/**

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

 *

 * Copyright 2013-2014 Oracle and/or its affiliates. All rights reserved.

 *

 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.

 * Other names may be trademarks of their respective owners.

 *

 * The contents of this file are subject to the terms of either the GNU

 * General Public License Version 2 only ("GPL") or the Common

 * Development and Distribution License("CDDL") (collectively, the

 * "License"). You may not use this file except in compliance with the

 * License. You can obtain a copy of the License at

 * http://www.netbeans.org/cddl-gplv2.html

 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the

 * specific language governing permissions and limitations under the

 * License.  When distributing the software, include this License Header

 * Notice in each file and include the License file at

 * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the GPL Version 2 section of the License file that

 * accompanied this code. If applicable, add the following below the

 * License Header, with the fields enclosed by brackets [] replaced by

 * your own identifying information:

 * "Portions Copyrighted [year] [name of copyright owner]"

 *

 * Contributor(s):

 *

 * The Original Software is NetBeans. The Initial Developer of the Original

 * Software is Oracle. Portions Copyright 2013-2014 Oracle. All Rights Reserved.

 *

 * If you wish your version of this file to be governed by only the CDDL

 * or only the GPL Version 2, indicate your decision by adding

 * "[Contributor] elects to include this software in this distribution

 * under the [CDDL or GPL Version 2] license." If you do not indicate a

 * single choice of license, a recipient has the option to distribute

 * your version of this file under either the CDDL, the GPL Version 2 or

 * to extend the choice of license to its licensees as provided above.

 * However, if you add GPL Version 2 code and therefore, elected the GPL

 * Version 2 license, then the option applies only if the new code is

 * made subject to such option by the copyright holder.

 */

package org.netbeans.html.boot.impl;

import java.io.IOException;

import java.lang.reflect.Field;

import java.lang.reflect.Method;

import static org.testng.Assert.assertEquals;

import static org.testng.Assert.assertTrue;

import org.testng.annotations.Test;

/**

 *

 * @author Jaroslav Tulach <jtulach@netbeans.org>

 */

public class JavaScriptProcesorTest {

    @Test public void detectCallbackToNonExistingClass() throws IOException {

        String code = "package x.y.z;\n"

            + "import net.java.html.js.JavaScriptBody;\n"

            + "class X {\n"

            + "  @JavaScriptBody(args={\"r\"}, javacall=true, body =\n"

            + "    \"r.@java.lang.Runable::run()();\"\n" // typo

            + "  )\n"

            + "  private static native void callback(Runnable r);\n"

            + "}\n";

        Compile c = Compile.create("", code);

        c.assertErrors();

        c.assertError("java.lang.Runable"); // typo

    }

    @Test public void detectCallbackToNonExistingMethod() throws IOException {

        String code = "package x.y.z;\n"

            + "import net.java.html.js.JavaScriptBody;\n"

            + "class X {\n"

            + "  @JavaScriptBody(args={\"r\"}, javacall=true, body =\n"

            + "    \"r.@java.lang.Runnable::cancel()();\"\n"

            + "  )\n"

            + "  private static native void callback(Runnable r);\n"

            + "}\n";

        Compile c = Compile.create("", code);

        c.assertErrors();

        c.assertError("method cancel");

    }

    @Test public void detectCallbackToNonExistingParams() throws IOException {

        String code = "package x.y.z;\n"

            + "import net.java.html.js.JavaScriptBody;\n"

            + "class X {\n"

            + "  @JavaScriptBody(args={\"r\"}, javacall=true, body =\n"

            + "    \"r.@java.lang.Runnable::run(I)(10);\"\n"

            + "  )\n"

            + "  private static native void callback(Runnable r);\n"

            + "}\n";

        Compile c = Compile.create("", code);

        c.assertErrors();

        c.assertError("wrong parameters: (I)");

    }

    @Test public void objectTypeParamsAreOK() throws IOException {

        String code = "package x.y.z;\n"

            + "import net.java.html.js.JavaScriptBody;\n"

            + "class X {\n"

            + "  @JavaScriptBody(args={\"r\"}, javacall=true, body =\n"

            + "    \"r.@java.lang.Object::equals(Ljava/lang/Object;)(null);\"\n"

            + "  )\n"

            + "  private static native void testEqual(Object r);\n"

            + "}\n";

        Compile c = Compile.create("", code);

        c.assertNoErrors();

    }

    @Test public void needJavaScriptBodyToUseResource() throws IOException {

        String code = "package x.y.z;\n"

            + "import net.java.html.js.JavaScriptResource;\n"

            + "@JavaScriptResource(\"x.html\")\n"

            + "class X {\n"

            + "  private static native void callback(Runnable r);\n"

            + "}\n";

        Compile c = Compile.create("", code);

        c.assertErrors();

        c.assertError("needs @JavaScriptBody");

    }

    @Test public void generatesCallbacksThatReturnObject() throws Exception {

        Class<?> callbacksForTestPkg = Class.forName("org.netbeans.html.boot.impl.$JsCallbacks$");

        Method m = callbacksForTestPkg.getDeclaredMethod("java_lang_Runnable$run$", Runnable.class);

        assertEquals(m.getReturnType(), Object.class, "All methods always return object");

    }

    @Test public void hasInstanceField() throws Exception {

        Class<?> callbacksForTestPkg = Class.forName("org.netbeans.html.boot.impl.$JsCallbacks$");

        Field f = callbacksForTestPkg.getDeclaredField("VM");

        f.setAccessible(true);

        assertTrue(callbacksForTestPkg.isInstance(f.get(null)), "Singleton field VM");

    }

}