Run cassandra test last in separate vm

It’s super slow and uses a lot of memory.

Author: tylerbenson

dd-java-agent-ittests/dd-java-agent-ittests.gradle

@@ -60,7 +60,37 @@ test {
   if (project.hasProperty("disableShadowRelocate") && disableShadowRelocate) {
     exclude 'com/datadoghq/agent/ShadowPackageRenamingTest.class'
   }
+
+  useJUnit {
+    excludeCategories 'com.datadoghq.agent.integration.ExpensiveTest'
+  }
+}
+
+task expensiveTest(type: Test) {
+  jvmArgs "-Ddd.trace.configurationFile=${project.buildDir}/resources/test/dd-trace.yaml"
+  jvmArgs "-Ddd.slf4j.simpleLogger.defaultLogLevel=debug"
+  jvmArgs "-Dorg.slf4j.simpleLogger.defaultLogLevel=debug"
+  jvmArgs "-Ddd.deps.org.jboss.byteman.verbose=true"
+  jvmArgs "-Dorg.jboss.byteman.verbose=true"
+
+  doFirst {
+    // Defining here to allow jacoco to be first on the command line.
+    jvmArgs "-javaagent:${project(':dd-java-agent').tasks.shadowJar.archivePath}"
+  }
+
+  testLogging {
+    events "started"
+  }
+
+  if (project.hasProperty("disableShadowRelocate") && disableShadowRelocate) {
+    exclude 'com/datadoghq/agent/ShadowPackageRenamingTest.class'
+  }
+
+  useJUnit {
+    includeCategories 'com.datadoghq.agent.integration.ExpensiveTest'
+  }
 }
+test.finalizedBy expensiveTest
 
 test.dependsOn project(':dd-java-agent').shadowJar
 

dd-java-agent-ittests/src/test/java/com/datadoghq/agent/integration/CassandraIntegrationTest.java

@@ -12,8 +12,10 @@
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
+import org.junit.experimental.categories.Category;
 
 /** Created by gpolaert on 6/2/17. */
+@Category(ExpensiveTest.class)
 public class CassandraIntegrationTest {
 
   @Before

dd-java-agent-ittests/src/test/java/com/datadoghq/agent/integration/ExpensiveTest.java

@@ -0,0 +1,3 @@
+package com.datadoghq.agent.integration;
+
+interface ExpensiveTest {}