increase amount of adjacent codes in TOTP mode (10 minutes at the default of a 30 second period)

Author: codemasher

src/AuthenticatorOptionsTrait.php

@@ -164,7 +164,7 @@ protected function set_mode(string $mode):void{
 	 */
 	protected function set_adjacent(int $adjacent):void{
 		// limit to a sane amount
-		if($adjacent < 0 || $adjacent > 10){
+		if($adjacent < 0 || $adjacent > 20){
 			throw new InvalidArgumentException('Invalid number of adjacent codes: '.$adjacent);
 		}
 

tests/AuthenticatorOptionsTest.php

@@ -81,7 +81,7 @@ public function testSetModeException():void{
 	}
 
 	public function testSetAdjacent():void{
-		for($adjacent = 0; $adjacent <= 10; $adjacent++){
+		for($adjacent = 0; $adjacent <= 20; $adjacent++){
 			$this->options->adjacent = $adjacent;
 			$this::assertSame($adjacent, $this->options->adjacent);
 		}