diff --git a/__tests__/backend/utils/SafeDriveService.test.ts b/__tests__/backend/utils/SafeDriveService.test.ts
index 577abec2..8c6681f0 100644
--- a/__tests__/backend/utils/SafeDriveService.test.ts
+++ b/__tests__/backend/utils/SafeDriveService.test.ts
@@ -1,22 +1,10 @@
 import { expect, test } from "@jest/globals";
 
 import { SafeDriveService_ } from "../../../src/backend/utils/SafeDriveService";
-import {
-  mockedCommentsCollection,
-  mockedDrive,
-  mockedDrivesCollection,
-  mockedFilesCollection,
-  mockedRepliesCollection,
-} from "../../test-utils/gas-stubs";
+import { mockedDrive } from "../../test-utils/gas-stubs";
 
 test("SafeDriveService constructs correctly", () => {
-  global.Drive = {
-    ...mockedDrive(),
-    Comments: mockedCommentsCollection(),
-    Drives: mockedDrivesCollection(),
-    Files: mockedFilesCollection(),
-    Replies: mockedRepliesCollection(),
-  };
+  global.Drive = mockedDrive();
 
   expect(() => {
     new SafeDriveService_();
diff --git a/__tests__/backend/utils/SafeDriveService/SafeCommentsCollection.test.ts b/__tests__/backend/utils/SafeDriveService/SafeCommentsCollection.test.ts
index ad69146f..6fb388fb 100644
--- a/__tests__/backend/utils/SafeDriveService/SafeCommentsCollection.test.ts
+++ b/__tests__/backend/utils/SafeDriveService/SafeCommentsCollection.test.ts
@@ -2,16 +2,10 @@ import { expect, test } from "@jest/globals";
 import { mocked } from "jest-mock";
 
 import { SafeCommentsCollection_ } from "../../../../src/backend/utils/SafeDriveService/SafeCommentsCollection";
-import {
-  mockedCommentsCollection,
-  mockedDrive,
-} from "../../../test-utils/gas-stubs";
+import { mockedDrive } from "../../../test-utils/gas-stubs";
 
 test("SafeCommentsCollection constructs correctly", () => {
-  global.Drive = {
-    ...mockedDrive(),
-    Comments: mockedCommentsCollection(),
-  };
+  global.Drive = mockedDrive();
 
   expect(() => {
     new SafeCommentsCollection_();
@@ -37,7 +31,7 @@ test("create works", () => {
     ],
   };
 
-  global.Drive.Comments = mockedCommentsCollection();
+  global.Drive = mockedDrive();
   const create = mocked(global.Drive.Comments).create.mockReturnValueOnce(
     comment,
   );
@@ -69,7 +63,7 @@ test("create throws an error on an invalid comment", () => {
     ],
   };
 
-  global.Drive.Comments = mockedCommentsCollection();
+  global.Drive = mockedDrive();
   const create = mocked(global.Drive.Comments).create.mockReturnValueOnce(
     comment,
   );
@@ -123,7 +117,7 @@ test("list works", () => {
     ],
   };
 
-  global.Drive.Comments = mockedCommentsCollection();
+  global.Drive = mockedDrive();
   const list = mocked(global.Drive.Comments).list.mockReturnValueOnce(
     commentList,
   );
@@ -177,7 +171,7 @@ test("list works with optional arguments", () => {
     ],
   };
 
-  global.Drive.Comments = mockedCommentsCollection();
+  global.Drive = mockedDrive();
   const list = mocked(global.Drive.Comments).list.mockReturnValueOnce(
     commentList,
   );
@@ -238,7 +232,7 @@ test("list throws an error on an invalid comment", () => {
     ],
   };
 
-  global.Drive.Comments = mockedCommentsCollection();
+  global.Drive = mockedDrive();
   const list = mocked(global.Drive.Comments).list.mockReturnValueOnce(
     commentList,
   );
@@ -257,7 +251,7 @@ test("list throws an error on an invalid comment list", () => {
     nextPageToken: "TOKEN",
   };
 
-  global.Drive.Comments = mockedCommentsCollection();
+  global.Drive = mockedDrive();
   const list = mocked(global.Drive.Comments).list.mockReturnValueOnce(
     commentList,
   );
@@ -302,7 +296,7 @@ test("list throws an error on missing replies", () => {
     ],
   };
 
