Add test cases for object modification behavior

Author: danielbachhuber

features/option-pluck-patch.feature

@@ -269,3 +269,33 @@ Feature: Option commands have pluck and patch.
       """
       [ "new", "bar" ]
       """
+
+  @patch @pluck
+  Scenario: An object value can be updated
+    Given a WP install
+    And a setup.php file:
+      """
+      <?php
+      $option = new stdClass;
+      $option->test_mode = 0;
+      $ret = update_option( 'wp_cli_test', $option );
+      """
+    And I run `wp eval-file setup.php`
+
+    When I run `wp option pluck wp_cli_test test_mode`
+    Then STDOUT should be:
+      """
+      0
+      """
+
+    When I run `wp option patch update wp_cli_test test_mode 1`
+    Then STDOUT should be:
+      """
+      Success: Updated 'wp_cli_test' option.
+      """
+
+    When I run `wp option pluck wp_cli_test test_mode`
+    Then STDOUT should be:
+      """
+      1
+      """

tests/RecursiveDataStructureTraverserTest.php

@@ -86,6 +86,19 @@ function it_can_set_a_nested_object_value() {
 		$this->assertEquals( 'new', $object->foo->bar );
 	}
 
+	/** @test */
+	function it_can_update_an_integer_object_value() {
+		$object = (object) array(
+			'test_mode' => 0,
+		);
+		$this->assertEquals( 0, $object->test_mode );
+
+		$traverser = new RecursiveDataStructureTraverser( $object );
+		$traverser->update( array( 'test_mode' ), 1 );
+
+		$this->assertEquals( 1, $object->test_mode );
+	}
+
 	/** @test */
 	function it_can_delete_a_nested_array_value() {
 		$array = array(