wombatu-kun commented on code in PR #19204: URL: https://github.com/apache/hudi/pull/19204#discussion_r3555992245
########## hudi-common/src/test/java/org/apache/hudi/common/bloom/TestKey.java: ########## @@ -0,0 +1,144 @@ +/* + * 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.hudi.common.bloom; + +import org.junit.jupiter.api.Test; + +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.DataInputStream; +import java.io.DataOutputStream; +import java.io.IOException; + +import static org.junit.jupiter.api.Assertions.assertArrayEquals; +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertFalse; +import static org.junit.jupiter.api.Assertions.assertThrows; +import static org.junit.jupiter.api.Assertions.assertTrue; + +/** + * Tests {@link Key}. + */ +public class TestKey { + + @Test + public void testDefaultWeightIsOne() { + Key key = new Key("abc".getBytes()); + assertEquals(1.0, key.getWeight()); + } + + @Test + public void testConstructorWithExplicitWeight() { + Key key = new Key("abc".getBytes(), 2.5); + assertEquals(2.5, key.getWeight()); + assertArrayEquals("abc".getBytes(), key.getBytes()); + } + + @Test + public void testSetWithNullValueThrows() { + Key key = new Key(); + assertThrows(IllegalArgumentException.class, () -> key.set(null, 1.0)); + } + + @Test + public void testIncrementWeightByAmount() { + Key key = new Key("abc".getBytes(), 1.0); + key.incrementWeight(2.0); + assertEquals(3.0, key.getWeight()); + } + + @Test + public void testIncrementWeightByOne() { + Key key = new Key("abc".getBytes(), 1.0); + key.incrementWeight(); + assertEquals(2.0, key.getWeight()); + } + + @Test + public void testEqualsAndHashCodeForIdenticalKeys() { + Key key1 = new Key("abc".getBytes(), 1.0); + Key key2 = new Key("abc".getBytes(), 1.0); + assertTrue(key1.equals(key2)); + assertEquals(key1.hashCode(), key2.hashCode()); + } + + @Test + public void testEqualsIsFalseForDifferentBytes() { + Key key1 = new Key("abc".getBytes(), 1.0); + Key key2 = new Key("xyz".getBytes(), 1.0); + assertFalse(key1.equals(key2)); + } + + @Test + public void testEqualsIsFalseForDifferentWeight() { + Key key1 = new Key("abc".getBytes(), 1.0); + Key key2 = new Key("abc".getBytes(), 2.0); + assertFalse(key1.equals(key2)); + } + + @Test + public void testEqualsIsFalseForNonKeyObject() { + Key key1 = new Key("abc".getBytes(), 1.0); + assertFalse(key1.equals("abc")); + } + + @Test + public void testCompareToDifferentLength() { + Key shortKey = new Key("ab".getBytes()); + Key longKey = new Key("abc".getBytes()); + assertTrue(shortKey.compareTo(longKey) < 0); + assertTrue(longKey.compareTo(shortKey) > 0); + } + + @Test + public void testCompareToSameLengthDifferentBytes() { + Key key1 = new Key("aac".getBytes()); + Key key2 = new Key("abc".getBytes()); + assertTrue(key1.compareTo(key2) < 0); + } + + @Test + public void testCompareToSameBytesDifferentWeight() { + Key key1 = new Key("abc".getBytes(), 1.0); + Key key2 = new Key("abc".getBytes(), 2.0); + assertTrue(key1.compareTo(key2) < 0); + assertTrue(key2.compareTo(key1) > 0); + } + + @Test + public void testCompareToEqualKeys() { + Key key1 = new Key("abc".getBytes(), 1.0); + Key key2 = new Key("abc".getBytes(), 1.0); + assertEquals(0, key1.compareTo(key2)); + } + + @Test + public void testWriteAndReadFieldsRoundTrip() throws IOException { Review Comment: Agreed, though a straight extraction will not typecheck: `TestInternalBloomFilter#serialize` is typed to `InternalBloomFilter`, and `Key` implements only `Comparable<Key>` while `InternalFilter` is a plain abstract class, so the two share no supertype exposing `write(DataOutput)`. A package-local helper that takes the write call instead of the object covers all three, e.g. `static byte[] serialize(ThrowingConsumer<DataOutput> writer)` from `org.apache.hudi.common.function`, invoked as `serialize(original::write)`. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
