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 *

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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

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 *

 * 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,

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package org.graalvm.compiler.hotspot.test;

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

import java.security.NoSuchProviderException;

import org.junit.Test;

import org.junit.internal.AssumptionViolatedException;

import org.graalvm.compiler.api.test.Graal;

import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig;

import org.graalvm.compiler.hotspot.HotSpotGraalRuntimeProvider;

import org.graalvm.compiler.runtime.RuntimeProvider;

import jdk.vm.ci.code.InstalledCode;

import jdk.vm.ci.meta.ResolvedJavaMethod;

/**

 * Exercise the execution of the SHA digest substitutions.

 */

public class TestSHASubstitutions extends HotSpotGraalCompilerTest {

    public byte[] testDigest(String name, byte[] data) throws NoSuchAlgorithmException {

        MessageDigest digest;

        try {

            digest = MessageDigest.getInstance(name, "SUN");

            digest.update(data);

            return digest.digest();

        } catch (NoSuchProviderException e) {

            return null;

        }

    }

    byte[] getData() {

        byte[] data = new byte[1024 * 16];

        for (int i = 0; i < data.length; i++) {

            data[i] = (byte) i;

        }

        return data;

    }

    GraalHotSpotVMConfig getConfig() {

        HotSpotGraalRuntimeProvider rt = (HotSpotGraalRuntimeProvider) Graal.getRequiredCapability(RuntimeProvider.class);

        return rt.getVMConfig();

    }

    @Test

    public void testSha1() {

        if (getConfig().useSHA1Intrinsics()) {

        }

    }

    void testWithInstalledIntrinsic(String className, String methodName, String testSnippetName, Object... args) {

        Class<?> c;

        try {

            c = Class.forName(className);

        } catch (ClassNotFoundException e) {

            // It's ok to not find the class - a different security provider

            // may have been installed

            return;

        }

        InstalledCode code = null;

        try {

            ResolvedJavaMethod method = getResolvedJavaMethod(testSnippetName);

            Object receiver = method.isStatic() ? null : this;

            Result expect = executeExpected(method, receiver, args);

            code = compileAndInstallSubstitution(c, methodName);

            assertTrue("Failed to install " + methodName, code != null);

            testAgainstExpected(method, expect, receiver, args);

        } catch (AssumptionViolatedException e) {

            // Suppress so that subsequent calls to this method within the

            // same Junit @Test annotated method can proceed.

        }

        if (code != null) {

            code.invalidate();

        }

    }

    @Test

    public void testSha256() {

        if (getConfig().useSHA256Intrinsics()) {

        }

    }

    @Test

    public void testSha512() {

        if (getConfig().useSHA512Intrinsics()) {

        }

    }

}