diff --git a/tests/actions/test_action_node.py b/tests/actions/test_action_node.py
new file mode 100644
index 00000000..488e85ba
--- /dev/null
+++ b/tests/actions/test_action_node.py
@@ -0,0 +1,86 @@
+import pytest
+import json
+from minion.actions.action_node import LLMActionNode
+from minion.providers.base_llm import BaseLLM
+from minion.message_types import Message
+from typing import List, Optional, AsyncIterator
+
+class MockLLM(BaseLLM):
+    def _setup(self) -> None:
+        """实现抽象方法 _setup"""
+        self._setup_retry_config()
+
+    async def generate(self, messages: List[Message], temperature: Optional[float] = None, **kwargs) -> str:
+        """实现抽象方法 generate"""
+        # 返回一个模拟的响应用于测试
+        return '{"answer": "mock response"}'
+
+    async def generate_stream(
+        self, messages: List[Message], temperature: Optional[float] = None, **kwargs
+    ) -> AsyncIterator[str]:
+        """实现抽象方法 generate_stream"""
+        async def mock_stream():
+            yield '{"answer": "mock stream response"}'
+        return mock_stream()
+
+@pytest.fixture
+def llm_action_node():
+    # 创建一个模拟的配置对象
+    from minion.configs.config import LLMConfig
+    mock_config = LLMConfig(
+        name="mock",
+        provider="mock",
+        api_key="mock-key",
+        model="mock-model"
+    )
+    return LLMActionNode(llm=MockLLM(config=mock_config))
+
+def test_normalize_response_json_string(llm_action_node):
+    # 测试JSON字符串输入
+    json_input = '''{
+        "feedback": "The provided answer correctly implements the circular shift functionality as described in the problem. It converts the integer to a string, determines the number of digits, and handles the case where the shift is greater than or equal to the number of digits by reversing the digits. The effective shift is calculated using modulo operation to ensure it fits within the bounds of the number of digits. The circular shift is then performed by concatenating the appropriate substrings. The solution is clear, accurate, and aligns well with the problem requirements. No logical inconsistencies, gaps, or errors are observed. The answer is a perfect match for the problem.",
+        "correct": true,
+        "score": 1
+    }'''
+    
+    result = llm_action_node.normalize_response(json_input)
+    # 验证返回的是提取并格式化后的JSON字符串
+    assert isinstance(result, str)
+    # 确保可以被解析回JSON对象
+    parsed_result = json.loads(result)
+    assert "feedback" in parsed_result
+    assert "correct" in parsed_result
+    assert "score" in parsed_result
+    assert parsed_result["correct"] is True
+    assert parsed_result["score"] == 1
+
+def test_normalize_response_dict_with_answer(llm_action_node):
+    # 测试包含answer字段的字典
+    input_dict = {"answer": "test answer"}
+    result = llm_action_node.normalize_response(input_dict)
+    assert result == input_dict
+
+def test_normalize_response_schema_format(llm_action_node):
+    # 测试schema格式的输入
+    schema_input = {
+        "properties": {
+            "answer": {
+                "default": "test answer",
+                "type": "string"
+            }
+        }
+    }
+    result = llm_action_node.normalize_response(schema_input, is_answer_format=True)
+    assert result == {"answer": "test answer"}
+
+def test_normalize_response_invalid_format(llm_action_node):
+    # 测试无效格式的输入
+    invalid_input = {"some": "data"}
+    result = llm_action_node.normalize_response(invalid_input)
+    assert result == {"some": "data"}
+
+def test_normalize_response_plain_string(llm_action_node):
+    # 测试普通字符串输入
+    plain_string = "This is a test string"
+    result = llm_action_node.normalize_response(plain_string)
+    assert result == plain_string 
\ No newline at end of file
diff --git a/tests/test_check.py b/tests/test_check.py
new file mode 100644
index 00000000..f71bb398
--- /dev/null
+++ b/tests/test_check.py
@@ -0,0 +1,146 @@
+import pytest
+from unittest.mock import Mock
+from minion.main.check import TestMinion
+from minion.main.input import Input
+
+
+class MockBrain:
+    """Mock brain class for testing"""
+    def __init__(self):
+        self.llm = Mock()
+
+
+@pytest.fixture
+def test_minion():
+    """Create a TestMinion instance with mock brain for testing"""
+    mock_brain = MockBrain()
+    mock_input = Input()  # Create an Input instance
+    return TestMinion(brain=mock_brain, input=mock_input)  # Pass input to TestMinion
+
+
+def test_extract_doctest_basic(test_minion):
+    query = '''
+    def add(x, y):
+        """Add two numbers together.
