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 * Copyright (c) 2011, 2019, 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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package org.graalvm.compiler.core.test;

import org.graalvm.compiler.debug.DebugContext;

import org.graalvm.compiler.nodes.StructuredGraph;

import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions;

import org.junit.Test;

public class StraighteningTest extends GraalCompilerTest {

    private static final String REFERENCE_SNIPPET = "ref";

    public static boolean ref(int a, int b) {

        return a == b;

    }

    public static boolean test1Snippet(int a, int b) {

        int c = a;

        if (c == b) {

            c = 0x55;

        }

        if (c != 0x55) {

            return false;

        }

        return true;

    }

    public static boolean test3Snippet(int a, int b) {

        int val = (int) System.currentTimeMillis();

        int c = val + 1;

        if (a == b) {

            c = val;

        }

        if (c != val) {

            return false;

        }

        return true;

    }

    public static boolean test2Snippet(int a, int b) {

        int c;

        if (a == b) {

            c = 1;

        } else {

            c = 0;

        }

        return c == 1;

    }

    @Test(expected = AssertionError.class)

    public void test1() {

        test("test1Snippet");

    }

    public void test2() {

        test("test2Snippet");

    }

    @Test(expected = AssertionError.class)

    public void test3() {

        test("test3Snippet");

    }

    private void test(final String snippet) {

        // No debug scope to reduce console noise for @Test(expected = ...) tests

        StructuredGraph graph = parseEager(snippet, AllowAssumptions.YES);

        DebugContext debug = graph.getDebug();

        debug.dump(DebugContext.BASIC_LEVEL, graph, "Graph");

        StructuredGraph referenceGraph = parseEager(REFERENCE_SNIPPET, AllowAssumptions.YES);

        assertEquals(referenceGraph, graph);

    }

}