add unit test

tests/phpunit/includes/openid-connect-generic-client-wrapper_test.php

@@ -17,6 +17,8 @@ class OpenID_Connect_Generic_Client_Wrapper_Test extends WP_UnitTestCase {
 	 */
 	public function setUp(): void {
 
+		$this->client_wrapper = OpenID_Connect_Generic::instance()->client_wrapper;
+
 		parent::setUp();
 
 	}
@@ -43,4 +45,26 @@ public function test_plugin_client_wrapper_alternate_redirect_uri_parse_request(
 
 	}
 
+	public function test_plugin_client_wrapper_remember_me() {
+		// Set the remember me option to true
+		add_filter( 'openid-connect-generic-remember-me', '__return_true' );
+
+		// Create a user and log in using the login function of the client wrapper
+		$user = $this->factory()->user->create_and_get( array( 'user_login' => 'test-remember-me-user' ) );
+		$this->client_wrapper->login_user( $user, array(
+			'expires_in' => 14 * HOUR_IN_SECONDS, // This does not influence the length of the cookie
+		), array(), array(), '' );
+
+		// Retrieve the session tokens
+		$manager = WP_Session_Tokens::get_instance( $user->ID );
+		$token = $manager->get_all()[0];
+
+		// Assert if the token is set to expire in 14 days, with some seconds as a timing margin
+		$this->assertGreaterThan( time() + 13 * DAY_IN_SECONDS, $token['expiration'] );
+		$this->assertLessThan( time() + 15 * DAY_IN_SECONDS, $token['expiration'] );
+
+		// Reset the remember me option
+		remove_filter( 'openid-connect-generic-remember-me', '__return_true' );
+	}
+
 }