groovy - Unit tests - run task programically -

i'm creating custom task gradle. i'm new in gradle don't know how can create task use custom task class. possible? want create task functional tests runned on jenkinks.

this custom task:

package pl.gradle  import org.gradle.api.defaulttask import org.gradle.api.tasks.taskaction class mycustomtask extends defaulttask {      public mycustomtask() {         //     }      @taskaction     def build() {         ant.echo(message: "only tests")     }  } 

and test class:

package pl.gradle  import static org.junit.assert.*  import org.gradle.testfixtures.projectbuilder import org.gradle.api.project import org.junit.before; import org.junit.test  class mycustomtasktest {      private project project;     def task      @before     public void setup() {         project = projectbuilder.builder().build()         task = project.task("build", type: mycustomtask)     }      @test     public void taskcreatedproperly() {         asserttrue(task instanceof mycustomtask)     }      @test     public void shouldruntask() { //      task.execute() // how run task? want run build() method mycustomtask class @taskaction     }  } 

projectbuilder meant lower-level tests don't execute tasks. sweet spot testing plugins. in addition you'd write higher-level tests execute real builds (and therefore tasks). you'd typically use gradle tooling api kick off these builds. check out tooling api samples in full gradle distribution.