fix: worker state (#15610)

Author: phawxby

CHANGELOG.md

@@ -105,6 +105,7 @@
   - Adds a `conditional/check` to ensure the argument passed to `expect` is an object.
   - Add unit tests for new `ObjectContaining` behavior.
   - Remove `invalid/wrong` test case assertions for `ObjectContaining`.
+- `[jest-worker]` Addresses incorrect state on exit ([#15610](https://github.com/jestjs/jest/pull/15610))
 
 ### Performance
 

packages/jest-worker/src/workers/ChildProcessWorker.ts

@@ -233,7 +233,8 @@ export default class ChildProcessWorker
       ) {
         if (
           this.state === WorkerStates.OK ||
-          this.state === WorkerStates.STARTING
+          this.state === WorkerStates.STARTING ||
+          this.state === WorkerStates.SHUT_DOWN
         ) {
           this.state = WorkerStates.OUT_OF_MEMORY;
         }

packages/jest-worker/src/workers/WorkerAbstract.ts

@@ -125,8 +125,7 @@ export default abstract class WorkerAbstract
    * killed off.
    */
   protected _shutdown(): void {
-    // eslint-disable-next-line @typescript-eslint/no-unused-expressions
-    this.state === WorkerStates.SHUT_DOWN;
+    this.state = WorkerStates.SHUT_DOWN;
 
     // End the permanent stream so the merged stream end too
     if (this._fakeStream) {