[VarDumper] Fix PHP7 type-hints compat

src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php

@@ -167,7 +167,11 @@ class ReflectionCaster
         ));
 
         try {
-            if ($c->isArray()) {
+            if (method_exists($c, 'hasType')) {
+                if ($c->hasType()) {
+                    $a[$prefix.'typeHint'] = $c->getType()->__toString();
+                }
+            } elseif ($c->isArray()) {
                 $a[$prefix.'typeHint'] = 'array';
             } elseif (method_exists($c, 'isCallable') && $c->isCallable()) {
                 $a[$prefix.'typeHint'] = 'callable';

src/Symfony/Component/VarDumper/Tests/Caster/ReflectionCasterTest.php

@@ -81,17 +81,38 @@ EOTXT
     /**
      * @requires PHP 7.0
      */
-    public function testReturnType()
+    public function testReflectionParameterScalar()
     {
-        $f = eval('return function ():int {};');
+        $f = eval('return function (int $a) {};');
+        $var = new \ReflectionParameter($f, 0);
 
         $this->assertDumpMatchesFormat(
             <<<'EOTXT'
+ReflectionParameter {
+  +name: "a"
+  position: 0
+  typeHint: "int"
+}
+EOTXT
+            , $var
+        );
+    }
+
+    /**
+     * @requires PHP 7.0
+     */
+    public function testReturnType()
+    {
+        $f = eval('return function ():int {};');
+        $line = __LINE__ - 1;
+
+        $this->assertDumpMatchesFormat(
+            <<<EOTXT
 Closure {
   returnType: "int"
   class: "Symfony\Component\VarDumper\Tests\Caster\ReflectionCasterTest"
   this: Symfony\Component\VarDumper\Tests\Caster\ReflectionCasterTest { …}
-  file: "%sReflectionCasterTest.php(86) : eval()'d code"
+  file: "%sReflectionCasterTest.php($line) : eval()'d code"
   line: "1 to 1"
 }
 EOTXT