[BAEL-3392] Formatted code examples for [BAEL-3392]

testing-modules/mockserver/src/main/java/com/baeldung/mock/server/ExpectationCallbackHandler.java

@@ -0,0 +1,23 @@
+package com.baeldung.mock.server;
+
+import org.mockserver.mock.action.ExpectationCallback;
+import org.mockserver.model.HttpRequest;
+import org.mockserver.model.HttpResponse;
+
+import static org.mockserver.model.HttpResponse.notFoundResponse;
+import static org.mockserver.model.HttpResponse.response;
+
+
+public class ExpectationCallbackHandler implements ExpectationCallback {
+
+    public HttpResponse handle(HttpRequest httpRequest) {
+        if (httpRequest.getPath().getValue().endsWith("/callback")) {
+            return httpResponse;
+        } else {
+            return notFoundResponse();
+        }
+    }
+
+    public static HttpResponse httpResponse = response()
+            .withStatusCode(200);
+}

testing-modules/mockserver/src/main/resources/logback.xml

@@ -0,0 +1,13 @@
+<?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>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>