diff --git a/src/components/molecules/Task.spec.tsx b/src/components/molecules/Task.spec.tsx
index 410ae809..a477c344 100644
--- a/src/components/molecules/Task.spec.tsx
+++ b/src/components/molecules/Task.spec.tsx
@@ -3,7 +3,6 @@ import React from 'react';
 import {
 	loadNowDate,
 	renderWithQueryProvider,
-	resolveWithDelay,
 	withMutedReactQueryLogger,
 } from '../../lib/test/helpers';
 import userEvent from '@testing-library/user-event';
@@ -14,6 +13,7 @@ import { editTask } from '../../lib/api/editTask';
 import { screen } from '@testing-library/react';
 import { vi, Mock, expect, it, describe, beforeEach } from 'vitest';
 import { queryTaskCheckbox } from '../../lib/test/queries';
+import loadControlledPromise from '../../lib/test/loadControlledPromise';
 
 vi.mock('../../lib/api/updateTask');
 vi.mock('date-fns');
@@ -260,7 +260,7 @@ describe('Task component', () => {
 	});
 
 	it('shows loading indicator on edit save', async () => {
-		resolveWithDelay(mockEditTask);
+		const { resolve } = loadControlledPromise(editTask);
 
 		renderTask();
 
@@ -271,6 +271,8 @@ describe('Task component', () => {
 		userEvent.click(screen.getByText('Save'));
 
 		await screen.findByRole('progressbar');
+
+		resolve();
 	});
 
 	it('closes edit dialog on save', async () => {
diff --git a/src/lib/getUnloadMessage.spec.tsx b/src/lib/getUnloadMessage.spec.tsx
index 2fc0677a..25fd477b 100644
--- a/src/lib/getUnloadMessage.spec.tsx
+++ b/src/lib/getUnloadMessage.spec.tsx
@@ -1,9 +1,10 @@
 import { getUnloadMessage } from './getUnloadMessage';
 import React from 'react';
 import { useUpdateTask } from './api/useUpdateTask';
-import { renderWithQueryProvider, resolveWithDelay } from './test/helpers';
+import { renderWithQueryProvider } from './test/helpers';
 import { vi, expect, it, describe } from 'vitest';
 import { updateTask } from './api';
+import loadControlledPromise from './test/loadControlledPromise';
 
 vi.mock('./api/updateTask');
 
@@ -15,12 +16,12 @@ describe('getUnloadMessage', () => {
 	});
 
 	it('returns message if pending task toggle', () => {
-		resolveWithDelay(vi.mocked(updateTask), 200);
+		const { reject } = loadControlledPromise(updateTask);
 
 		const Component = () => {
 			const updateTask = useUpdateTask();
 
-			updateTask(-1, { complete: true });
+			updateTask('-1', { complete: true });
 
 			return <div>Component</div>;
 		};
@@ -31,5 +32,7 @@ describe('getUnloadMessage', () => {
 			'There are changes that may be lost if you continue exiting.';
 
 		expect(getUnloadMessage(queryClient)).toEqual(expected);
+
+		reject();
 	});
 });
diff --git a/src/lib/test/helpers.tsx b/src/lib/test/helpers.tsx
index 3d0d528d..f38826d4 100644
--- a/src/lib/test/helpers.tsx
+++ b/src/lib/test/helpers.tsx
@@ -139,27 +139,6 @@ export function renderWithQueryProvider(
 	};
 }
 
-// DEPRECATED: Use `loadControlledPromise` instead.
-export function sleep<Type>({
-	ms = 50,
-	value = undefined,
-}: { ms?: number; value?: Type } = {}): Promise<Type | undefined> {
-	return new Promise((resolve) =>
-		setTimeout(() => {
-			resolve(value);
-		}, ms)
-	);
-}
-
-// DEPRECATED: Use `loadControlledPromise` instead.
-export function resolveWithDelay(
-	mock: SpyInstance,
-	ms = 50,
-	value: unknown = undefined
-): void {
-	mock.mockImplementation(() => sleep({ ms, value }));
-}
-
 export function makeTask({
 	complete = false,
 	due = '5/22/2020, 11:59 PM',