test: 更新单元测试

Author: ArgoZhang

test/UnitTest/Services/DefaultNetworkMonitorServiceTest.cs

@@ -18,6 +18,7 @@ public async Task GetNetworkMonitorState_Ok()
         });
         var service = Context.Services.GetRequiredService<INetworkMonitorService>();
         var state = await service.GetNetworkMonitorState(CancellationToken.None);
+        Assert.NotNull(state);
         Assert.Equal("4g", state.NetworkType);
         Assert.Equal(10, state.Downlink);
         Assert.Equal(100, state.RTT);

test/UnitTest/Services/TcpSocketFactoryTest.cs

@@ -637,7 +637,7 @@ public async Task DelimiterDataPackageHandler_Ok()
         var ex = Assert.Throws<ArgumentNullException>(() => new DelimiterDataPackageHandler(string.Empty));
         Assert.NotNull(ex);
 
-        ex = Assert.Throws<ArgumentNullException>(() => new DelimiterDataPackageHandler((byte[])null!));
+        ex = Assert.Throws<ArgumentNullException>(() => new DelimiterDataPackageHandler(null!));
         Assert.NotNull(ex);
     }