symfony
diff --git a/‎src/Symfony/Component/HttpFoundation/HeaderBag.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/HttpFoundation/HeaderBag.php
+9-1Lines changed: 9 additions & 1 deletion b/‎src/Symfony/Component/HttpFoundation/HeaderBag.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/HttpFoundation/HeaderBag.php
+9-1Lines changed: 9 additions & 1 deletion
diff --git a/‎src/Symfony/Component/HttpFoundation/Tests/HeaderBagTest.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/HttpFoundation/Tests/HeaderBagTest.php
+10Lines changed: 10 additions & 0 deletions b/‎src/Symfony/Component/HttpFoundation/Tests/HeaderBagTest.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/HttpFoundation/Tests/HeaderBagTest.php
+10Lines changed: 10 additions & 0 deletions
diff --git a/‎src/Symfony/Component/HttpFoundation/Tests/ResponseTest.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/HttpFoundation/Tests/ResponseTest.php
+6Lines changed: 6 additions & 0 deletions b/‎src/Symfony/Component/HttpFoundation/Tests/ResponseTest.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/HttpFoundation/Tests/ResponseTest.php
+6Lines changed: 6 additions & 0 deletions
@@ -121,7 +121,15 @@ public function get($key, $default = null, $first = true)
         }
 
         if ($first) {
-            return \count($headers[$key]) ? (string) $headers[$key][0] : $default;
+            if (!$headers[$key]) {
+                return $default;
+            }
+
+            if (null === $headers[$key][0]) {
+                return null;
+            }
+
+            return (string) $headers[$key][0];
         }
 
         return $headers[$key];
 
@@ -48,6 +48,13 @@ public function testGetDate()
         $this->assertInstanceOf('DateTime', $headerDate);
     }
 
+    public function testGetDateNull()
+    {
+        $bag = new HeaderBag(['foo' => null]);
+        $headerDate = $bag->getDate('foo');
+        $this->assertNull($headerDate);
+    }
+
     public function testGetDateException()
     {
         $this->expectException('RuntimeException');
@@ -96,6 +103,9 @@ public function testGet()
         $bag->set('foo', 'bor', false);
         $this->assertEquals('bar', $bag->get('foo'), '->get return first value');
         $this->assertEquals(['bar', 'bor'], $bag->get('foo', 'nope', false), '->get return all values as array');
+
+        $bag->set('baz', null);
+        $this->assertNull($bag->get('baz', 'nope'), '->get return null although different default value is given');
     }
 
     public function testSetAssociativeArray()
 
@@ -369,6 +369,12 @@ public function testExpire()
         $this->assertNull($response->headers->get('Expires'), '->expire() removes the Expires header when the response is fresh');
     }
 
+    public function testNullExpireHeader()
+    {
+        $response = new Response(null, 200, ['Expires' => null]);
+        $this->assertNull($response->getExpires());
+    }
+
     public function testGetTtl()
     {
         $response = new Response();
Original file line number	Diff line number	Diff line change
`@@ -369,6 +369,12 @@ public function testExpire()`
`369`	`369`	`$this->assertNull($response->headers->get('Expires'), '->expire() removes the Expires header when the response is fresh');`
`370`	`370`	`}`
`371`	`371`
	`372`	`+ public function testNullExpireHeader()`
	`373`	`+ {`
	`374`	`+ $response = new Response(null, 200, ['Expires' => null]);`
	`375`	`+ $this->assertNull($response->getExpires());`
	`376`	`+ }`
	`377`	`+`
`372`	`378`	`public function testGetTtl()`
`373`	`379`	`{`
`374`	`380`	`$response = new Response();`