test: OPFSEngine 12项mock测试 + Schema约束5项测试 → 543 passed

tests/table/schema.test.ts

@@ -145,6 +145,30 @@ describe('Schema 边缘场景', () => {
     });
   });
 
+  // ---- 约束校验（v0.2.3） ----
+  describe('约束校验', () => {
+    it('string 超出 maxLength 抛出错误', () => {
+      expect(() => checkFieldType('t', 'c', 'string', 'hello', { type: 'string', maxLength: 3 }))
+        .toThrow('exceeds max length');
+    });
+    it('string 未超 maxLength 不报错', () => {
+      expect(() => checkFieldType('t', 'c', 'string', 'hi', { type: 'string', maxLength: 5 }))
+        .not.toThrow();
+    });
+    it('number 低于 min 抛出错误', () => {
+      expect(() => checkFieldType('t', 'c', 'number', -5, { type: 'number', min: 0 }))
+        .toThrow('below minimum');
+    });
+    it('number 高于 max 抛出错误', () => {
+      expect(() => checkFieldType('t', 'c', 'number', 200, { type: 'number', max: 100 }))
+        .toThrow('above maximum');
+    });
+    it('number 在范围内不报错', () => {
+      expect(() => checkFieldType('t', 'c', 'number', 50, { type: 'number', min: 0, max: 100 }))
+        .not.toThrow();
+    });
+  });
+
   // ---- astColumnToColumnDef ----
 
   describe('astColumnToColumnDef', () => {