/*

 * Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * @test

 * @bug 6493690

 * @summary javadoc should have a javax.tools.Tool service provider

 * @modules jdk.javadoc

 * @build APITest

 * @run main GetTask_DocletClassTest

 * @key randomness

 */

import java.io.File;

import java.util.Arrays;

import java.util.Collections;

import java.util.Random;

import javax.tools.DocumentationTool;

import javax.tools.DocumentationTool.DocumentationTask;

import javax.tools.JavaFileObject;

import javax.tools.StandardJavaFileManager;

import javax.tools.ToolProvider;

import com.sun.javadoc.DocErrorReporter;

import com.sun.javadoc.LanguageVersion;

import com.sun.javadoc.RootDoc;

/**

 * Tests for DocumentationTool.getTask  docletClass  parameter.

 */

public class GetTask_DocletClassTest extends APITest {

    public static void main(String... args) throws Exception {

        new GetTask_DocletClassTest().run();

    }

    /**

     * Verify that an alternate doclet can be specified.

     *

     * There is no standard interface or superclass for a doclet;

     * the only requirement is that it provides static methods that

     * can be invoked via reflection. So, for now, the doclet is

     * specified as a class.

     * Because we cannot create and use a unique instance of the class,

     * we verify that the doclet has been called by having it record

     * (in a static field!) the comment from the last time it was invoked,

     * which is randomly generated each time the test is run.

     */

    @Test

    public void testDoclet() throws Exception {

        Random r = new Random();

        int key = r.nextInt();

        JavaFileObject srcFile = createSimpleJavaFileObject(

                "pkg/C",

                "package pkg; /** " + key + "*/ public class C { }");

        DocumentationTool tool = ToolProvider.getSystemDocumentationTool();

        try (StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null)) {

            File outDir = getOutDir();

            fm.setLocation(DocumentationTool.Location.DOCUMENTATION_OUTPUT, Arrays.asList(outDir));

            Iterable<? extends JavaFileObject> files = Arrays.asList(srcFile);

            DocumentationTask t = tool.getTask(null, fm, null, TestDoclet.class, null, files);

            if (t.call()) {

                System.err.println("task succeeded");

                if (TestDoclet.lastCaller.equals(String.valueOf(key)))

                    System.err.println("found expected key: " + key);

                else

                    error("Expected key not found");

                checkFiles(outDir, Collections.<String>emptySet());

            } else {

                throw new Exception("task failed");

            }

        }

    }

    public static class TestDoclet {

        static String lastCaller;

        public static boolean start(RootDoc root) {

            lastCaller = root.classNamed("pkg.C").commentText().trim();

            return true;

        }

        public static int optionLength(String option) {

            return 0;  // default is option unknown

        }

        public static boolean validOptions(String options[][],

                DocErrorReporter reporter) {

            return true;  // default is options are valid

        }

        public static LanguageVersion languageVersion() {

            return LanguageVersion.JAVA_1_1;

        }

    }

    /**

     * Verify that exceptions from a doclet are thrown as expected.

     */

    @Test

    public void testBadDoclet() throws Exception {

        JavaFileObject srcFile = createSimpleJavaFileObject();

        DocumentationTool tool = ToolProvider.getSystemDocumentationTool();

        try (StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null)) {

            File outDir = getOutDir();

            fm.setLocation(DocumentationTool.Location.DOCUMENTATION_OUTPUT, Arrays.asList(outDir));

            Iterable<? extends JavaFileObject> files = Arrays.asList(srcFile);

            DocumentationTask t = tool.getTask(null, fm, null, BadDoclet.class, null, files);

            try {

                t.call();

                error("call completed without exception");

            } catch (RuntimeException e) {

                e.printStackTrace();

                Throwable c = e.getCause();

                if (c.getClass() == UnexpectedError.class)

                    System.err.println("exception caught as expected: " + c);

                else

                    throw e;

            }

        }

    }

    public static class UnexpectedError extends Error { }

    public static class BadDoclet {

        public static boolean start(RootDoc root) {

            throw new UnexpectedError();

        }

        public static int optionLength(String option) {

            return 0;  // default is option unknown

        }

        public static boolean validOptions(String options[][],

                DocErrorReporter reporter) {

            return true;  // default is options are valid

        }

        public static LanguageVersion languageVersion() {

            return LanguageVersion.JAVA_1_1;

        }

    }

}