = D('@flecks/build.commands');
 
 const {
   FLECKS_CORE_ROOT = process.cwd(),
+  TERM,
 } = process.env;
 
 module.exports = (program, flecks) => {
@@ -41,47 +42,36 @@ module.exports = (program, flecks) => {
         watch,
       } = opts;
       const {build} = coreCommands(program, flecks);
-      let files = [];
-      if (platforms.includes('default')) {
-        files.push(...await glob(join(FLECKS_CORE_ROOT, 'test', '*.js')));
-      }
-      await Promise.all(
-        platforms
-          .filter((platform) => 'default' !== platform)
-          .map(async (platform) => {
-            files.push(...await glob(join(FLECKS_CORE_ROOT, 'test', platform, '*.js')));
-          }),
-      );
-      if (0 === files.length) {
-        // eslint-disable-next-line no-console
-        console.log('No tests found.');
-        return undefined;
-      }
-      files = files.map((path) => relative(FLECKS_CORE_ROOT, path));
-      if (only) {
-        if (files.includes(only)) {
-          files = [only];
-        }
-        else {
-          throw new Error(`Test '${only}' does not exist!`);
-        }
-      }
-      files = files.map((file) => join('dist', file));
-      // Remove the previous test.
+      // Remove the previous test(s).
       await rimraf(join(FLECKS_CORE_ROOT, 'dist', 'test'));
       // Kick off building the test and wait for the file to exist.
-      await build.action(
+      const child = await build.action(
         'test',
         {
-          env: {FLECKS_CORE_TEST_PLATFORMS: JSON.stringify(platforms)},
+          env: {
+            FLECKS_CORE_TEST_PLATFORMS: JSON.stringify(platforms),
+            FORCE_COLOR: 'dumb' !== TERM,
+          },
           production,
-          stdio: 'ignore',
+          stdio: watch ? 'inherit' : 'pipe',
           watch,
         },
       );
+      if (!watch) {
+        const stdout = pipesink(child.stdout);
+        if (0 !== await processCode(child)) {
+          const buffer = await stdout;
+          if (!process.stdout.write(buffer)) {
+            await new Promise((resolve, reject) => {
+              process.stdout.on('error', reject);
+              process.stdout.on('drain', resolve);
+            });
+          }
+          program.error('\nbuilding tests failed!\n');
+        }
+      }
       debug('Testing...', opts);
-      // eslint-disable-next-line no-constant-condition
-      while (true) {
+      while (watch) {
         try {
           // eslint-disable-next-line no-await-in-loop
           await access(join(FLECKS_CORE_ROOT, 'dist', 'test'));
@@ -94,6 +84,19 @@ module.exports = (program, flecks) => {
           });
         }
       }
+      let files = await glob(join(FLECKS_CORE_ROOT, 'dist', 'test', '**', '*.js'));
+      if (0 === files.length) {
+        return undefined;
+      }
+      if (only) {
+        const index = files.indexOf(join(FLECKS_CORE_ROOT, 'dist', only));
+        if (-1 !== index) {
+          files = [files[index]];
+        }
+        else {
+          throw new Error(`Test '${only}' does not exist!`);
+        }
+      }
       // Magic.
       require('@flecks/core/build/resolve')(
         {

packages/server/build/start.js

@@ -92,15 +92,17 @@ class StartServerPlugin {
       ...(inspectPort && {inspectPort}),
     });
     this.worker = cluster.fork(env);
+    this.worker.on('exit', (code) => {
+      if (killOnExit) {
+        process.send({type: 'kill', payload: code});
+        process.exit(code);
+      }
+    });
     this.worker.on('disconnect', () => {
       if (this.worker.exitedAfterDisconnect) {
         // eslint-disable-next-line no-console
         console.error('[HMR] Restarting application...');
-        process.send('restart');
-      }
-      else if (killOnExit) {
-        process.send('kill');
-        process.exit(0);
+        process.send({type: 'restart'});
       }
     });
     return new Promise((resolve, reject) => {

packages/server/package.json

@@ -19,7 +19,8 @@
   },
   "files": [
     "entry.js",
-    "runtime.js"
+    "runtime.js",
+    "server.js"
   ],
   "dependencies": {
     "@flecks/core": "^4.0.5"

packages/server/src/entry.js

@@ -20,15 +20,9 @@ import {D, Flecks} from '@flecks/core';
   }
   const debug = D('@flecks/server/entry');
   debug('starting server...');
-  try {
   global.flecks = await Flecks.from({...runtime, flecks: await loadFlecks()});
   await global.flecks.invokeSequentialAsync('@flecks/server.up');
   debug('up!');
-  }
-  catch (error) {
-    // eslint-disable-next-line no-console
-    console.error(error);
-  }
 })();
 
