Логика проверки ключа из KeyConfirmationForm вынесена в отдельный валидатор

У EmailActivationFixture зафиксирован стандартный путь к файлу данных

tests/codeception/common/_support/ProtectedCaller.php

@@ -0,0 +1,17 @@
+<?php
+namespace tests\codeception\common\_support;
+
+use Codeception\Module;
+use ReflectionClass;
+
+trait ProtectedCaller {
+
+    protected function callProtected($object, string $function, ...$args) {
+        $class = new ReflectionClass($object);
+        $method = $class->getMethod($function);
+        $method->setAccessible(true);
+
+        return $method->invokeArgs($object, $args);
+    }
+
+}

tests/codeception/common/fixtures/EmailActivationFixture.php

@@ -8,6 +8,8 @@ class EmailActivationFixture extends ActiveFixture {
 
     public $modelClass = EmailActivation::class;
 
+    public $dataFile = '@tests/codeception/common/fixtures/data/email-activations.php';
+
     public $depends = [
         AccountFixture::class,
     ];