ci: add NO_CONCURRENT support for testing on Windows and resource-constrained systems

Author: Xunnamius

jest.config.js

@@ -9,7 +9,14 @@ module.exports = {
   testEnvironment: 'node',
   testRunner: 'jest-circus/runner',
   // ? 24h if debugging so MMS and other tools don't choke, otherwise 1m
-  testTimeout: 1000 * 60 * (process.env.VSCODE_INSPECTOR_OPTIONS ? 60 * 24 : 1),
+  testTimeout:
+    1000 *
+    60 *
+    (process.env.VSCODE_INSPECTOR_OPTIONS
+      ? 60 * 24
+      : process.platform == 'win32'
+      ? 5
+      : 1),
   // ? Minimum of 10 concurrent tests executed at once; maximum of cpu cores - 1
   maxConcurrency: Math.max(require('node:os').cpus().length - 1, 10),
   verbose: false,

test/integration/integration-node-interop.test.ts

@@ -62,7 +62,8 @@ for (const esm of [true, false] as const) {
       debug(`registered test: ${title}`);
 
       // eslint-disable-next-line jest/valid-title
-      it.concurrent(title, async () => {
+      (process.env.NO_CONCURRENT ? it : it.concurrent)(title, async () => {
+        // eslint-disable-next-line jest/no-standalone-expect
         expect.hasAssertions();
 
         debug(`started running test: ${title}`);

test/integration/integration-node-smoke.test.ts

@@ -62,7 +62,8 @@ for (const [babelPkg, ...otherBabelPkgs] of BABEL_VERSIONS_UNDER_TEST) {
       debug(`registered test: ${title}`);
 
       // eslint-disable-next-line jest/valid-title
-      it.concurrent(title, async () => {
+      (process.env.NO_CONCURRENT ? it : it.concurrent)(title, async () => {
+        // eslint-disable-next-line jest/no-standalone-expect
         expect.hasAssertions();
 
         debug(`started running test: ${title}`);