refactor(core): clear mocks after each test (#559)

packages/core/src/middleware/koa-error-handler.test.ts

@@ -16,11 +16,14 @@ describe('koaErrorHandler middleware', () => {
   const next = jest.fn().mockReturnValue(Promise.resolve());
 
   beforeEach(() => {
-    jest.clearAllMocks();
     ctx.body = mockBody;
     ctx.status = 200;
   });
 
+  afterEach(() => {
+    jest.clearAllMocks();
+  });
+
   it('expect to return error response if error type is RequestError', async () => {
     const error = new RequestError('auth.unauthorized');
     next.mockRejectedValueOnce(error);

packages/core/src/middleware/koa-spa-proxy.test.ts

@@ -19,6 +19,9 @@ describe('koaSpaProxy middleware', () => {
 
   beforeEach(() => {
     process.env = { ...envBackup };
+  });
+
+  afterEach(() => {
     jest.clearAllMocks();
     jest.resetModules();
   });

packages/core/src/middleware/koa-user-log.test.ts

@@ -26,7 +26,7 @@ describe('koaUserLog middleware', () => {
     payload: { applicationId: 'foo' },
   };
 
-  beforeEach(() => {
+  afterEach(() => {
     jest.clearAllMocks();
   });