-  global.Drive.Comments = mockedCommentsCollection();
+  global.Drive = mockedDrive();
   const list = mocked(global.Drive.Comments).list.mockReturnValueOnce(
     commentList,
   );
@@ -355,7 +349,7 @@ test("list throws an error on an invalid reply", () => {
     ],
   };
 
-  global.Drive.Comments = mockedCommentsCollection();
+  global.Drive = mockedDrive();
   const list = mocked(global.Drive.Comments).list.mockReturnValueOnce(
     commentList,
   );
diff --git a/__tests__/backend/utils/SafeDriveService/SafeDrivesCollection.test.ts b/__tests__/backend/utils/SafeDriveService/SafeDrivesCollection.test.ts
index 22853d1e..7b21090e 100644
--- a/__tests__/backend/utils/SafeDriveService/SafeDrivesCollection.test.ts
+++ b/__tests__/backend/utils/SafeDriveService/SafeDrivesCollection.test.ts
@@ -2,16 +2,10 @@ import { expect, test } from "@jest/globals";
 import { mocked } from "jest-mock";
 
 import { SafeDrivesCollection_ } from "../../../../src/backend/utils/SafeDriveService/SafeDrivesCollection";
-import {
-  mockedDrive,
-  mockedDrivesCollection,
-} from "../../../test-utils/gas-stubs";
+import { mockedDrive } from "../../../test-utils/gas-stubs";
 
 test("SafeDrivesCollection constructs correctly", () => {
-  global.Drive = {
-    ...mockedDrive(),
-    Drives: mockedDrivesCollection(),
-  };
+  global.Drive = mockedDrive();
 
   expect(() => {
     new SafeDrivesCollection_();
@@ -32,7 +26,7 @@ test("list works", () => {
     ],
   };
 
-  global.Drive.Drives = mockedDrivesCollection();
+  global.Drive = mockedDrive();
   const list = mocked(global.Drive.Drives).list.mockReturnValueOnce(driveList);
 
   const drivesCollection = new SafeDrivesCollection_();
@@ -57,7 +51,7 @@ test("list works with optional parameters", () => {
     ],
   };
 
-  global.Drive.Drives = mockedDrivesCollection();
+  global.Drive = mockedDrive();
   const list = mocked(global.Drive.Drives).list.mockReturnValueOnce(driveList);
 
   const drivesCollection = new SafeDrivesCollection_();
@@ -98,7 +92,7 @@ test("list works with selective fields", () => {
     ],
   };
 
-  global.Drive.Drives = mockedDrivesCollection();
+  global.Drive = mockedDrive();
   const list = mocked(global.Drive.Drives)
     .list.mockReturnValueOnce(driveList1)
     .mockReturnValueOnce(driveList2);
@@ -131,7 +125,7 @@ test("list throws an error on an invalid drive", () => {
     ],
   };
 
-  global.Drive.Drives = mockedDrivesCollection();
+  global.Drive = mockedDrive();
   const list = mocked(global.Drive.Drives).list.mockReturnValueOnce(driveList);
 
   const drivesCollection = new SafeDrivesCollection_();
@@ -143,7 +137,7 @@ test("list throws an error on an invalid drive", () => {
 });
 
 test("list throws an error on an invalid drive list", () => {
-  global.Drive.Drives = mockedDrivesCollection();
+  global.Drive = mockedDrive();
   const list = mocked(global.Drive.Drives).list.mockReturnValueOnce({});
 
   const drivesCollection = new SafeDrivesCollection_();
diff --git a/__tests__/backend/utils/SafeDriveService/SafeFilesCollection.test.ts b/__tests__/backend/utils/SafeDriveService/SafeFilesCollection.test.ts
index e9684235..2557321d 100644
--- a/__tests__/backend/utils/SafeDriveService/SafeFilesCollection.test.ts
+++ b/__tests__/backend/utils/SafeDriveService/SafeFilesCollection.test.ts
@@ -2,16 +2,10 @@ import { expect, test } from "@jest/globals";
 import { mocked } from "jest-mock";
 
 import { SafeFilesCollection_ } from "../../../../src/backend/utils/SafeDriveService/SafeFilesCollection";
-import {
-  mockedDrive,
-  mockedFilesCollection,
-} from "../../../test-utils/gas-stubs";
+import { mockedDrive } from "../../../test-utils/gas-stubs";
 
