/*

 * Copyright (c) 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 MethodMatcherTest

 * @run main ClassFileInstaller sun.hotspot.WhiteBox

 *                              sun.hotspot.WhiteBox$WhiteBoxPermission

 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI MethodMatcherTest

 * @summary Testing of compiler/MethodMatcher

 * @bug 8135068

 */

import java.lang.reflect.Method;

import java.util.ArrayList;

import sun.hotspot.WhiteBox;

public class MethodMatcherTest {

    /** Instance of WhiteBox */

    protected static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();

    Method helper;

    Method getDate;

    Method inner;

    Method toString;

    static final int MATCH = 1;

    static final int NO_MATCH = 0;

    static final int PARSING_FAILURE = -1;

    public MethodMatcherTest() {

    }

    public void test() throws Exception {

        // instantiate before calling getMethod on innerHelper

        TestCases testCases = new TestCases();

        helper = getMethod(MethodMatcherTest.class, "helper");

        getDate = getMethod(java.util.Date.class, "getDate");

        inner = getMethod(TestCases.class, "innerHelper");

        toString = getMethod(String.class, "toString");

        testCases.add(helper, "pool/sub/Klass.method(I[Ljava/lang/String;Ljava/lang/Integer;[B[[D)V", NO_MATCH);

        // These should be improved to parsing failed in the future

        testCases.add(helper, "*Klass*,*$method*::", NO_MATCH);

        testCases.add(helper, "*Klass *+*", NO_MATCH);

        testCases.add(helper, "*Klass*::*method*", NO_MATCH);

        testCases.add(helper, "*,**", PARSING_FAILURE);

        testCases.add(helper, "*,*(I[Ljava/lang/String;Lj]ava/lang/Integer;[B[[D)V", PARSING_FAILURE);

        testCases.add(helper, "*,*)method*.", PARSING_FAILURE);

        testCases.add(helper, "{pool.subpack.Klass}* *", PARSING_FAILURE);

        testCases.add(helper, "*Klass met]hod/", PARSING_FAILURE);

        testCases.add(helper, "pool::su@%b::Klass* *)method.", PARSING_FAILURE);

        testCases.add(helper, "0pool/sub/Klass,*{method}*.(I[Ljava/lang/String;Lj]ava/lang/Integer;[B[[D)V", PARSING_FAILURE);

        testCases.add(helper, "*Klass nonexistent::)(I[Ljava/lang/String;Ljava/lang/Integer;[B[[D)V", PARSING_FAILURE);

        testCases.add(helper, "pool,su]b,Klass*,*)method*/", PARSING_FAILURE);

        testCases.add(helper, "_pool,sub,Klass*,met@%hod,(0)V", PARSING_FAILURE);

        testCases.add(helper, "*.*", MATCH);

        testCases.add(helper, "MethodMatcherTest.*", MATCH);

        testCases.add(helper, "MethodMatcherTest.helper", MATCH);

        testCases.add(helper, "MethodMatcherTest.helper()", MATCH);

        testCases.add(helper, "MethodMatcherTest.helper()V", MATCH);

        testCases.add(helper, "MethodMatcherTest.helper()V;", NO_MATCH);

        testCases.add(helper, "MethodMatcherTest.helper()I", NO_MATCH);

        testCases.add(helper, "MethodMatcherTest.helperX", NO_MATCH);

        testCases.add(helper, "MethodMatcherTestX.helper;", NO_MATCH);

        testCases.add(helper, "abc.*", NO_MATCH);

        testCases.add(helper, "*.abc", NO_MATCH);

        testCases.add(getDate, "*.*", MATCH);

        testCases.add(getDate, "*.getDate", MATCH);

        testCases.add(getDate, "java/util/Date.getDate", MATCH);

        testCases.add(getDate, "java/util/Date.*", MATCH);

        testCases.add(inner, "*.*", MATCH);

        testCases.add(inner, "MethodMatcherTest$TestCases.innerHelper", MATCH);

        testCases.add(inner, "MethodMatcherTest*.innerHelper", MATCH);

        testCases.add(inner, "MethodMatcherTest$*.innerHelper", MATCH);

        testCases.add(inner, "*$TestCases.innerHelper", MATCH);

        testCases.add(inner, "*TestCases.innerHelper", MATCH);

        testCases.add(inner, "TestCases.innerHelper", NO_MATCH);

        testCases.add(inner, "MethodMatcherTest.innerHelper", NO_MATCH);

        testCases.add(toString, "*.*", MATCH);

        testCases.add(toString, "java/lang/String.toString", MATCH);

        testCases.add(toString, "java.lang.String::toString", MATCH);

        testCases.add(toString, "java/lang/String::toString", PARSING_FAILURE);

        testCases.add(toString, "java.lang/String::toString", PARSING_FAILURE);

        testCases.add(toString, "java.lang/String.toString", PARSING_FAILURE);

        testCases.add(toString, "java::lang::String::toString", PARSING_FAILURE);

        testCases.add(toString, "java/lang/String.toString(*)", PARSING_FAILURE);

