Add option to disable validation of "format" constraint (#383)

Author: erayd

README.md

@@ -188,6 +188,7 @@ third argument to `Validator::validate()`, or can be provided as the third argum
 | `Constraint::CHECK_MODE_COERCE_TYPES` | Convert data types to match the schema where possible |
 | `Constraint::CHECK_MODE_APPLY_DEFAULTS` | Apply default values from the schema if not set |
 | `Constraint::CHECK_MODE_EXCEPTIONS` | Throw an exception immediately if validation fails |
+| `Constraint::CHECK_MODE_DISABLE_FORMAT` | Do not validate "format" constraints |
 
 Please note that using `Constraint::CHECK_MODE_COERCE_TYPES` or `Constraint::CHECK_MODE_APPLY_DEFAULTS`
 will modify your original data.

src/JsonSchema/Constraints/Constraint.php

@@ -30,6 +30,7 @@ abstract class Constraint extends BaseConstraint implements ConstraintInterface
     const CHECK_MODE_COERCE_TYPES =     0x00000004;
     const CHECK_MODE_APPLY_DEFAULTS =   0x00000008;
     const CHECK_MODE_EXCEPTIONS =       0x00000010;
+    const CHECK_MODE_DISABLE_FORMAT =   0x00000020;
 
     /**
      * Bubble down the path

src/JsonSchema/Constraints/FormatConstraint.php

@@ -27,7 +27,7 @@ class FormatConstraint extends Constraint
      */
     public function check(&$element, $schema = null, JsonPointer $path = null, $i = null)
     {
-        if (!isset($schema->format)) {
+        if (!isset($schema->format) || $this->factory->getConfig(self::CHECK_MODE_DISABLE_FORMAT)) {
             return;
         }
 

tests/Constraints/FormatTest.php

@@ -9,6 +9,8 @@
 
 namespace JsonSchema\Tests\Constraints;
 
+use JsonSchema\Constraints\Constraint;
+use JsonSchema\Constraints\Factory;
 use JsonSchema\Constraints\FormatConstraint;
 
 class FormatTest extends BaseTestCase
@@ -76,6 +78,21 @@ public function testInvalidFormat($string, $format)
         $this->assertEquals(1, count($validator->getErrors()), 'Expected 1 error');
     }
 
+    /**
+     * @dataProvider getInvalidFormats
+     */
+    public function testDisabledFormat($string, $format)
+    {
+        $factory = new Factory();
+        $validator = new FormatConstraint($factory);
+        $schema = new \stdClass();
+        $schema->format = $format;
+        $factory->addConfig(Constraint::CHECK_MODE_DISABLE_FORMAT);
+
+        $validator->check($string, $schema);
+        $this->assertEmpty($validator->getErrors());
+    }
+
     public function getValidFormats()
     {
         return array(