 test("SafeFilesCollection constructs correctly", () => {
-  global.Drive = {
-    ...mockedDrive(),
-    Files: mockedFilesCollection(),
-  };
+  global.Drive = mockedDrive();
 
   expect(() => {
     new SafeFilesCollection_();
@@ -29,7 +23,7 @@ test("copy works", () => {
     name: "FILE_TITLE",
   };
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const copy = mocked(global.Drive.Files).copy.mockReturnValueOnce(file);
 
   const filesCollection = new SafeFilesCollection_();
@@ -53,7 +47,7 @@ test("copy works with optional arguments", () => {
     name: "FILE_TITLE",
   };
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const copy = mocked(global.Drive.Files).copy.mockReturnValueOnce(file);
 
   const filesCollection = new SafeFilesCollection_();
@@ -76,7 +70,7 @@ test("copy works with selective fields", () => {
     mimeType: "text/plain",
   };
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const copy = mocked(global.Drive.Files).copy.mockReturnValueOnce(file);
 
   const filesCollection = new SafeFilesCollection_();
@@ -109,7 +103,7 @@ test("copy throws and error on invalid file", () => {
     name: "FILE_TITLE",
   };
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const copy = mocked(global.Drive.Files).copy.mockReturnValueOnce(file);
 
   const filesCollection = new SafeFilesCollection_();
@@ -133,7 +127,7 @@ test("get works", () => {
     name: "FILE_TITLE",
   };
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const get = mocked(global.Drive.Files).get.mockReturnValueOnce(file);
 
   const filesCollection = new SafeFilesCollection_();
@@ -156,7 +150,7 @@ test("get works with optional arguments", () => {
     name: "FILE_TITLE",
   };
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const get = mocked(global.Drive.Files).get.mockReturnValueOnce(file);
 
   const filesCollection = new SafeFilesCollection_();
@@ -174,7 +168,7 @@ test("get works with selective fields", () => {
     name: "FILE_TITLE",
   };
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const get = mocked(global.Drive.Files).get.mockReturnValueOnce(file);
 
   const filesCollection = new SafeFilesCollection_();
@@ -196,7 +190,7 @@ test("get throws an error on invalid file", () => {
     name: "FILE_TITLE",
   };
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const get = mocked(global.Drive.Files).get.mockReturnValueOnce(file);
 
   const filesCollection = new SafeFilesCollection_();
@@ -219,7 +213,7 @@ test("create works", () => {
     name: "FILE_TITLE",
   };
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const create = mocked(global.Drive.Files).create.mockReturnValueOnce(file);
 
   const filesCollection = new SafeFilesCollection_();
@@ -243,7 +237,7 @@ test("create works with optional arguments", () => {
     name: "FILE_TITLE",
   };
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const create = mocked(global.Drive.Files).create.mockReturnValueOnce(file);
 
   const filesCollection = new SafeFilesCollection_();
@@ -266,7 +260,7 @@ test("create works with selective fields", () => {
     name: "FILE_TITLE",
   };
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const create = mocked(global.Drive.Files).create.mockReturnValueOnce(file);
 
   const filesCollection = new SafeFilesCollection_();
@@ -296,7 +290,7 @@ test("create throws an error on invalid file", () => {
     name: "FILE_TITLE",
   };
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const create = mocked(global.Drive.Files).create.mockReturnValueOnce(file);
 
   const filesCollection = new SafeFilesCollection_();
@@ -333,7 +327,7 @@ test("list works", () => {
     ],
   };
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const list = mocked(global.Drive.Files).list.mockReturnValueOnce(fileList);
 
   const filesCollection = new SafeFilesCollection_();
@@ -368,7 +362,7 @@ test("list works with optional arguments", () => {
     ],
   };
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const list = mocked(global.Drive.Files).list.mockReturnValueOnce(fileList);
 
   const filesCollection = new SafeFilesCollection_();
@@ -405,7 +399,7 @@ test("list works with selective fields", () => {
     ],
   };
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const list = mocked(global.Drive.Files).list.mockReturnValueOnce(fileList);
 
