diff --git a/core-java-modules/core-java-lang-math-3/src/test/java/com/baeldung/magicsquare/MagicSquare.java b/core-java-modules/core-java-lang-math-3/src/test/java/com/baeldung/magicsquare/MagicSquare.java
index b6e7ac24f5..f2ddd65ff7 100644
--- a/core-java-modules/core-java-lang-math-3/src/test/java/com/baeldung/magicsquare/MagicSquare.java
+++ b/core-java-modules/core-java-lang-math-3/src/test/java/com/baeldung/magicsquare/MagicSquare.java
@@ -1,7 +1,5 @@
 package com.baeldung.magicsquare;
 
-import org.junit.platform.commons.util.StringUtils;
-
 import java.util.stream.IntStream;
 
 public class MagicSquare {
diff --git a/spring-4/src/test/resources/logback-test.xml b/spring-4/src/test/resources/logback-test.xml
new file mode 100644
index 0000000000..a273ab5d26
--- /dev/null
+++ b/spring-4/src/test/resources/logback-test.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <logger name="org.springframework.test" level="WARN"/>
+
+    <logger name="org.springframework.boot.test" level="WARN"/>
+
+    <logger name="org.springframework.boot.actuate" level="WARN"/>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
\ No newline at end of file
diff --git a/spring-cloud-modules/spring-cloud-bus/spring-cloud-bus-server/src/test/resources/logback-test.xml b/spring-cloud-modules/spring-cloud-bus/spring-cloud-bus-server/src/test/resources/logback-test.xml
new file mode 100644
index 0000000000..6fc9dc1151
--- /dev/null
+++ b/spring-cloud-modules/spring-cloud-bus/spring-cloud-bus-server/src/test/resources/logback-test.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <logger name="org.springframework.boot.test" level="WARN"/>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
diff --git a/spring-cloud-modules/spring-cloud-functions/src/test/resources/logback-test.xml b/spring-cloud-modules/spring-cloud-functions/src/test/resources/logback-test.xml
index 8d4771e308..41283752a9 100644
--- a/spring-cloud-modules/spring-cloud-functions/src/test/resources/logback-test.xml
+++ b/spring-cloud-modules/spring-cloud-functions/src/test/resources/logback-test.xml
@@ -6,6 +6,8 @@
         </encoder>
     </appender>
 
+    <logger name="org.springframework.boot.test" level="WARN"/>
+
     <root level="INFO">
         <appender-ref ref="STDOUT" />
     </root>
diff --git a/spring-security-modules/spring-security-ldap/src/test/java/com/baeldung/SpringContextTest.java b/spring-security-modules/spring-security-ldap/src/test/java/com/baeldung/SpringContextTest.java
index a15ca31980..62b1ae908b 100644
--- a/spring-security-modules/spring-security-ldap/src/test/java/com/baeldung/SpringContextTest.java
+++ b/spring-security-modules/spring-security-ldap/src/test/java/com/baeldung/SpringContextTest.java
@@ -1,6 +1,5 @@
 package com.baeldung;
 
-import com.baeldung.SampleLDAPApplication;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.springframework.boot.test.context.SpringBootTest;
diff --git a/spring-security-modules/spring-security-ldap/src/test/resources/logback-test.xml b/spring-security-modules/spring-security-ldap/src/test/resources/logback-test.xml
new file mode 100644
index 0000000000..56af2d397e
--- /dev/null
+++ b/spring-security-modules/spring-security-ldap/src/test/resources/logback-test.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <logger name="org.springframework" level="WARN" />
+    <logger name="org.springframework.transaction" level="WARN" />
+
+    <!-- in order to debug some marshalling issues, this needs to be TRACE -->
+    <logger name="org.springframework.web.servlet.mvc" level="WARN" />
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
\ No newline at end of file