feat(tests): add comprehensive tests for Processing and EmbeddingProcess components (#29873)

Co-authored-by: CodingOnStar <hanxujiang@dify.ai>
Co-authored-by: yyh <92089059+lyzno1@users.noreply.github.com>

web/__mocks__/ky.ts

@@ -0,0 +1,71 @@
+/**
+ * Mock for ky HTTP client
+ * This mock is used to avoid ESM issues in Jest tests
+ */
+
+type KyResponse = {
+  ok: boolean
+  status: number
+  statusText: string
+  headers: Headers
+  json: jest.Mock
+  text: jest.Mock
+  blob: jest.Mock
+  arrayBuffer: jest.Mock
+  clone: jest.Mock
+}
+
+type KyInstance = jest.Mock & {
+  get: jest.Mock
+  post: jest.Mock
+  put: jest.Mock
+  patch: jest.Mock
+  delete: jest.Mock
+  head: jest.Mock
+  create: jest.Mock
+  extend: jest.Mock
+  stop: symbol
+}
+
+const createResponse = (data: unknown = {}, status = 200): KyResponse => {
+  const response: KyResponse = {
+    ok: status >= 200 && status < 300,
+    status,
+    statusText: status === 200 ? 'OK' : 'Error',
+    headers: new Headers(),
+    json: jest.fn().mockResolvedValue(data),
+    text: jest.fn().mockResolvedValue(JSON.stringify(data)),
+    blob: jest.fn().mockResolvedValue(new Blob()),
+    arrayBuffer: jest.fn().mockResolvedValue(new ArrayBuffer(0)),
+    clone: jest.fn(),
+  }
+  // Ensure clone returns a new response-like object, not the same instance
+  response.clone.mockImplementation(() => createResponse(data, status))
+  return response
+}
+
+const createKyInstance = (): KyInstance => {
+  const instance = jest.fn().mockImplementation(() => Promise.resolve(createResponse())) as KyInstance
+
+  // HTTP methods
+  instance.get = jest.fn().mockImplementation(() => Promise.resolve(createResponse()))
+  instance.post = jest.fn().mockImplementation(() => Promise.resolve(createResponse()))
+  instance.put = jest.fn().mockImplementation(() => Promise.resolve(createResponse()))
+  instance.patch = jest.fn().mockImplementation(() => Promise.resolve(createResponse()))
+  instance.delete = jest.fn().mockImplementation(() => Promise.resolve(createResponse()))
+  instance.head = jest.fn().mockImplementation(() => Promise.resolve(createResponse()))
+
+  // Create new instance with custom options
+  instance.create = jest.fn().mockImplementation(() => createKyInstance())
+  instance.extend = jest.fn().mockImplementation(() => createKyInstance())
+
+  // Stop method for AbortController
+  instance.stop = Symbol('stop')
+
+  return instance
+}
+
+const ky = createKyInstance()
+
+export default ky
+export { ky }