Upgrade 1-11.38

vendor/symfony/http-kernel/Tests/HttpCache/ResponseCacheStrategyTest.php

@@ -175,8 +175,26 @@ class ResponseCacheStrategyTest extends TestCase
         $cacheStrategy->update($masterResponse);
 
         $this->assertTrue($masterResponse->headers->hasCacheControlDirective('private'));
-        // Not sure if we should pass "max-age: 60" in this case, as long as the response is private and
-        // that's the more conservative of both the master and embedded response...?
+        $this->assertFalse($masterResponse->headers->hasCacheControlDirective('public'));
+    }
+
+    public function testEmbeddingPublicResponseDoesNotMakeMainResponsePublic()
+    {
+        $cacheStrategy = new ResponseCacheStrategy();
+
+        $masterResponse = new Response();
+        $masterResponse->setPrivate(); // this is the default, but let's be explicit
+        $masterResponse->setMaxAge(100);
+
+        $embeddedResponse = new Response();
+        $embeddedResponse->setPublic();
+        $embeddedResponse->setSharedMaxAge(100);
+
+        $cacheStrategy->add($embeddedResponse);
+        $cacheStrategy->update($masterResponse);
+
+        $this->assertTrue($masterResponse->headers->hasCacheControlDirective('private'));
+        $this->assertFalse($masterResponse->headers->hasCacheControlDirective('public'));
     }
 
     public function testResponseIsExiprableWhenEmbeddedResponseCombinesExpiryAndValidation()
@@ -198,7 +216,7 @@ class ResponseCacheStrategyTest extends TestCase
         $cacheStrategy->add($embeddedResponse);
         $cacheStrategy->update($masterResponse);
 
-        $this->assertSame('60', $masterResponse->headers->getCacheControlDirective('s-maxage'));
+        $this->assertEqualsWithDelta(60, (int) $masterResponse->headers->getCacheControlDirective('s-maxage'), 1);
     }
 
