[BUGFIX] Avoid undefined array keys error using stdWrap_bytes

If either labels or base are not given, the default values
kick in: labels = iec and base = 1024

With the new fallback values in place test ContentObjectRendererTest
notAllStdWrapProcessorsAreCallableWithEmptyConfiguration()
needs a minor adaption.

Resolves: #98154
Releases: main, 11.5
Change-Id: Ib2a242454197be94a75fb3d5bffbb8d0be8a1523
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/75519
Tested-by: core-ci <typo3@b13.com>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>

typo3/sysext/frontend/Classes/ContentObject/ContentObjectRenderer.php

@@ -2082,7 +2082,7 @@ public function stdWrap_case($content = '', $conf = [])
      */
     public function stdWrap_bytes($content = '', $conf = [])
     {
-        return GeneralUtility::formatSize((int)$content, $conf['bytes.']['labels'], $conf['bytes.']['base']);
+        return GeneralUtility::formatSize((int)$content, $conf['bytes.']['labels'] ?? '', $conf['bytes.']['base'] ?? 0);
     }
 
     /**

typo3/sysext/frontend/Tests/Unit/ContentObject/ContentObjectRendererTest.php

@@ -3546,12 +3546,12 @@ public function allStdWrapProcessorsAreCallable(): void
      * - Almost all stdWrap_[type] are callable if called with 2 parameters:
      *   - string $content Empty string.
      *   - array $conf ['type' => '', 'type.' => []].
-     * - Exceptions: stdWrap_numRows, stdWrap_split
+     * - Exceptions: stdWrap_numRows
      * - The overall count is 91.
      *
      *  Note:
      *
-     *  The two exceptions break, if the configuration is empty. This test just
+     *  The exceptions break, if the configuration is empty. This test just
      *  tracks the different behaviour to gain information. It doesn't mean
      *  that it is an issue.
      *
@@ -3563,7 +3563,7 @@ public function notAllStdWrapProcessorsAreCallableWithEmptyConfiguration(): void
         GeneralUtility::setSingletonInstance(TimeTracker::class, $timeTrackerProphecy->reveal());
 
         // `parseFunc` issues deprecation in case `htmlSanitize` is not given
-        $expectExceptions = ['numRows', 'parseFunc', 'bytes'];
+        $expectExceptions = ['numRows', 'parseFunc'];
         $count = 0;
         $processors = [];
         $exceptions = [];
@@ -3982,6 +3982,16 @@ public function stdWrap_bytesDataProvider(): array
                 '1234567890',
                 ['labels' => '', 'base' => 0],
             ],
+            'value 1234 iec no base' => [
+                '1.21 Ki',
+                '1234',
+                ['labels' => 'iec'],
+            ],
+            'value 1234 no labels base set' => [
+                '1.21 Ki',
+                '1234',
+                ['base' => 0],
+            ],
         ];
     }