Tests/HasNewLineSupportTest: work round removal of the setOutputCallback() method

PHPUnit 10.0 removed the `TestCase::setOutputCallback()` method without replacement.

Refs:
* sebastianbergmann/phpunit 5319

Author: jrfnl

PHPCSDebug/Tests/Debug/TokenListCssTest.php

@@ -113,9 +113,6 @@ public function testOutput()
 
 EOD;
 
-        $this->expectOutputString($expected);
-        $this->setOutputCallback([$this, 'normalizeLineEndings']);
-
         if (empty(self::$phpcsFile->ruleset->tokenListeners)) {
             // PHPCSUtils 1.0.9+.
             $sniffFile      = \dirname(\dirname(__DIR__)) . \DIRECTORY_SEPARATOR . 'Sniffs';
@@ -127,7 +124,13 @@ public function testOutput()
             self::$phpcsFile->ruleset->populateTokenListeners();
         }
 
+        \ob_start();
         self::$phpcsFile->process();
+
+        $output = \ob_get_contents();
+        \ob_end_clean();
+
+        $this->assertSame($expected, $this->normalizeLineEndings($output));
     }
 
     /**

PHPCSDebug/Tests/Debug/TokenListJsTest.php

@@ -133,9 +133,6 @@ public function testOutput()
 
 EOD;
 
-        $this->expectOutputString($expected);
-        $this->setOutputCallback([$this, 'normalizeLineEndings']);
-
         if (empty(self::$phpcsFile->ruleset->tokenListeners)) {
             // PHPCSUtils 1.0.9+.
             $sniffFile      = \dirname(\dirname(__DIR__)) . \DIRECTORY_SEPARATOR . 'Sniffs';
@@ -147,7 +144,13 @@ public function testOutput()
             self::$phpcsFile->ruleset->populateTokenListeners();
         }
 
+        \ob_start();
         self::$phpcsFile->process();
+
+        $output = \ob_get_contents();
+        \ob_end_clean();
+
+        $this->assertSame($expected, $this->normalizeLineEndings($output));
     }
 
     /**

PHPCSDebug/Tests/Debug/TokenListUnitTest.php

@@ -106,9 +106,6 @@ public function testOutput()
 
 EOD;
 
-        $this->expectOutputString($expected);
-        $this->setOutputCallback([$this, 'normalizeLineEndings']);
-
         if (empty(self::$phpcsFile->ruleset->tokenListeners)) {
             // PHPCSUtils 1.0.9+.
             $sniffFile      = \dirname(\dirname(__DIR__)) . \DIRECTORY_SEPARATOR . 'Sniffs';
@@ -120,7 +117,13 @@ public function testOutput()
             self::$phpcsFile->ruleset->populateTokenListeners();
         }
 
+        \ob_start();
         self::$phpcsFile->process();
+
+        $output = \ob_get_contents();
+        \ob_end_clean();
+
+        $this->assertSame($expected, $this->normalizeLineEndings($output));
     }
 
     /**