+        >>> add(2, 3)
+        5
+        >>> add(-1, 1)
+        0
+        """
+    '''
+    expected = [
+        "assert add(2, 3) == 5",
+        "assert add(-1, 1) == 0"
+    ]
+    
+    result = test_minion.extract_doctest(query)
+    assert result == expected
+
+
+def test_extract_doctest_with_strings(test_minion):
+    query = '''
+    def greet(name):
+        """Return a greeting string.
+        >>> greet("Alice")
+        'Hello, Alice!'
+        >>> greet("Bob")
+        "Hi, Bob!"
+        """
+    '''
+    expected = [
+        "assert greet(\"Alice\") == 'Hello, Alice!'",
+        "assert greet(\"Bob\") == \"Hi, Bob!\""
+    ]
+    
+    result = test_minion.extract_doctest(query)
+    assert result == expected
+
+
+def test_extract_doctest_empty(test_minion):
+    query = '''
+    def empty():
+        """A function without doctests."""
+        pass
+    '''
+    result = test_minion.extract_doctest(query)
+    assert result == []
+
+
+def test_extract_doctest_complex_types(test_minion):
+    query = '''
+    def process_list(items):
+        """Process a list of items.
+        >>> process_list([1, 2, 3])
+        [2, 4, 6]
+        >>> process_list([])
+        []
+        """
+    '''
+    expected = [
+        "assert process_list([1, 2, 3]) == [2, 4, 6]",
+        "assert process_list([]) == []"
+    ]
+    
+    result = test_minion.extract_doctest(query)
+    assert result == expected
+
+
+def test_extract_doctest_multiline(test_minion):
+    query = '''
+    def format_data(data):
+        """Format the data.
+        >>> format_data({"name": "test"})
+        {
+            'name': 'test'
+        }
+        """
+    '''
+    expected = [
+        "assert format_data({\"name\": \"test\"}) == {\n            'name': 'test'\n        }"
+    ]
+    
+    result = test_minion.extract_doctest(query)
+    assert result == expected
+
+
+def test_extract_doctest_with_mixed_quotes(test_minion):
+    query = '''
+    def format_string(s):
+        """Test with different quote styles.
+        >>> format_string('single')
+        "double quoted"
+        >>> format_string("double")
+        'single quoted'
+        >>> format_string(123)
+        456
+        """
+    '''
+    expected = [
+        "assert format_string('single') == \"double quoted\"",
+        "assert format_string(\"double\") == 'single quoted'",
+        "assert format_string(123) == 456"
+    ]
+    
+    result = test_minion.extract_doctest(query)
+    assert result == expected
+
+
+def test_extract_doctest_with_complex_multiline(test_minion):
+    query = '''
+    def complex_output():
+        """Test with complex multiline output.
+        >>> complex_output()
+        {
+            'key1': 'value1',
+            'key2': {
+                'nested': 'value'
+            }
+        }
+        """
+    '''
+    expected = [
+        "assert complex_output() == {\n            'key1': 'value1',\n            'key2': {\n                'nested': 'value'\n            }\n        }"
+    ]
+    
+    result = test_minion.extract_doctest(query)
+    assert result == expected
\ No newline at end of file