   const filesCollection = new SafeFilesCollection_();
@@ -444,7 +438,7 @@ test("list throws an error on invalid file", () => {
     ],
   };
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const list = mocked(global.Drive.Files).list.mockReturnValueOnce(fileList);
 
   const filesCollection = new SafeFilesCollection_();
@@ -458,7 +452,7 @@ test("list throws an error on invalid file", () => {
 test("list throws an error on invalid file list", () => {
   const fileList = {};
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const list = mocked(global.Drive.Files).list.mockReturnValueOnce(fileList);
 
   const filesCollection = new SafeFilesCollection_();
@@ -470,7 +464,7 @@ test("list throws an error on invalid file list", () => {
 });
 
 test("remove works", () => {
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const remove = mocked(global.Drive.Files).remove.mockImplementationOnce(
     // eslint-disable-next-line @typescript-eslint/no-empty-function -- Implementation needed so the function is bound to local this
     () => {},
@@ -495,7 +489,7 @@ test("update works", () => {
     name: "FILE_TITLE",
   };
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const update = mocked(global.Drive.Files).update.mockReturnValueOnce(file);
 
   const filesCollection = new SafeFilesCollection_();
@@ -520,7 +514,7 @@ test("update works with optional arguments", () => {
     name: "FILE_TITLE",
   };
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const update = mocked(global.Drive.Files).update.mockReturnValueOnce(file);
 
   const filesCollection = new SafeFilesCollection_();
@@ -549,7 +543,7 @@ test("update works with selective fields", () => {
     },
   };
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const update = mocked(global.Drive.Files).update.mockReturnValueOnce(file);
 
   const filesCollection = new SafeFilesCollection_();
@@ -574,7 +568,7 @@ test("update throws an error on invalid file", () => {
     id: "FILE_ID",
   };
 
-  global.Drive.Files = mockedFilesCollection();
+  global.Drive = mockedDrive();
   const update = mocked(global.Drive.Files).update.mockReturnValueOnce(file);
 
   const filesCollection = new SafeFilesCollection_();
diff --git a/__tests__/test-utils/gas-stubs.ts b/__tests__/test-utils/gas-stubs.ts
index 46bc30dc..ee18bd53 100644
--- a/__tests__/test-utils/gas-stubs.ts
+++ b/__tests__/test-utils/gas-stubs.ts
@@ -2,40 +2,6 @@ import { jest } from "@jest/globals";
 
 /* eslint-disable @typescript-eslint/naming-convention, @typescript-eslint/no-explicit-any -- These are stubs for external functions */
 
-export function mockedCommentsCollection(): GoogleAppsScript.Drive_v3.Drive.V3.Collection.CommentsCollection {
-  return {
-    create:
-      jest.fn<
-        (
-          resource: GoogleAppsScript.Drive_v3.Drive.V3.Schema.Comment,
-          fileId: string,
-        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.Comment
-      >(),
-    get: jest.fn<
-      (
-        fileId: string,
-        commentId: string,
-        optionalArgs?: Record<string, any>,
-      ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.Comment
-    >(),
-    list: jest.fn<
-      (
-        fileId: string,
-        optionalArgs?: Record<string, any>,
-      ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.CommentList
-    >(),
-    remove: jest.fn<(fileId: string, commentId: string) => void>(),
-    update:
-      jest.fn<
-        (
-          resource: GoogleAppsScript.Drive_v3.Drive.V3.Schema.Comment,
-          fileId: string,
-          commentId: string,
-        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.Comment
-      >(),
-  };
-}
-
 export function mockedDrive(): GoogleAppsScript.Drive {
   return {
     About: mockedAboutCollection(),
@@ -155,129 +121,6 @@ export function mockedDrive(): GoogleAppsScript.Drive {
   };
 }
 
