tests(metrics): fix handlers type

Author: saragerion

Diff for: packages/metrics/jest.config.js

@@ -1,4 +1,5 @@
 module.exports = {
+  'runner': 'groups',
   'preset': 'ts-jest',
   'transform': {
     '^.+\\.ts?$': 'ts-jest',

Diff for: packages/metrics/tests/unit/Metrics.test.ts

@@ -16,6 +16,19 @@ interface LooseObject {
   [key: string]: string
 }
 
+type DummyEvent = {
+  key1: string
+  key2: string
+  key3: string
+};
+
+/**
+ * Metrics tests
+ *
+ * @group metrics
+ * @group unit/Metrics
+ */
+
 describe('Class: Metrics', () => {
   const originalEnvironmentVariables = process.env;
 
@@ -229,7 +242,7 @@ describe('Class: Metrics', () => {
     test('Cold start metric should only be written out once and flushed automatically', async () => {
       const metrics = new Metrics({ namespace: 'test' });
 
-      const handler = async (_event: unknown, _context: unknown): Promise<void> => {
+      const handler = async (_event: DummyEvent, _context: Context): Promise<void> => {
         // Should generate only one log
         metrics.captureColdStartMetric();
       };
@@ -363,7 +376,7 @@ describe('Class: Metrics', () => {
       expect.assertions(1);
 
       const metrics = new Metrics({ namespace: 'test' });
-      const handler = async (_event: unknown, _context: unknown): Promise<void> => {
+      const handler = async (_event: DummyEvent, _context: Context): Promise<void> => {
         metrics.raiseOnEmptyMetrics();
         // Logic goes here
         metrics.purgeStoredMetrics();

Diff for: packages/metrics/tests/unit/middleware/middy.test.ts

@@ -1,12 +1,21 @@
 import { logMetrics } from '../../../../metrics/src/middleware';
 import { Metrics, MetricUnits } from '../../../../metrics/src';
 import middy from '@middy/core';
+// eslint-disable-next-line @typescript-eslint/ban-ts-comment
+// @ts-ignore
+import * as event from '../../../../../tests/resources/events/custom/hello-world.json';
 import { ExtraOptions } from '../../../src/types';
 
 const consoleSpy = jest.spyOn(console, 'log').mockImplementation();
 const mockDate = new Date(1466424490000);
 const dateSpy = jest.spyOn(global, 'Date').mockImplementation(() => mockDate as unknown as string);
 
+/**
+ * Metrics tests
+ *
+ * @group metrics
+ * @group unit/middleware
+ */
 describe('Middy middleware', () => {
 
   beforeEach(() => {
@@ -17,7 +26,6 @@ describe('Middy middleware', () => {
 
   describe('logMetrics', () => {
 
-    const event = { foo: 'bar' };
     const getRandomInt = (): number => Math.floor(Math.random() * 1000000000);
     const awsRequestId = getRandomInt().toString();