Exception handler test coverage added

rest/src/main/java/com/netflix/conductor/rest/controllers/ApplicationExceptionMapper.java

@@ -15,7 +15,6 @@
 import java.util.HashMap;
 import java.util.Map;
 
-import org.apache.catalina.connector.ClientAbortException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.core.annotation.Order;
@@ -36,6 +35,7 @@
 import jakarta.servlet.http.HttpServletRequest;
 
 @RestControllerAdvice
+@Order(ValidationExceptionMapper.ORDER + 1)
 public class ApplicationExceptionMapper {
 
     private static final Logger LOGGER = LoggerFactory.getLogger(ApplicationExceptionMapper.class);
@@ -53,16 +53,7 @@ public class ApplicationExceptionMapper {
         EXCEPTION_STATUS_MAP.put(NoResourceFoundException.class, HttpStatus.NOT_FOUND);
     }
 
-    @ExceptionHandler(ClientAbortException.class)
-    @Order(ValidationExceptionMapper.ORDER + 1)
-    public void handleClientAborted(
-            HttpServletRequest request, ClientAbortException clientAbortException) {
-        logException(
-                request, clientAbortException); // socket closed, cannot return any error response
-    }
-
     @ExceptionHandler(Throwable.class)
-    @Order(ValidationExceptionMapper.ORDER + 2)
     public ResponseEntity<ErrorResponse> handleAll(HttpServletRequest request, Throwable th) {
         logException(request, th);
 

rest/src/test/java/com/netflix/conductor/rest/controllers/ApplicationExceptionMapperTest.java

@@ -0,0 +1,90 @@
+/*
+ * Copyright 2024 Conductor Authors.
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+package com.netflix.conductor.rest.controllers;
+
+import java.util.Collections;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.MockedStatic;
+import org.mockito.Mockito;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.MediaType;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+
+import com.netflix.conductor.model.TaskModel;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import static org.mockito.Mockito.*;
+import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
+
+public class ApplicationExceptionMapperTest {
+
+    private QueueAdminResource queueAdminResource;
+
+    private MockMvc mockMvc;
+
+    private static MockedStatic<LoggerFactory> mockLoggerFactory;
+    private static final Logger logger = mock(Logger.class);
+
+    @Before
+    public void before() {
+        mockLoggerFactory = Mockito.mockStatic(LoggerFactory.class);
+        when(LoggerFactory.getLogger(ApplicationExceptionMapper.class)).thenReturn(logger);
+
+        this.queueAdminResource = mock(QueueAdminResource.class);
+        this.mockMvc =
+                MockMvcBuilders.standaloneSetup(this.queueAdminResource)
+                        .setControllerAdvice(new ApplicationExceptionMapper())
+                        .build();
+    }
+
+    @After
+    public void after() {
+        mockLoggerFactory.close();
+    }
+
+    @Test
+    public void testException() throws Exception {
+        var exception = new Exception();
+        // pick a method that raises a generic exception
+        doThrow(exception).when(this.queueAdminResource).update(any(), any(), any(), any());
+
+        // verify we do send an error response
+        this.mockMvc
+                .perform(
+                        MockMvcRequestBuilders.post(
+                                        "/api/queue/update/workflowId/taskRefName/{status}",
+                                        TaskModel.Status.SKIPPED)
+                                .contentType(MediaType.APPLICATION_JSON)
+                                .content(
+                                        new ObjectMapper()
+                                                .writeValueAsString(Collections.emptyMap())))
+                .andDo(print())
+                .andExpect(status().is5xxServerError());
+        // verify the error was logged
+        verify(logger)
+                .error(
+                        "Error {} url: '{}'",
+                        "Exception",
+                        "/api/queue/update/workflowId/taskRefName/SKIPPED",
+                        exception);
+        verifyNoMoreInteractions(logger);
+    }
+}