Ajax: Add unit tests for wp_ajax_delete_page()

tests/phpunit/tests/admin/includes/ajax-actions/deletePage.php

@@ -0,0 +1,168 @@
+<?php
+
+/**
+ * Admin Ajax functions to be tested.
+ */
+require_once ABSPATH . 'wp-admin/includes/ajax-actions.php';
+
+/**
+ * Testing wp_ajax_delete_page() functionality.
+ *
+ * @package WordPress
+ * @subpackage UnitTests
+ * @since 3.1.0
+ *
+ * @group ajax
+ *
+ * @covers ::wp_ajax_delete_page
+ */
+class Tests_wp_ajax_delete_page extends WP_Ajax_UnitTestCase {
+
+	/**
+	 * Administrator user ID.
+	 *
+	 * @var int
+	 */
+	protected static $admin_id;
+
+	/**
+	 * Subscriber user ID.
+	 *
+	 * @var int
+	 */
+	protected static $subscriber_id;
+
+	/**
+	 * Setup test fixtures.
+	 *
+	 * @param WP_UnitTest_Factory $factory
+	 */
+	public static function wpSetUpBeforeClass( WP_UnitTest_Factory $factory ): void {
+		self::$admin_id      = $factory->user->create( array( 'role' => 'administrator' ) );
+		self::$subscriber_id = $factory->user->create( array( 'role' => 'subscriber' ) );
+	}
+
+	/**
+	 * Setup before each test method.
+	 */
+	public function set_up(): void {
+		parent::set_up();
+		add_action( 'admin_init', array( $this, 'hook_ajax_handler' ), 1 );
+	}
+
+	/**
+	 * Hooks the AJAX handler to admin_init.
+	 */
+	public function hook_ajax_handler(): void {
+		if ( isset( $_POST['action'] ) && 'delete-page' === $_POST['action'] ) {
+			wp_ajax_delete_page( 'delete-page' );
+		}
+	}
+
+	/**
+	 * Tests successful page deletion.
+	 *
+	 * @ticket 65252
+	 */
+	public function test_delete_page_success(): void {
+		$factory = self::factory();
+		wp_set_current_user( self::$admin_id );
+
+		$page_id = $factory->post->create( array( 'post_type' => 'page' ) );
+		wp_trash_post( $page_id );
+
+		$_POST = array(
+			'action'      => 'delete-page',
+			'id'          => $page_id,
+			'_ajax_nonce' => wp_create_nonce( "delete-page_$page_id" ),
+		);
+
+		try {
+			$this->_handleAjax( 'delete-page' );
+		} catch ( WPAjaxDieStopException $e ) {
+			$this->assertSame( '1', $e->getMessage(), 'AJAX response should be 1 (success).' );
+		} catch ( WPAjaxDieContinueException $e ) {
+			$this->assertSame( '1', $e->getMessage(), 'AJAX response should be 1 (success).' );
+		}
+
+		$this->assertNull( get_post( $page_id ), 'Page should be deleted.' );
+	}
+
+	/**
+	 * Tests page deletion failure due to invalid nonce.
+	 *
+	 * @ticket 65252
+	 */
+	public function test_delete_page_invalid_nonce(): void {
+		$factory = self::factory();
+		wp_set_current_user( self::$admin_id );
+
+		$page_id = $factory->post->create( array( 'post_type' => 'page' ) );
+		wp_trash_post( $page_id );
+
+		$_POST = array(
+			'action'      => 'delete-page',
+			'id'          => $page_id,
+			'_ajax_nonce' => 'invalid-nonce',
+		);
+
+		$this->expectException( WPAjaxDieStopException::class );
+		$this->expectExceptionMessage( '-1' );
+
+		$this->_handleAjax( 'delete-page' );
+	}
+
+	/**
+	 * Tests page deletion failure due to insufficient permissions.
+	 *
+	 * @ticket 65252
+	 */
+	public function test_delete_page_insufficient_permissions(): void {
+		$factory = self::factory();
+		wp_set_current_user( self::$subscriber_id );
+
+		$page_id = $factory->post->create( array( 'post_type' => 'page' ) );
+		wp_trash_post( $page_id );
+
+		$_POST = array(
+			'action'      => 'delete-page',
+			'id'          => $page_id,
+			'_ajax_nonce' => wp_create_nonce( "delete-page_$page_id" ),
+		);
+
+		try {
+			$this->_handleAjax( 'delete-page' );
+		} catch ( WPAjaxDieStopException $e ) {
+			$this->assertSame( '-1', $e->getMessage(), 'AJAX response should be -1 (insufficient permissions).' );
+		} catch ( WPAjaxDieContinueException $e ) {
+			$this->assertSame( '-1', $e->getMessage(), 'AJAX response should be -1 (insufficient permissions).' );
+		}
+
+		$this->assertNotNull( get_post( $page_id ), 'Page should NOT be deleted.' );
+	}
+
+	/**
+	 * Tests page deletion with non-existent ID.
+	 *
+	 * @ticket 65252
+	 */
+	public function test_delete_page_non_existent_id(): void {
+		wp_set_current_user( self::$admin_id );
+
+		$page_id = 99999;
+
+		$_POST = array(
+			'action'      => 'delete-page',
+			'id'          => $page_id,
+			'_ajax_nonce' => wp_create_nonce( "delete-page_$page_id" ),
+		);
+
+		try {
+			$this->_handleAjax( 'delete-page' );
+		} catch ( WPAjaxDieStopException $e ) {
+			$this->assertSame( '-1', $e->getMessage(), 'AJAX response should be -1 for non-existent page (permission check fails first).' );
+		} catch ( WPAjaxDieContinueException $e ) {
+			$this->assertSame( '-1', $e->getMessage(), 'AJAX response should be -1 for non-existent page (permission check fails first).' );
+		}
+	}
+}