## org.apache.lucene.search
Class SearchEquivalenceTestBase

    java.lang.Object
      org.junit.Assert
          org.apache.lucene.util.LuceneTestCase
              org.apache.lucene.search.SearchEquivalenceTestBase

    public abstract class SearchEquivalenceTestBase

extends LuceneTestCase

Simple base class for checking search equivalence. Extend it, and write tests that create `randomTerm()`s (all terms are single characters a-z), and use `assertSameSet(Query, Query)` and `assertSubsetOf(Query, Query)`

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.util.LuceneTestCase
`LuceneTestCase.AwaitsFix, LuceneTestCase.BadApple, LuceneTestCase.Nightly, LuceneTestCase.Slow, LuceneTestCase.SuppressCodecs, LuceneTestCase.Weekly`

Field Summary
`protected static Analyzer` `analyzer`
`protected static Directory` `directory`
`protected static IndexReader` `reader`
`protected static IndexSearcher` `s1`
`protected static IndexSearcher` `s2`
`protected static String` `stopword`

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

`classRules, DEFAULT_LINE_DOCS_FILE, doesntSupportOffsets, INFOSTREAM, JENKINS_LARGE_LINE_DOCS_FILE, PREFLEX_IMPERSONATION_IS_ACTIVE, RANDOM_MULTIPLIER, ruleChain, suiteFailureMarker, SYSPROP_AWAITSFIX, SYSPROP_BADAPPLES, SYSPROP_NIGHTLY, SYSPROP_SLOW, SYSPROP_WEEKLY, TEMP_DIR, TEST_AWAITSFIX, TEST_CODEC, TEST_DIRECTORY, TEST_DOCVALUESFORMAT, TEST_LINE_DOCS_FILE, TEST_NIGHTLY, TEST_POSTINGSFORMAT, TEST_SLOW, TEST_THROTTLING, TEST_VERSION_CURRENT, TEST_WEEKLY, VERBOSE`

Constructor Summary
`SearchEquivalenceTestBase()`

Method Summary
`static void` `afterClass()`
`void` `assertSameSet(Query q1, Query q2)` Asserts that the documents returned by `q1` are the same as of those returned by `q2`
`void` `assertSubsetOf(Query q1, Query q2)` Asserts that the documents returned by `q1` are a subset of those returned by `q2`
`protected void` `assertSubsetOf(Query q1, Query q2, Filter filter)` Asserts that the documents returned by `q1` are a subset of those returned by `q2`.
`static void` `beforeClass()`
`protected Filter` `randomFilter()` Returns a random filter over the document set
`protected Term` `randomTerm()` returns a term suitable for searching.

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

`assertSaneFieldCaches, asSet, assumeFalse, assumeNoException, assumeTrue, atLeast, atLeast, closeAfterSuite, closeAfterTest, defaultCodecSupportsDocValues, defaultCodecSupportsSortedSet, dumpArray, dumpIterator, getDataFile, getOnlySegmentReader, getTestClass, getTestName, isTestThread, localeForName, maybeWrapReader, newAlcoholicMergePolicy, newAlcoholicMergePolicy, newDirectory, newDirectory, newDirectory, newDirectory, newField, newField, newFSDirectory, newFSDirectory, newIndexWriterConfig, newIndexWriterConfig, newIOContext, newIOContext, newLogMergePolicy, newLogMergePolicy, newLogMergePolicy, newLogMergePolicy, newLogMergePolicy, newMockDirectory, newMockDirectory, newMockFSDirectory, newSearcher, newSearcher, newStringField, newStringField, newTextField, newTextField, newTieredMergePolicy, newTieredMergePolicy, random, randomLocale, randomTimeZone, rarely, rarely, setUp, tearDown, usually, usually`

Methods inherited from class org.junit.Assert

`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, assertFalse, assertFalse, assertNotNull, assertNotNull, assertNotSame, assertNotSame, assertNull, assertNull, assertSame, assertSame, assertThat, assertThat, assertTrue, assertTrue, fail, fail`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### s1

    protected static IndexSearcher s1

### s2

    protected static IndexSearcher s2

### directory

    protected static Directory directory

### reader

    protected static IndexReader reader

### analyzer

    protected static Analyzer analyzer

### stopword

    protected static String stopword

Constructor Detail

### SearchEquivalenceTestBase

    public SearchEquivalenceTestBase()

Method Detail

### beforeClass

    public static void beforeClass()
                            throws Exception

  Throws:
    `Exception`

### afterClass

    public static void afterClass()
                           throws Exception

  Throws:
    `Exception`

### randomTerm

    protected Term randomTerm()

  returns a term suitable for searching. terms are single characters in lowercase (a-z)

### randomFilter

    protected Filter randomFilter()

  Returns a random filter over the document set

### assertSameSet

    public void assertSameSet(Query q1,
                              Query q2)
                       throws Exception

  Asserts that the documents returned by `q1` are the same as of those returned by `q2`

  Throws:
    `Exception`

### assertSubsetOf

    public void assertSubsetOf(Query q1,
                               Query q2)
                        throws Exception

  Asserts that the documents returned by `q1` are a subset of those returned by `q2`

  Throws:
    `Exception`

### assertSubsetOf

    protected void assertSubsetOf(Query q1,
                                  Query q2,
                                  Filter filter)
                           throws Exception

  Asserts that the documents returned by `q1` are a subset of those returned by `q2`. Both queries will be filtered by `filter`

  Throws:
    `Exception`

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