/*

 * Copyright (c) 2017, 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.

 *

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 */

/**

 * @test

 * @modules java.base/jdk.internal.module

 * @run testng ClassFileVersionsTest

 * @summary Test parsing of module-info.class with different class file versions

 */

import java.lang.module.InvalidModuleDescriptorException;

import java.lang.module.ModuleDescriptor;

import java.lang.module.ModuleDescriptor.Requires.Modifier;

import java.nio.ByteBuffer;

import java.util.Set;

import static java.lang.module.ModuleDescriptor.Requires.Modifier.*;

import jdk.internal.module.ModuleInfoWriter;

import org.testng.annotations.DataProvider;

import org.testng.annotations.Test;

import static org.testng.Assert.*;

public class ClassFileVersionsTest {

    // major, minor, modifiers for requires java.base

    @DataProvider(name = "supported")

    public Object[][] supported() {

        return new Object[][]{

                { 53,   0,  Set.of() },                      // JDK 9

                { 53,   0,  Set.of(STATIC) },

                { 53,   0,  Set.of(TRANSITIVE) },

                { 53,   0,  Set.of(STATIC, TRANSITIVE) },

                { 54,   0,  Set.of() },                      // JDK 10

        };

    }

    // major, minor, modifiers for requires java.base

    @DataProvider(name = "unsupported")

    public Object[][] unsupported() {

        return new Object[][]{

                { 50,   0,  Set.of()},                       // JDK 6

                { 51,   0,  Set.of()},                       // JDK 7

                { 52,   0,  Set.of()},                       // JDK 8

                { 54,   0,  Set.of(STATIC) },                // JDK 10

                { 54,   0,  Set.of(TRANSITIVE) },

                { 54,   0,  Set.of(STATIC, TRANSITIVE) },

                { 55,   0,  Set.of()},                       // JDK 11

        };

    }

    @Test(dataProvider = "supported")

    public void testSupported(int major, int minor, Set<Modifier> ms) {

        ModuleDescriptor descriptor = ModuleDescriptor.newModule("foo")

                .requires(ms, "java.base")

                .build();

        ByteBuffer bb = ModuleInfoWriter.toByteBuffer(descriptor);

        classFileVersion(bb, major, minor);

        descriptor = ModuleDescriptor.read(bb);

        assertEquals(descriptor.name(), "foo");

    }

    @Test(dataProvider = "unsupported",

          expectedExceptions = InvalidModuleDescriptorException.class)

    public void testUnsupported(int major, int minor, Set<Modifier> ms) {

        ModuleDescriptor descriptor = ModuleDescriptor.newModule("foo")

                .requires(ms, "java.base")

                .build();

        ByteBuffer bb = ModuleInfoWriter.toByteBuffer(descriptor);

        classFileVersion(bb, major, minor);

        // throws InvalidModuleDescriptorException

        ModuleDescriptor.read(bb);

    }

    private void classFileVersion(ByteBuffer bb, int major, int minor) {

        bb.putShort(4, (short) minor);

        bb.putShort(6, (short) major);

    }

}