fix: recursively autospy module object

packages/mocker/src/automocker.ts

@@ -134,9 +134,28 @@ export function mockObject(
         continue
       }
 
+      if (options.type === 'autospy' && type === 'Module') {
+        // Replace with clean object to recursively autospy exported module objects:
+        //   export * as ns from "./ns"
+        // or
+        //   import * as ns from "./ns"
+        //   export { ns }
+        const exports = Object.create(null)
+        Object.defineProperty(exports, Symbol.toStringTag, {
+          value: 'Module',
+          configurable: true,
+          writable: true,
+        })
+        try {
+          newContainer[property] = exports
+        }
+        catch {
+          continue
+        }
+      }
       // Sometimes this assignment fails for some unknown reason. If it does,
       // just move along.
-      if (!define(newContainer, property, isFunction || options.type === 'autospy' ? value : {})) {
+      else if (!define(newContainer, property, isFunction || options.type === 'autospy' ? value : {})) {
         continue
       }
 

test/core/src/mocks/autospying-namespace/index.ts

@@ -0,0 +1 @@
+export * as NamespaceTarget from './namespaceTarget.js'

test/core/src/mocks/autospying-namespace/namespaceTarget.ts

@@ -0,0 +1 @@
+export const computeSquare = (n: number) => n * n

test/core/test/mocking/autospying.test.ts

@@ -1,10 +1,12 @@
 import axios from 'axios'
 import { expect, test, vi } from 'vitest'
 import { getAuthToken } from '../../src/env'
+import * as NamespaceModule from '../../src/mocks/autospying-namespace/index.js'
 
 vi.mock(import('../../src/env'), { spy: true })
 
 vi.mock('axios', { spy: true })
+vi.mock('../../src/mocks/autospying-namespace/index.js', { spy: true })
 
 test('getAuthToken is spied', async () => {
   import.meta.env.AUTH_TOKEN = '123'
@@ -23,3 +25,9 @@ test('package in __mocks__ has lower priority', async () => {
   expect(axios.isAxiosError(new Error('test'))).toBe(false)
   expect(axios.isAxiosError).toHaveBeenCalled()
 })
+
+test('spies on namespace re-exports', async () => {
+  expect(vi.isMockFunction(NamespaceModule.NamespaceTarget.computeSquare)).toBe(true)
+  expect(NamespaceModule.NamespaceTarget.computeSquare(5)).toBe(25)
+  expect(NamespaceModule.NamespaceTarget.computeSquare).toHaveBeenCalledTimes(1)
+})