添加PyQt GUI自动化测试套件

新增5个GUI测试模块，覆盖所有主要功能：
- test_login_gui.py: 登录和密码管理测试（7个测试）
- test_stock_gui.py: 库存管理测试（4个测试）
- test_raw_material_gui.py: 原料管理测试（7个测试）
- test_garment_gui.py: 款式管理测试（2个测试）
- test_purchase_order_gui.py: 采购单生成测试（2个测试）

测试特点：
- 真实GUI交互测试（填写表单、点击按钮、搜索过滤）
- 业务逻辑验证（重复数据拒绝、空值验证、计算正确性）
- 独立测试环境（临时数据库，自动清理）
- 自动化消息框（Mock QMessageBox）

总计22个GUI测试，全部通过 ✓

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

test/test_stock_gui.py

@@ -0,0 +1,161 @@
+"""
+库存管理GUI测试模块
+使用PyQt测试框架测试库存入库和查询功能
+"""
+
+import unittest
+import os
+import sys
+import tempfile
+from PyQt5.QtWidgets import QApplication, QMessageBox, QInputDialog
+from PyQt5.QtTest import QTest
+from PyQt5.QtCore import Qt
+
+# 添加父目录到路径以导入模块
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+from database import DatabaseManager
+from stock_dialog import StockInDialog
+
+
+class TestStockGUI(unittest.TestCase):
+    """库存管理GUI测试类"""
+
+    @classmethod
+    def setUpClass(cls):
+        """测试类初始化：创建QApplication实例"""
+        cls.app = QApplication.instance()
+        if cls.app is None:
+            cls.app = QApplication(sys.argv)
+
+    def setUp(self):
+        """每个测试前准备：创建临时数据库和对话框"""
+        self.temp_dir = tempfile.mkdtemp()
+        self.db_path = os.path.join(self.temp_dir, "test_fabric.db")
+        self.db_manager = DatabaseManager(self.db_path)
+
+        # 添加测试原料
+        with self.db_manager.get_conn() as conn:
+            conn.execute('''
+                INSERT INTO fabrics (model, category, color, supplier, unit, timestamp)
+                VALUES (?, ?, ?, ?, ?, datetime('now'))
+            ''', ("TEST-STOCK-001", "布料", "白色", "供应商A", "米"))
+            conn.commit()
+
+        # 创建对话框实例
+        self.dialog = StockInDialog(self.db_path)
+
+        # 保存原始消息框和输入框
+        self._original_msgbox = QMessageBox.information
+        self._original_warning = QMessageBox.warning
+        self._original_input = QInputDialog.getDouble
+
+        # Mock消息框
+        QMessageBox.information = lambda *args, **kwargs: None
+        QMessageBox.warning = lambda *args, **kwargs: None
+
+    def tearDown(self):
+        """每个测试后清理"""
+        # 恢复消息框
+        QMessageBox.information = self._original_msgbox
+        QMessageBox.warning = self._original_warning
+        QInputDialog.getDouble = self._original_input
+
+        # 关闭对话框
+        self.dialog.close()
+        self.dialog.deleteLater()
+
+        # 清理数据库
+        import gc
+        gc.collect()
+        try:
+            if os.path.exists(self.db_path):
+                os.remove(self.db_path)
+            if os.path.exists(self.temp_dir):
+                os.rmdir(self.temp_dir)
+        except:
+            pass
+
+    # ========== 库存加载测试 ==========
+
+    def test_load_models(self):
+        """测试加载原料列表"""
+        self.dialog.load_models()
+
+        # 验证表格有数据
+        self.assertGreater(self.dialog.table.rowCount(), 0, "表格应该有数据")
+
+        # 验证第一行是测试数据
+        model_item = self.dialog.table.item(0, 0)
+        self.assertIsNotNone(model_item, "应该有型号数据")
+        self.assertEqual(model_item.text(), "TEST-STOCK-001", "型号应该匹配")
+
+    def test_search_models(self):
+        """测试搜索原料"""
+        # 添加更多测试数据
+        with self.dialog.get_conn() as conn:
+            conn.execute('''
+                INSERT INTO fabrics (model, category, color, unit, timestamp)
+                VALUES (?, ?, ?, ?, datetime('now'))
+            ''', ("OTHER-001", "布料", "黑色", "米"))
+            conn.commit()
+
+        # 搜索特定型号
+        self.dialog.search_input.setText("TEST-STOCK")
+        self.dialog.load_models()
+
+        # 验证只显示匹配的结果
+        row_count = self.dialog.table.rowCount()
+        for row in range(row_count):
+            model_item = self.dialog.table.item(row, 0)
+            if model_item:
+                self.assertIn("TEST-STOCK", model_item.text(), "应该只显示匹配的型号")
+
+    # ========== 库存计算测试 ==========
+
+    def test_stock_calculation(self):
+        """测试库存数量计算"""
+        # 添加入库记录
+        with self.dialog.get_conn() as conn:
+            conn.execute('''
+                INSERT INTO fabric_stock_in (model, quantity, unit, purchase_date)
+                VALUES (?, ?, ?, ?)
+            ''', ("TEST-STOCK-001", 100.0, "米", "2024-01-01"))
+            conn.commit()
+
+        # 刷新表格
+        self.dialog.load_models()
+
+        # 验证库存显示
+        remaining_item = self.dialog.table.item(0, 4)
+        self.assertIsNotNone(remaining_item, "应该有库存数据")
+        remaining = float(remaining_item.text())
+        self.assertEqual(remaining, 100.0, "库存应该是100.0")
+
+    def test_stock_with_consumption(self):
+        """测试库存扣除消耗后的计算"""
+        # 添加入库记录
+        with self.dialog.get_conn() as conn:
+            conn.execute('''
+                INSERT INTO fabric_stock_in (model, quantity, unit, purchase_date)
+                VALUES (?, ?, ?, ?)
+            ''', ("TEST-STOCK-001", 100.0, "米", "2024-01-01"))
+
+            # 添加消耗记录
+            conn.execute('''
+                INSERT INTO fabric_consumption (model, style_number, consume_quantity, consume_date, unit)
+                VALUES (?, ?, ?, ?, ?)
+            ''', ("TEST-STOCK-001", "款式001", 30.0, "2024-01-02", "米"))
+            conn.commit()
+
+        # 刷新表格
+        self.dialog.load_models()
+
+        # 验证库存显示（100 - 30 = 70）
+        remaining_item = self.dialog.table.item(0, 4)
+        remaining = float(remaining_item.text())
+        self.assertEqual(remaining, 70.0, "库存应该是70.0（100-30）")
+
+
+if __name__ == "__main__":
+    unittest.main()