 if (module.hot) {

packages/server/src/server.js

@@ -0,0 +1,49 @@
+import cluster from 'cluster';
+import {createConnection} from 'net';
+
+const {
+  FLECKS_SERVER_TEST_SOCKET,
+  NODE_ENV,
+} = process.env;
+
+export const hooks = {
+  '@flecks/server.up': (flecks) => {
+    if (!FLECKS_SERVER_TEST_SOCKET || 'test' !== NODE_ENV) {
+      return;
+    }
+    const socket = createConnection(FLECKS_SERVER_TEST_SOCKET);
+    if (cluster.isWorker) {
+      cluster.worker.on('disconnect', () => {
+        socket.end();
+      });
+    }
+    flecks.server.socket = socket;
+    socket.on('connect', () => {
+      socket.on('data', (data) => {
+        const {meta, payload, type} = JSON.parse(data);
+        switch (type) {
+          case 'config.get':
+            socket.write(JSON.stringify({
+              meta,
+              payload: flecks.get(payload),
+            }));
+            break;
+          case 'exit':
+            socket.end();
+            process.exit(payload);
+            break;
+          default:
+        }
+      });
+    });
+  },
+};
+
+export const mixin = (Flecks) => class FlecksWithServer extends Flecks {
+
+  constructor(runtime) {
+    super(runtime);
+    this.server = {};
+  }
+
+};

packages/server/test/server/build/build.js

@@ -2,9 +2,14 @@ import {cp} from 'fs/promises';
 import {join} from 'path';
 
 import {createWorkspace} from '@flecks/core/build/testing';
-import {binaryPath, processCode, spawnWith} from '@flecks/core/server';
+import {
+  binaryPath,
+  pipesink,
+  processCode,
+  spawnWith,
+} from '@flecks/core/server';
 
-import {listen} from './listen';
+import {socketListener} from './listen';
 
 const {
   FLECKS_CORE_ROOT = process.cwd(),
@@ -18,43 +23,85 @@ export async function createApplication() {
   return workspace;
 }
 
-export async function buildChild(path, {args = [], opts = {}} = {}) {
-  return spawnWith(
+class TestingServer {
+
+  constructor(path, child, socketServer) {
+    this.path = path;
+    this.child = child;
+    this.socketServer = socketServer;
+  }
+
+  async waitForSocket(options) {
+    return this.socketServer.waitForSocket(options);
+  }
+
+}
+
+export async function startServer({
+  args = ['-h'],
+  beforeBuild,
+  failOnErrorCode = true,
+  opts = {},
+  path: request,
+  task,
+} = {}) {
+  let previousTimeout;
+  const start = Date.now();
+  if (task) {
+    previousTimeout = task.timeout();
+    task.timeout(0);
+  }
+  const {socketPath, socketServer} = await socketListener();
+  const path = request || await createApplication();
+  if (beforeBuild) {
+    await beforeBuild({path, task});
+  }
+  const server = spawnWith(
     [await binaryPath('flecks', '@flecks/build'), 'build', ...args],
     {
-      stdio: 'ignore',
+      stdio: 'pipe',
       ...opts,
       env: {
         FLECKS_ENV__flecks_server__stats: '{"preset": "none"}',
-        FLECKS_ENV__flecks_server__start: 0,
+        FLECKS_ENV__flecks_server__start: true,
         FLECKS_CORE_ROOT: path,
+        FLECKS_SERVER_TEST_SOCKET: socketPath,
+        NODE_ENV: 'test',
         NODE_PATH: join(FLECKS_CORE_ROOT, '..', '..', 'node_modules'),
         ...opts.env,
       },
     },
   );
+  if (failOnErrorCode) {
+    const stderr = pipesink(server.stderr);
+    server.on('exit', async (code) => {
+      if (0 !== code) {
+        const buffer = await stderr;
+        if (!process.stderr.write(buffer)) {
+          await new Promise((resolve, reject) => {
+            process.stderr.on('error', reject);
+            process.stderr.on('drain', resolve);
+          });
         }
-
-export async function build(path, {args = [], opts = {}} = {}) {
-  return processCode(await buildChild(path, {args, opts}));
+        // eslint-disable-next-line no-console
+        console.error('\nserver process exited unexpectedly\n');
+        process.exit(code);
       }
-
-export async function serverActions(path, actions) {
-  const {listening, path: socketPath, socketServer} = await listen();
-  await listening;
-  const server = spawnWith(
-    ['node', join(path, 'dist', 'server')],
-    {
-      env: {
-        FLECKS_SERVER_TEST_SOCKET: socketPath,
-        NODE_PATH: join(FLECKS_CORE_ROOT, '..', '..', 'node_modules'),
-      },
-      stdio: 'ignore',
-    },
+    });
+  }
+  task?.timeout(previousTimeout + (Date.now() - start));
+  return new TestingServer(
+    path,
+    server,
+    socketServer,
   );
-  const [code, results] = await Promise.all([
-    processCode(server),
-    socketServer.waitForSocket().then(async (socket) => {
+}
+
+export function withServer(task, options) {
+  return async function withServer() {
+    const server = await startServer({...options, task: this});
+    const socket = await server.waitForSocket({task: this});
+    server.actions = async (actions) => {
       const results = [];
       await actions.reduce(
         (p, action) => (
@@ -68,7 +115,25 @@ export async function serverActions(path, actions) {
         Promise.resolve(),
       );
       return results;
-    }),
-  ]);
-  return {code, results};
+    };
+    return task({server, socket});
+  };
+}
+
+export async function build(path, {args = [], opts = {}} = {}) {
+  return processCode(spawnWith(
+    [await binaryPath('flecks', '@flecks/build'), 'build', ...args],
+    {
+      stdio: 'ignore',
+      ...opts,
+      env: {
+        FLECKS_ENV__flecks_server__stats: '{"preset": "none"}',
+        FLECKS_ENV__flecks_server__start: 0,
+        FLECKS_CORE_ROOT: path,
+        NODE_ENV: 'test',
+        NODE_PATH: join(FLECKS_CORE_ROOT, '..', '..', 'node_modules'),
+        ...opts.env,
+      },
+    },
+  ));
 }

