fix: messages adapt test (#6813)

* doc

* doc

* doc

Author: c121914yu

document/content/docs/self-host/upgrading/4-14/41414.mdx

@@ -8,6 +8,7 @@ description: 'FastGPT V4.14.14 更新说明'
 ### 1. 更新镜像 tag
 
 - 更新 fastgpt-app(fastgpt 主服务) 镜像 tag: v4.14.14
+- 更新 fastgpt-pro(fastgpt 商业版) 镜像 tag: v4.14.14
 
 ## 🐛 修复
 
@@ -16,4 +17,5 @@ description: 'FastGPT V4.14.14 更新说明'
 
 1. 个人微信发布渠道，优化轮询策略（拉取与回复解耦），避免数据量超大时出现阻塞。
 2. 新增环境变量 `WECHAT_CHANNEL_CONCURRENCY`（默认 1000）用于控制微信渠道 poll worker 并发数，建议 ≥ online channel 峰值。
-3. 完善内网地址检测。
+3. 完善内网地址检测。
+4. 兼容 deepseek 工具调用+思考模式，避免接口出现 400 错误。

document/data/doc-last-modified.json

@@ -230,7 +230,7 @@
   "document/content/docs/self-host/upgrading/4-14/41412.mdx": "2026-04-21T23:04:26+08:00",
   "document/content/docs/self-host/upgrading/4-14/41413.en.mdx": "2026-04-21T23:04:26+08:00",
   "document/content/docs/self-host/upgrading/4-14/41413.mdx": "2026-04-21T23:04:26+08:00",
-  "document/content/docs/self-host/upgrading/4-14/41414.mdx": "2026-04-22T16:29:40+08:00",
+  "document/content/docs/self-host/upgrading/4-14/41414.mdx": "2026-04-22T23:35:11+08:00",
   "document/content/docs/self-host/upgrading/4-14/4142.en.mdx": "2026-03-03T17:39:47+08:00",
   "document/content/docs/self-host/upgrading/4-14/4142.mdx": "2026-03-03T17:39:47+08:00",
   "document/content/docs/self-host/upgrading/4-14/4143.en.mdx": "2026-03-03T17:39:47+08:00",

packages/global/core/chat/adapt.ts

@@ -171,7 +171,7 @@ export const chats2GPTMessages = ({
             typeof lastResult?.content === 'string'
           ) {
             lastResult.content += value.text.content;
-          } else if (lastResult.reasoning_content) {
+          } else if (lastResult?.reasoning_content) {
             lastResult.content = value.text.content;
           } else {
             aiResults.push({

