fix: switch user_main invocation to use keyword arguments for better default parameter handling (#6756)

* fix: switch user_main invocation to use keyword arguments for better default parameter handling

* fix: test

---------

Co-authored-by: archer <545436317@qq.com>

.github/workflows/test-sandbox.yaml

@@ -27,8 +27,19 @@ jobs:
           node-version: '20'
           cache: 'pnpm'
 
+      - uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
       - name: Install Dependencies
         run: pnpm install
 
+      - name: Install Python Dependencies
+        run: pip install -r projects/code-sandbox/requirements.txt
+
       - name: Run Unit Tests
         run: pnpm --filter=code-sandbox test

projects/code-sandbox/src/pool/worker.py

@@ -613,15 +613,12 @@ def main_loop():
                 else:
                     result = user_main(variables)
             else:
-                call_args = []
+                # 用 kwargs 调用：缺席参数走函数默认值，不影响后面的参数
                 for p in params:
-                    if p in variables:
-                        call_args.append(variables[p])
-                    elif sig.parameters[p].default is not _inspect_mod.Parameter.empty:
-                        break
-                    else:
+                    if p not in variables and sig.parameters[p].default is _inspect_mod.Parameter.empty:
                         raise TypeError(f"Missing required argument: '{p}'")
-                result = user_main(*call_args)
+                call_kwargs = {p: variables[p] for p in params if p in variables}
+                result = user_main(**call_kwargs)
 
             signal.alarm(0)
             write_line({

projects/code-sandbox/test/compat/legacy-python.test.ts

@@ -99,6 +99,16 @@ def main(name, age):
     expect(result.data?.codeReturn.msg).toBe('Hello, World!');
   });
 
+  it('main 前置命名参数缺失但有默认值，后置参数仍按 kwargs 注入', async () => {
+    const result = await pool.execute({
+      code: `def main(a=None, b=None):
+    return {"a": a if a else "无", "b": b if b else "无"}`,
+      variables: { b: 'd2' }
+    });
+    expect(result.success).toBe(true);
+    expect(result.data?.codeReturn).toEqual({ a: '无', b: 'd2' });
+  });
+
   // ===== 返回值类型兼容 =====
 
   it('返回列表（旧版常见）', async () => {

projects/code-sandbox/test/unit/security.test.ts

@@ -25,8 +25,8 @@ beforeAll(async () => {
 });
 
 afterAll(async () => {
-  await jsPool.shutdown();
-  await pyPool.shutdown();
+  await jsPool?.shutdown();
+  await pyPool?.shutdown();
 });
 
 describe('模块拦截', () => {