/*

 * 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

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 */

/*

 * @test

 * @bug 8136421

 * @requires vm.jvmci

 * @library / /test/lib

 * @library ../common/patches

 * @modules jdk.internal.vm.ci/jdk.vm.ci.hotspot

 * @build jdk.internal.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper

 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI

 *                   -Djvmci.Compiler=null

 *                   compiler.jvmci.compilerToVM.LookupTypeTest

 */

package compiler.jvmci.compilerToVM;

import compiler.jvmci.common.testcases.DoNotExtendClass;

import compiler.jvmci.common.testcases.MultiSubclassedClass;

import compiler.jvmci.common.testcases.SingleSubclass;

import jdk.test.lib.Asserts;

import jdk.test.lib.Utils;

import jdk.vm.ci.hotspot.CompilerToVMHelper;

import jdk.vm.ci.hotspot.HotSpotResolvedObjectType;

import java.util.HashSet;

import java.util.Set;

public class LookupTypeTest {

    public static void main(String args[]) {

        LookupTypeTest test = new LookupTypeTest();

        for (TestCase tcase : createTestCases()) {

            test.runTest(tcase);

        }

    }

    private static Set<TestCase> createTestCases() {

        Set<TestCase> result = new HashSet<>();

        // a primitive class

        result.add(new TestCase(Utils.toJVMTypeSignature(int.class),

                LookupTypeTest.class, true, false, InternalError.class));

        // lookup not existing class

        result.add(new TestCase("Lsome_not_existing;", LookupTypeTest.class,

                true, false, ClassNotFoundException.class));

        // lookup invalid classname

        result.add(new TestCase("L!@#$%^&**()[]{}?;", LookupTypeTest.class,

                true, false, ClassNotFoundException.class));

        // lookup package private class

        result.add(new TestCase(

                "Lcompiler/jvmci/compilerToVM/testcases/PackagePrivateClass;",

                LookupTypeTest.class, true, false,

                ClassNotFoundException.class));

        // lookup usual class with resolve=true

        result.add(new TestCase(Utils.toJVMTypeSignature(SingleSubclass.class),

                LookupTypeTest.class, true, true));

        // lookup usual class with resolve=false

        result.add(new TestCase(

                Utils.toJVMTypeSignature(DoNotExtendClass.class),

                LookupTypeTest.class, false, true));

        // lookup usual class with null accessor

        result.add(new TestCase(

                Utils.toJVMTypeSignature(MultiSubclassedClass.class), null,

                false, false, NullPointerException.class));

        return result;

    }

    private void runTest(TestCase tcase) {

        System.out.println(tcase);

        HotSpotResolvedObjectType metaspaceKlass;

        try {

            metaspaceKlass = CompilerToVMHelper.lookupType(tcase.className,

                    tcase.accessing, tcase.resolve);

        } catch (Throwable t) {

            Asserts.assertNotNull(tcase.expectedException,

                    "Assumed no exception, but got " + t);

            Asserts.assertFalse(tcase.isPositive,

                    "Got unexpected exception " + t);

            Asserts.assertEQ(t.getClass(), tcase.expectedException,

                    "Unexpected exception");

            // passed

            return;

        }

        if (tcase.expectedException != null) {

            throw new AssertionError("Expected exception was not thrown: "

                    + tcase.expectedException.getName());

        }

        if (tcase.isPositive) {

            Asserts.assertNotNull(metaspaceKlass,

                    "Unexpected null metaspace klass");

            Asserts.assertEQ(metaspaceKlass.getName(), tcase.className,

                    "Got unexpected resolved class name");

        } else {

            Asserts.assertNull(metaspaceKlass, "Unexpected metaspace klass");

        }

    }

    private static class TestCase {

        public final String className;

        public final Class<?> accessing;

        public final boolean resolve;

        public final boolean isPositive;

        public final Class<? extends Throwable> expectedException;

        public TestCase(String className, Class<?> accessing, boolean resolve,

                boolean isPositive,

                Class<? extends Throwable> expectedException) {

            this.className = className;

            this.accessing = accessing;

            this.resolve = resolve;

            this.isPositive = isPositive;

            this.expectedException = expectedException;

        }

        public TestCase(String className, Class<?> accessing, boolean resolve,

                boolean isPositive) {

            this.className = className;

            this.accessing = accessing;

            this.resolve = resolve;

            this.isPositive = isPositive;

            this.expectedException = null;

        }

        @Override

        public String toString() {

            return String.format("CASE: class=%s, accessing=%s,"

                + " resolve=%s, positive=%s, expectedException=%s", className,

                accessing, resolve, isPositive, expectedException);

        }

    }

}