-export function mockedDrivesCollection(): GoogleAppsScript.Drive_v3.Drive.V3.Collection.DrivesCollection {
-  return {
-    create:
-      jest.fn<
-        (
-          resource: GoogleAppsScript.Drive_v3.Drive.V3.Schema.Drive,
-          requestId: string,
-        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.Drive
-      >(),
-    get: jest.fn<
-      (
-        driveId: string,
-        optionalArgs?: Record<string, any>,
-      ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.Drive
-    >(),
-    hide: jest.fn<
-      (driveId: string) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.Drive
-    >(),
-    list: jest.fn<
-      (
-        optionalArgs?: Record<string, any>,
-      ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.DriveList
-    >(),
-    remove:
-      jest.fn<(driveId: string, optionalArgs?: Record<string, any>) => void>(),
-    unhide:
-      jest.fn<
-        (driveId: string) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.Drive
-      >(),
-    update:
-      jest.fn<
-        (
-          resource: GoogleAppsScript.Drive_v3.Drive.V3.Schema.Drive,
-          driveId: string,
-          optionalArgs?: Record<string, any>,
-        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.Drive
-      >(),
-  };
-}
-
-export function mockedFilesCollection(): GoogleAppsScript.Drive_v3.Drive.V3.Collection.FilesCollection {
-  return {
-    copy: jest.fn<
-      (
-        resource: GoogleAppsScript.Drive_v3.Drive.V3.Schema.File,
-        fileId: string,
-        optionalArgs?: Record<string, any>,
-      ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.File
-    >(),
-    create:
-      jest.fn<
-        (
-          resource: GoogleAppsScript.Drive_v3.Drive.V3.Schema.File,
-          mediaData?: GoogleAppsScript.Base.Blob,
-          optionalArgs?: Record<string, any>,
-        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.File
-      >(),
-    download:
-      jest.fn<
-        (
-          fileId: string,
-          optionalArgs?: Record<string, any>,
-        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.Operation
-      >(),
-    emptyTrash: jest.fn<(optionalArgs?: Record<string, any>) => void>(),
-    export: jest.fn<(fileId: string, mimeType: string) => void>(),
-    generateIds:
-      jest.fn<
-        (
-          optionalArgs?: Record<string, any>,
-        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.GeneratedIds
-      >(),
-    get: jest.fn() as {
-      (
-        fileId: string,
-        optionalArgs?: Record<string, any> & { alt: "media" },
-      ): string;
-      (
-        fileId: string,
-        optionalArgs?: Record<string, any>,
-      ): GoogleAppsScript.Drive_v3.Drive.V3.Schema.File;
-    },
-    list: jest.fn<
-      (
-        optionalArgs?: Record<string, any>,
-      ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.FileList
-    >(),
-    listLabels:
-      jest.fn<
-        (
-          fileId: string,
-          optionalArgs?: Record<string, any>,
-        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.LabelList
-      >(),
-    modifyLabels:
-      jest.fn<
-        (
-          resource: GoogleAppsScript.Drive_v3.Drive.V3.Schema.ModifyLabelsRequest,
-          fileId: string,
-        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.ModifyLabelsResponse
-      >(),
-    remove:
-      jest.fn<(fileId: string, optionalArgs?: Record<string, any>) => void>(),
-    update:
-      jest.fn<
-        (
-          resource: GoogleAppsScript.Drive_v3.Drive.V3.Schema.File,
-          fileId: string,
-          mediaData?: GoogleAppsScript.Base.Blob,
-          optionalArgs?: Record<string, any>,
-        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.File
-      >(),
-    watch:
-      jest.fn<
-        (
-          resource: GoogleAppsScript.Drive_v3.Drive.V3.Schema.Channel,
-          fileId: string,
-          optionalArgs?: Record<string, any>,
-        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.Channel
-      >(),
-  };
-}
-
 export function mockedHtmlOutput(): GoogleAppsScript.HTML.HtmlOutput {
   return {
     addMetaTag:
@@ -611,6 +454,163 @@ function mockedChannelsCollection(): GoogleAppsScript.Drive_v3.Drive.V3.Collecti
   };
 }
 
