Begin implementing the JRubyJar task

This is still a work in progress but is enough to at least produce a broken archive :P

Author: R. Tyler Croy

src/main/groovy/com/lookout/jruby/JRubyJar.groovy

@@ -0,0 +1,39 @@
+package com.lookout.jruby
+
+import org.gradle.api.Project
+import org.gradle.api.tasks.bundling.Jar
+
+/**
+  *
+  * @author R. Tyler Croy
+  */
+class JRubyJar extends Jar {
+
+    static final String mainClass = 'com.lookout.jruby.JarMain'
+    static final String JRUBYJAR_CONFIG = 'jrubyJar'
+
+    JRubyJar() {
+        super()
+        group JRubyPlugin.TASK_GROUP_NAME
+        description 'Create a JRuby-based .jar file'
+        dependsOn project.tasks.jrubyPrepare
+
+        // Bring in any compiled classes from our project
+        from "$project.buildDir/classes/main"
+
+        // By adding the JarMain class as the main-class we can have a
+        // runnable jar
+        manifest {
+            attributes 'Main-Class' : mainClass
+        }
+    }
+
+    /** Update dependencies on the project to include those necessary for
+     * building JRubyJar's
+     */
+    static void updateJRubyDependencies(Project project) {
+        project.dependencies {
+            jrubyJar group: 'org.jruby', name: 'jruby-complete', version: project.jruby.defaultVersion
+        }
+    }
+}

src/main/groovy/com/lookout/jruby/JRubyPlugin.groovy

@@ -31,6 +31,7 @@ class JRubyPlugin implements Plugin<Project> {
 
         project.configurations.create(JRubyExec.JRUBYEXEC_CONFIG)
         project.configurations.create(JRubyWar.JRUBYWAR_CONFIG)
+        project.configurations.create(JRubyJar.JRUBYJAR_CONFIG)
         JRubyExecDelegate.addToProject(project)
 
         // In order for jrubyWar to work we'll need to pull in the warbler
@@ -84,6 +85,7 @@ class JRubyPlugin implements Plugin<Project> {
         }
 
         project.task('jrubyWar', type: JRubyWar)
+        project.task('jrubyJar', type: JRubyJar)
     }
 
 }

src/test/groovy/com/lookout/jruby/JRubyJarSpec.groovy

@@ -0,0 +1,33 @@
+package com.lookout.jruby
+
+import org.gradle.testfixtures.ProjectBuilder
+import spock.lang.*
+import static org.gradle.api.logging.LogLevel.*
+
+/**
+ * @author R. Tyler Croy
+ *
+ */
+class JRubyJarSpec extends Specification {
+    static final File TEST_SCRIPT_DIR = new File( System.getProperty('TEST_SCRIPT_DIR') ?: 'src/test/resources/scripts')
+    static final File TESTROOT = new File(System.getProperty('TESTROOT') ?: 'build/tmp/test/unittests')
+    static final String TASK_NAME = 'JarJar'
+
+    def project
+    def jarTask
+
+    void setup() {
+        project = ProjectBuilder.builder().build()
+        project.buildDir = TESTROOT
+        project.logging.level = LIFECYCLE
+        project.apply plugin: 'com.lookout.jruby'
+        jarTask = project.task(TASK_NAME, type: JRubyJar)
+
+    }
+
+    def "basic sanity check"() {
+        expect: "jarTask to be an instance"
+            jarTask instanceof JRubyJar
+            jarTask.group == 'JRuby'
+    }
+}

src/test/groovy/com/lookout/jruby/JRubyPluginTest.groovy

@@ -3,7 +3,7 @@ package com.lookout.jruby
 import org.gradle.api.*
 import org.gradle.api.tasks.*
 import org.gradle.api.artifacts.repositories.*
-import org.gradle.api.tasks.bundling.War
+import org.gradle.api.tasks.bundling.*
 
 import org.gradle.testfixtures.ProjectBuilder
 
@@ -43,6 +43,7 @@ class JRubyPluginTest {
     public void jrubyPluginAddsPrimaryTasks() {
         assertTrue(project.tasks.jrubyPrepare instanceof Task)
         assertTrue(project.tasks.jrubyWar instanceof War)
+        assertTrue(project.tasks.jrubyJar instanceof Jar)
         assertTrue(project.tasks.jrubyClean instanceof Delete)
     }