Merge PR #1 from 'nodech/pkg-ci'

.eslintrc.json

@@ -39,7 +39,8 @@
       },
       "rules": {
         "max-len": "off",
-        "prefer-arrow-callback": "off"
+        "prefer-arrow-callback": "off",
+        "no-return-assign": "off"
       }
     }
   ],

.github/workflows/build.yml

@@ -0,0 +1,44 @@
+name: Build
+
+on: [push, pull_request]
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Setup
+      uses: actions/setup-node@v3
+      with:
+        node-version: 20.x
+
+    - name: Install tools
+      run: npm install --location=global bslint
+
+    - name: Install dependencies
+      run: npm install
+
+    - name: Lint
+      run: npm run lint
+
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Setup
+      uses: actions/setup-node@v3
+      with:
+        node-version: 20.x
+
+    - name: Install dependencies
+      run: npm install
+
+    - name: Test
+      run: npm run test
+

package.json

@@ -15,7 +15,7 @@
   "author": "Christopher Jeffrey <chjjeffrey@gmail.com>",
   "main": "./lib/bmutex.js",
   "scripts": {
-    "lint": "eslint lib/ test/ || exit 0",
+    "lint": "eslint lib/ test/",
     "test": "bmocha --reporter spec test/*-test.js"
   },
   "dependencies": {

test/lock-test.js

@@ -0,0 +1,41 @@
+'use strict';
+
+const assert = require('bsert');
+const {Lock} = require('..');
+
+describe('Lock', function() {
+  it('should resolve queue in order', async () => {
+    const genJob = (id) => {
+      return new Promise((resolve) => {
+        setTimeout(() => {
+          resolve(id);
+        }, randomRange(10, 100));
+      });
+    };
+
+    const locker = new Lock();
+    const results = [];
+    const promises = [];
+
+    const runJob = async (id) => {
+      const unlock = await locker.lock();
+
+      try {
+        results.push(await genJob(id));
+      } finally {
+        unlock();
+      }
+    };
+
+    for (let i = 0; i < 10; i++)
+      promises.push(runJob(i));
+
+    await Promise.all(promises);
+
+    assert.deepStrictEqual(results, [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
+  });
+});
+
+function randomRange(min, max) {
+  return Math.floor(Math.random() * (max - min) + min);
+}