feature #12602 Add type aliases for allowed types in OptionsResolver (henrikbjorn)

This PR was submitted for the 2.3 branch but it was merged into the 2.7 branch instead (closes #12602).

Discussion
----------

Add type aliases for allowed types in OptionsResolver

| Q             | A
| ------------- | ---
| Bug fix?      | [yes]
| New feature?  | [no]
| BC breaks?    | [no]
| Deprecations? | [no]
| Tests pass?   | [yes]
| Fixed tickets | [#12586]
| License       | MIT

Improves DX by allowing type names that does not correspond 1 to 1
with php is_ functions.

integer => int
boolean => bool
double => float

(have one for 2.6 branch aswell, but cant never remember what branch i am supposed to base stuff off)

Commits
-------

ae544e5 Add type aliases for allowed types in OptionsResolver

src/Symfony/Component/OptionsResolver/OptionsResolver.php

@@ -110,6 +110,12 @@ class OptionsResolver implements Options, OptionsResolverInterface
      */
     private $locked = false;
 
+    private static $typeAliases = array(
+        'boolean' => 'bool',
+        'integer' => 'int',
+        'double' => 'float',
+    );
+
     /**
      * Sets the default value of a given option.
      *
@@ -844,6 +850,8 @@ class OptionsResolver implements Options, OptionsResolverInterface
             $valid = false;
 
             foreach ($this->allowedTypes[$option] as $type) {
+                $type = isset(self::$typeAliases[$type]) ? self::$typeAliases[$type] : $type;
+
                 if (function_exists($isFunction = 'is_'.$type)) {
                     if ($isFunction($value)) {
                         $valid = true;

src/Symfony/Component/OptionsResolver/Tests/OptionsResolverTest.php

@@ -78,6 +78,21 @@ class OptionsResolverTest extends \PHPUnit_Framework_TestCase
         ), $this->resolver->resolve(array()));
     }
 
+    public function testTypeAliasesForAllowedTypes()
+    {
+        $this->resolver->setDefaults(array(
+            'force' => false,
+        ));
+
+        $this->resolver->setAllowedTypes(array(
+            'force' => 'boolean',
+        ));
+
+        $this->resolver->resolve(array(
+            'force' => true,
+        ));
+    }
+
     public function testResolveLazyDependencyOnOptional()
     {
         $this->resolver->setDefaults(array(