packaging test use dir of jars rather than uberjar

Author: andyb-elastic

buildSrc/src/main/groovy/org/elasticsearch/gradle/vagrant/VagrantPropertiesExtension.groovy

@@ -40,6 +40,9 @@ class VagrantPropertiesExtension {
     @Input
     Boolean inheritTestUtils
 
+    @Input
+    String testMainClass
+
     VagrantPropertiesExtension(List<String> availableBoxes) {
         this.boxes = availableBoxes
         this.batsDir = 'src/test/resources/packaging'

buildSrc/src/main/groovy/org/elasticsearch/gradle/vagrant/VagrantTestPlugin.groovy

@@ -389,7 +389,7 @@ class VagrantTestPlugin implements Plugin<Project> {
                 environmentVars vagrantEnvVars
                 dependsOn up, setupPackagingTest
                 finalizedBy halt
-                args '--command', 'set -e; for jar in $PACKAGING_TESTS/*.jar; do java -jar $jar; done'
+                args '--command', "java -cp \"\$PACKAGING_TESTS/*\" ${-> project.extensions.esvagrant.testMainClass}"
             }
 
             TaskExecutionAdapter groovyPackagingReproListener = createReproListener(project, groovyPackagingTest.path)

qa/vagrant/build.gradle

@@ -19,8 +19,6 @@
 
 plugins {
   id 'groovy'
-  id 'application'
-  id 'com.github.johnrengelman.shadow' version '2.0.2'
   id 'elasticsearch.build'
   id 'elasticsearch.vagrantsupport'
   id 'elasticsearch.vagrant'
@@ -29,14 +27,12 @@ plugins {
 dependencies {
   compile localGroovy()
   compile "org.hamcrest:hamcrest-all:${versions.hamcrest}"
-  runtime project(':libs:elasticsearch-core') // needs to be on the classpath for JarHell
-  packagingTest project(path: project.path, configuration: 'shadow')
-}
 
-shadowJar {
-  dependencies {
-    exclude(project(":libs:elasticsearch-core")) // isn't needed in tests
-  }
+  // needs to be on the classpath for JarHell but not actually needed for tests
+  runtime project(':libs:elasticsearch-core')
+
+  // pulls in the jar built by this project and its dependencies
+  packagingTest project(path: project.path, configuration: 'runtime')
 }
 
 List<String> plugins = []
@@ -59,7 +55,9 @@ setupPackagingTest {
   }
 }
 
-mainClassName = 'org.elasticsearch.packaging.PackagingMain'
+esvagrant {
+  testMainClass 'org.elasticsearch.packaging.PackagingMain'
+}
 
 tasks.test.enabled = false