chore: add reproduction for #9305 (#9327)

Author: sheremet-va

packages/runner/src/types/tasks.ts

@@ -536,7 +536,7 @@ export type TestAPI<ExtraContext = object> = ChainableTestAPI<ExtraContext>
           : never;
     }>
     scoped: (
-      fixtures: Fixtures<Partial<ExtraContext>>,
+      fixtures: Partial<Fixtures<ExtraContext>>,
     ) => void
   }
 
@@ -577,7 +577,7 @@ export type Fixture<T, K extends keyof T, ExtraContext = object> = ((
     | (T[K] extends any
       ? FixtureFn<T, K, Omit<ExtraContext, Exclude<keyof T, K>>>
       : never)
-export type Fixtures<T extends Record<string, any>, ExtraContext = object> = {
+export type Fixtures<T, ExtraContext = object> = {
   [K in keyof T]:
     | Fixture<T, K, ExtraContext & TestContext>
     | [Fixture<T, K, ExtraContext & TestContext>, FixtureOptions?];

test/core/test/test-extend.test.ts

@@ -488,6 +488,30 @@ describe('test.scoped repro #7813', () => {
   })
 })
 
+describe('test.scoped repro #9305', () => {
+  const extendedTest = test.extend<{
+    a: number
+    b: number
+    numbers: number[]
+  }>({
+    a: 1,
+    b: 2,
+    numbers: async ({ a }, use) => use([a]),
+  })
+
+  describe('suite fails', () => {
+    extendedTest.scoped({
+      numbers: async ({ a, b }, use) => use([a, b]),
+    })
+
+    extendedTest.fails('test fails', async ({
+      numbers,
+    }) => {
+      expect(numbers).toStrictEqual([1, 2]) // fails because numbers is [undefined, undefined]
+    })
+  })
+})
+
 describe('suite with timeout', () => {
   test.extend({})('timeout is inherited from suite', ({ task }) => {
     expect(task.timeout).toBe(100)