fix: repair shadow candidate planning and site runtime errors

ruoyi-admin/src/test/java/com/ruoyi/Dzp/DzpSendTest.java

@@ -0,0 +1,98 @@
+package com.ruoyi.Dzp;
+
+import com.ruoyi.Dzp.domain.basLed;
+import com.ruoyi.Dzp.mapper.BasLedMapper;
+import org.junit.jupiter.api.Test;
+import org.springframework.test.util.ReflectionTestUtils;
+import java.io.IOException;
+import java.util.List;
+import java.util.concurrent.*;
+import static org.assertj.core.api.Assertions.*;
+import static org.mockito.Mockito.*;
+import static org.mockito.ArgumentMatchers.*;
+
+class DzpSendTest {
+    @Test
+    void failedExchangeClosesItsSocketAndDoesNotAcknowledgeTheDisplay() throws Exception {
+        var socket = mock(MyUdpSocket.class);
+        var sender = new DzpSend() { @Override MyUdpSocket openSocket() { return socket; } };
+        var mapper = mock(BasLedMapper.class);
+        ReflectionTestUtils.setField(sender, "mapper", mapper);
+        var record = new basLed(); record.setModel("3"); record.setSendFlag("0"); record.setIpAddress("127.0.0.1"); record.setErrorMsg("alarm");
+        when(mapper.selectBasLedList(any())).thenAnswer(call -> call.getArgument(0, basLed.class).getId() == 1 ? List.of(record) : List.of());
+        try (var protocol = mockStatic(ProtocolDemo.class)) {
+            protocol.when(() -> ProtocolDemo.demo_play_chapterschedule2(socket, "127.0.0.1", "报警信息", "alarm"))
+                    .thenThrow(new IllegalStateException("test send failure")).thenReturn(true);
+            assertThatThrownBy(sender::ErrorLed).hasMessage("test send failure");
+            verify(socket).close();
+            verify(mapper, never()).updateBasLed(any());
+            assertThat(record.getSendFlag()).isEqualTo("0");
+            sender.ErrorLed();
+            verify(socket, times(2)).close();
+            verify(mapper).updateBasLed(record);
+        }
+    }
+
+    @Test
+    void busyLocalPortDefersOtherTimerWithoutBlockingOrChangingRows() throws Exception {
+        var entered = new CountDownLatch(1);
+        var release = new CountDownLatch(1);
+        var sender = new DzpSend() {
+            @Override MyUdpSocket openSocket() throws IOException {
+                entered.countDown();
+                try { if (!release.await(3, TimeUnit.SECONDS)) throw new IOException("test timeout"); }
+                catch (InterruptedException e) { Thread.currentThread().interrupt(); throw new IOException(e); }
+                throw new IOException("fixture port failure");
+            }
+        };
+        var mapper = mock(BasLedMapper.class);
+        ReflectionTestUtils.setField(sender, "mapper", mapper);
+        var record = new basLed(); record.setModel("1"); record.setSendFlag("0");
+        when(mapper.selectBasLedList(any())).thenReturn(List.of(record));
+        var executor = Executors.newFixedThreadPool(2);
+        try {
+            var first = executor.submit(() -> { assertThatThrownBy(sender::InLed).isInstanceOf(IOException.class); });
+            assertThat(entered.await(2, TimeUnit.SECONDS)).isTrue();
+            executor.submit(() -> { sender.ErrorLed(); return null; }).get(1, TimeUnit.SECONDS);
+            verify(mapper, times(1)).selectBasLedList(any());
+            verify(mapper, never()).updateBasLed(any());
+            release.countDown();
+            first.get(2, TimeUnit.SECONDS);
+        } finally { release.countDown(); executor.shutdownNow(); }
+    }
+
+    @Test
+    void eachScheduledMessageBuildsItsOwnPayload() throws Exception {
+        try (var payloads = mockConstruction(LEDSender2010.class,
+                (sender, context) -> when(sender.GetDataSize()).thenReturn((1 << 21) + 1))) {
+            var socket = mock(MyUdpSocket.class);
+            assertThat(ProtocolDemo.demo_play_chapterschedule2(socket, "127.0.0.1", "title1", "one")).isFalse();
+            assertThat(ProtocolDemo.demo_play_chapterschedule2(socket, "127.0.0.1", "title2", "two")).isFalse();
+            assertThat(payloads.constructed()).hasSize(2);
+            verify(payloads.constructed().get(0)).GetDataSize();
+            verify(payloads.constructed().get(1)).GetDataSize();
+            verifyNoInteractions(socket);
+        }
+    }
+
+    @Test
+    void transientSocketErrorsStayInsideTheBoundedProtocolRetry() throws Exception {
+        var socket = mock(MyUdpSocket.class);
+        var payload = mock(LEDSender2010.class);
+        doThrow(new IOException("transient send")).doNothing().when(socket).send(anyString(), anyInt(), any(), anyInt());
+        when(socket.receive()).thenThrow(new java.io.UncheckedIOException(new IOException("transient receive"))).thenReturn(1);
+        when(payload.parse_trans_respond(any(), anyInt(), anyInt(), anyInt())).thenReturn(1);
+        assertThat(ProtocolDemo.send_data1(socket, payload, "127.0.0.1")).isTrue();
+        verify(socket, times(3)).send(anyString(), anyInt(), any(), anyInt());
+        verify(socket, times(3)).receive();
+    }
+
+    @Test
+    void persistentSendFailureStopsAfterFiveAttempts() throws Exception {
+        var socket = mock(MyUdpSocket.class);
+        doThrow(new IOException("unreachable")).when(socket).send(anyString(), anyInt(), any(), anyInt());
+        assertThat(ProtocolDemo.send_data1(socket, mock(LEDSender2010.class), "127.0.0.1")).isFalse();
+        verify(socket, times(5)).send(anyString(), anyInt(), any(), anyInt());
+        verify(socket, never()).receive();
+    }
+}