test/cases/global/core/chat/adapt.test.ts

@@ -444,6 +444,124 @@ describe('chats2GPTMessages', () => {
     // Plan should be skipped when reserveTool is false
     expect(result).toHaveLength(2);
   });
+
+  it('should convert AI message with reasoning only', () => {
+    const messages: ChatItemMiniType[] = [
+      {
+        obj: ChatRoleEnum.AI,
+        value: [{ reasoning: { content: 'Let me think...' } }]
+      }
+    ];
+
+    const result = chats2GPTMessages({ messages, reserveId: false });
+
+    expect(result).toHaveLength(1);
+    expect(result[0].role).toBe(ChatCompletionRequestMessageRoleEnum.Assistant);
+    expect((result[0] as any).reasoning_content).toBe('Let me think...');
+    expect((result[0] as any).content).toBeUndefined();
+  });
+
+  it('should merge reasoning + text into a single assistant message', () => {
+    const messages: ChatItemMiniType[] = [
+      {
+        obj: ChatRoleEnum.AI,
+        value: [
+          { reasoning: { content: 'Let me think...' } },
+          { text: { content: 'Final answer' } }
+        ]
+      }
+    ];
+
+    const result = chats2GPTMessages({ messages, reserveId: false });
+
+    expect(result).toHaveLength(1);
+    expect(result[0].role).toBe(ChatCompletionRequestMessageRoleEnum.Assistant);
+    expect((result[0] as any).reasoning_content).toBe('Let me think...');
+    expect((result[0] as any).content).toBe('Final answer');
+  });
+
+  it('should merge reasoning + tool_calls into a single assistant message', () => {
+    const messages: ChatItemMiniType[] = [
+      {
+        obj: ChatRoleEnum.AI,
+        value: [
+          { reasoning: { content: 'Need to call a tool' } },
+          {
+            tool: {
+              id: 'tool-1',
+              toolName: 'Search',
+              toolAvatar: '',
+              functionName: 'search_web',
+              params: '{"q":"x"}',
+              response: '{}'
+            }
+          }
+        ]
+      }
+    ];
+
+    const result = chats2GPTMessages({ messages, reserveId: false, reserveTool: true });
+
+    // 1 merged assistant (reasoning + tool_calls) + 1 tool response
+    expect(result).toHaveLength(2);
+    expect(result[0].role).toBe(ChatCompletionRequestMessageRoleEnum.Assistant);
+    expect((result[0] as any).reasoning_content).toBe('Need to call a tool');
+    expect((result[0] as any).tool_calls).toHaveLength(1);
+    expect((result[0] as any).tool_calls[0].function.name).toBe('search_web');
+    expect(result[1].role).toBe(ChatCompletionRequestMessageRoleEnum.Tool);
+  });
+
+  it('should keep tool_calls separate when no reasoning precedes them', () => {
+    const messages: ChatItemMiniType[] = [
+      {
+        obj: ChatRoleEnum.AI,
+        value: [
+          { text: { content: 'Calling tool' } },
+          {
+            tool: {
+              id: 'tool-1',
+              toolName: 'Search',
+              toolAvatar: '',
+              functionName: 'search_web',
+              params: '{}',
+              response: '{}'
+            }
+          }
+        ]
+      }
+    ];
+
+    const result = chats2GPTMessages({ messages, reserveId: false, reserveTool: true });
+
+    // text assistant + tool_calls assistant + tool response
+    expect(result).toHaveLength(3);
+    expect((result[0] as any).content).toBe('Calling tool');
+    expect((result[0] as any).tool_calls).toBeUndefined();
+    expect((result[1] as any).tool_calls).toHaveLength(1);
+    expect(result[2].role).toBe(ChatCompletionRequestMessageRoleEnum.Tool);
+  });
+
+  it('should handle multiple reasoning values producing separate assistant entries', () => {
+    const messages: ChatItemMiniType[] = [
+      {
+        obj: ChatRoleEnum.AI,
+        value: [
+          { reasoning: { content: 'Step 1 thinking' } },
+          { text: { content: 'Intermediate answer' } },
+          { reasoning: { content: 'Step 2 thinking' } },
+          { text: { content: 'Final answer' } }
+        ]
+      }
+    ];
+
+    const result = chats2GPTMessages({ messages, reserveId: false });
+
+    expect(result).toHaveLength(2);
+    expect((result[0] as any).reasoning_content).toBe('Step 1 thinking');
+    expect((result[0] as any).content).toBe('Intermediate answer');
+    expect((result[1] as any).reasoning_content).toBe('Step 2 thinking');
+    expect((result[1] as any).content).toBe('Final answer');
+  });
 });
 
 describe('GPTMessages2Chats', () => {
@@ -530,6 +648,40 @@ describe('GPTMessages2Chats', () => {
     expect(result[0].value[1].text?.content).toBe('Final answer');
   });
 
+  it('should drop reasoning when reserveReason is false', () => {
+    const messages: ChatCompletionMessageParam[] = [
+      {
+        role: ChatCompletionRequestMessageRoleEnum.Assistant,
+        content: 'Final answer',
+        reasoning_content: 'Let me think about this...'
+      }
+    ];
+
+    const result = GPTMessages2Chats({ messages, reserveReason: false });
+
+    expect(result).toHaveLength(1);
+    expect(result[0].value).toHaveLength(1);
+    expect(result[0].value[0].text?.content).toBe('Final answer');
+    expect((result[0].value[0] as any).reasoning).toBeUndefined();
+  });
+
+  it('should keep only reasoning when assistant message has no content', () => {
+    const messages: ChatCompletionMessageParam[] = [
+      {
+        role: ChatCompletionRequestMessageRoleEnum.Assistant,
+        content: '',
+        reasoning_content: 'Thinking only'
+      }
+    ];
+
+    const result = GPTMessages2Chats({ messages });
+
+    expect(result).toHaveLength(1);
+    expect(result[0].value).toHaveLength(1);
+    const value = result[0].value[0] as { reasoning?: { content: string } };
+    expect(value.reasoning?.content).toBe('Thinking only');
+  });
+
   it('should merge messages with same dataId', () => {
     const messages: ChatCompletionMessageParam[] = [
       {