From e13d3554e044deea6aaff33ddd8a003ef550c398 Mon Sep 17 00:00:00 2001
From: Philipp Hofmann <philipp.hofmann@commercetools.com>
Date: Wed, 6 Nov 2024 08:40:12 +0100
Subject: [PATCH] fix: introduced tests for service

---
 .../service/tests/integration/cart.spec.ts    | 138 ++++++++++++++++++
 .../service/tests/integration/routes.spec.ts  |   4 +-
 .../typescript/service/tests/setup-tests.ts   |   3 +
 3 files changed, 143 insertions(+), 2 deletions(-)
 create mode 100644 application-templates/typescript/service/tests/integration/cart.spec.ts
 create mode 100644 application-templates/typescript/service/tests/setup-tests.ts

diff --git a/application-templates/typescript/service/tests/integration/cart.spec.ts b/application-templates/typescript/service/tests/integration/cart.spec.ts
new file mode 100644
index 0000000..fb6664c
--- /dev/null
+++ b/application-templates/typescript/service/tests/integration/cart.spec.ts
@@ -0,0 +1,138 @@
+import { describe, expect } from '@jest/globals';
+import { cartController } from '../../src/controllers/cart.controller';
+import { Cart, LineItem } from '@commercetools/platform-sdk';
+import { createApiRoot } from '../../src/client/create.client';
+
+jest.mock('../../src/client/create.client', () => {
+  const mockCreateApiRoot = jest.fn();
+  return {
+    createApiRoot: mockCreateApiRoot,
+  };
+});
+
+const cartId = '643cf548-e12e-4f17-bc7d-c826ecbc35b2';
+const productId = 'fc75c80a-35bb-4414-92b1-d7899534b6f2';
+
+const lineItem: LineItem = {
+  id: '5f409894-85eb-498e-b44e-4f8155d3619a',
+  productId: 'fc75c80a-35bb-4414-92b1-d7899534b6f2',
+  productKey: 'ben-pillow-cover',
+  name: {
+    'en-US': 'Ben Pillow Cover',
+  },
+  productType: {
+    typeId: 'product-type',
+    id: 'fc4487a6-65cb-4433-916a-f669e094e4d8',
+  },
+  productSlug: {
+    'en-US': 'ben-pillow-cover',
+  },
+  variant: {
+    id: 1,
+    sku: 'LBPC-09',
+    key: 'LBPC-09',
+  },
+  price: {
+    id: 'a1ba8634-68cc-4e68-b318-2284f111bb3d',
+    value: {
+      type: 'centPrecision',
+      currencyCode: 'EUR',
+      centAmount: 1039,
+      fractionDigits: 2,
+    },
+    key: 'ben-pillow-cover-LBPC-09-FR-EUR',
+    country: 'FR',
+  },
+  quantity: 1,
+  discountedPricePerQuantity: [],
+  perMethodTaxRate: [],
+  addedAt: '2023-12-18T18:07:29.685Z',
+  lastModifiedAt: '2023-12-18T18:07:29.685Z',
+  state: [],
+  priceMode: 'Platform',
+  lineItemMode: 'Standard',
+  totalPrice: {
+    type: 'centPrecision',
+    currencyCode: 'EUR',
+    centAmount: 1039,
+    fractionDigits: 2,
+  },
+  taxedPricePortions: [],
+};
+
+const cart: Cart = {
+  id: cartId,
+  version: 1,
+  createdAt: '',
+  lastModifiedAt: '',
+  anonymousId: 'e9e59e5b-6e88-414d-9797-d1a08411db12',
+  locale: 'de-DE',
+  lineItems: [lineItem],
+  cartState: 'Active',
+  totalPrice: {
+    type: 'centPrecision',
+    currencyCode: 'EUR',
+    centAmount: 0,
+    fractionDigits: 2,
+  },
+  country: 'DE',
+  shippingMode: 'Single',
+  shipping: [],
+  customLineItems: [],
+  discountCodes: [],
+  directDiscounts: [],
+  inventoryMode: 'ReserveOnOrder',
+  taxMode: 'Platform',
+  taxRoundingMode: 'HalfEven',
+  taxCalculationMode: 'LineItemLevel',
+  refusedGifts: [],
+  origin: 'Customer',
+  itemShippingAddresses: [],
+};
+
+describe('Testing Event Controller', () => {
+  it('Cart Created (Mocked)', async () => {
+    // Define a mock root to be returned
+    const withId = jest.fn().mockReturnValueOnce({
+      get: jest.fn().mockReturnValueOnce({
+        execute: jest.fn().mockReturnValueOnce(lineItem),
+      }),
+    });
+    const mockRoot = {
+      products: jest.fn().mockReturnValueOnce({
+        withId: withId,
+      }),
+    };
+
+    // Set the mock implementation for createApiRoot to return mockRoot
+    (createApiRoot as jest.Mock).mockReturnValueOnce(mockRoot);
+
+    const response = await cartController('Create', {
+      ...cart,
+      lineItems: [lineItem],
+    });
+
+    expect(response?.statusCode).toBe(200);
+    expect(withId).toHaveBeenCalledWith({ ID: productId });
+  });
+  /*
+   * This Test really calls the commercetools APIs. To do so,
+   * - remove the mocking code in line 7-12
+   * - configure a "real" cartId
+   * - remove the skip below
+   *
+   * The code below comes in handy to test during development.
+   */
+  it.skip('Cart Created', async () => {
+    const response = await cartController('Create', cart);
+    expect(response?.statusCode).toBe(200);
+    expect(response?.actions).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({
+          action: 'recalculate',
+          updateProductData: false,
+        }),
+      ])
+    );
+  });
+});
diff --git a/application-templates/typescript/service/tests/integration/routes.spec.ts b/application-templates/typescript/service/tests/integration/routes.spec.ts
index 6faef88..83259c7 100644
--- a/application-templates/typescript/service/tests/integration/routes.spec.ts
+++ b/application-templates/typescript/service/tests/integration/routes.spec.ts
@@ -22,14 +22,14 @@ describe('Testing router', () => {
     });
     expect(response.status).toBe(400);
     expect(response.body).toEqual({
-      message: 'Bad request - Missing body parameters.',
+      message: 'Bad request - Missing action parameter.',
     });
   });
   test('Post empty body', async () => {
     const response = await request(app).post('/service');
     expect(response.status).toBe(400);
     expect(response.body).toEqual({
-      message: 'Bad request - Missing body parameters.',
+      message: 'Bad request - Missing action parameter.',
     });
   });
 });
diff --git a/application-templates/typescript/service/tests/setup-tests.ts b/application-templates/typescript/service/tests/setup-tests.ts
new file mode 100644
index 0000000..b7998b4
--- /dev/null
+++ b/application-templates/typescript/service/tests/setup-tests.ts
@@ -0,0 +1,3 @@
+import { config } from 'dotenv';
+config();
+config({ path: `.env.local`, override: true });