use miniflare for better local testing env

Author: 6

package.json

@@ -18,6 +18,7 @@
     "eslint-plugin-no-async-without-await": "^1.2.0",
     "eslint-plugin-prettier": "^4.2.1",
     "jest": "^29.3.1",
+    "jest-environment-miniflare": "^2.11.0",
     "openai": "^3.1.0",
     "prettier": "^2.8.1",
     "ts-jest": "^29.0.3",

src/cache.test.ts

@@ -1,24 +1,22 @@
 import { getCacheKey } from './cache';
-import { objectHash } from './utils';
-
-jest.mock('./utils.ts');
+import * as utils from './utils';
 
 describe('cache', () => {
   describe('getCacheKey', () => {
     beforeEach(() => {
-      (objectHash as jest.Mock).mockReturnValue('unique-sha-hash');
+      jest.spyOn(utils, 'objectHash');
     });
 
     it('returns a hash uniquely representing the params', async () => {
       const params = {
         method: 'POST',
         path: '/v1/completions',
-        authHeader: 'api-key',
+        authHeader: 'api-key-!',
         body: '{ "ok": true }',
       };
       const result = await getCacheKey(params);
-      expect(objectHash).toHaveBeenCalledWith(params);
-      expect(result).toEqual('unique-sha-hash');
+      expect(utils.objectHash).toHaveBeenCalledWith(params);
+      expect(result).toEqual('1a97143b720b3d82cf93a34a5a02c61de1492b18d813f4f1859251eef1a738be');
     });
 
     it('removes null or empty values', async () => {
@@ -29,11 +27,11 @@ describe('cache', () => {
         body: '',
       };
       const result = await getCacheKey(params);
-      expect(objectHash).toHaveBeenCalledWith({
+      expect(utils.objectHash).toHaveBeenCalledWith({
         method: 'POST',
         path: '/v1/completions',
       });
-      expect(result).toEqual('unique-sha-hash');
+      expect(result).toEqual('771798e93f4fbad36b4c89cd88d3752383224caf8e585661dc174feb25939f75');
     });
   });
 });

src/utils.test.ts

@@ -0,0 +1,16 @@
+import { getHeadersAsObject } from './utils';
+
+describe('utils', () => {
+  describe('getHeadersAsObject', () => {
+    it('returns Headers instance in Object format', () => {
+      const sampleHeaders = new Headers({
+        'content-type': 'application/json',
+        Authorization: 'pedro martinez',
+      });
+      expect(getHeadersAsObject(sampleHeaders)).toEqual({
+        authorization: 'pedro martinez',
+        'content-type': 'application/json',
+      });
+    });
+  });
+});

test/jest.config.js

@@ -4,6 +4,6 @@ module.exports = {
     '\\.ts$': 'ts-jest',
   },
   clearMocks: true,
-  testEnvironment: 'node',
+  testEnvironment: 'miniflare',
   setupFilesAfterEnv: ['./test/jest.setup.ts'],
 };