| /* |
| * 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.beam.runners.dataflow.util; |
| |
| import static org.junit.Assert.assertArrayEquals; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNotEquals; |
| import static org.junit.Assert.assertSame; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.InputStream; |
| import java.util.Arrays; |
| import org.apache.beam.runners.dataflow.util.RandomAccessData.RandomAccessDataCoder; |
| import org.apache.beam.sdk.coders.Coder.Context; |
| import org.apache.beam.sdk.coders.CoderException; |
| import org.apache.beam.sdk.testing.CoderProperties; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.primitives.UnsignedBytes; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.ExpectedException; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for {@link RandomAccessData}. */ |
| @RunWith(JUnit4.class) |
| public class RandomAccessDataTest { |
| private static final byte[] TEST_DATA_A = new byte[] {0x01, 0x02, 0x03}; |
| private static final byte[] TEST_DATA_B = new byte[] {0x06, 0x05, 0x04, 0x03}; |
| private static final byte[] TEST_DATA_C = new byte[] {0x06, 0x05, 0x03, 0x03}; |
| |
| @Rule public ExpectedException expectedException = ExpectedException.none(); |
| |
| @Test |
| public void testCoder() throws Exception { |
| RandomAccessData streamA = new RandomAccessData(); |
| streamA.asOutputStream().write(TEST_DATA_A); |
| RandomAccessData streamB = new RandomAccessData(); |
| streamB.asOutputStream().write(TEST_DATA_A); |
| CoderProperties.coderDecodeEncodeEqual(RandomAccessDataCoder.of(), streamA); |
| CoderProperties.coderDeterministic(RandomAccessDataCoder.of(), streamA, streamB); |
| CoderProperties.coderConsistentWithEquals(RandomAccessDataCoder.of(), streamA, streamB); |
| CoderProperties.coderSerializable(RandomAccessDataCoder.of()); |
| CoderProperties.structuralValueConsistentWithEquals( |
| RandomAccessDataCoder.of(), streamA, streamB); |
| assertTrue(RandomAccessDataCoder.of().isRegisterByteSizeObserverCheap(streamA)); |
| assertEquals(4, RandomAccessDataCoder.of().getEncodedElementByteSize(streamA)); |
| } |
| |
| @Test |
| public void testCoderWithPositiveInfinityIsError() throws Exception { |
| expectedException.expect(CoderException.class); |
| expectedException.expectMessage("Positive infinity can not be encoded"); |
| RandomAccessDataCoder.of() |
| .encode(RandomAccessData.POSITIVE_INFINITY, new ByteArrayOutputStream(), Context.OUTER); |
| } |
| |
| @Test |
| public void testLexicographicalComparator() throws Exception { |
| RandomAccessData streamA = new RandomAccessData(); |
| streamA.asOutputStream().write(TEST_DATA_A); |
| RandomAccessData streamB = new RandomAccessData(); |
| streamB.asOutputStream().write(TEST_DATA_B); |
| RandomAccessData streamC = new RandomAccessData(); |
| streamC.asOutputStream().write(TEST_DATA_C); |
| assertTrue(RandomAccessData.UNSIGNED_LEXICOGRAPHICAL_COMPARATOR.compare(streamA, streamB) < 0); |
| assertTrue(RandomAccessData.UNSIGNED_LEXICOGRAPHICAL_COMPARATOR.compare(streamB, streamA) > 0); |
| assertTrue(RandomAccessData.UNSIGNED_LEXICOGRAPHICAL_COMPARATOR.compare(streamB, streamB) == 0); |
| // Check common prefix length. |
| assertEquals( |
| 2, |
| RandomAccessData.UNSIGNED_LEXICOGRAPHICAL_COMPARATOR.commonPrefixLength(streamB, streamC)); |
| // Check that we honor the start offset. |
| assertTrue( |
| RandomAccessData.UNSIGNED_LEXICOGRAPHICAL_COMPARATOR.compare(streamB, streamC, 3) == 0); |
| // Test positive infinity comparisons. |
| assertTrue( |
| RandomAccessData.UNSIGNED_LEXICOGRAPHICAL_COMPARATOR.compare( |
| streamA, RandomAccessData.POSITIVE_INFINITY) |
| < 0); |
| assertTrue( |
| RandomAccessData.UNSIGNED_LEXICOGRAPHICAL_COMPARATOR.compare( |
| RandomAccessData.POSITIVE_INFINITY, RandomAccessData.POSITIVE_INFINITY) |
| == 0); |
| assertTrue( |
| RandomAccessData.UNSIGNED_LEXICOGRAPHICAL_COMPARATOR.compare( |
| RandomAccessData.POSITIVE_INFINITY, streamA) |
| > 0); |