        testCases.add(toString, "java/lang/String.toString(L*", PARSING_FAILURE);

        testCases.add(toString, "java/lang/String.toString*(lsd)l", NO_MATCH);

        testCases.add(toString, "java/lang/String.toString(lsd)l", NO_MATCH);

        testCases.add(toString, "java/lang/String.toString (", MATCH);

        testCases.add(toString, "java/lang/String.toString ()", MATCH);

        testCases.add(toString, "java/lang/String.toString ()L", MATCH);

        testCases.add(toString, "java/lang/String.toString ()Lj", MATCH);

        testCases.add(toString, "java/lang/String.toString ()Ls", NO_MATCH);

        testCases.add(toString, "java/lang/String.toString*(", MATCH);

        testCases.add(toString, "java/lang/String.toString* (", MATCH);

        testCases.add(toString, "java/lang/String.toString*(;", NO_MATCH);

        testCases.add(toString, "java/lang/String.toString*();sf", NO_MATCH);

        testCases.add(toString, "java/lang/String.toString*()Ljava/lang/String;", MATCH);

        testCases.add(toString, "java/lang/String.toString()Ljava/lang/String;", MATCH);

        testCases.add(toString, "java/lang/String.toString ()Ljava/lang/String;", MATCH);

        testCases.add(toString, "java/lang/String.toString ()Ljava/lang/String", MATCH);

        testCases.add(toString, "java/lang/String.toString ()L", MATCH);

        testCases.add(toString, "java/lang/String.toString ()I;", NO_MATCH);

        testCases.add(toString, "*Internal.*", NO_MATCH);

        testCases.add(toString, "*Internal.**", PARSING_FAILURE);

        testCases.add(toString, "*Internal.***", PARSING_FAILURE);

        testCases.add(toString, "*Internal.*a**", PARSING_FAILURE);

        testCases.add(toString, "*Internal.**a*", PARSING_FAILURE);

        testCases.add(toString, "java.lang.String::<init>(Ljava/lang/String;)V", NO_MATCH);

        testCases.add(toString, "java.lang.String::<clinit>(Ljava/lang/String;)V", NO_MATCH);

        testCases.add(toString, "java.lang.String::<init(Ljava/lang/String;)V", PARSING_FAILURE);

        testCases.add(toString, "java.lang.String::init>(Ljava/lang/String;)V", PARSING_FAILURE);

        testCases.add(toString, "java/lang/String.toString()Ljava/lang/String;", MATCH);

        testCases.add(toString, "java/lang/Str<ing.toString()Ljava/lang/String;", PARSING_FAILURE);

        testCases.add(toString, "java/lang/Str>ing.toString()Ljava/lang/String;", PARSING_FAILURE);

        testCases.add(toString, "java/lang/<init>.toString()Ljava/lang/String;", PARSING_FAILURE);

        testCases.add(toString, "java/lang/<clinit>.toString()Ljava/lang/String;", PARSING_FAILURE);

        int failures = 0;

        for (TestCase t : testCases) {

            System.out.println("Test case: " + t.pattern);

            if (!t.test()) {

                failures++;

                System.out.println(" * FAILED");

            }

        }

        if (failures != 0) {

            throw new Exception("There where " + failures + " failures in this test");

        }

    }

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

        MethodMatcherTest test = new MethodMatcherTest();

        test.test();

    }

    public void helper() {

    }

    private static Method getMethod(Class klass, String name, Class<?>... parameterTypes) {

        try {

            return klass.getDeclaredMethod(name, parameterTypes);

        } catch (NoSuchMethodException | SecurityException e) {

            throw new RuntimeException("exception on getting method Helper." + name, e);

        }

    }

    class TestCase {

        String pattern;

        Method testTarget;

        int expectedResult;

        public TestCase(Method testTarget, String pattern, int expectedResult) {

            this.testTarget = testTarget;

            this.pattern = pattern;

            this.expectedResult = expectedResult;

        }

        public String resultAsStr(int errorCode) {

            switch (errorCode) {

            case PARSING_FAILURE:

                return "Parsing failed";

            case NO_MATCH:

                return "No match";

            case MATCH:

                return "Match";

            default:

                return "Unknown error";

            }

        }

        boolean test() {

            int result = WHITE_BOX.matchesMethod(testTarget, pattern);

            if (result != expectedResult) {

                System.out

                        .println("FAIL Wrong result, Got: " + resultAsStr(result) + "\n TestCase: " + this.toString());

                return false;

            }

            return true;

        }

        @Override

        public String toString() {

            return "Method: '" + testTarget.toString() + "' Pattern: '" + pattern + "' Expected: "

                    + resultAsStr(expectedResult);

        }

        public void innerHelper() {

        }

    }

    class TestCases extends ArrayList<TestCase> {

        private static final long serialVersionUID = 1L;

        public boolean add(Method testTarget, String pattern, int expectedResult) {

            return super.add(new TestCase(testTarget, pattern, expectedResult));

        }

        public void innerHelper() {

        }

    }

}