packages/server/test/server/build/listen.js

@@ -33,12 +33,12 @@ class SocketWrapper {
     });
   }
 
-  async waitForHmr() {
+  async waitForAction(type) {
     return new Promise((resolve, reject) => {
       this.socket.on('error', reject);
       this.socket.on('data', (data) => {
         const action = JSON.parse(data.toString());
-        if ('hmr' === action.type) {
+        if (action.type === type) {
           resolve(action);
         }
       });
@@ -47,31 +47,39 @@ class SocketWrapper {
 
 }
 
-export async function listen() {
+export async function socketListener() {
   const path = join(tmpdir(), 'flecks', 'ci', await id());
   await mkdir(dirname(path), {recursive: true});
   const server = createServer();
   server.listen(path);
-  server.waitForSocket = () => (
+  server.waitForSocket = ({task, timeout = 30000} = {}) => (
     new Promise((resolve, reject) => {
-      server.on('error', reject);
+      let previousTimeout;
+      const start = Date.now();
+      if (task) {
+        previousTimeout = task.timeout();
+        task.timeout(0);
+      }
+      const handle = setTimeout(() => {
+        reject(new Error('timeout waiting for IPC connection'));
+      }, timeout);
+      const finish = () => {
+        clearTimeout(handle);
+        task?.timeout(previousTimeout + (Date.now() - start));
+      };
+      server.on('error', (error) => {
+        finish();
+        reject(error);
+      });
       server.on('connection', (socket) => {
+        finish();
         resolve(new SocketWrapper(socket));
       });
     })
   );
-  return {
-    listening: new Promise((resolve, reject) => {
+  await new Promise((resolve, reject) => {
     server.on('error', reject);
     server.on('listening', resolve);
-    }),
-    path,
-    socketServer: server,
-  };
-}
-
-export async function socketListener() {
-  const {listening, path: socketPath, socketServer} = await listen();
-  await listening;
-  return {socketServer, socketPath};
+  });
+  return {socketServer: server, socketPath: path};
 }

packages/server/test/server/config-fail.js

@@ -1,38 +1,15 @@
 import {join} from 'path';
 
-import {heavySetup} from '@flecks/core/build/testing';
 import {writeFile} from '@flecks/core/server';
 import {expect} from 'chai';
 
-import {build, createApplication} from './build/build';
-import {socketListener} from './build/listen';
+import {withServer} from './build/build';
 
-let path;
-let socket;
-
-before(heavySetup(async () => {
-  path = await createApplication();
-  const {socketPath, socketServer} = await socketListener();
-  build(
-    path,
-    {
-      args: ['-h'],
-      opts: {
-        env: {
-          FLECKS_ENV__flecks_server__start: true,
-          FLECKS_SERVER_TEST_SOCKET: socketPath,
-        },
-      },
-    },
-  );
-  socket = await socketServer.waitForSocket();
-}));
-
-it('updates config', async () => {
+it('allows updates to fail', withServer(async ({server, socket}) => {
   expect((await socket.send({type: 'config.get', payload: 'comm.foo'})).payload)
     .to.equal('bar');
   await writeFile(
-    join(path, 'build', 'flecks.yml'),
+    join(server.path, 'build', 'flecks.yml'),
     `
       '@flecks/build': {}
       '@flecks/core': {}
@@ -40,12 +17,12 @@ it('updates config', async () => {
       'comm:./comm': {foo: 'baz'}
     `,
   );
-  await socket.waitForHmr();
+  await socket.waitForAction('hmr');
   expect((await socket.send({type: 'config.get', payload: 'comm.foo'})).payload)
     .to.equal('baz');
   let restarted;
   const whatHappened = Promise.race([
-    socket.waitForHmr()
+    socket.waitForAction('hmr')
       .then(() => {
         restarted = false;
       })
@@ -58,7 +35,7 @@ it('updates config', async () => {
     }),
   ]);
   await writeFile(
-    join(path, 'build', 'flecks.yml'),
+    join(server.path, 'build', 'flecks.yml'),
     `
       '@flecks/build': {}
       '@flecks/core': {}
@@ -69,4 +46,4 @@ it('updates config', async () => {
   await whatHappened;
   expect(restarted)
     .to.be.true;
-});
+}));

packages/server/test/server/config-restart.js

@@ -1,40 +1,14 @@
 import {join} from 'path';
 
-import {heavySetup} from '@flecks/core/build/testing';
 import {writeFile} from '@flecks/core/server';
 import {expect} from 'chai';
 
-import {buildChild, createApplication} from './build/build';
-import {socketListener} from './build/listen';
+import {withServer} from './build/build';
 
