"""
安全检查器单元测试
"""

import unittest
import sys
from pathlib import Path

# 添加项目根目录到路径
sys.path.insert(0, str(Path(__file__).parent.parent))

from safety.rule_checker import RuleChecker, check_code_safety


class TestRuleChecker(unittest.TestCase):
    """规则检查器测试"""
    
    def setUp(self):
        self.checker = RuleChecker()
    
    # ========== 硬性禁止测试 ==========
    
    def test_block_socket_import(self):
        """测试禁止 socket 模块"""
        code = "import socket\ns = socket.socket()"
        result = self.checker.check(code)
        self.assertFalse(result.passed)
        self.assertTrue(any('socket' in v for v in result.violations))
    
    def test_block_subprocess_import(self):
        """测试禁止 subprocess 模块"""
        code = "import subprocess\nsubprocess.run(['ls'])"
        result = self.checker.check(code)
        self.assertFalse(result.passed)
        self.assertTrue(any('subprocess' in v for v in result.violations))
    
    def test_block_eval(self):
        """测试禁止 eval"""
        code = "result = eval('1+1')"
        result = self.checker.check(code)
        self.assertFalse(result.passed)
        self.assertTrue(any('eval' in v for v in result.violations))
    
    def test_block_exec(self):
        """测试禁止 exec"""
        code = "exec('print(1)')"
        result = self.checker.check(code)
        self.assertFalse(result.passed)
        self.assertTrue(any('exec' in v for v in result.violations))
    
    def test_block_os_system(self):
        """测试禁止 os.system"""
        code = "import os\nos.system('dir')"
        result = self.checker.check(code)
        self.assertFalse(result.passed)
        self.assertTrue(any('os.system' in v for v in result.violations))
    
    def test_block_os_popen(self):
        """测试禁止 os.popen"""
        code = "import os\nos.popen('dir')"
        result = self.checker.check(code)
        self.assertFalse(result.passed)
        self.assertTrue(any('os.popen' in v for v in result.violations))
    
    # ========== 警告测试 ==========
    
    def test_warn_requests_import(self):
        """测试 requests 模块产生警告"""
        code = "import requests\nresponse = requests.get('http://example.com')"
        result = self.checker.check(code)
        self.assertTrue(result.passed)  # 不应该被阻止
        self.assertTrue(any('requests' in w for w in result.warnings))
    
    def test_warn_os_remove(self):
        """测试 os.remove 产生警告"""
        code = "import os\nos.remove('file.txt')"
        result = self.checker.check(code)
        self.assertTrue(result.passed)  # 不应该被阻止
        self.assertTrue(any('os.remove' in w for w in result.warnings))
    
    def test_warn_shutil_rmtree(self):
        """测试 shutil.rmtree 产生警告"""
        code = "import shutil\nshutil.rmtree('folder')"
        result = self.checker.check(code)
        self.assertTrue(result.passed)  # 不应该被阻止
        self.assertTrue(any('shutil.rmtree' in w for w in result.warnings))
    
    # ========== 安全代码测试 ==========
    
    def test_safe_file_copy(self):
        """测试安全的文件复制代码"""
        code = """
import shutil
from pathlib import Path

INPUT_DIR = Path('workspace/input')
OUTPUT_DIR = Path('workspace/output')

for f in INPUT_DIR.glob('*'):
    shutil.copy(f, OUTPUT_DIR / f.name)
"""
        result = self.checker.check(code)
        self.assertTrue(result.passed)
        self.assertEqual(len(result.violations), 0)
    
    def test_safe_image_processing(self):
        """测试安全的图片处理代码"""
        code = """
from PIL import Image
from pathlib import Path

INPUT_DIR = Path('workspace/input')
OUTPUT_DIR = Path('workspace/output')

for img_path in INPUT_DIR.glob('*.png'):
    img = Image.open(img_path)
    img = img.resize((100, 100))
    img.save(OUTPUT_DIR / img_path.name)
"""
        result = self.checker.check(code)
        self.assertTrue(result.passed)
        self.assertEqual(len(result.violations), 0)
    
    def test_safe_excel_processing(self):
        """测试安全的 Excel 处理代码"""
        code = """
import openpyxl
from pathlib import Path

INPUT_DIR = Path('workspace/input')
OUTPUT_DIR = Path('workspace/output')

for xlsx_path in INPUT_DIR.glob('*.xlsx'):
    wb = openpyxl.load_workbook(xlsx_path)
    ws = wb.active
    ws['A1'] = 'Modified'
    wb.save(OUTPUT_DIR / xlsx_path.name)
"""
        result = self.checker.check(code)
        self.assertTrue(result.passed)
        self.assertEqual(len(result.violations), 0)


class TestCheckCodeSafety(unittest.TestCase):
    """便捷函数测试"""
    
    def test_convenience_function(self):
        """测试便捷函数"""
        result = check_code_safety("print('hello')")
        self.assertTrue(result.passed)
    
    def test_convenience_function_block(self):
        """测试便捷函数阻止危险代码"""
        result = check_code_safety("import socket")
        self.assertFalse(result.passed)


if __name__ == '__main__':
    unittest.main()