优化

warehouse-overseas-service/src/test/java/com/baiyue/warehouse/service/PalletLabelPrintServiceTest.java

@@ -8,6 +8,7 @@ import com.baiyue.warehouse.entity.WarehousePalletEntity;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.mockito.ArgumentCaptor;
+import org.springframework.cloud.client.circuitbreaker.NoFallbackAvailableException;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.test.util.ReflectionTestUtils;
@@ -66,6 +67,19 @@ class PalletLabelPrintServiceTest {
         verifyNoInteractions(print);
     }
 
+    @Test
+    void mapsCircuitBreakerWrappedPrintFailureToServiceUnavailable() {
+        when(print.generateInboundMarks(anyString(), anyString(), any()))
+            .thenThrow(new NoFallbackAvailableException("No fallback available.",
+                new IllegalStateException("No instances available for print-service")));
+
+        assertThatThrownBy(() -> service.print(200L, 9L, "request-1"))
+            .isInstanceOfSatisfying(BizException.class, exception -> {
+                assertThat(exception.getResultCode()).isEqualTo(ResultCode.SERVICE_UNAVAILABLE);
+                assertThat(exception.getMessage()).contains("打印服务暂不可用");
+            });
+    }
+
     @Test
     void rejectsJsonErrorInsteadOfDownloadingItAsPdf() {
         when(print.generateInboundMarks(anyString(), anyString(), any()))