Ajax: Add unit tests for wp_ajax_delete_link()

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

@@ -0,0 +1,154 @@
+<?php
+
+/**
+ * Admin Ajax functions to be tested.
+ */
+require_once ABSPATH . 'wp-admin/includes/ajax-actions.php';
+
+/**
+ * Testing wp_ajax_delete_link() functionality.
+ *
+ * @package WordPress
+ * @subpackage UnitTests
+ * @since 3.1.0
+ *
+ * @group ajax
+ *
+ * @covers ::wp_ajax_delete_link
+ */
+class Tests_wp_ajax_delete_link 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 = $factory->user->create( array( 'role' => 'subscriber' ) );
+	}
+
+	/**
+	 * Setup before each test method.
+	 */
+	public function set_up(): void {
+		parent::set_up();
+		update_option( 'link_manager_enabled', 1 );
+	}
+
+	/**
+	 * Tests successful link deletion.
+	 *
+	 * @ticket 65252
+	 */
+	public function test_delete_link_success(): void {
+		wp_set_current_user( self::$admin_id );
+
+		$link_id = self::factory()->bookmark->create();
+
+		$_POST = array(
+			'id'          => $link_id,
+			'_ajax_nonce' => wp_create_nonce( "delete-bookmark_$link_id" ),
+		);
+
+		try {
+			$this->_handleAjax( 'delete-link' );
+		} catch ( WPAjaxDieStopException $e ) {
+			// Expect success.
+			$this->_last_response = $e->getMessage();
+		} catch ( WPAjaxDieContinueException $e ) {
+			// Expect success.
+		}
+
+		$this->assertSame( '1', $this->_last_response );
+		$this->assertNull( get_bookmark( $link_id ), 'Link should be deleted.' );
+	}
+
+	/**
+	 * Tests link deletion failure due to invalid nonce.
+	 *
+	 * @ticket 65252
+	 */
+	public function test_delete_link_invalid_nonce(): void {
+		wp_set_current_user( self::$admin_id );
+
+		$link_id = self::factory()->bookmark->create();
+
+		$_POST = array(
+			'id'          => $link_id,
+			'_ajax_nonce' => 'invalid-nonce',
+		);
+
+		try {
+			$this->_handleAjax( 'delete-link' );
+			$this->fail( 'Expected link deletion to stop due to an invalid nonce.' );
+		} catch ( WPAjaxDieStopException $e ) {
+			$this->assertSame( '-1', $e->getMessage() );
+		}
+
+		$this->assertNotNull( get_bookmark( $link_id ), 'Link should not be deleted when the nonce is invalid.' );
+	}
+
+	/**
+	 * Tests link deletion failure due to insufficient permissions.
+	 *
+	 * @ticket 65252
+	 */
+	public function test_delete_link_insufficient_permissions(): void {
+		wp_set_current_user( self::$subscriber_id );
+
+		$link_id = self::factory()->bookmark->create();
+
+		$_POST = array(
+			'id'          => $link_id,
+			'_ajax_nonce' => wp_create_nonce( "delete-bookmark_$link_id" ),
+		);
+
+		$this->expectException( WPAjaxDieStopException::class );
+		$this->expectExceptionMessage( '-1' );
+
+		$this->_handleAjax( 'delete-link' );
+	}
+
+	/**
+	 * Tests link deletion with non-existent ID.
+	 *
+	 * @ticket 65252
+	 */
+	public function test_delete_link_non_existent_id(): void {
+		wp_set_current_user( self::$admin_id );
+
+		$link_id = 99999;
+
+		$_POST = array(
+			'id'          => $link_id,
+			'_ajax_nonce' => wp_create_nonce( "delete-bookmark_$link_id" ),
+		);
+
+		try {
+			$this->_handleAjax( 'delete-link' );
+		} catch ( WPAjaxDieStopException $e ) {
+			// Expect success.
+			$this->_last_response = $e->getMessage();
+		} catch ( WPAjaxDieContinueException $e ) {
+			// Expect success.
+		}
+
+		$this->assertSame( '1', $this->_last_response );
+		$this->assertNull( get_bookmark( $link_id ), 'no Link and no error.' );
+	}
+}