bug #5781 ClassDefinition - fix for anonymous class with trailing comma (kubawerlos)

This PR was squashed before being merged into the 2.19 branch.

Discussion
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ClassDefinition - fix for anonymous class with trailing comma

Fixes #5780

The problem was that for the code `<?php new class(1, 2, 3,) {};` space after trailing comma was added and then removed in next run and so on.

Commits
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97ebf566a ClassDefinition - fix for anonymous class with trailing comma

src/Fixer/ClassNotation/ClassDefinitionFixer.php

@@ -372,7 +372,7 @@ interface Bar extends
                     continue;
                 }
 
-                if ($tokens[$i + 1]->equalsAny([',', '(', ')']) || $tokens[$i - 1]->equals('(')) {
+                if (!$tokens[$i - 1]->equals(',') && $tokens[$i + 1]->equalsAny([',', '(', ')']) || $tokens[$i - 1]->equals('(')) {
                     $tokens->clearAt($i);
 
                     continue;

tests/Fixer/ClassNotation/ClassDefinitionFixerTest.php

@@ -628,17 +628,17 @@ namespace {
      * @param string      $expected
      * @param null|string $input
      *
-     * @dataProvider providePHP7Cases
+     * @dataProvider providePHP70Cases
      * @requires PHP 7.0
      */
-    public function testFixPHP7($expected, $input = null)
+    public function testFixPHP70($expected, $input = null)
     {
         $this->fixer->configure([]);
 
         $this->doTest($expected, $input);
     }
 
-    public function providePHP7Cases()
+    public function providePHP70Cases()
     {
         return [
             [
@@ -674,6 +674,37 @@ $a = new class implements
         ];
     }
 
+    /**
+     * @param string $expected
+     * @param string $input
+     *
+     * @dataProvider providePHP73Cases
+     * @requires PHP 7.3
+     */
+    public function testFixPHP73($expected, $input)
+    {
+        $this->fixer->configure([]);
+        $this->doTest($expected, $input);
+    }
+
+    public function providePHP73Cases()
+    {
+        return [
+            [
+                '<?php new class(1, 2, 3, ) {};',
+                '<?php new class(1, 2, 3,) {};',
+            ],
+            [
+                '<?php new class(1, 2, 3, ) {};',
+                '<?php new class(
+                    1,
+                    2,
+                    3,
+                ) {};',
+            ],
+        ];
+    }
+
     /**
      * @param string      $expected
      * @param null|string $input