diff --git build.gradle build.gradle
index 2f4167f..be41c28 100644
--- build.gradle
+++ build.gradle
@@ -106,6 +106,13 @@ subprojects {
       from sourceSets.main.java
     }
 
+    task testJar(type: Jar, overwrite: true) {
+      appendix = 'test'
+      from '../LICENSE'
+      from '../NOTICE'
+      from sourceSets.test.output
+    }
+
     scalaCompileOptions.useAnt = false
 
     configure(scalaCompileOptions.forkOptions) {
@@ -151,6 +158,12 @@ for ( sv in ['2_8_0', '2_9_1', '2_9_2', '2_10_1'] ) {
     startParameter.projectProperties = [scalaVersion: "${svInDot}"]
   }
 
+  tasks.create(name: "testJar_${sv}", type: GradleBuild) {
+    buildFile = './build.gradle'
+    tasks = ['core:testJar']
+    startParameter.projectProperties = [scalaVersion: "${svInDot}"]
+  }
+
   tasks.create(name: "docsJar_${sv}", type: GradleBuild) {
     buildFile = './build.gradle'
     tasks = ['core:docsJar']
@@ -170,13 +183,15 @@ for ( sv in ['2_8_0', '2_9_1', '2_9_2', '2_10_1'] ) {
   }
 }
 
-tasks.create(name: "jarAll", dependsOn: ['jar_core_2_8_0', 'jar_core_2_9_1', 'jar_core_2_9_2', 'jar_core_2_10_1', 'clients:jar', 'perf:jar', 'examples:jar', 'contrib:hadoop-consumer:jar', 'contrib:hadoop-producer:jar']) {
+tasks.create(name: "jarAll", dependsOn: ['jar_core_2_8_0', 'jar_core_2_9_1', 'jar_core_2_9_2', 'jar_core_2_10_1', 'clients:jar', 'perf:jar', 'examples:jar', 'contrib:hadoop-consumer:jar', 'contrib:hadoop-producer:jar', ':core:testJar']) {
 }
 
 tasks.create(name: "srcJarAll", dependsOn: ['srcJar_2_8_0', 'srcJar_2_9_1', 'srcJar_2_9_2', 'srcJar_2_10_1', 'clients:srcJar', 'perf:srcJar', 'examples:srcJar', 'contrib:hadoop-consumer:srcJar', 'contrib:hadoop-producer:srcJar']) { }
 
 tasks.create(name: "docsJarAll", dependsOn: ['docsJar_2_8_0', 'docsJar_2_9_1', 'docsJar_2_9_2', 'docsJar_2_10_1', 'clients:docsJar', 'perf:docsJar', 'examples:docsJar', 'contrib:hadoop-consumer:docsJar', 'contrib:hadoop-producer:docsJar']) { }
 
+tasks.create(name: "testJarAll", dependsOn: ['testJar_2_8_0', 'testJar_2_9_1', 'testJar_2_9_2', 'testJar_2_10_1']) { }
+
 tasks.create(name: "testAll", dependsOn: ['test_core_2_8_0', 'test_core_2_9_1', 'test_core_2_9_2', 'test_core_2_10_1', 'clients:test']) {
 }
 
@@ -271,12 +286,7 @@ project(':core') {
     dependsOn 'copyDependantLibs'
   }
 
-  task testJar(type: Jar) {
-    appendix = 'test'
-    from sourceSets.test.output
-  }
-
-  test {
+ test {
     testLogging {
         events "passed", "skipped", "failed"
         exceptionFormat = 'full'