Fix broken main test (#950)

* migrate to Yarn 3

* fix broken cache test

* update CI node versions

* pin node-preload to 0.2.0

Due to yarnpkg/berry#1841

.github/workflows/ci.yml

@@ -20,10 +20,11 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        node-version: [10.x, 12.x, 14.x, 15.x]
+        node-version: [12.x, 14.x, 16.x]
         webpack-version: [latest, '4']
         include:
-          - node: 14.x
+          - node-version: 18.x
+            webpack-version: latest
             os: ubuntu-latest
             coverage: true
     runs-on: ${{ matrix.os }}
@@ -55,10 +56,10 @@ jobs:
       YARN_NODE_LINKER: node-modules
     steps:
       - uses: actions/checkout@v2
-      - name: Use Node.js 14.x
+      - name: Use Node.js latest
         uses: actions/setup-node@v1
         with:
-          node-version: 14.x
+          node-version: '*'
       - name: Install dependencies
         run: yarn
       - name: Install webpack 4

.yarnrc.yml

@@ -1 +1 @@
-yarnPath: .yarn/releases/yarn-2.3.3.cjs
+yarnPath: .yarn/releases/yarn-3.2.3.cjs

package.json

@@ -120,5 +120,8 @@
       "node ./scripts/yarn-install.js",
       "git add yarn.lock"
     ]
+  },
+  "resolutions": {
+    "nyc/node-preload": "0.2.0"
   }
 }

test/cache.test.js

@@ -27,6 +27,10 @@ const globalConfig = {
   },
 };
 
+// Cache filename is either SHA256 or MD5 hash
+const UNCOMPRESSED_CACHE_FILE_REGEX = /^[0-9a-f]{32}(?:[0-9a-f]{32})?\.json$/;
+const CACHE_FILE_REGEX = /^[0-9a-f]{32}(?:[0-9a-f]{32})?\.json\.gz$/;
+
 // Create a separate directory for each test so that the tests
 // can run in parallel
 
@@ -109,7 +113,7 @@ test.serial.cb(
       t.deepEqual(stats.compilation.warnings, []);
 
       fs.readdir(defaultCacheDir, (err, files) => {
-        files = files.filter(file => /\b[0-9a-f]{5,40}\.json\.gz\b/.test(file));
+        files = files.filter(file => CACHE_FILE_REGEX.test(file));
 
         t.is(err, null);
         t.true(files.length > 0);
@@ -146,7 +150,7 @@ test.serial.cb(
       t.is(err, null);
 
       fs.readdir(defaultCacheDir, (err, files) => {
-        files = files.filter(file => /\b[0-9a-f]{5,40}\b/.test(file));
+        files = files.filter(file => UNCOMPRESSED_CACHE_FILE_REGEX.test(file));
 
         t.is(err, null);
         t.true(files.length > 0);
@@ -180,7 +184,7 @@ test.serial.cb(
       t.deepEqual(stats.compilation.warnings, []);
 
       fs.readdir(defaultCacheDir, (err, files) => {
-        files = files.filter(file => /\b[0-9a-f]{5,40}\.json\.gz\b/.test(file));
+        files = files.filter(file => CACHE_FILE_REGEX.test(file));
 
         t.is(err, null);