test: make minimal-config test pass locally on node 22

See comments

I also made it fail immediately when an assertion fails. As is, we
weren't calling the done callback in these cases, so you had to wait 30s
for the test to time out.

Author: serhalp

packages/gatsby/cache-dir/__tests__/minimal-config.js

@@ -25,8 +25,18 @@ it(`Builds cache-dir with minimal config`, done => {
   })
 
   spawn.on(`close`, function () {
-    expect(stderr).toEqual(``)
-    expect(stdout).not.toEqual(``)
+    try {
+      // This is a little weird but this node.js deprecation warning is printed on node 22+ BUT we
+      // fully suppress all node.js warnings in CI for some reason. This pattern allows either
+      // nothing or just this warning to be printed to stderr, allowing it to pass locally and in CI.
+      expect(stderr).toMatch(
+        /^(|\(node:\d+\) \[DEP0180\] DeprecationWarning: fs\.Stats constructor is deprecated\.\s+\(Use `node --trace-deprecation \.\.\.` to show where the warning was created\)[\s\n]*)$/s
+      )
+      expect(stdout).not.toEqual(``)
+    } catch (err) {
+      done(err)
+      return
+    }
     done()
   })
 }, 30000)