-let path;
-let listener;
-let socket;
-
-before(heavySetup(async () => {
-  path = await createApplication();
-  listener = await socketListener();
-  const {socketPath, socketServer} = listener;
-  await buildChild(
-    path,
-    {
-      args: ['-w'],
-      opts: {
-        env: {
-          FLECKS_ENV__flecks_server__start: true,
-          FLECKS_SERVER_TEST_SOCKET: socketPath,
-        },
-      },
-    },
-  );
-  socket = await socketServer.waitForSocket();
-}));
-
-async function restart() {
-  this.timeout(0);
+it('restarts when config keys change', withServer(async ({server, socket}) => {
   let restarted;
   const whatHappened = Promise.race([
-    socket.waitForHmr()
+    socket.waitForAction('hmr')
       .then(() => {
         restarted = false;
       })
@@ -47,7 +21,7 @@ async function restart() {
     }),
   ]);
   await writeFile(
-    join(path, 'build', 'flecks.yml'),
+    join(server.path, 'build', 'flecks.yml'),
     `
       '@flecks/build': {}
       '@flecks/core': {}
@@ -60,15 +34,10 @@ async function restart() {
   expect(restarted)
     .to.be.true;
   let config;
-  const before = Date.now();
-  await listener.socketServer.waitForSocket()
+  await server.socketServer.waitForSocket({task: this})
     .then(async (socket) => {
       ({payload: config} = await socket.send({type: 'config.get', payload: '@flecks/repl/server'}));
     });
-  // Had to rebuild...
-  this.timeout(2000 + (Date.now() - before));
   expect(config)
     .to.not.be.undefined;
-}
-
-it('restarts when config keys change', restart);
+}));

packages/server/test/server/config-update.js

@@ -1,38 +1,15 @@
 import {join} from 'path';
 
-import {heavySetup} from '@flecks/core/build/testing';
 import {writeFile} from '@flecks/core/server';
 import {expect} from 'chai';
 
-import {build, createApplication} from './build/build';
-import {socketListener} from './build/listen';
+import {withServer} from './build/build';
 
-let path;
-let socket;
-
-before(heavySetup(async () => {
-  path = await createApplication();
-  const {socketPath, socketServer} = await socketListener();
-  build(
-    path,
-    {
-      args: ['-h'],
-      opts: {
-        env: {
-          FLECKS_ENV__flecks_server__start: true,
-          FLECKS_SERVER_TEST_SOCKET: socketPath,
-        },
-      },
-    },
-  );
-  socket = await socketServer.waitForSocket();
-}));
-
-it('updates config', async () => {
+it('updates config', withServer(async ({server, socket}) => {
   expect((await socket.send({type: 'config.get', payload: '@flecks/core.id'})).payload)
     .to.equal('flecks');
   await writeFile(
-    join(path, 'build', 'flecks.yml'),
+    join(server.path, 'build', 'flecks.yml'),
     `
       '@flecks/build': {}
       '@flecks/core': {id: 'testing'}
@@ -40,8 +17,8 @@ it('updates config', async () => {
       'comm:./comm': {}
     `,
   );
-  await socket.waitForHmr();
+  await socket.waitForAction('hmr');
   expect((await socket.send({type: 'config.get', payload: '@flecks/core.id'})).payload)
     .to.equal('testing');
   await socket.send({type: 'exit'});
-});
+}));

packages/server/test/server/runtime-config-bootstrap.js

@@ -1,16 +1,25 @@
 import {mkdir} from 'fs/promises';
 import {join} from 'path';
 
-import {heavySetup} from '@flecks/core/build/testing';
 import {writeFile} from '@flecks/core/server';
 import {expect} from 'chai';
 
-import {build, createApplication, serverActions} from './build/build';
+import {withServer} from './build/build';
 
-let path;
-
-before(heavySetup(async () => {
-  path = await createApplication();
+it('propagates bootstrap config', withServer(
+  async ({server}) => {
+    const [{payload: foo}, {payload: blah}] = await server.actions([
+      {type: 'config.get', payload: 'server-only.foo'},
+      {type: 'config.get', payload: 'server-only.blah'},
+      {type: 'exit'},
+    ]);
+    expect(foo)
+      .to.equal('baz');
+    expect(blah)
+      .to.deep.equal({one: 2, three: 4});
+  },
+  {
+    beforeBuild: async ({path}) => {
       await mkdir(join(path, 'server-only', 'build'), {recursive: true});
       await writeFile(join(path, 'server-only', 'package.json'), '{}');
       const config = `
@@ -32,17 +41,6 @@ before(heavySetup(async () => {
           'server-only:./server-only': {foo: 'baz'}
         `,
       );
-  await build(path, {args: ['-d']});
-}));
-
-it('propagates bootstrap config', async () => {
-  const {results: [{payload: foo}, {payload: blah}]} = await serverActions(path, [
-    {type: 'config.get', payload: 'server-only.foo'},
-    {type: 'config.get', payload: 'server-only.blah'},
-    {type: 'exit'},
-  ]);
-  expect(foo)
-    .to.equal('baz');
-  expect(blah)
-    .to.deep.equal({one: 2, three: 4});
-});
+    },
+  },
+));

packages/server/test/server/runtime-config-override.js

@@ -1,15 +1,24 @@
 import {join} from 'path';
 
-import {heavySetup} from '@flecks/core/build/testing';
 import {writeFile} from '@flecks/core/server';
 import {expect} from 'chai';
 
