Make sure we can apply the plugin

src/main/kotlin/nebula/plugin/bintray/BintrayExtension.kt

@@ -1,6 +1,7 @@
 package nebula.plugin.bintray
 
 import org.gradle.api.model.ObjectFactory
+import org.gradle.api.provider.ListProperty
 import org.gradle.api.provider.Property
 import org.gradle.kotlin.dsl.property
 
@@ -13,9 +14,9 @@ open class BintrayExtension(objects: ObjectFactory) {
     val userOrg: Property<String> = objects.property()
     val autoPublish: Property<Boolean> = objects.property()
     val autoPublishWaitForSeconds: Property<Int> = objects.property()
-    val licenses: Property<List<String>> = objects.property()
-    val customLicenses: Property<List<String>> = objects.property()
-    val labels: Property<List<String>> = objects.property()
+    val licenses: ListProperty<String> = objects.listProperty(String::class.java)
+    val customLicenses: ListProperty<String> = objects.listProperty(String::class.java)
+    val labels: ListProperty<String> = objects.listProperty(String::class.java)
     val websiteUrl: Property<String> =objects.property()
     val issueTrackerUrl: Property<String> = objects.property()
     val vcsUrl: Property<String> = objects.property()

src/main/kotlin/nebula/plugin/bintray/NebulaBintrayPackageTask.kt

@@ -1,6 +1,6 @@
 package nebula.plugin.bintray
 
-import org.gradle.api.GradleException
+import org.gradle.api.provider.ListProperty
 import org.gradle.api.provider.Property
 import org.gradle.api.tasks.Input
 import org.gradle.api.tasks.Optional
@@ -14,13 +14,13 @@ open class NebulaBintrayPackageTask : NebulaBintrayAbstractTask() {
     val desc: Property<String> = project.objects.property()
     @Input
     @Optional
-    val licenses: Property<List<String>> = project.objects.property()
+    val licenses: ListProperty<String> = project.objects.listProperty(String::class.java)
     @Input
     @Optional
-    val customLicenses: Property<List<String>> = project.objects.property()
+    val customLicenses: ListProperty<String> = project.objects.listProperty(String::class.java)
     @Input
     @Optional
-    val labels: Property<List<String>> = project.objects.property()
+    val labels:ListProperty<String> = project.objects.listProperty(String::class.java)
     @Input
     @Optional
     val websiteUrl: Property<String> = project.objects.property()

src/test/groovy/nebula/plugin/bintray/LauncherSpec.groovy

@@ -0,0 +1,24 @@
+package nebula.plugin.bintray
+
+import nebula.test.IntegrationSpec
+import spock.lang.Ignore
+
+class LauncherSpec extends IntegrationSpec {
+    @Ignore
+    File createSubProject(String name, String buildFile = null) {
+        settingsFile << "\ninclude '${name}'"
+
+        def sub = new File(projectDir, name)
+        sub.mkdirs()
+
+        if (buildFile) {
+            new File(sub, 'build.gradle') << buildFile
+        }
+
+        return sub
+    }
+
+    void writeHelloWorld(String dottedPackage = 'netflix.hello') {
+        writeHelloWorld(dottedPackage, getProjectDir())
+    }
+}

src/test/groovy/nebula/plugin/bintray/NebulaBintrayPublishingPluginIntegrationSpec.groovy

@@ -15,11 +15,33 @@
  */
 package nebula.plugin.bintray
 
-import nebula.test.IntegrationSpec
 
-class NebulaBintrayPublishingPluginIntegrationSpec extends IntegrationSpec {
+class NebulaBintrayPublishingPluginIntegrationSpec extends LauncherSpec {
 
     def 'apply plugin'() {
+        given:
+        buildFile << """ 
+            apply plugin: 'nebula.nebula-bintray'
+            apply plugin: 'java'
+                
+            group = 'test.nebula.netflix'
+            version = '1.0'
+            
+            bintray {
+                user = 'nebula-plugins'
+                apiKey = 'mykey'
+                apiUrl = 'https://api.bintray.com'
+                pkgName = 'my-plugin'
+            }
+            
+        """
 
+        writeHelloWorld()
+
+        when:
+        def result = runTasks('publishPackageToBintray')
+
+        then:
+        result.standardOutput.contains('Task :publishPackageToBintray')
     }
 }