| } |
| |
| @Test |
| public void testEqualsAndHashCode() throws Exception { |
| // Test that equality by reference works |
| RandomAccessData streamA = new RandomAccessData(); |
| streamA.asOutputStream().write(TEST_DATA_A); |
| assertEquals(streamA, streamA); |
| assertEquals(streamA.hashCode(), streamA.hashCode()); |
| |
| // Test different objects containing the same data are the same |
| RandomAccessData streamACopy = new RandomAccessData(); |
| streamACopy.asOutputStream().write(TEST_DATA_A); |
| assertEquals(streamA, streamACopy); |
| assertEquals(streamA.hashCode(), streamACopy.hashCode()); |
| |
| // Test same length streams with different data differ |
| RandomAccessData streamB = new RandomAccessData(); |
| streamB.asOutputStream().write(new byte[] {0x01, 0x02, 0x04}); |
| assertNotEquals(streamA, streamB); |
| assertNotEquals(streamA.hashCode(), streamB.hashCode()); |
| |
| // Test different length streams differ |
| streamB.asOutputStream().write(TEST_DATA_B); |
| assertNotEquals(streamA, streamB); |
| assertNotEquals(streamA.hashCode(), streamB.hashCode()); |
| } |
| |
| @Test |
| public void testResetTo() throws Exception { |
| RandomAccessData stream = new RandomAccessData(); |
| stream.asOutputStream().write(TEST_DATA_A); |
| stream.resetTo(1); |
| assertEquals(1, stream.size()); |
| stream.asOutputStream().write(TEST_DATA_A); |
| assertArrayEquals( |
| new byte[] {0x01, 0x01, 0x02, 0x03}, Arrays.copyOf(stream.array(), stream.size())); |
| } |
| |
| @Test |
| public void testAsInputStream() throws Exception { |
| RandomAccessData stream = new RandomAccessData(); |
| stream.asOutputStream().write(TEST_DATA_A); |
| InputStream in = stream.asInputStream(1, 1); |
| assertEquals(0x02, in.read()); |
| assertEquals(-1, in.read()); |
| in.close(); |
| } |
| |
| @Test |
| public void testReadFrom() throws Exception { |
| ByteArrayInputStream bais = new ByteArrayInputStream(TEST_DATA_A); |
| RandomAccessData stream = new RandomAccessData(); |
| stream.readFrom(bais, 3, 2); |
| assertArrayEquals( |
| new byte[] {0x00, 0x00, 0x00, 0x01, 0x02}, Arrays.copyOf(stream.array(), stream.size())); |
| bais.close(); |
| } |
| |
| @Test |
| public void testWriteTo() throws Exception { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| RandomAccessData stream = new RandomAccessData(); |
| stream.asOutputStream().write(TEST_DATA_B); |
| stream.writeTo(baos, 1, 2); |
| assertArrayEquals(new byte[] {0x05, 0x04}, baos.toByteArray()); |
| baos.close(); |
| } |
| |
| @Test |
| public void testThatRandomAccessDataGrowsWhenResettingToPositionBeyondEnd() throws Exception { |
| RandomAccessData stream = new RandomAccessData(0); |
| assertArrayEquals(new byte[0], stream.array()); |
| stream.resetTo(3); // force resize |
| assertArrayEquals(new byte[] {0x00, 0x00, 0x00}, stream.array()); |
| } |
| |
| @Test |
| public void testThatRandomAccessDataGrowsWhenReading() throws Exception { |
| RandomAccessData stream = new RandomAccessData(0); |
| assertArrayEquals(new byte[0], stream.array()); |
| stream.readFrom(new ByteArrayInputStream(TEST_DATA_A), 0, TEST_DATA_A.length); |
| assertArrayEquals(TEST_DATA_A, Arrays.copyOf(stream.array(), TEST_DATA_A.length)); |
| } |
| |
| @Test |
| public void testIncrement() throws Exception { |
| assertEquals( |
| new RandomAccessData(new byte[] {0x00, 0x01}), |
| new RandomAccessData(new byte[] {0x00, 0x00}).increment()); |
| assertEquals( |
| new RandomAccessData(new byte[] {0x01, UnsignedBytes.MAX_VALUE}), |
| new RandomAccessData(new byte[] {0x00, UnsignedBytes.MAX_VALUE}).increment()); |
| |
| // Test for positive infinity |
| assertSame(RandomAccessData.POSITIVE_INFINITY, new RandomAccessData(new byte[0]).increment()); |
| assertSame( |
| RandomAccessData.POSITIVE_INFINITY, |
| new RandomAccessData(new byte[] {UnsignedBytes.MAX_VALUE}).increment()); |
| assertSame(RandomAccessData.POSITIVE_INFINITY, RandomAccessData.POSITIVE_INFINITY.increment()); |
| } |
| } |