chore: 异常测试

Storage/Storage.Test/ExceptionTest.cs

@@ -0,0 +1,16 @@
+using NUnit.Framework;
+using LeanCloud.Storage;
+
+namespace LeanCloud.Test {
+    public class ExceptionTest {
+        [Test]
+        public void LeanCloudException() {
+            try {
+                throw new LCException(123, "hello, world");
+            } catch (LCException e) {
+                TestContext.WriteLine($"{e.Code} : {e.Message}");
+                Assert.AreEqual(e.Code, 123);
+            }
+        }
+    }
+}