-import {build, createApplication, serverActions} from './build/build';
+import {withServer} from './build/build';
 
-let path;
-
-before(heavySetup(async () => {
-  path = await createApplication();
+it('propagates bootstrap config', withServer(
+  async ({server}) => {
+    const [{payload: id}, {payload: foo}] = await server.actions([
+      {type: 'config.get', payload: '@flecks/core.id'},
+      {type: 'config.get', payload: 'comm.foo'},
+      {type: 'exit'},
+    ]);
+    expect(id)
+      .to.equal('testing');
+    expect(foo)
+      .to.equal('baz');
+  },
+  {
+    beforeBuild: async ({path}) => {
       await writeFile(
         join(path, 'build', 'flecks.yml'),
         `
@@ -19,17 +28,6 @@ before(heavySetup(async () => {
           'comm:./comm': {foo: 'baz'}
         `,
       );
-  await build(path, {args: ['-d']});
-}));
-
-it('propagates bootstrap config', async () => {
-  const {results: [{payload: id}, {payload: foo}]} = await serverActions(path, [
-    {type: 'config.get', payload: '@flecks/core.id'},
-    {type: 'config.get', payload: 'comm.foo'},
-    {type: 'exit'},
-  ]);
-  expect(id)
-    .to.equal('testing');
-  expect(foo)
-    .to.equal('baz');
-});
+    },
+  },
+));

packages/server/test/server/runtime-config-runtime.js

@@ -1,20 +1,12 @@
-import {heavySetup} from '@flecks/core/build/testing';
 import {expect} from 'chai';
 
-import {build, createApplication, serverActions} from './build/build';
+import {withServer} from './build/build';
 
-let path;
-
-before(heavySetup(async () => {
-  path = await createApplication();
-  await build(path, {args: ['-d']});
-}));
-
-it('propagates runtime config', async () => {
-  const {results: [{payload: foo}]} = await serverActions(path, [
+it('propagates runtime config', withServer(async ({server}) => {
+  const [{payload: foo}] = await server.actions([
     {type: 'config.get', payload: 'comm.foo'},
     {type: 'exit'},
   ]);
   expect(foo)
     .to.equal('bar');
-});
+}));

packages/server/test/server/runtime-connect.js

@@ -1,19 +1,16 @@
-import {heavySetup} from '@flecks/core/build/testing';
+import {processCode} from '@flecks/core/src/server';
 import {expect} from 'chai';
 
-import {build, createApplication, serverActions} from './build/build';
+import {withServer} from './build/build';
 
-let path;
-
-before(heavySetup(async () => {
-  path = await createApplication();
-  await build(path, {args: ['-d']});
-}));
-
-it('connects', async () => {
-  const {code} = await serverActions(path, [
+it('connects', withServer(
+  async ({server}) => {
+    const code = processCode(server.child);
+    await server.actions([
       {type: 'exit', payload: 42},
     ]);
-  expect(code)
+    expect(await code)
       .to.equal(42);
-});
+  },
+  {failOnErrorCode: false},
+));

packages/server/test/server/source-restart.js

@@ -1,37 +1,14 @@
 import {join} from 'path';
 
-import {heavySetup} from '@flecks/core/build/testing';
 import {writeFile} from '@flecks/core/server';
 import {expect} from 'chai';
 
-import {buildChild, createApplication} from './build/build';
-import {socketListener} from './build/listen';
+import {withServer} from './build/build';
 
-let path;
-let socket;
-
-before(heavySetup(async () => {
-  path = await createApplication();
-  const {socketPath, socketServer} = await socketListener();
-  await buildChild(
-    path,
-    {
-      args: ['-w'],
-      opts: {
-        env: {
-          FLECKS_ENV__flecks_server__start: true,
-          FLECKS_SERVER_TEST_SOCKET: socketPath,
-        },
-      },
-    },
-  );
-  socket = await socketServer.waitForSocket();
-}));
-
-it('restarts when root sources change', async () => {
+it('restarts when root sources change', withServer(async ({server, socket}) => {
   let restarted;
   const whatHappened = Promise.race([
-    socket.waitForHmr()
+    socket.waitForAction('hmr')
       .then(() => {
         restarted = false;
       })
@@ -43,8 +20,8 @@ it('restarts when root sources change', async () => {
       });
     }),
   ]);
-  await writeFile(join(path, 'comm', 'package.json'), '{}');
+  await writeFile(join(server.path, 'comm', 'package.json'), '{}');
   await whatHappened;
   expect(restarted)
     .to.be.true;
-});
+}));

