Feature/add test to nodejs sdk (#31)

sdks/nodejs-client/babel.config.json

+{
+    "presets": [
+        "@babel/preset-env"
+    ]
+}
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sdks/nodejs-client/index.js

 import axios from 'axios'
 
-const BASE_URL = 'https://api.dify.ai/v1'
+export const BASE_URL = 'https://api.dify.ai/v1'
 
-const routes = {
+export const routes = {
   application: {
     method: 'GET',
     url: () => `/parameters`

sdks/nodejs-client/index.test.js

+import { DifyClient, BASE_URL, routes } from ".";
+
+import axios from 'axios'
+
+jest.mock('axios')
+
+describe('Client', () => {
+  let difyClient
+  beforeEach(() => {
+    difyClient = new DifyClient('test')
+  })
+
+  test('should create a client', () => {
+    expect(difyClient).toBeDefined();
+  })
+  // test updateApiKey
+  test('should update the api key', () => {
+    difyClient.updateApiKey('test2');
+    expect(difyClient.apiKey).toBe('test2');
+  })
+});
+
+describe('Send Requests', () => {
+  let difyClient
+
+  beforeEach(() => {
+    difyClient = new DifyClient('test')
+  })
+
+  afterEach(() => {
+    jest.resetAllMocks()
+  })
+
+  it('should make a successful request to the application parameter', async () => {
+    const method = 'GET'
+    const endpoint = routes.application.url
+    const expectedResponse = { data: 'response' }
+    axios.mockResolvedValue(expectedResponse)
+
+    await difyClient.sendRequest(method, endpoint)
+
+    expect(axios).toHaveBeenCalledWith({
+      method,
+      url: `${BASE_URL}${endpoint}`,
+      data: null,
+      params: null,
+      headers: {
+        Authorization: `Bearer ${difyClient.apiKey}`,
+        'Content-Type': 'application/json',
+      },
+      responseType: 'json',
+    })
+
+  })
+
+  it('should handle errors from the API', async () => {
+    const method = 'GET'
+    const endpoint = '/test-endpoint'
+    const errorMessage = 'Request failed with status code 404'
+    axios.mockRejectedValue(new Error(errorMessage))
+
+    await expect(difyClient.sendRequest(method, endpoint)).rejects.toThrow(
+      errorMessage
+    )
+  })
+})
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sdks/nodejs-client/package.json

@@ -14,7 +14,21 @@
     "<crazywoola> <<427733928@qq.com>> (https://github.com/crazywoola)"
   ],
   "license": "MIT",
+  "scripts": {
+    "test": "jest"
+  },
+  "jest": {
+    "transform": {
+      "^.+\\.[t|j]sx?$": "babel-jest"
+    }
+  },
   "dependencies": {
     "axios": "^1.3.5"
+  },
+  "devDependencies": {
+    "@babel/core": "^7.21.8",
+    "@babel/preset-env": "^7.21.5",
+    "babel-jest": "^29.5.0",
+    "jest": "^29.5.0"
   }
 }
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