failureHasCause("Cannot create task ':thing' of type 'AbstractTask' as this type is not supported for task registration.")
    }

    def "creating a task of type TaskInternal is not supported"() {
        buildFile << """
            task thing(type: ${TaskInternal.name}) { t ->
                assert t instanceof DefaultTask
                doFirst { println("thing") }
            }
        """

        expect:

 * limitations under the License.
 */
package org.gradle.composite.internal;

import com.google.common.annotations.VisibleForTesting;
import org.gradle.api.Task;
import org.gradle.api.internal.TaskInternal;
import org.gradle.api.specs.Spec;
import org.gradle.execution.EntryTaskSelector;
import org.gradle.execution.plan.PlanExecutor;
import org.gradle.execution.plan.QueryableExecutionPlan;

import com.google.common.collect.Iterables;
import com.google.common.collect.Sets;
import org.gradle.api.CircularReferenceException;
import org.gradle.api.GradleException;
import org.gradle.api.internal.TaskInternal;
import org.gradle.api.internal.project.ProjectInternal;
import org.gradle.api.internal.tasks.TaskDestroyablesInternal;
import org.gradle.api.internal.tasks.TaskLocalStateInternal;

 * limitations under the License.
 */

package org.gradle.execution.plan;

import org.gradle.api.file.FileTreeElement;
import org.gradle.api.internal.TaskInternal;
import org.gradle.api.internal.file.FileCollectionInternal;
import org.gradle.api.internal.file.FileCollectionStructureVisitor;
import org.gradle.api.internal.file.FileTreeInternal;

 * limitations under the License.
 */

package org.gradle.plugins.ear

import org.gradle.api.Action
import org.gradle.api.Task
import org.gradle.api.artifacts.Dependency
import org.gradle.api.internal.TaskInternal
import org.gradle.api.internal.tasks.JvmConstants
import org.gradle.api.plugins.BasePlugin
import org.gradle.api.plugins.JavaBasePlugin
import org.gradle.api.plugins.JavaPlugin
import org.gradle.api.plugins.WarPlugin

import org.gradle.api.Action
import org.gradle.api.Task
import org.gradle.api.file.FileCollection
import org.gradle.api.file.FileTree
import org.gradle.api.file.FileVisitorUtil
import org.gradle.api.internal.TaskInternal
import org.gradle.api.internal.tasks.TaskDependencyContainerInternal
import org.gradle.api.internal.tasks.TaskDependencyInternal
import org.gradle.api.internal.tasks.TaskDependencyResolveContext

import org.gradle.api.Incubating;
import org.gradle.api.Plugin;
import org.gradle.api.Project;
import org.gradle.api.Task;
import org.gradle.api.internal.CollectionCallbackActionDecorator;
import org.gradle.api.internal.TaskInternal;
import org.gradle.api.internal.project.ProjectIdentifier;
import org.gradle.api.internal.tasks.TaskContainerInternal;
import org.gradle.api.internal.tasks.TaskDependencyUtil;
import org.gradle.api.plugins.ExtensionContainer;

            throw new InvalidUserDataException("The task name must be provided.");
        }

        final Class<? extends TaskInternal> type = Objects.requireNonNull(Cast.uncheckedCast(actualArgs.get(Task.TASK_TYPE)), "Task type must not be null");

        final TaskIdentity<? extends TaskInternal> identity = taskIdentityFactory.create(name, type, project);
        return buildOperationRunner.call(new CallableBuildOperation<Task>() {

import org.gradle.api.DefaultTask
import org.gradle.api.Named
import org.gradle.api.file.ConfigurableFileCollection
import org.gradle.api.file.FileCollection
import org.gradle.api.internal.TaskInternal
import org.gradle.api.internal.file.TestFiles
import org.gradle.api.internal.tasks.properties.bean.TestImplementationResolver
import org.gradle.api.provider.Property
import org.gradle.api.tasks.Destroys

        Task task = AbstractTask.injectIntoNewInstance(project, identity, { TestUtil.newInstance(DefaultTask) } as Callable)

        expect:
        task.dependsOn.isEmpty()
        task.actions == []
        (task as TaskInternal).taskIdentity == identity
    }

    def "useful toString()"() {
        expect:
        'task \':testTask\'' == task.toString()
    }

    def "can inject values into task when using no-args constructor"() {