From a706859711f995bfa53c358e20101f77377d6fac Mon Sep 17 00:00:00 2001
From: Sergey Matvienko <smatvienko@thingsboard.io>
Date: Thu, 22 Jan 2026 19:13:46 +0100
Subject: [PATCH] tests: log MockMvc error responses >= 400 for easier
 investigation

---
 .../thingsboard/server/controller/AbstractWebTest.java | 10 +++++++++-
 application/src/test/resources/logback-test.xml        |  3 +++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/application/src/test/java/org/thingsboard/server/controller/AbstractWebTest.java b/application/src/test/java/org/thingsboard/server/controller/AbstractWebTest.java
index 599dcf3138..44c383a5f0 100644
--- a/application/src/test/java/org/thingsboard/server/controller/AbstractWebTest.java
+++ b/application/src/test/java/org/thingsboard/server/controller/AbstractWebTest.java
@@ -60,6 +60,7 @@ import org.springframework.test.web.servlet.ResultActions;
 import org.springframework.test.web.servlet.ResultMatcher;
 import org.springframework.test.web.servlet.request.MockHttpServletRequestBuilder;
 import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+import org.springframework.test.web.servlet.result.MockMvcResultHandlers;
 import org.springframework.util.LinkedMultiValueMap;
 import org.springframework.util.MultiValueMap;
 import org.springframework.web.context.WebApplicationContext;
@@ -330,7 +331,14 @@ public abstract class AbstractWebTest extends AbstractInMemoryStorageTest {
 
         if (this.mockMvc == null) {
             this.mockMvc = webAppContextSetup(webApplicationContext)
-                    .apply(springSecurity()).build();
+                    .apply(springSecurity())
+                    // conditional printing of non 2xx responses
+                    .alwaysDo(result -> {
+                        if (result.getResponse().getStatus() >= 400) {
+                            MockMvcResultHandlers.log().handle(result);
+                        }
+                    })
+                    .build();
         }
         loginSysAdmin();
 
diff --git a/application/src/test/resources/logback-test.xml b/application/src/test/resources/logback-test.xml
index eafb4e1fba..6faaf97536 100644
--- a/application/src/test/resources/logback-test.xml
+++ b/application/src/test/resources/logback-test.xml
@@ -45,6 +45,9 @@
     <!-- Avoiding multiple logs like: The cache 'relations' is not recording statistics. No meters except 'cache.size' will be registered. Call 'Caffeine#recordStats()' prior to building the cache for metrics to be recorded.-->
     <logger name="io.micrometer.core.instrument.binder.cache.CaffeineCacheMetrics" level="ERROR"/>
 
+    <!-- Log MvcMock result with status >=400 -->
+    <logger name="org.springframework.test.web.servlet.result" level="DEBUG"/>
+
     <root level="WARN">
         <appender-ref ref="console"/>
     </root>