Run time zone tests with Bun (#3680)

.github/workflows/tz_tests.yaml

@@ -0,0 +1,14 @@
+name: Time zone tests
+
+on: [push, pull_request]
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: oven-sh/setup-bun@v1
+      - run: bun install
+      - run: bun ./scripts/test/tzOffset.ts
+      - run: bun ./scripts/test/tzIANA.ts

package.json

@@ -6025,6 +6025,7 @@
     "@octokit/core": "^3.2.5",
     "@size-limit/esbuild": "^11.0.1",
     "@size-limit/file": "^11.0.1",
+    "@types/bun": "^1.0.3",
     "@types/lodash": "^4.14.202",
     "@types/node": "^20.10.2",
     "@types/sinon": "^9.0.6",
@@ -6033,6 +6034,7 @@
     "@vitest/browser": "^0.34.6",
     "@vitest/coverage-v8": "^0.34.6",
     "babel-plugin-add-import-extension": "^1.6.0",
+    "bun": "^1.0.25",
     "cloc": "^2.2.0",
     "coveralls": "^3.1.1",
     "eslint": "^8.55.0",

scripts/test/_lib/queue.ts

@@ -0,0 +1,32 @@
+export function promiseQueue<Type>(
+  promises: Array<() => Promise<Type>>,
+  max: number,
+): Promise<Type[]> {
+  const queue: Array<() => void> = [];
+
+  const all = Promise.all<Type>(
+    new Array(promises.length).fill(null).map((_, index) => {
+      const promise = new Promise<void>((resolve) => {
+        queue[index] = () => {
+          // Trigger the queue promise
+          resolve();
+          // Return it, so the worker function can wait for
+          return promise;
+        };
+      }).then(() => promises[index]());
+      return promise;
+    }),
+  );
+
+  async function next() {
+    const promise = queue.shift();
+    if (!promise) return;
+    await promise();
+    return next();
+  }
+
+  // Create the worker functions
+  Promise.all(new Array(max).fill(null).map(() => next()));
+
+  return all;
+}

scripts/test/_lib/tz.ts

@@ -0,0 +1,23 @@
+import { $ } from "bun";
+import { availableParallelism } from "node:os";
+import { promiseQueue } from "./queue";
+
+export async function testTimeZone(timeZone: string) {
+  const { stderr, exitCode } =
+    await $`TZ=${timeZone} bun test ./src/**/test.ts`.quiet();
+
+  if (exitCode) {
+    console.log(stderr.toString());
+    console.log(`⛔ Tests for the time zone ${timeZone}`);
+    process.exit(exitCode);
+  }
+
+  console.log(`✅ Tests for the time zone ${timeZone}`);
+}
+
+export function testTimeZones(timeZones: string[]) {
+  return promiseQueue(
+    timeZones.map((timeZone) => () => testTimeZone(timeZone)),
+    availableParallelism(),
+  );
+}