fix(jest-runtime): bind jest.isolateModulesAsync to this

Author: tjenkinson

CHANGELOG.md

@@ -6,6 +6,7 @@
 
 ### Fixes
 
+- `[jest-runtime]` Bind `jest.isolateModulesAsync` to `this` ([#14083](https://github.com/facebook/jest/pull/14083))
 - `[jest-config]` Handle frozen config object ([#14054](https://github.com/facebook/jest/pull/14054))
 - `[jest-core]` Always use workers in watch mode to avoid crashes ([#14059](https://github.com/facebook/jest/pull/14059)).
 - `[jest-environment-jsdom, jest-environment-node]` Fix assignment of `customExportConditions` via `testEnvironmentOptions` when custom env subclass defines a default value ([#13989](https://github.com/facebook/jest/pull/13989))

packages/jest-runtime/src/__tests__/runtime_jest_fn.js

@@ -76,4 +76,56 @@ describe('Runtime', () => {
       expect(root.jest.isEnvironmentTornDown()).toBe(true);
     });
   });
+
+  describe('jest.isolateModules', () => {
+    it('isolates the modules', async () => {
+      const runtime = await createRuntime(__filename);
+      const root = runtime.requireModule(runtime.__mockRootPath);
+      root.jest.isolateModules(() => {
+        const exports = runtime.requireModuleOrMock(
+          runtime.__mockRootPath,
+          'ModuleWithState',
+        );
+        expect(exports.getState()).toBe(1);
+        exports.increment();
+        expect(exports.getState()).toBe(2);
+      });
+
+      root.jest.isolateModules(() => {
+        const exports = runtime.requireModuleOrMock(
+          runtime.__mockRootPath,
+          'ModuleWithState',
+        );
+        expect(exports.getState()).toBe(1);
+        exports.increment();
+        expect(exports.getState()).toBe(2);
+      });
+    });
+  });
+
+  describe('jest.isolateModulesAsync', () => {
+    it('isolates the modules', async () => {
+      const runtime = await createRuntime(__filename);
+      const root = runtime.requireModule(runtime.__mockRootPath);
+      await root.jest.isolateModulesAsync(async () => {
+        const exports = runtime.requireModuleOrMock(
+          runtime.__mockRootPath,
+          'ModuleWithState',
+        );
+        expect(exports.getState()).toBe(1);
+        exports.increment();
+        expect(exports.getState()).toBe(2);
+      });
+
+      await root.jest.isolateModulesAsync(async () => {
+        const exports = runtime.requireModuleOrMock(
+          runtime.__mockRootPath,
+          'ModuleWithState',
+        );
+        expect(exports.getState()).toBe(1);
+        exports.increment();
+        expect(exports.getState()).toBe(2);
+      });
+    });
+  });
 });

packages/jest-runtime/src/index.ts

@@ -2197,6 +2197,9 @@ export default class Runtime {
       this.isolateModules(fn);
       return jestObject;
     };
+    const isolateModulesAsync = (fn: () => Promise<void>): Promise<void> => {
+      return this.isolateModulesAsync(fn);
+    };
     const fn = this._moduleMocker.fn.bind(this._moduleMocker);
     const spyOn = this._moduleMocker.spyOn.bind(this._moduleMocker);
     const mocked =
@@ -2303,7 +2306,7 @@ export default class Runtime {
       isEnvironmentTornDown: () => this.isTornDown,
       isMockFunction: this._moduleMocker.isMockFunction,
       isolateModules,
-      isolateModulesAsync: this.isolateModulesAsync,
+      isolateModulesAsync,
       mock,
       mocked,
       now: () => _getFakeTimers().now(),