/*
* Copyright (c) 2012, 2016, 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 com.oracle.truffle.api.test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.fail;
import org.junit.Before;
import org.junit.Test;
import com.oracle.truffle.api.RootCallTarget;
import com.oracle.truffle.api.Truffle;
import com.oracle.truffle.api.TruffleRuntime;
import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.api.nodes.RootNode;
import com.oracle.truffle.api.source.SourceSection;
/**
* <h3>Accessing the Truffle Runtime</h3>
*
* <p>
* The Truffle runtime can be accessed at any point in time globally using the static method
* {@link Truffle#getRuntime()}. This method is guaranteed to return a non-null Truffle runtime
* object with an identifying name. A Java Virtual Machine implementation can chose to replace the
* default implementation of the {@link TruffleRuntime} interface with its own implementation for
* providing improved performance.
* </p>
*
* <p>
* The next part of the Truffle API introduction is at
* {@link com.oracle.truffle.api.test.RootNodeTest}.
* </p>
*/
public class TruffleRuntimeTest {
private TruffleRuntime runtime;
@Before
public void before() {
this.runtime = Truffle.getRuntime();
}
private static RootNode createTestRootNode(SourceSection sourceSection) {
return new RootNode(null) {
@Override
public Object execute(VirtualFrame frame) {
return 42;
}
@Override
public SourceSection getSourceSection() {
return sourceSection;
}
};
}
// @Test
public void verifyTheRealRuntimeIsUsedOnRealGraal() {
TruffleRuntime r = Truffle.getRuntime();
final String name = r.getClass().getName();
if (name.endsWith("DefaultTruffleRuntime")) {
fail("Wrong name " + name + " with following System.getProperties:\n" + System.getProperties().toString());
}
}
@Test
public void test() {
assertNotNull(runtime);
assertNotNull(runtime.getName());
}
@Test
public void testCreateCallTarget() {
RootNode rootNode = createTestRootNode(null);
RootCallTarget target = runtime.createCallTarget(rootNode);
assertNotNull(target);
assertEquals(target.call(), 42);
assertSame(rootNode, target.getRootNode());
}
}