【CI】Add test cases for n parameter and streaming validation (#4503)

* add repitation early stop cases

* add repitation early stop cases

* add structure test openai

* add n parameters case

tests/ce/server/test_base_chat.py

@@ -9,6 +9,7 @@ some basic check for fd web api
 
 import json
 
+import requests
 from core import TEMPLATE, URL, build_request_payload, get_token_list, send_request
 
 
@@ -271,3 +272,149 @@ def test_bad_words_filtering1():
     assert word in token_list, f"'{word}' 应出现在生成结果中"
 
     print("test_bad_words_filtering1 正例验证通过")
+
+
+def test_n_parameters():
+    """
+    n参数测试 n=2
+    """
+    # 1. 构建请求
+    data = {
+        "stream": False,
+        "messages": [
+            {"role": "user", "content": "牛顿是谁？"},
+        ],
+        "max_tokens": 30,
+        "n": 2,
+    }
+    payload = build_request_payload(TEMPLATE, data)
+
+    # 2. 发送请求
+    resp = send_request(URL, payload).json()
+
+    # 3. 检查返回choices数量
+    choices = resp.get("choices", [])
+    assert len(choices) == 2, f"n参数为2，输出必须是2条数据，但实际返回 {len(choices)} 条"
+
+    # 4. 检查每条内容开头是否符合预期
+    expected_start = "牛顿是英国著名的物理学家"
+    for i, choice in enumerate(choices):
+        content = choice["message"]["content"]
+        print(f"Choice {i} 内容:", content)
+        assert content.startswith(expected_start), f"第{i}条输出内容开头不匹配"
+
+    print("test_n_parameters 验证通过")
+
+
+def test_n_parameters1():
+    """
+    n参数测试 n=3
+    """
+    # 1. 构建请求
+    data = {
+        "stream": False,
+        "messages": [
+            {"role": "user", "content": "牛顿是谁？"},
+        ],
+        "max_tokens": 30,
+        "n": 3,
+    }
+    payload = build_request_payload(TEMPLATE, data)
+
+    # 2. 发送请求
+    resp = send_request(URL, payload).json()
+
+    # 3. 检查返回choices数量
+    choices = resp.get("choices", [])
+    assert len(choices) == 3, f"n参数为3，输出必须是3条数据，但实际返回 {len(choices)} 条"
+
+    # 4. 检查每条内容开头是否符合预期
+    expected_start = "牛顿是英国著名的物理学家"
+    for i, choice in enumerate(choices):
+        content = choice["message"]["content"]
+        print(f"Choice {i} 内容:", content)
+        assert content.startswith(expected_start), f"第{i}条输出内容开头不匹配"
+
+    print("test_n_parameters 验证通过")
+
+
+def test_n_parameters2():
+    """
+    n参数测试 n=6
+    """
+    # 1. 构建请求
+    data = {
+        "stream": False,
+        "messages": [
+            {"role": "user", "content": "牛顿是谁？"},
+        ],
+        "max_tokens": 30,
+        "n": 6,
+    }
+    payload = build_request_payload(TEMPLATE, data)
+
+    # 2. 发送请求
+    resp = send_request(URL, payload).json()
+
+    # 3. 检查返回choices数量
+    choices = resp.get("choices", [])
+    assert len(choices) == 6, f"n参数为6，输出必须是6条数据，但实际返回 {len(choices)} 条"
+
+    # 4. 检查每条内容开头是否符合预期
+    expected_start = "牛顿是英国著名的物理学家"
+    for i, choice in enumerate(choices):
+        content = choice["message"]["content"]
+        print(f"Choice {i} 内容:", content)
+        assert content.startswith(expected_start), f"第{i}条输出内容开头不匹配"
+
+    print("test_n_parameters 验证通过")
+
+
+def test_n_parameters_stream():
+    """
+    n参数测试（流式输出 n=3）
+    """
+    data = {
+        "stream": True,
+        "messages": [
+            {"role": "user", "content": "牛顿是谁？"},
+        ],
+        "max_tokens": 30,
+        "n": 3,
+    }
+    payload = build_request_payload(TEMPLATE, data)
+
+    with requests.post(URL, json=payload, stream=True) as resp:
+        assert resp.status_code == 200, f"请求失败，状态码 {resp.status_code}"
+
+        # 初始化3个缓存
+        partial_contents = ["", "", ""]
+
+        for line in resp.iter_lines(decode_unicode=True):
+            if not line or not line.startswith("data: "):
+                continue
+            data_str = line[len("data: ") :]
+            if data_str.strip() == "[DONE]":
+                break
+
+            try:
+                data_json = json.loads(data_str)
+            except Exception as e:
+                print("解析异常：", e, line)
+                continue
+
+            choices = data_json.get("choices", [])
+            for choice in choices:
+                idx = choice.get("index", 0)
+                delta = choice.get("delta", {}).get("content", "")
+                if idx < len(partial_contents):
+                    partial_contents[idx] += delta
+
+        # 检查流式聚合结果
+        assert len(partial_contents) == 3, "应产生3个流式输出"
+        expected_start = "牛顿是英国著名的物理学家"
+        for i, content in enumerate(partial_contents):
+            print(f"Choice {i} 最终内容:", content)
+            assert content.startswith(expected_start), f"第{i}条输出开头不匹配"
+
+    print("✅ test_n_parameters_stream 验证通过")