apache / lucene

Apache Lucene open-source search software
https://lucene.apache.org/
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Reproducible failure in TestXYPoint.testEqualsAndHashCode #13292

Closed easyice closed 2 months ago

easyice commented 2 months ago

Description

This failure is because when comparing float values using the == operation, -0.0 is equal to 0.0, but their hashcode is different. should we use Float.compare or Float.floatToRawIntBits instead of == for the compare? it seems to do this change also in XYPoint#equals like:

-    return point.x == x && point.y == y;
+    return Float.compare(point.x, x) == 0 && Float.compare(point.y, y) == 0;
   >     java.lang.AssertionError: expected:<2139095030> but was:<-8388618>
   >         at __randomizedtesting.SeedInfo.seed([3ABEFE4D876DD310:4970068084C8AC21]:0)
   >         at org.junit.Assert.fail(Assert.java:89)
   >         at org.junit.Assert.failNotEquals(Assert.java:835)
   >         at org.junit.Assert.assertEquals(Assert.java:647)
   >         at org.junit.Assert.assertEquals(Assert.java:633)
   >         at org.apache.lucene.geo.TestXYPoint.testEqualsAndHashCode(TestXYPoint.java:95)
   >         at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
   >         at java.base/java.lang.reflect.Method.invoke(Method.java:580)

A similar issue exists in TestXYRectangle#testEqualsAndHashCode, TestXYCircle#testEqualsAndHashCode

Gradle command to reproduce

./gradlew test --tests TestXYPoint.testEqualsAndHashCode -Dtests.seed=3ABEFE4D876DD310 -Dtests.nightly=true -Dtests.locale=es-419 -Dtests.timezone=Asia/Ulaanbaatar -Dtests.asserts=true -Dtests.file.encoding=UTF-8