LUCENE-8626: standardise 3 more Lucene test names (#2440)

diff --git a/lucene/core/src/test/org/apache/lucene/search/BaseTestRangeFilter.java b/lucene/core/src/test/org/apache/lucene/search/TestBaseRangeFilter.java
similarity index 99%
rename from lucene/core/src/test/org/apache/lucene/search/BaseTestRangeFilter.java
rename to lucene/core/src/test/org/apache/lucene/search/TestBaseRangeFilter.java
index 7c1dd23..f382021 100644
--- a/lucene/core/src/test/org/apache/lucene/search/BaseTestRangeFilter.java
+++ b/lucene/core/src/test/org/apache/lucene/search/TestBaseRangeFilter.java
@@ -38,7 +38,7 @@
 import org.junit.BeforeClass;
 import org.junit.Test;
 
-public class BaseTestRangeFilter extends LuceneTestCase {
+public class TestBaseRangeFilter extends LuceneTestCase {
 
   public static final boolean F = false;
   public static final boolean T = true;
diff --git a/lucene/core/src/test/org/apache/lucene/search/TestMultiTermConstantScore.java b/lucene/core/src/test/org/apache/lucene/search/TestMultiTermConstantScore.java
index f1dda35..0cd8013 100644
--- a/lucene/core/src/test/org/apache/lucene/search/TestMultiTermConstantScore.java
+++ b/lucene/core/src/test/org/apache/lucene/search/TestMultiTermConstantScore.java
@@ -32,7 +32,7 @@
 import org.junit.BeforeClass;
 import org.junit.Test;
 
-public class TestMultiTermConstantScore extends BaseTestRangeFilter {
+public class TestMultiTermConstantScore extends TestBaseRangeFilter {
 
   /** threshold for comparing floats */
   public static final float SCORE_COMP_THRESH = 1e-6f;
diff --git a/lucene/sandbox/src/test/org/apache/lucene/sandbox/search/LongHashSetTests.java b/lucene/sandbox/src/test/org/apache/lucene/sandbox/search/TestLongHashSet.java
similarity index 98%
rename from lucene/sandbox/src/test/org/apache/lucene/sandbox/search/LongHashSetTests.java
rename to lucene/sandbox/src/test/org/apache/lucene/sandbox/search/TestLongHashSet.java
index 5401a10..9c461c5 100644
--- a/lucene/sandbox/src/test/org/apache/lucene/sandbox/search/LongHashSetTests.java
+++ b/lucene/sandbox/src/test/org/apache/lucene/sandbox/search/TestLongHashSet.java
@@ -23,7 +23,7 @@
 import java.util.stream.LongStream;
 import org.apache.lucene.util.LuceneTestCase;
 
-public class LongHashSetTests extends LuceneTestCase {
+public class TestLongHashSet extends LuceneTestCase {
 
   private void assertEquals(Set<Long> set1, LongHashSet set2) {
     LuceneTestCase.assertEquals(set1, set2);
diff --git a/lucene/spatial-extras/src/test/org/apache/lucene/spatial/SpatialExample.java b/lucene/spatial-extras/src/test/org/apache/lucene/spatial/TestSpatialExample.java
similarity index 98%
rename from lucene/spatial-extras/src/test/org/apache/lucene/spatial/SpatialExample.java
rename to lucene/spatial-extras/src/test/org/apache/lucene/spatial/TestSpatialExample.java
index f406a7b..ec6e663 100644
--- a/lucene/spatial-extras/src/test/org/apache/lucene/spatial/SpatialExample.java
+++ b/lucene/spatial-extras/src/test/org/apache/lucene/spatial/TestSpatialExample.java
@@ -48,12 +48,12 @@
 import org.locationtech.spatial4j.shape.Shape;
 
 /** This class serves as example code to show how to use the Lucene spatial module. */
-public class SpatialExample extends LuceneTestCase {
+public class TestSpatialExample extends LuceneTestCase {
 
   // Note: Test invoked via TestTestFramework.spatialExample()
 
   public static void main(String[] args) throws Exception {
-    new SpatialExample().test();
+    new TestSpatialExample().test();
   }
 
   public void test() throws Exception {
diff --git a/lucene/spatial-extras/src/test/org/apache/lucene/spatial/TestTestFramework.java b/lucene/spatial-extras/src/test/org/apache/lucene/spatial/TestTestFramework.java
index 6d47b45..ea18c35 100644
--- a/lucene/spatial-extras/src/test/org/apache/lucene/spatial/TestTestFramework.java
+++ b/lucene/spatial-extras/src/test/org/apache/lucene/spatial/TestTestFramework.java
@@ -59,6 +59,6 @@
   public void spatialExample() throws Exception {
     // kind of a hack so that SpatialExample is tested despite
     // it not starting or ending with "Test".
-    SpatialExample.main(null);
+    TestSpatialExample.main(null);
   }
 }