all XArray::getAll to return null default value

Author: Andy Vaughn

src/XArray.php

@@ -83,10 +83,10 @@ public function __construct(array $array = null) { $this->array = $array !== nul
      * If the found value is a single value, it is wrapped in an array then returned.
      *
      * @param string $key - the array path to return, i.e. /pages/content
-     * @param array $default - if the key is not found, this array will be returned
+     * @param array|null $default - if the key is not found, this array or null will be returned
      * @return array|null
      */
-    public function getAll(string $key = '', array $default = []) : ?array {
+    public function getAll(string $key = '', ?array $default = []) : ?array {
         $array = $this->array;
         if($key === '') {
             return $array;

tests/XArrayBase/getAll_Test.php

@@ -39,6 +39,21 @@ public function Can_get_all_values(array $source, string $xpath, array $expected
         // assert
         $this->assertEquals($expected, $result);
     }
+
+    /**
+     * @test
+     */
+    public function Can_get_null_default_value() {
+
+        // arrange
+        $x = $this->newXArray(['foo' => ['bar', 'baz']]);
+
+        // act
+        $result = $x->getAll('qux', null);
+
+        // assert
+        $this->assertNull($result);
+    }
 
     /**
      * @return array