minor #20104 [TwigBundle] Adjust CacheWarmingTest for TemplateCacheWa…

…rmer introduced in 2.8 (tucksaun)

This PR was merged into the 2.8 branch.

Discussion
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[TwigBundle] Adjust CacheWarmingTest for TemplateCacheWarmer introduced in 2.8

| Q             | A
| ------------- | ---
| Branch?       | 2.8
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

With #20103, issue reported in #20065 is fixed, however it will now break in 2.8+ as another cache warmer has been introduced with #16271.

Commits
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360ca48 [TwigBundle] Adjust CacheWarmingTest for TemplateCacheWarmer introduced in 2.8

src/Symfony/Bundle/TwigBundle/Tests/Functional/CacheWarmingTest.php

@@ -31,7 +31,7 @@ public function testCacheIsProperlyWarmedWhenTemplatingIsAvailable()
         $this->assertTrue(file_exists($kernel->getCacheDir().'/twig'));
     }
 
-    public function testCacheIsNotWarmedWhenTemplatingIsDisabled()
+    public function testCacheIsProperlyWarmedWhenTemplatingIsDisabled()
     {
         $kernel = new CacheWarmingKernel(false);
         $kernel->boot();
@@ -40,7 +40,7 @@ public function testCacheIsNotWarmedWhenTemplatingIsDisabled()
         $warmer->enableOptionalWarmers();
         $warmer->warmUp($kernel->getCacheDir());
 
-        $this->assertFalse(file_exists($kernel->getCacheDir().'/twig'));
+        $this->assertTrue(file_exists($kernel->getCacheDir().'/twig'));
     }
 
     protected function setUp()