     public function testResponseIsExpirableButNotValidateableWhenMasterResponseCombinesExpirationAndValidation()
@@ -219,4 +237,233 @@ class ResponseCacheStrategyTest extends TestCase
         $this->assertSame('60', $masterResponse->headers->getCacheControlDirective('s-maxage'));
         $this->assertFalse($masterResponse->isValidateable());
     }
+
+    /**
+     * @dataProvider cacheControlMergingProvider
+     */
+    public function testCacheControlMerging(array $expects, array $master, array $surrogates)
+    {
+        $cacheStrategy = new ResponseCacheStrategy();
+        $buildResponse = function ($config) {
+            $response = new Response();
+
+            foreach ($config as $key => $value) {
+                switch ($key) {
+                    case 'age':
+                        $response->headers->set('Age', $value);
+                        break;
+
+                    case 'expires':
+                        $expires = clone $response->getDate();
+                        $expires->modify('+'.$value.' seconds');
+                        $response->setExpires($expires);
+                        break;
+
+                    case 'max-age':
+                        $response->setMaxAge($value);
+                        break;
+
+                    case 's-maxage':
+                        $response->setSharedMaxAge($value);
+                        break;
+
+                    case 'private':
+                        $response->setPrivate();
+                        break;
+
+                    case 'public':
+                        $response->setPublic();
+                        break;
+
+                    default:
+                        $response->headers->addCacheControlDirective($key, $value);
+                }
+            }
+
+            return $response;
+        };
+
+        foreach ($surrogates as $config) {
+            $cacheStrategy->add($buildResponse($config));
+        }
+
+        $response = $buildResponse($master);
+        $cacheStrategy->update($response);
+
+        foreach ($expects as $key => $value) {
+            if ('expires' === $key) {
+                $this->assertSame($value, $response->getExpires()->format('U') - $response->getDate()->format('U'));
+            } elseif ('age' === $key) {
+                $this->assertSame($value, $response->getAge());
+            } elseif (true === $value) {
+                $this->assertTrue($response->headers->hasCacheControlDirective($key), sprintf('Cache-Control header must have "%s" flag', $key));
+            } elseif (false === $value) {
+                $this->assertFalse(
+                    $response->headers->hasCacheControlDirective($key),
+                    sprintf('Cache-Control header must NOT have "%s" flag', $key)
+                );
+            } else {
+                $this->assertSame($value, $response->headers->getCacheControlDirective($key), sprintf('Cache-Control flag "%s" should be "%s"', $key, $value));
+            }
+        }
+    }
+
+    public function cacheControlMergingProvider()
+    {
+        yield 'result is public if all responses are public' => [
+            ['private' => false, 'public' => true],
+            ['public' => true],
+            [
+                ['public' => true],
+            ],
+        ];
+
+        yield 'result is private by default' => [
+            ['private' => true, 'public' => false],
+            ['public' => true],
+            [
+                [],
+            ],
+        ];
+
+        yield 'combines public and private responses' => [
+            ['must-revalidate' => false, 'private' => true, 'public' => false],
+            ['public' => true],
+            [
+                ['private' => true],
+            ],
+        ];
+
+        yield 'inherits no-cache from surrogates' => [
+            ['no-cache' => true, 'public' => false],
+            ['public' => true],
+            [
+                ['no-cache' => true],
+            ],
+        ];
+
+        yield 'inherits no-store from surrogate' => [
+            ['no-store' => true, 'public' => false],
+            ['public' => true],
+            [
+                ['no-store' => true],
+            ],
+        ];
+
+        yield 'resolve to lowest possible max-age' => [
+            ['public' => false, 'private' => true, 's-maxage' => false, 'max-age' => '60'],
+            ['public' => true, 'max-age' => 3600],
+            [
+                ['private' => true, 'max-age' => 60],
+            ],
+        ];
+
+        yield 'resolves multiple max-age' => [
+            ['public' => false, 'private' => true, 's-maxage' => false, 'max-age' => '60'],
+            ['private' => true, 'max-age' => 100],
+            [
+                ['private' => true, 'max-age' => 3600],
+                ['public' => true, 'max-age' => 60, 's-maxage' => 60],
+                ['private' => true, 'max-age' => 60],
+            ],
+        ];
+
+        yield 'merge max-age and s-maxage' => [
+            ['public' => true, 's-maxage' => '60', 'max-age' => null],
+            ['public' => true, 's-maxage' => 3600],
+            [
+                ['public' => true, 'max-age' => 60],
+            ],
+        ];
+
+        yield 'result is private when combining private responses' => [
+            ['no-cache' => false, 'must-revalidate' => false, 'private' => true],
+            ['s-maxage' => 60, 'private' => true],
+            [
+                ['s-maxage' => 60, 'private' => true],
+            ],
+        ];
+
+        yield 'result can have s-maxage and max-age' => [
+            ['public' => true, 'private' => false, 's-maxage' => '60', 'max-age' => '30'],
+            ['s-maxage' => 100, 'max-age' => 2000],
+            [
+                ['s-maxage' => 1000, 'max-age' => 30],
+                ['s-maxage' => 500, 'max-age' => 500],
+                ['s-maxage' => 60, 'max-age' => 1000],
+            ],
+        ];
+
+        yield 'does not set headers without value' => [
+            ['max-age' => null, 's-maxage' => null, 'public' => null],
+            ['private' => true],
+            [
+                ['private' => true],
+            ],
+        ];
+
+        yield 'max-age 0 is sent to the client' => [
+            ['private' => true, 'max-age' => '0'],
+            ['max-age' => 0, 'private' => true],
+            [
+                ['max-age' => 60, 'private' => true],
+            ],
+        ];
+
+        yield 'max-age is relative to age' => [
+            ['max-age' => '240', 'age' => 60],
+            ['max-age' => 180],
+            [
+                ['max-age' => 600, 'age' => 60],
+            ],
+        ];
+
+        yield 'retains lowest age of all responses' => [
+            ['max-age' => '160', 'age' => 60],
+            ['max-age' => 600, 'age' => 60],
+            [
+                ['max-age' => 120, 'age' => 20],
+            ],
+        ];
+
+        yield 'max-age can be less than age, essentially expiring the response' => [
+            ['age' => 120, 'max-age' => '90'],
+            ['max-age' => 90, 'age' => 120],
+            [
+                ['max-age' => 120, 'age' => 60],
+            ],
+        ];
+
+        yield 'max-age is 0 regardless of age' => [
+            ['max-age' => '0'],
+            ['max-age' => 60],
+            [
+                ['max-age' => 0, 'age' => 60],
+            ],
+        ];
+
+        yield 'max-age is not negative' => [
+            ['max-age' => '0'],
+            ['max-age' => 0],
+            [
+                ['max-age' => 0, 'age' => 60],
+            ],
+        ];
+
+        yield 'calculates lowest Expires header' => [
+            ['expires' => 60],
+            ['expires' => 60],
+            [
+                ['expires' => 120],
+            ],
+        ];
+
+        yield 'calculates Expires header relative to age' => [
+            ['expires' => 210, 'age' => 120],
+            ['expires' => 90],
+            [
+                ['expires' => 600, 'age' => '120'],
+            ],
+        ];
+    }
 }