| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.giraph.block_app.framework.block; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.Iterator; |
| |
| import org.apache.giraph.block_app.framework.piece.AbstractPiece; |
| import org.apache.giraph.block_app.framework.piece.Piece; |
| import org.apache.giraph.function.Supplier; |
| import org.apache.giraph.function.primitive.PrimitiveRefs.IntRef; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import com.google.common.collect.Iterables; |
| |
| /** |
| * Tests repeatUntilBlock's correctness |
| */ |
| public class TestRepeatUntilBlock { |
| |
| public static final int REPEAT_TIMES = 5; |
| |
| private static final Supplier<Boolean> falseSupplier = new Supplier<Boolean>() { |
| @Override |
| public Boolean get() { |
| return false; |
| } |
| }; |
| |
| @Test |
| public void testRepeatUntilBlockBasic() throws Exception { |
| Piece piece1 = new Piece(); |
| Piece piece2 = new Piece(); |
| Block innerBlock = new SequenceBlock(piece1, piece2); |
| Block repeatBlock = new RepeatUntilBlock( |
| REPEAT_TIMES, |
| innerBlock, |
| falseSupplier |
| ); |
| BlockTestingUtils.testIndependence( |
| Iterables.concat(Collections.nCopies(REPEAT_TIMES, Arrays.asList(piece1, piece2))), |
| repeatBlock); |
| Assert.assertEquals(2, innerBlock.getPieceCount().getCount()); |
| Assert.assertFalse(repeatBlock.getPieceCount().isKnown()); |
| } |
| |
| @Test |
| public void testRepeatUntilBlockBasicExit() throws Exception { |
| testRepeatUntilBlockBasicExit(1, 1); |
| testRepeatUntilBlockBasicExit(1, 3); |
| testRepeatUntilBlockBasicExit(3, 1); |
| testRepeatUntilBlockBasicExit(3, 2); |
| testRepeatUntilBlockBasicExit(4, 7); |
| } |
| |
| private void testRepeatUntilBlockBasicExit(int inner, int outer) { |
| final IntRef counter = new IntRef(outer + 1); |
| Supplier<Boolean> countDown = new Supplier<Boolean>() { |
| @Override |
| public Boolean get() { |
| counter.value--; |
| return counter.value == 0; |
| } |
| }; |
| Piece piece = new Piece(); |
| Block repeatBlock = new RepeatUntilBlock( |
| outer + 4, |
| new RepeatBlock(inner, piece), |
| countDown |
| ); |
| BlockTestingUtils.testSequential( |
| Iterables.concat(Collections.<Piece>nCopies(outer * inner, piece)), |
| repeatBlock); |
| } |
| |
| @Test |
| public void testNestedRepeatUntilBlock() throws Exception { |
| Piece piece1 = new Piece(); |
| Piece piece2 = new Piece(); |
| Block innerBlock = new SequenceBlock(piece1, piece2); |
| Block repeatBlock = new RepeatUntilBlock( |
| REPEAT_TIMES, |
| innerBlock, |
| falseSupplier |
| ); |
| BlockTestingUtils.testNestedRepeatBlock( |
| Iterables.concat(Collections.nCopies(REPEAT_TIMES, Arrays.asList(piece1, piece2))), |
| repeatBlock); |
| } |
| |
| @Test |
| public void testRepeatUntilBlockUnlimited() throws Exception { |
| Block innerBlock = new SequenceBlock(new Piece()); |
| // Can't test with testIndependence - spin up our own test inline |
| Supplier<Boolean> countingSupplier = new Supplier<Boolean>() { |
| private int i = 0; |
| |
| @Override |
| public Boolean get() { |
| i++; |
| return i > REPEAT_TIMES; |
| } |
| }; |
| Block repeatBlock = RepeatUntilBlock.unlimited( |
| innerBlock, |
| countingSupplier |
| ); |
| int count = 0; |
| Iterator<AbstractPiece> it = repeatBlock.iterator(); |
| while (it.hasNext()) { |
| it.next(); |
| count++; |
| } |
| assertEquals("Count must be equal to REPEAT_TIMES", REPEAT_TIMES, count); |
| } |
| |
| } |