diff --git a/__tests__/__snapshots__/index.test.js.snap b/__tests__/__snapshots__/index.test.js.snap
index 903e6c5..54ac0ad 100644
--- a/__tests__/__snapshots__/index.test.js.snap
+++ b/__tests__/__snapshots__/index.test.js.snap
@@ -1,4 +1,4 @@
-// Jest Snapshot v1, https://goo.gl/fbAQLP
+// Jest Snapshot v1, https://jestjs.io/docs/snapshot-testing
 
 exports[`DynamoDB module functions get 1`] = `
 {
diff --git a/__tests__/__snapshots__/resolvers.test.js.snap b/__tests__/__snapshots__/resolvers.test.js.snap
index d7d35b3..4982c6f 100644
--- a/__tests__/__snapshots__/resolvers.test.js.snap
+++ b/__tests__/__snapshots__/resolvers.test.js.snap
@@ -1,4 +1,4 @@
-// Jest Snapshot v1, https://goo.gl/fbAQLP
+// Jest Snapshot v1, https://jestjs.io/docs/snapshot-testing
 
 exports[`dynamodb resolvers something 1`] = `
 {
diff --git a/__tests__/helpers.js b/__tests__/helpers.js
index d336964..092558a 100644
--- a/__tests__/helpers.js
+++ b/__tests__/helpers.js
@@ -1,10 +1,16 @@
 "use strict";
 
+import { fileURLToPath, pathToFileURL } from "url";
+import { dirname, resolve } from "path";
 import { AppSyncClient, EvaluateCodeCommand } from "@aws-sdk/client-appsync";
 import { util } from "..";
 import * as ddb from "../dynamodb";
 import * as rds from "../rds";
 
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+const projectRoot = resolve(__dirname, "..");
+
 let client = null;
 
 const runResolverFunctionOnAWS = async (code, context, functionName) => {
@@ -65,8 +71,8 @@ export const checkResolverValid = async (code, context, functionName) => {
     result = await runResolverFunctionOnAWS(fullCode, context, functionName);
   } else {
     const fullCode = `
-        import { util } from '..';
-        import * as rds from '../rds';
+        import { util } from '${pathToFileURL(resolve(projectRoot, "index.js"))}';
+        import * as rds from '${pathToFileURL(resolve(projectRoot, "rds/index.js"))}';
         ` + code;
     const encodedJs = encodeURIComponent(fullCode);
     const dataUri = 'data:text/javascript;charset=utf-8,' + encodedJs;
diff --git a/__tests__/index.test.js b/__tests__/index.test.js
index 7f210d4..b160e01 100644
--- a/__tests__/index.test.js
+++ b/__tests__/index.test.js
@@ -17,22 +17,21 @@ describe("general utilities", () => {
 });
 
 describe("time utilities", () => {
+  afterEach(() => {
+    jest.useRealTimers();
+  });
+
   test("nowFormatted", async () => {
-    // patch date utilities to ensure consistency
-    const newDate = new Date(2021, 1, 1);
-    const spied = jest.spyOn(global, 'Date').mockImplementation(() => newDate);
+    jest.useFakeTimers();
+    jest.setSystemTime(new Date(Date.UTC(2021, 1, 1)));
 
-    // TODO: not strictly correct, but close
     expect(util.time.nowFormatted('YYYY-MM-dd HH:mm:ss')).toEqual("2021-02-01T00:00:00.000Z");
-    spied.mockRestore();
   });
   test("nowISO8601", async () => {
-    // patch date utilities to ensure consistency
-    const newDate = new Date(Date.UTC(2021, 1, 1));
-    const spied = jest.spyOn(global, 'Date').mockImplementation(() => newDate);
+    jest.useFakeTimers();
+    jest.setSystemTime(new Date(Date.UTC(2021, 1, 1)));
 
     expect(util.time.nowISO8601()).toEqual("2021-02-01T00:00:00.000Z");
-    spied.mockRestore();
   });
 });