--- /dev/null 2017-11-16 08:17:56.803999947 +0100 +++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.graph.test/src/org/graalvm/compiler/graph/test/graphio/GraphOutputTest.java 2019-03-12 08:10:32.659942958 +0100 @@ -0,0 +1,284 @@ +/* + * Copyright (c) 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. + * + * 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. + */ + + +package org.graalvm.compiler.graph.test.graphio; + +import static org.junit.Assert.assertArrayEquals; +import static org.junit.Assert.assertFalse; +import static org.junit.Assert.assertTrue; +import static org.junit.Assert.fail; + +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.nio.ByteBuffer; +import java.nio.channels.Channels; +import java.nio.channels.WritableByteChannel; +import java.util.Collection; +import java.util.Collections; +import java.util.Map; +import java.util.Objects; +import org.graalvm.graphio.GraphOutput; +import org.graalvm.graphio.GraphStructure; +import org.junit.Test; + +public final class GraphOutputTest { + + @Test + @SuppressWarnings("static-method") + public void testWritableByteChannel() throws IOException { + ByteArrayOutputStream out = new ByteArrayOutputStream(); + WritableByteChannel channel = Channels.newChannel(out); + ByteBuffer data = generateData(1 << 17); + GraphOutput graphOutput = GraphOutput.newBuilder(new MockGraphStructure()).protocolVersion(6, 0).embedded(true).build(channel); + try (GraphOutput closable = graphOutput) { + assertTrue(closable.isOpen()); + closable.write(data); + } + assertFalse(graphOutput.isOpen()); + assertArrayEquals(data.array(), out.toByteArray()); + } + + @Test + @SuppressWarnings("static-method") + public void testWriteDuringPrint() throws IOException { + ByteArrayOutputStream out = new ByteArrayOutputStream(); + WritableByteChannel channel = Channels.newChannel(out); + class Action implements Runnable { + GraphOutput out; + + @Override + public void run() { + try { + ByteBuffer data = ByteBuffer.allocate(16); + data.limit(16); + out.write(data); + } catch (IOException ioe) { + throw new RuntimeException(ioe); + } + } + } + Action action = new Action(); + try (GraphOutput graphOutput = GraphOutput.newBuilder(new MockGraphStructure(action)).protocolVersion(6, 0).build(channel)) { + action.out = graphOutput; + try { + graphOutput.print(new MockGraph(), Collections.emptyMap(), 0, "Mock Graph"); + fail("Expected IllegalStateException"); + } catch (IllegalStateException ise) { + // expected exception + } + } + } + + @Test + @SuppressWarnings("static-method") + public void testEmbeddedWritableByteChannel() throws IOException { + ByteArrayOutputStream expected = new ByteArrayOutputStream(); + WritableByteChannel expectedChannel = Channels.newChannel(expected); + Map properties = Collections.singletonMap("version.id", 1); + try (GraphOutput graphOutput = GraphOutput.newBuilder(new MockGraphStructure()).protocolVersion(6, 0).build(expectedChannel)) { + graphOutput.print(new MockGraph(), properties, 1, "Graph 1"); + graphOutput.write(ByteBuffer.allocate(0)); + graphOutput.print(new MockGraph(), properties, 2, "Graph 1"); + } + ByteArrayOutputStream embedded = new ByteArrayOutputStream(); + SharedWritableByteChannel embeddChannel = new SharedWritableByteChannel(Channels.newChannel(embedded)); + try { + try (GraphOutput baseOutput = GraphOutput.newBuilder(new MockGraphStructure()).protocolVersion(6, 0).build(embeddChannel)) { + try (GraphOutput embeddedOutput = GraphOutput.newBuilder(new MockGraphStructure()).protocolVersion(6, 0).embedded(true).build((WritableByteChannel) baseOutput)) { + embeddedOutput.print(new MockGraph(), properties, 1, "Graph 1"); + baseOutput.print(new MockGraph(), properties, 2, "Graph 1"); + } + } + } finally { + embeddChannel.realClose(); + } + assertArrayEquals(expected.toByteArray(), embedded.toByteArray()); + } + + private static ByteBuffer generateData(int size) { + ByteBuffer buffer = ByteBuffer.allocate(size); + for (int i = 0; i < size; i++) { + buffer.put(i, (byte) i); + } + buffer.limit(size); + return buffer; + } + + private static final class SharedWritableByteChannel implements WritableByteChannel { + + private final WritableByteChannel delegate; + + SharedWritableByteChannel(WritableByteChannel delegate) { + Objects.requireNonNull(delegate, "Delegate must be non null."); + this.delegate = delegate; + } + + @Override + public int write(ByteBuffer bb) throws IOException { + return delegate.write(bb); + } + + @Override + public boolean isOpen() { + return delegate.isOpen(); + } + + @Override + public void close() throws IOException { + } + + void realClose() throws IOException { + delegate.close(); + } + } + + private static final class MockGraphStructure implements GraphStructure { + + private final Runnable enterAction; + + MockGraphStructure() { + this.enterAction = null; + } + + MockGraphStructure(Runnable enterAction) { + this.enterAction = enterAction; + } + + @Override + public MockGraph graph(MockGraph currentGraph, Object obj) { + onEnter(); + return null; + } + + @Override + public Iterable nodes(MockGraph graph) { + onEnter(); + return Collections.emptySet(); + } + + @Override + public int nodesCount(MockGraph graph) { + onEnter(); + return 0; + } + + @Override + public int nodeId(Void node) { + onEnter(); + return 0; + } + + @Override + public boolean nodeHasPredecessor(Void node) { + onEnter(); + return false; + } + + @Override + public void nodeProperties(MockGraph graph, Void node, Map properties) { + onEnter(); + } + + @Override + public Void node(Object obj) { + onEnter(); + return null; + } + + @Override + public Void nodeClass(Object obj) { + onEnter(); + return null; + } + + @Override + public Void classForNode(Void node) { + onEnter(); + return null; + } + + @Override + public String nameTemplate(Void nodeClass) { + onEnter(); + return null; + } + + @Override + public Object nodeClassType(Void nodeClass) { + onEnter(); + return null; + } + + @Override + public Void portInputs(Void nodeClass) { + onEnter(); + return null; + } + + @Override + public Void portOutputs(Void nodeClass) { + onEnter(); + return null; + } + + @Override + public int portSize(Void port) { + onEnter(); + return 0; + } + + @Override + public boolean edgeDirect(Void port, int index) { + onEnter(); + return false; + } + + @Override + public String edgeName(Void port, int index) { + onEnter(); + return null; + } + + @Override + public Object edgeType(Void port, int index) { + onEnter(); + return null; + } + + @Override + public Collection edgeNodes(MockGraph graph, Void node, Void port, int index) { + onEnter(); + return null; + } + + private void onEnter() { + if (enterAction != null) { + enterAction.run(); + } + } + } + + private static final class MockGraph { + } +}