packages/server/test/server/template/comm/src/server.js

@@ -1,10 +1,3 @@
-import cluster from 'cluster';
-import {createConnection} from 'net';
-
-const {
-  FLECKS_SERVER_TEST_SOCKET,
-} = process.env;
-
 export const hooks = {
   '@flecks/core.reload': (fleck, config) => {
     if ('comm' === fleck && 'fail' === config.foo) {
@@ -12,42 +5,10 @@ export const hooks = {
     }
   },
   '@flecks/core.hmr': async (path, M, flecks) => {
-    if (!flecks.socket) {
-      return;
-    }
-    flecks.socket.write(JSON.stringify({
+    const {socket} = flecks.server;
+    socket.write(JSON.stringify({
       type: 'hmr',
       payload: path,
     }));
   },
-  '@flecks/server.up': async (flecks) => {
-    if (!FLECKS_SERVER_TEST_SOCKET) {
-      return;
-    }
-    const socket = createConnection(FLECKS_SERVER_TEST_SOCKET);
-    if (cluster.isWorker) {
-      cluster.worker.on('disconnect', () => {
-        socket.end();
-      });
-    }
-    flecks.socket = socket;
-    socket.on('connect', () => {
-      socket.on('data', (data) => {
-        const {meta, payload, type} = JSON.parse(data);
-        switch (type) {
-          case 'config.get':
-            socket.write(JSON.stringify({
-              meta,
-              payload: flecks.get(payload),
-            }));
-            break;
-          case 'exit':
-            socket.end();
-            process.exit(payload);
-            break;
-          default:
-        }
-      });
-    });
-  },
 };

packages/web/build/flecks.bootstrap.js

@@ -1,15 +1,23 @@
 const {stat, unlink} = require('fs/promises');
-const {join} = require('path');
+const {
+  basename,
+  dirname,
+  extname,
+  join,
+  relative,
+} = require('path');
 
 const Build = require('@flecks/build/build/build');
 const {regexFromExtensions} = require('@flecks/build/src/server');
-const {binaryPath, spawnWith} = require('@flecks/core/src/server');
+const {binaryPath, glob, spawnWith} = require('@flecks/core/src/server');
 const MiniCssExtractPlugin = require('mini-css-extract-plugin');
 
 const {
   FLECKS_CORE_ROOT = process.cwd(),
 } = process.env;
 
+const tests = join(FLECKS_CORE_ROOT, 'test');
+
 exports.hooks = {
   '@flecks/build.config': async (target, config, env, argv, flecks) => {
     const isProduction = 'production' === argv.mode;
@@ -25,6 +33,19 @@ exports.hooks = {
         config.plugins.push(new MiniCssExtractPlugin({filename: 'assets/[name].css'}));
         break;
       }
+      case 'test': {
+        finalLoader = {loader: MiniCssExtractPlugin.loader};
+        config.plugins.push(new MiniCssExtractPlugin({filename: 'assets/[name].css'}));
+        (await glob(join(tests, 'client', '*.js')))
+          .forEach((path) => {
+            const entry = relative(tests, path);
+            config.entry[join(dirname(entry), basename(entry, extname(entry)))] = [
+              'source-map-support/register',
+              path,
+            ];
+          });
+        break;
+      }
       case 'web': {
         if (isProduction) {
           finalLoader = {loader: MiniCssExtractPlugin.loader};

packages/web/build/runtime.js

@@ -1,20 +1,18 @@
-const {access, readFile} = require('fs/promises');
+const {access} = require('fs/promises');
 const {
   basename,
-  dirname,
   extname,
   join,
 } = require('path');
 
 const Build = require('@flecks/build/build/build');
-const {glob} = require('@flecks/core/server');
 
 module.exports = async (config, env, argv, flecks) => {
   const buildFlecks = await Build.from({
     config: flecks.realiasedConfig,
     platforms: ['client', '!server'],
   });
-  const {resolver, flecks: webFlecks} = buildFlecks;
+  const {flecks: webFlecks} = buildFlecks;
   const paths = Object.keys(webFlecks)
     .filter((fleck) => !['@flecks/server'].includes(fleck));
   const styles = (
@@ -44,7 +42,6 @@ module.exports = async (config, env, argv, flecks) => {
   )
     .filter((filename) => !!filename);
   const runtime = await flecks.resolver.resolve(join('@flecks/web/runtime'));
-  const isProduction = 'production' === argv.mode;
   const resolvedPaths = (await Promise.all(
     paths.map(async (path) => [path, await flecks.resolver.resolve(path)]),
   ))
@@ -98,56 +95,4 @@ module.exports = async (config, env, argv, flecks) => {
   await buildFlecks.runtimeCompiler('web', config, env, argv);
   // Styles.
   config.entry.index.push(...styles);
-  // Tests.
-  if (!isProduction) {
-    const testEntries = (await Promise.all(
-      buildFlecks.roots
-        .map(async ([root, request]) => {
-          const tests = [];
-          const resolved = dirname(
-            await buildFlecks.resolver.resolve(join(request, 'package.json')),
-          );
-          const rootTests = await glob(join(resolved, 'test', '*.js'));
-          tests.push(...rootTests.map((test) => test.replace(resolved, root)));
-          const platformTests = await Promise.all(
-            buildFlecks.platforms.map((platform) => (
-              glob(join(resolved, 'test', platform, '*.js'))
-            )),
-          );
-          tests.push(...platformTests.flat().map((test) => test.replace(resolved, root)));
-          return [root, tests];
-        }),
-    ))
-      .filter(([, tests]) => tests.length > 0);
-    const tests = await resolver.resolve(
-      join('@flecks/web', 'server', 'build', 'tests'),
-    );
-    const testsSource = (await readFile(tests)).toString();
-    config.module.rules.push({
-      test: tests,
-      use: [
-        {
-          loader: runtime,
-          options: {
-            source: testsSource.replace(
-              "  await import('@flecks/web/tests');",
-              testEntries
-                .map(([root, tests]) => (
-                  [
-                    `  describe('${root}', () => {`,
-                    `    ${tests.map((test) => `require('${test}');`).join('\n    ')}`,
-                    '  });',
-                  ].join('\n')
-                )).join('\n\n'),
-            ),
-          },
-        },
-      ],
-    });
-    // Fix a little derp in mocha 10.2.0.
-    config.module.rules.push({
-      test: /mocha\/mocha\.js$/,
-      use: await flecks.resolver.resolve('@flecks/web/build/fix-mocha-critical-dependency'),
-    });
-  }
 };