+function mockedCommentsCollection(): GoogleAppsScript.Drive_v3.Drive.V3.Collection.CommentsCollection {
+  return {
+    create:
+      jest.fn<
+        (
+          resource: GoogleAppsScript.Drive_v3.Drive.V3.Schema.Comment,
+          fileId: string,
+        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.Comment
+      >(),
+    get: jest.fn<
+      (
+        fileId: string,
+        commentId: string,
+        optionalArgs?: Record<string, any>,
+      ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.Comment
+    >(),
+    list: jest.fn<
+      (
+        fileId: string,
+        optionalArgs?: Record<string, any>,
+      ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.CommentList
+    >(),
+    remove: jest.fn<(fileId: string, commentId: string) => void>(),
+    update:
+      jest.fn<
+        (
+          resource: GoogleAppsScript.Drive_v3.Drive.V3.Schema.Comment,
+          fileId: string,
+          commentId: string,
+        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.Comment
+      >(),
+  };
+}
+
+function mockedDrivesCollection(): GoogleAppsScript.Drive_v3.Drive.V3.Collection.DrivesCollection {
+  return {
+    create:
+      jest.fn<
+        (
+          resource: GoogleAppsScript.Drive_v3.Drive.V3.Schema.Drive,
+          requestId: string,
+        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.Drive
+      >(),
+    get: jest.fn<
+      (
+        driveId: string,
+        optionalArgs?: Record<string, any>,
+      ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.Drive
+    >(),
+    hide: jest.fn<
+      (driveId: string) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.Drive
+    >(),
+    list: jest.fn<
+      (
+        optionalArgs?: Record<string, any>,
+      ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.DriveList
+    >(),
+    remove:
+      jest.fn<(driveId: string, optionalArgs?: Record<string, any>) => void>(),
+    unhide:
+      jest.fn<
+        (driveId: string) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.Drive
+      >(),
+    update:
+      jest.fn<
+        (
+          resource: GoogleAppsScript.Drive_v3.Drive.V3.Schema.Drive,
+          driveId: string,
+          optionalArgs?: Record<string, any>,
+        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.Drive
+      >(),
+  };
+}
+
+function mockedFilesCollection(): GoogleAppsScript.Drive_v3.Drive.V3.Collection.FilesCollection {
+  return {
+    copy: jest.fn<
+      (
+        resource: GoogleAppsScript.Drive_v3.Drive.V3.Schema.File,
+        fileId: string,
+        optionalArgs?: Record<string, any>,
+      ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.File
+    >(),
+    create:
+      jest.fn<
+        (
+          resource: GoogleAppsScript.Drive_v3.Drive.V3.Schema.File,
+          mediaData?: GoogleAppsScript.Base.Blob,
+          optionalArgs?: Record<string, any>,
+        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.File
+      >(),
+    download:
+      jest.fn<
+        (
+          fileId: string,
+          optionalArgs?: Record<string, any>,
+        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.Operation
+      >(),
+    emptyTrash: jest.fn<(optionalArgs?: Record<string, any>) => void>(),
+    export: jest.fn<(fileId: string, mimeType: string) => void>(),
+    generateIds:
+      jest.fn<
+        (
+          optionalArgs?: Record<string, any>,
+        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.GeneratedIds
+      >(),
+    get: jest.fn() as {
+      (
+        fileId: string,
+        optionalArgs?: Record<string, any> & { alt: "media" },
+      ): string;
+      (
+        fileId: string,
+        optionalArgs?: Record<string, any>,
+      ): GoogleAppsScript.Drive_v3.Drive.V3.Schema.File;
+    },
+    list: jest.fn<
+      (
+        optionalArgs?: Record<string, any>,
+      ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.FileList
+    >(),
+    listLabels:
+      jest.fn<
+        (
+          fileId: string,
+          optionalArgs?: Record<string, any>,
+        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.LabelList
+      >(),
+    modifyLabels:
+      jest.fn<
+        (
+          resource: GoogleAppsScript.Drive_v3.Drive.V3.Schema.ModifyLabelsRequest,
+          fileId: string,
+        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.ModifyLabelsResponse
+      >(),
+    remove:
+      jest.fn<(fileId: string, optionalArgs?: Record<string, any>) => void>(),
+    update:
+      jest.fn<
+        (
+          resource: GoogleAppsScript.Drive_v3.Drive.V3.Schema.File,
+          fileId: string,
+          mediaData?: GoogleAppsScript.Base.Blob,
+          optionalArgs?: Record<string, any>,
+        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.File
+      >(),
+    watch:
+      jest.fn<
+        (
+          resource: GoogleAppsScript.Drive_v3.Drive.V3.Schema.Channel,
+          fileId: string,
+          optionalArgs?: Record<string, any>,
+        ) => GoogleAppsScript.Drive_v3.Drive.V3.Schema.Channel
+      >(),
+  };
+}
+
 function mockedOperationCollection(): GoogleAppsScript.Drive_v3.Drive.V3.Collection.OperationCollection {
   return {
     cancel: jest.fn<(name: string) => void>(),