BAEL-2947 - Guide to Junit 4 Rules

testing-modules/junit-4/src/test/java/com/baeldung/rules/MessageLogger.java

@@ -0,0 +1,34 @@
+package com.baeldung.rules;
+
+import org.junit.rules.TestRule;
+import org.junit.runner.Description;
+import org.junit.runners.model.Statement;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class MessageLogger implements TestRule {
+
+    private static final Logger LOG = LoggerFactory.getLogger(MessageLogger.class);
+
+    private String message;
+
+    public MessageLogger(String message) {
+        this.message = message;
+    }
+
+    @Override
+    public Statement apply(final Statement base, Description description) {
+        return new Statement() {
+            @Override
+            public void evaluate() throws Throwable {
+                try {
+                    LOG.info("Starting: {}", message);
+                    base.evaluate();
+                } finally {
+                    LOG.info("Finished: {}", message);
+                }
+            }
+        };
+    }
+
+}