sample JfrUnit

Author: rieckpil

spring-boot-example/pom.xml

@@ -42,6 +42,7 @@
     <jgiven-maven-plugin.version>2.0.1</jgiven-maven-plugin.version>
     <junit-jupiter.version>5.11.4</junit-jupiter.version>
     <spring-cloud-aws.version>3.3.0</spring-cloud-aws.version>
+    <jfrunit.version>1.0.0.Alpha2</jfrunit.version>
   </properties>
 
   <dependencyManagement>
@@ -289,6 +290,12 @@
       <version>${gatling.version}</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>org.moditect.jfrunit</groupId>
+      <artifactId>jfrunit-core</artifactId>
+      <version>${jfrunit.version}</version>
+      <scope>test</scope>
+    </dependency>
 
     <!-- Behavior Driven Development using JGiven -->
     <dependency>

spring-boot-example/src/test/java/de/rieckpil/blog/jfrunit/BusinessService.java

@@ -0,0 +1,17 @@
+package de.rieckpil.blog.jfrunit;
+
+public class BusinessService {
+
+  void performTask() {
+
+    System.out.println("Performing task ...");
+
+    try {
+      Thread.sleep(1000L);
+      System.gc();
+    }
+    catch (InterruptedException e) {
+      throw new RuntimeException(e);
+    }
+  }
+}

spring-boot-example/src/test/java/de/rieckpil/blog/jfrunit/PerformanceTest.java

@@ -0,0 +1,33 @@
+package de.rieckpil.blog.jfrunit;
+
+import java.time.Duration;
+
+import org.junit.jupiter.api.Test;
+import org.moditect.jfrunit.EnableEvent;
+import org.moditect.jfrunit.JfrEventTest;
+import org.moditect.jfrunit.JfrEvents;
+import org.moditect.jfrunit.events.GarbageCollection;
+import org.moditect.jfrunit.events.JfrEventTypes;
+import org.moditect.jfrunit.events.ThreadSleep;
+
+import static org.moditect.jfrunit.JfrEventsAssert.assertThat;
+
+@JfrEventTest
+public class PerformanceTest {
+
+  public JfrEvents jfrEvents = new JfrEvents();
+
+  @Test
+  @EnableEvent(GarbageCollection.EVENT_NAME)
+  @EnableEvent(ThreadSleep.EVENT_NAME)
+  void shouldExecuteWithinTimeLimit() {
+
+    new BusinessService().performTask();
+
+    assertThat(jfrEvents)
+      .contains(JfrEventTypes.GARBAGE_COLLECTION);
+
+    assertThat(jfrEvents).contains(
+      JfrEventTypes.THREAD_SLEEP.withTime(Duration.ofMillis(1000)));
+  }
+}