Rename abstract class to prevent PHPUnit warning on 8.2

tests/CollectionTest.php → tests/CollectionTestCase.php

@@ -7,7 +7,7 @@
 use function strpos;
 use function var_dump;
 
-abstract class CollectionTest extends TestCase
+abstract class CollectionTestCase extends TestCase
 {
     /**
      * Sample sizes.

tests/HeapTest.php

@@ -1,7 +1,7 @@
 <?php
 namespace Ds\Tests;
 
-class HeapTest extends CollectionTest
+class HeapTest extends CollectionTestCase
 {
     use Heap\__construct;
     use Heap\_clone;

tests/MapTest.php

@@ -3,7 +3,7 @@
 
 use ArrayAccess;
 
-class MapTest extends CollectionTest
+class MapTest extends CollectionTestCase
 {
     use Map\__construct;
     use Map\_clone;

tests/PairTest.php

@@ -1,7 +1,7 @@
 <?php
 namespace Ds\Tests;
 
-class PairTest extends CollectionTest
+class PairTest extends CollectionTestCase
 {
     use Pair\__construct;
     use Pair\__get;

tests/SeqTest.php

@@ -3,7 +3,7 @@
 
 use ArrayAccess;
 
-class SeqTest extends CollectionTest
+class SeqTest extends CollectionTestCase
 {
     use Seq\__construct;
     use Seq\_clone;

tests/SetTest.php

@@ -3,7 +3,7 @@
 
 use ArrayAccess;
 
-class SetTest extends CollectionTest
+class SetTest extends CollectionTestCase
 {
     use Set\__construct;
     use Set\_clone;