Class HashFunctionTestCase

java.lang.Object

org.junit.Assert

org.apache.lucene.tests.util.LuceneTestCase

org.opensearch.test.OpenSearchTestCase

org.opensearch.common.hash.HashFunctionTestCase

public abstract class HashFunctionTestCase
extends OpenSearchTestCase

Base class for testing the quality of hash functions.

Nested Class Summary

Nested classes/interfaces inherited from class org.opensearch.test.OpenSearchTestCase

OpenSearchTestCase.AnnotatedFeatureFlagRule, OpenSearchTestCase.GeohashGenerator, OpenSearchTestCase.LockFeatureFlag, OpenSearchTestCase.TestAnalysis

Nested classes/interfaces inherited from class org.apache.lucene.tests.util.LuceneTestCase

org.apache.lucene.tests.util.LuceneTestCase.AwaitsFix, org.apache.lucene.tests.util.LuceneTestCase.Concurrency, org.apache.lucene.tests.util.LuceneTestCase.Monster, org.apache.lucene.tests.util.LuceneTestCase.Nightly, org.apache.lucene.tests.util.LuceneTestCase.SuppressCodecs, org.apache.lucene.tests.util.LuceneTestCase.SuppressFileSystems, org.apache.lucene.tests.util.LuceneTestCase.SuppressFsync, org.apache.lucene.tests.util.LuceneTestCase.SuppressReproduceLine, org.apache.lucene.tests.util.LuceneTestCase.SuppressSysoutChecks, org.apache.lucene.tests.util.LuceneTestCase.SuppressTempFileChecks, org.apache.lucene.tests.util.LuceneTestCase.ThrowingConsumer<T>, org.apache.lucene.tests.util.LuceneTestCase.ThrowingRunnable, org.apache.lucene.tests.util.LuceneTestCase.Weekly

Field Summary

Fields inherited from class org.opensearch.test.OpenSearchTestCase

checkIndexFailures, DEFAULT_NAMED_WRITABLE_REGISTRY, DEFAULT_TEST_WORKER_ID, failureAndSuccessEvents, flagLockRule, JAVA_TIMEZONE_IDS, JAVA_ZONE_IDS, JODA_TIMEZONE_IDS, logger, TEST_WORKER_SYS_PROPERTY, TEST_WORKER_VM_ID

Fields inherited from class org.apache.lucene.tests.util.LuceneTestCase

assertsAreEnabled, classRules, DEFAULT_LINE_DOCS_FILE, INFOSTREAM, JENKINS_LARGE_LINE_DOCS_FILE, LEAVE_TEMPORARY, MAYBE_CACHE_POLICY, RANDOM_MULTIPLIER, ruleChain, suiteFailureMarker, SYSPROP_AWAITSFIX, SYSPROP_FAILFAST, SYSPROP_MAXFAILURES, SYSPROP_MONSTER, SYSPROP_NIGHTLY, SYSPROP_WEEKLY, TEST_ASSERTS_ENABLED, TEST_AWAITSFIX, TEST_CODEC, TEST_DIRECTORY, TEST_DOCVALUESFORMAT, TEST_LINE_DOCS_FILE, TEST_MONSTER, TEST_NIGHTLY, TEST_POSTINGSFORMAT, TEST_THROTTLING, TEST_WEEKLY, VERBOSE

Constructor Summary

Constructors

Constructor	Description
HashFunctionTestCase()

Method Summary

Modifier and Type	Method	Description
abstract byte[]	hash(byte[] input)
abstract int	outputBits()
void	testAvalanche()	Tests if the hash function shows an avalanche effect, i.e, flipping a single input bit should flip half the output bits.

Methods inherited from class org.opensearch.test.OpenSearchTestCase

after, afterIfFailed, afterIfSuccessful, allowedWarnings, assertArrayEquals, assertBusy, assertBusy, assertBusyWithFixedSleepTime, assertEquals, assertNoDeprecationWarnings, assertSettingDeprecationsAndWarnings, assertSettingDeprecationsAndWarnings, assertWarnings, assertWarnings, before, between, buildEnvSettings, buildNewFakeTransportAddress, checkStaticState, clearAdditionalRoles, copyInstance, copyNamedWriteable, copyNamedWriteable, copyWriteable, copyWriteable, createDefaultIndexAnalyzers, createParser, createParser, createParser, createParser, createParser, createParser, createTestAnalysis, createTestAnalysis, createTestAnalysis, enableJodaDeprecationWarningsCheck, enableWarningsCheck, ensureAllSearchContextsReleased, ensureCheckIndexPassed, ensureSupportedLocale, frequently, generateRandomStringArray, generateRandomStringArray, getBasePort, getBasePort, getDataPath, getPortRange, getShardLevelBlobPath, getSuiteFailureMarker, getTestTransportPlugin, getTestTransportType, inFipsJvm, iterations, maybeSet, mockScript, newNodeEnvironment, newNodeEnvironment, persistedStateRegistry, randomAlphaOfLength, randomAlphaOfLengthBetween, randomArray, randomArray, randomBigInteger, randomBoolean, randomByte, randomByteArrayOfLength, randomDateFormatterPattern, randomDateTimeZone, randomDouble, randomDoubleBetween, randomFloat, randomFrom, randomFrom, randomFrom, randomFrom, randomFrom, randomGeohash, randomInt, randomInt, randomIntBetween, randomIp, randomList, randomList, randomLong, randomLongBetween, randomNonNegativeInt, randomNonNegativeLong, randomPositiveTimeValue, randomRealisticUnicodeOfCodepointLength, randomRealisticUnicodeOfCodepointLengthBetween, randomRealisticUnicodeOfLength, randomRealisticUnicodeOfLengthBetween, randomShort, randomSubsetOf, randomSubsetOf, randomSubsetOf, randomTimeValue, randomTimeValue, randomTimeValue, randomTimeZone, randomUnicodeOfCodepointLength, randomUnicodeOfCodepointLengthBetween, randomUnicodeOfLength, randomUnicodeOfLengthBetween, randomUnique, randomUnsignedLong, randomValueOtherThan, randomValueOtherThanMany, randomZone, remoteIndexSettings, removeHeaderWarningAppender, replaceUnicodeControlCharacters, replaceUnicodeControlCharacters, resetCheckIndexStatus, resetPortCounter, restoreContentType, restoreFileSystem, scaledRandomIntBetween, setContentType, setFileSystem, setHeaderWarningAppender, settings, shuffleMap, shuffleXContent, shuffleXContent, spinForAtLeastNMilliseconds, spinForAtLeastOneMillisecond, tearDown, terminate, terminate, tmpPaths, toShuffledXContent, toShuffledXContent, waitUntil, waitUntil, warmIndexSettings, writableRegistry, xContentRegistry

