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/*
 * Copyright 2015 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.gradle.tooling;

import org.gradle.api.Incubating;
import org.gradle.tooling.events.test.TestOperationDescriptor;

/**
 *
 * A {@code TestLauncher} allows you to execute tests in a Gradle build.
 *
 * @since 2.6
 */
@Incubating
public interface TestLauncher extends ConfigurableLauncher {

    /**
     * Adds tests to be executed by passing test descriptors received from a previous Gradle Run.
     *
     * @param descriptors The OperationDescriptor defining one or more tests.
     * @return this
     * @since 2.6
     */
    TestLauncher withTests(TestOperationDescriptor... descriptors);

    /**
     * Adds tests to be executed by passing test descriptors received from a previous Gradle Run.
     *
     * @param descriptors The OperationDescriptor defining one or more tests.
     * @return this
     * @since 2.6
     */
    TestLauncher withTests(Iterable descriptors);

    /**
     * Adds tests to be executed declared by class name.
     *
     * @param testClasses The class names of the tests to be executed.
     * @return this
     * @since 2.6
     */
    TestLauncher withJvmTestClasses(String... testClasses);

    /**
     * Adds tests to be executed declared by class name.
     *
     * @param testClasses The class names of the tests to be executed.
     * @return this
     * @since 2.6
     */
    TestLauncher withJvmTestClasses(Iterable testClasses);

    /**
     * Adds tests to be executed declared by class and method name.
     *
     * @param testClass The name of the class containing the methods to execute.
     * @param methods The names of the test methods to be executed.
     * @return this
     * @since 2.7
     */
    TestLauncher withJvmTestMethods(String testClass, String... methods);

    /**
     * Adds tests to be executed declared by class and methods name.
     *
     * @param testClass The name of the class containing the methods to execute.
     * @param methods The names of the test methods to be executed.
     * @return this
     * @since 2.7
     */
    TestLauncher withJvmTestMethods(String testClass, Iterable methods);

    /**
     * Executes the tests, blocking until complete.
     *
     * @throws TestExecutionException when one or more tests fail, or no tests for execution declared or no matching tests can be found.
     * @throws UnsupportedVersionException When the target Gradle version does not support test execution.
     * @throws org.gradle.tooling.exceptions.UnsupportedBuildArgumentException When there is a problem with build arguments provided by {@link #withArguments(String...)}.
     * @throws org.gradle.tooling.exceptions.UnsupportedOperationConfigurationException
     *          When the target Gradle version does not support some requested configuration option.
     * @throws BuildException On some failure while executing the tests in the Gradle build.
     * @throws BuildCancelledException When the operation was cancelled before it completed successfully.
     * @throws GradleConnectionException On some other failure using the connection.
     * @throws IllegalStateException When the connection has been closed or is closing.
     * @since 2.6
     */
    void run() throws TestExecutionException;

    /**
     * Starts executing the tests. This method returns immediately, and the result is later passed to the given handler.
     *
     * If the operation fails, the handler's {@link ResultHandler#onFailure(GradleConnectionException)}
     * method is called with the appropriate exception. See {@link #run()} for a description of the various exceptions that the operation may fail with.
     *
     * @param handler The handler to supply the result to.
     * @throws IllegalStateException When the connection has been closed or is closing.
     * @since 2.6
     */
    void run(ResultHandler handler);
}