feat: manually mirror opencoze's code from bytedance

Change-Id: I09a73aadda978ad9511264a756b2ce51f5761adf

frontend/packages/studio/autosave/__tests__/utils/index.test.ts

@@ -0,0 +1,70 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+import {
+  isFunction,
+  isObject,
+  getPayloadByFormatter,
+} from '../../src/utils/index';
+import { type DebounceConfig, DebounceTime } from '../../src/type/index';
+
+describe('isFunction', () => {
+  const fn: DebounceConfig = () => DebounceTime.Immediate;
+
+  const ob: DebounceConfig = {
+    default: DebounceTime.Immediate,
+  };
+
+  it('isFunction should return true when the input is function', () => {
+    const result = isFunction(fn);
+
+    expect(result).toBe(true);
+  });
+
+  it('isFunction should return false when the input is object', () => {
+    const result = isFunction(ob);
+
+    expect(result).toBe(false);
+  });
+
+  it('isObject should return true when the input is object', () => {
+    const result = isObject(ob);
+
+    expect(result).toBe(true);
+  });
+});
+
+describe('getPayloadByFormatter', () => {
+  it('should return state directly if formatter is not provided', async () => {
+    const state = { key: 'value' };
+
+    const result = await getPayloadByFormatter(state);
+
+    expect(result).toEqual(state);
+  });
+
+  it('should call formatter and return its result if formatter is provided', async () => {
+    const state = { key: 'value' };
+    const formatter = vi
+      .fn()
+      .mockResolvedValue({ formattedKey: 'formattedValue' });
+
+    const result = await getPayloadByFormatter(state, formatter);
+
+    expect(formatter).toHaveBeenCalledWith(state);
+    expect(result).toEqual({ formattedKey: 'formattedValue' });
+  });
+});