Methods inherited from class org.apache.lucene.tests.util.LuceneTestCase

addVirusChecker, assertDeletedDocsEquals, assertDocsAndPositionsEnumEquals, assertDocsEnumEquals, assertDocsSkippingEquals, assertDocValuesEquals, assertDocValuesEquals, assertDoubleUlpEquals, assertFieldInfosEquals, assertFloatUlpEquals, assertNormsEquals, assertPointsEquals, assertPositionsSkippingEquals, assertReaderEquals, assertReaderStatisticsEquals, assertStoredFieldEquals, assertStoredFieldsEquals, assertTermsEnumEquals, assertTermsEquals, assertTermsEquals, assertTermsStatisticsEquals, assertTermStatsEquals, assertTermVectorsEquals, assertThat, assertThat, asSet, assumeFalse, assumeNoException, assumeTrue, atLeast, atLeast, callStackContains, callStackContains, callStackContainsAnyOf, closeAfterSuite, closeAfterTest, collate, createTempDir, createTempDir, createTempFile, createTempFile, dumpArray, dumpIterator, ensureSaneIWCOnNightly, expectThrows, expectThrows, expectThrows, expectThrowsAnyOf, expectThrowsAnyOf, getDataInputStream, getJvmForkArguments, getOnlyLeafReader, getTestClass, getTestName, isTestThread, localeForLanguageTag, maybeChangeLiveIndexWriterConfig, maybeWrapReader, newAlcoholicMergePolicy, newAlcoholicMergePolicy, newBytesRef, newBytesRef, newBytesRef, newBytesRef, newBytesRef, newBytesRef, newDirectory, newDirectory, newDirectory, newDirectory, newDirectory, newField, newField, newFSDirectory, newFSDirectory, newIndexWriterConfig, newIndexWriterConfig, newIndexWriterConfig, newIOContext, newIOContext, newLogMergePolicy, newLogMergePolicy, newLogMergePolicy, newLogMergePolicy, newLogMergePolicy, newMaybeVirusCheckingDirectory, newMaybeVirusCheckingFSDirectory, newMergePolicy, newMergePolicy, newMergePolicy, newMockDirectory, newMockDirectory, newMockDirectory, newMockFSDirectory, newMockFSDirectory, newSearcher, newSearcher, newSearcher, newSearcher, newSearcher, newSnapshotIndexWriterConfig, newStringField, newStringField, newStringField, newStringField, newTextField, newTextField, newTieredMergePolicy, newTieredMergePolicy, overrideDefaultQueryCache, overrideTestDefaultQueryCache, random, randomLocale, randomTimeZone, randomVectorFormat, rarely, rarely, replaceMaxFailureRule, resetDefaultQueryCache, restoreCPUCoreCount, restoreIndexWriterMaxDocs, runWithRestrictedPermissions, setIndexWriterMaxDocs, setUp, setupCPUCoreCount, setUpExecutorService, shutdownExecutorService, slowFileExists, usually, usually, wrapReader

Methods inherited from class org.junit.Assert

assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertFalse, assertFalse, assertNotEquals, assertNotEquals, assertNotEquals, assertNotEquals, assertNotEquals, assertNotEquals, assertNotEquals, assertNotEquals, assertNotNull, assertNotNull, assertNotSame, assertNotSame, assertNull, assertNull, assertSame, assertSame, assertThrows, assertThrows, assertTrue, assertTrue, fail, fail

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

HashFunctionTestCase

public HashFunctionTestCase()

Method Details

hash

public abstract byte[] hash(byte[] input)

outputBits

public abstract int outputBits()

testAvalanche

public void testAvalanche()

Tests if the hash function shows an avalanche effect, i.e, flipping a single input bit should flip half the output bits.