Fix 7.2 compat layer

Author: nicolas-grekas

Tests/Command/CacheClearCommand/CacheClearCommandTest.php

@@ -55,7 +55,7 @@ public function testCacheIsFreshAfterCacheClearedWithWarmup()
         $finder = new Finder();
         $metaFiles = $finder->files()->in($this->kernel->getCacheDir())->name('*.php.meta');
         // simply check that cache is warmed up
-        $this->assertGreaterThanOrEqual(1, count($metaFiles));
+        $this->assertNotEmpty($metaFiles);
         foreach ($metaFiles as $file) {
             $configCache = new ConfigCache(substr($file, 0, -5), true);
             $this->assertTrue(

Tests/Controller/ControllerTest.php

@@ -143,6 +143,9 @@ public function testRedirectToRoute()
         $this->assertSame(302, $response->getStatusCode());
     }
 
+    /**
+     * @runInSeparateProcess
+     */
     public function testAddFlash()
     {
         $flashBag = new FlashBag();

composer.json

@@ -23,7 +23,7 @@
         "symfony/config": "~2.4",
         "symfony/event-dispatcher": "~2.5",
         "symfony/finder": "^2.0.5",
-        "symfony/http-foundation": "~2.7",
+        "symfony/http-foundation": "~2.7.36|^2.8.29",
         "symfony/http-kernel": "~2.7.29|^2.8.22",
         "symfony/filesystem": "~2.3",
         "symfony/routing": "~2.7.24|^2.8.17",