add support for minItems when applying defaults

Author: mathroc

src/JsonSchema/Constraints/UndefinedConstraint.php

@@ -252,13 +252,15 @@ protected function applyDefaultValues(&$value, $schema, $path)
                     $this->appliedDefaults[] = $currentProperty;
                 }
             }
-        } elseif (
-            isset($schema->items) &&
-            LooseTypeCheck::isArray($schema->items) &&
-            LooseTypeCheck::isArray($value)
-        ) {
+        } elseif (isset($schema->items) && LooseTypeCheck::isArray($value)) {
+            $items = array();
+            if (LooseTypeCheck::isArray($schema->items)) {
+                $items = $schema->items;
+            } elseif (isset($schema->minItems) && count($value) < $schema->minItems) {
+                $items = array_fill(count($value), $schema->minItems - 1, $schema->items);
+            }
             // $value is an array, and items are defined - treat as plain array
-            foreach ($schema->items as $currentItem => $itemDefinition) {
+            foreach ($items as $currentItem => $itemDefinition) {
                 if (
                     !array_key_exists($currentItem, $value)
                     && property_exists($itemDefinition, 'default')

tests/Constraints/DefaultPropertiesTest.php

@@ -159,6 +159,11 @@ public function getValidTests()
                 '{"items":{"properties":{"propertyOne":{"default":"valueOne"}}}}',
                 '[]'
             ),
+            array(// #23 if items is a schema with a default value and minItems is present, fill the array
+                '["a"]',
+                '{"items":{"default":"b"}, "minItems": 3}',
+                '["a","b","b"]'
+            ),
         );
     }