packages/web/build/web.webpack.config.js

@@ -15,6 +15,7 @@ const WaitForManifestPlugin = require('./wait-for-manifest');
 
 const {
   FLECKS_CORE_ROOT = process.cwd(),
+  NODE_ENV,
 } = process.env;
 
 module.exports = async (env, argv, flecks) => {
@@ -70,12 +71,6 @@ module.exports = async (env, argv, flecks) => {
       entry: '@flecks/web/server/build/entry',
     }],
   ];
-  if (!isProduction) {
-    entries.push(['tests', {
-      entry: '@flecks/web/server/build/tests',
-      title: 'Testbed',
-    }]);
-  }
   await Promise.all(
     entries
       .map(async ([name, mainsConfig]) => {
@@ -195,6 +190,7 @@ module.exports = async (env, argv, flecks) => {
     },
     optimization: {
       minimize: isProduction,
+      nodeEnv: NODE_ENV,
       runtimeChunk: 'single',
       splitChunks: {
         cacheGroups: {

packages/web/package.json

@@ -18,6 +18,7 @@
     "access": "public"
   },
   "files": [
+    "client.js",
     "entry.js",
     "index.js",
     "runtime.js",
@@ -29,11 +30,13 @@
     "@babel/parser": "^7.17.0",
     "@babel/types": "^7.17.0",
     "@flecks/core": "^4.0.5",
+    "@flecks/server": "^4.0.5",
     "@webpack-cli/serve": "^2.0.5",
     "add-asset-html-webpack-plugin": "^6.0.0",
     "assert": "^2.1.0",
     "autoprefixer": "^10.4.17",
     "before-build-webpack": "^0.2.13",
+    "body-parser": "^1.20.2",
     "browserify-zlib": "^0.2.0",
     "buffer": "^6.0.3",
     "clean-webpack-plugin": "4.0.0",
@@ -42,8 +45,8 @@
     "express": "^4.17.1",
     "html-loader": "^4.2.0",
     "html-webpack-plugin": "^5.5.3",
-    "husky": "^9.0.7",
     "http-proxy": "^1.17.0",
+    "husky": "^9.0.7",
     "mini-css-extract-plugin": "^2.7.6",
     "mocha": "^10.2.0",
     "null-loader": "^4.0.1",
@@ -61,6 +64,7 @@
   },
   "devDependencies": {
     "@flecks/build": "^4.0.5",
-    "@flecks/fleck": "^4.0.5"
+    "@flecks/fleck": "^4.0.5",
+    "puppeteer": "^22.0.0"
   }
 }

packages/web/src/client.js

@@ -0,0 +1,24 @@
+export const mixin = (Flecks) => class FlecksWithWebClient extends Flecks {
+
+  constructor(runtime) {
+    super(runtime);
+    if ('test' !== process.env.NODE_ENV) {
+      return;
+    }
+    this.web = {
+      test: ({payload, type}) => (
+        fetch(
+          `/@flecks/web/testing?type=${type}`,
+          {
+            body: JSON.stringify(payload),
+            headers: {
+              'Content-Type': 'application/json',
+            },
+            method: 'POST',
+          },
+        )
+      ),
+    };
+  }
+
+};

packages/web/src/server/http.js

@@ -3,6 +3,7 @@ import {createServer, ServerResponse} from 'http';
 import {join} from 'path';
 
 import {D} from '@flecks/core';
+import bodyParser from 'body-parser';
 import compression from 'compression';
 import express from 'express';
 import httpProxy from 'http-proxy';
@@ -31,6 +32,8 @@ export const createHttpServer = async (flecks) => {
   const httpServer = createServer(app);
   httpServer.app = app;
   flecks.web.server = httpServer;
+  // Body parser.
+  app.use(bodyParser.json());
   // Compression.                                         heheh
   app.use(compression({level: 'production' === NODE_ENV ? 6 : 9}));
   // Socket connection.

packages/web/src/server/index.js

@@ -1,10 +1,15 @@
 import {configSource, inlineConfig} from './config';
 import {createHttpServer} from './http';
 
