Invert before/after for diffs as that's what phpcs assumes

Author: afilina

src/Parser/UserDocParser.php

@@ -41,8 +41,8 @@ private function getDiffs(SimpleXMLElement $doc): array
         $comparisons = [];
         foreach ($doc->code_comparison as $comparison) {
             $comparisons[] = new Diff(
-                (string)s::create((string)$comparison->code[0])->trim(),
                 (string)s::create((string)$comparison->code[1])->trim(),
+                (string)s::create((string)$comparison->code[0])->trim(),
             );
         }
 

tests/Parser/UserDocParserTest.php

@@ -73,8 +73,8 @@ function b() {
         $doc = $this->parser->getUserDoc(self::XML_FILE_PATH);
         self::assertEquals(
             [
-                new Diff("function a() {\n}", "function b() {\n}"),
-                new Diff('a();', 'b();'),
+                new Diff("function b() {\n}", "function a() {\n}"),
+                new Diff('b();', 'a();'),
             ],
             $doc->getDiffs()
         );