Run tests with WP_DEBUG enabled, such as not to need to include unit-…

…test customisations to plugin.

.wp-env.json

@@ -4,6 +4,7 @@
   "env": {
     "tests": {
       "config": {
+        "WP_DEBUG": true,
         "WP_TESTS_EMAIL": "[email protected]",
         "WP_TESTS_DOMAIN": "example.org",
         "WP_SITEURL": "https://example.org",

class-two-factor-core.php

@@ -209,7 +209,7 @@ public static function get_providers() {
 	 * @return array
 	 */
 	public static function enable_dummy_method_for_debug( $methods ) {
-		if ( ! self::is_wp_debug() && ! self::is_tests() ) {
+		if ( ! self::is_wp_debug() ) {
 			unset( $methods['Two_Factor_Dummy'] );
 		}
 
@@ -225,15 +225,6 @@ protected static function is_wp_debug() {
 		return ( defined( 'WP_DEBUG' ) && WP_DEBUG );
 	}
 
-	/**
-	 * Check if we're running within Unit Tests.
-	 *
-	 * @return boolean
-	 */
-	protected static function is_tests() {
-		return defined( 'DIR_TESTDATA' ) && function_exists( 'tests_add_filter' );
-	}
-
 	/**
 	 * Get the user settings page URL.
 	 *