+const {
+  NODE_ENV,
+} = process.env;
+
 export {configSource};
 
 export const hooks = {
-  '@flecks/web.routes': (flecks) => [
+  '@flecks/web.routes': (flecks) => {
+    const routes = [
       {
         method: 'get',
         path: '/flecks.config.js',
@@ -13,7 +18,19 @@ export const hooks = {
           res.send(await configSource(flecks, req));
         },
       },
-  ],
+    ];
+    if ('test' === NODE_ENV) {
+      routes.push({
+        method: 'post',
+        path: '/@flecks/web/testing',
+        middleware: (req, res, next) => {
+          flecks.server.socket.write(JSON.stringify({payload: req.body, type: req.query.type}));
+          next();
+        },
+      });
+    }
+    return routes;
+  },
   '@flecks/web/server.stream.html': inlineConfig,
   '@flecks/server.up': (flecks) => createHttpServer(flecks),
 };

packages/web/test/client/up.js

@@ -0,0 +1,41 @@
+import {expect} from 'chai';
+
+import {withWeb} from '../helpers/with-web';
+
+let report;
+
+const options = {
+  beforeConnect: ({socket}) => {
+    report = socket.waitForAction('report');
+  },
+};
+
+it('brings a client up', withWeb(
+  async function test({
+    browser,
+    page,
+    response,
+  }) {
+    expect(response)
+      .to.not.be.null;
+    const {
+      payload: {
+        config,
+        id,
+        request,
+      },
+    } = await report;
+    const appMountSelector = await page.waitForSelector(`#${id}`);
+    expect(await appMountSelector?.evaluate((el) => el.textContent))
+      .to.equal('hello world');
+    const yepSelector = await page.waitForSelector(`.${request}`);
+    expect(await yepSelector?.evaluate((el) => el.textContent))
+      .to.equal('YEP');
+    expect(config)
+      .to.deep.equal({why: 'hello there'});
+    expect(request)
+      .to.equal('testing-value-value');
+    await browser.close();
+  },
+  options,
+));

packages/web/test/helpers/with-web.js

@@ -0,0 +1,69 @@
+import {startServer} from '@flecks/server/test/server/build/build';
+import puppeteer from 'puppeteer';
+
+export async function connectBrowser(url, options = {}) {
+  let previousTimeout;
+  const start = Date.now();
+  if (options.task) {
+    previousTimeout = options.task.timeout();
+    options.task.timeout(0);
+  }
+  const {timeout = 30000} = options;
+  const browser = await puppeteer.launch({
+    // For CI.
+    args: ['--no-sandbox'],
+  });
+  const page = await browser.newPage();
+  let response;
+  const handle = setTimeout(() => {
+    throw new Error(`timed out trying to connect browser to '${url}'!`);
+  }, timeout);
+  /* eslint-disable no-await-in-loop */
+  while (!response) {
+    try {
+      response = await page.goto(url, {...options, timeout: timeout - (Date.now() - start)});
+      if (response) {
+        break;
+      }
+    }
+    catch {
+      await new Promise((resolve) => {
+        setTimeout(resolve, 250);
+      });
+    }
+  }
+  /* eslint-enable no-await-in-loop */
+  clearTimeout(handle);
+  options.task?.timeout(previousTimeout + (Date.now() - start));
+  return {browser, page, response};
+}
+
+export function withWeb(task, options) {
+  return async function withWeb() {
+    const server = await startServer({...options, task: this});
+    const socket = await server.waitForSocket({...options, task: this});
+    if (options.beforeConnect) {
+      await options.beforeConnect({server, socket});
+    }
+    const start = Date.now();
+    const previousTimeout = this.timeout();
+    this.timeout(0);
+    const {payload: config} = await socket.send({type: 'config.get', payload: '@flecks/web'});
+    this.timeout(previousTimeout + (Date.now() - start));
+    const {browser, page, response} = await connectBrowser(
+      // @todo schema
+      `http://${config.public}`,
+      {
+        ...options,
+        task: this,
+      },
+    );
+    return task({
+      browser,
+      page,
+      response,
+      server,
+      socket,
+    });
+  };
+}

packages/web/test/server/template/build/flecks.yml

@@ -0,0 +1,4 @@
+'@flecks/core': {}
+'@flecks/server': {}
+'@flecks/web': {}
+'test:./test': {}

packages/web/test/server/template/package.json

@@ -0,0 +1 @@
+{}

packages/web/test/server/template/test/package.json

@@ -0,0 +1 @@
+{}

packages/web/test/server/template/test/src/client.js

@@ -0,0 +1,13 @@
+export const hooks = {
+  '@flecks/web/client.up': async (container, flecks) => {
+    container.innerHTML = 'hello world';
+    await flecks.web.test({
+      type: 'report',
+      payload: {
+        id: flecks.get('@flecks/web.appMountId'),
+        config: flecks.get('test'),
+        env: process.env.NODE_ENV,
+      },
+    });
+  },
+};

packages/web/test/server/template/test/src/index.js

@@ -0,0 +1,5 @@
+export const hooks = {
+  '@flecks/web.config': () => ({
+    why: 'hello there',
+  }),
+};

packages/web/test/server/template/test/src/server.js

@@ -0,0 +1,18 @@
+import {Readable} from 'stream';
+
+import {pipesink} from '@flecks/core/server';
+
+export const hooks = {
+  '@flecks/web/server.request.route': () => (req, res, next) => {
+    req.body.request += '-value';
+    next();
+  },
+  '@flecks/web/server.request.socket': () => (req, res, next) => {
+    req.body.request = 'testing-value';
+    next();
+  },
+  '@flecks/web/server.stream.html': async (stream, req) => {
+    const html = (await pipesink(stream)).toString();
+    return Readable.from(html.replace('<body>', `<body><p class="${req.body.request}">YEP</p>`));
+  },
+};