test: add multi-token usage tests for getOctokit

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: salmanmkc

__test__/async-function.test.ts

@@ -20,6 +20,82 @@ describe('callAsyncFunction', () => {
     expect(result).toEqual('secondary-client')
   })
 
+  test('getOctokit creates client independent from github', async () => {
+    const github = {rest: {issues: 'primary'}}
+    const getOctokit = jest.fn().mockReturnValue({rest: {issues: 'secondary'}})
+
+    const result = await callAsyncFunction(
+      {github, getOctokit} as any,
+      `
+        const secondary = getOctokit('other-token')
+        return {
+          primary: github.rest.issues,
+          secondary: secondary.rest.issues,
+          different: github !== secondary
+        }
+      `
+    )
+
+    expect(result).toEqual({
+      primary: 'primary',
+      secondary: 'secondary',
+      different: true
+    })
+    expect(getOctokit).toHaveBeenCalledWith('other-token')
+  })
+
+  test('getOctokit passes options through', async () => {
+    const getOctokit = jest.fn().mockReturnValue('client-with-opts')
+
+    const result = await callAsyncFunction(
+      {getOctokit} as any,
+      `return getOctokit('my-token', { baseUrl: 'https://ghes.example.com/api/v3' })`
+    )
+
+    expect(getOctokit).toHaveBeenCalledWith('my-token', {
+      baseUrl: 'https://ghes.example.com/api/v3'
+    })
+    expect(result).toEqual('client-with-opts')
+  })
+
+  test('getOctokit supports plugins', async () => {
+    const getOctokit = jest.fn().mockReturnValue('client-with-plugins')
+
+    const result = await callAsyncFunction(
+      {getOctokit} as any,
+      `return getOctokit('my-token', { previews: ['v3'] }, 'pluginA', 'pluginB')`
+    )
+
+    expect(getOctokit).toHaveBeenCalledWith(
+      'my-token',
+      {previews: ['v3']},
+      'pluginA',
+      'pluginB'
+    )
+    expect(result).toEqual('client-with-plugins')
+  })
+
+  test('multiple getOctokit calls produce independent clients', async () => {
+    const getOctokit = jest
+      .fn()
+      .mockReturnValueOnce({id: 'client-a'})
+      .mockReturnValueOnce({id: 'client-b'})
+
+    const result = await callAsyncFunction(
+      {getOctokit} as any,
+      `
+        const a = getOctokit('token-a')
+        const b = getOctokit('token-b')
+        return { a: a.id, b: b.id, different: a !== b }
+      `
+    )
+
+    expect(getOctokit).toHaveBeenCalledTimes(2)
+    expect(getOctokit).toHaveBeenNthCalledWith(1, 'token-a')
+    expect(getOctokit).toHaveBeenNthCalledWith(2, 'token-b')
+    expect(result).toEqual({a: 'client-a', b: 'client-b', different: true})
+  })
+
   test('throws on ReferenceError', async () => {
     expect.assertions(1)