Merge branch '4.3' into 4.4

* 4.3:
  [Cache] fix cs
  Make tests support phpunit 8
  Allow Travis CI to build on PHP 7.4

Author: nicolas-grekas

Tests/Command/LintCommandTest.php

@@ -12,6 +12,7 @@
 namespace Symfony\Component\Yaml\Tests\Command;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Bridge\PhpUnit\ForwardCompatTestTrait;
 use Symfony\Component\Console\Application;
 use Symfony\Component\Console\Output\OutputInterface;
 use Symfony\Component\Console\Tester\CommandTester;
@@ -24,6 +25,8 @@
  */
 class LintCommandTest extends TestCase
 {
+    use ForwardCompatTestTrait;
+
     private $files;
 
     public function testLintCorrectFile()
@@ -127,13 +130,13 @@ protected function createCommandTester()
         return new CommandTester($command);
     }
 
-    protected function setUp()
+    private function doSetUp()
     {
         $this->files = [];
         @mkdir(sys_get_temp_dir().'/framework-yml-lint-test');
     }
 
-    protected function tearDown()
+    private function doTearDown()
     {
         foreach ($this->files as $file) {
             if (file_exists($file)) {

Tests/DumperTest.php

@@ -12,13 +12,16 @@
 namespace Symfony\Component\Yaml\Tests;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Bridge\PhpUnit\ForwardCompatTestTrait;
 use Symfony\Component\Yaml\Dumper;
 use Symfony\Component\Yaml\Parser;
 use Symfony\Component\Yaml\Tag\TaggedValue;
 use Symfony\Component\Yaml\Yaml;
 
 class DumperTest extends TestCase
 {
+    use ForwardCompatTestTrait;
+
     protected $parser;
     protected $dumper;
     protected $path;
@@ -38,14 +41,14 @@ class DumperTest extends TestCase
         ],
     ];
 
-    protected function setUp()
+    private function doSetUp()
     {
         $this->parser = new Parser();
         $this->dumper = new Dumper();
         $this->path = __DIR__.'/Fixtures';
     }
 
-    protected function tearDown()
+    private function doTearDown()
     {
         $this->parser = null;
         $this->dumper = null;

Tests/InlineTest.php

@@ -12,14 +12,17 @@
 namespace Symfony\Component\Yaml\Tests;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Bridge\PhpUnit\ForwardCompatTestTrait;
 use Symfony\Component\Yaml\Exception\ParseException;
 use Symfony\Component\Yaml\Inline;
 use Symfony\Component\Yaml\Tag\TaggedValue;
 use Symfony\Component\Yaml\Yaml;
 
 class InlineTest extends TestCase
 {
-    protected function setUp()
+    use ForwardCompatTestTrait;
+
+    private function doSetUp()
     {
         Inline::initialize(0, 0);
     }

Tests/ParserTest.php

@@ -12,13 +12,16 @@
 namespace Symfony\Component\Yaml\Tests;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Bridge\PhpUnit\ForwardCompatTestTrait;
 use Symfony\Component\Yaml\Exception\ParseException;
 use Symfony\Component\Yaml\Parser;
 use Symfony\Component\Yaml\Tag\TaggedValue;
 use Symfony\Component\Yaml\Yaml;
 
 class ParserTest extends TestCase
 {
+    use ForwardCompatTestTrait;
+
     /** @var Parser */
     protected $parser;