[Backport] magento/magento2#12396: Total Amount cart rule without tax

app/code/Magento/SalesRule/Model/Rule/Condition/Address.php

@@ -58,6 +58,7 @@ public function __construct(
     public function loadAttributeOptions()
     {
         $attributes = [
+            'base_subtotal_with_discount' => __('Subtotal (Excl. Tax)'),
             'base_subtotal' => __('Subtotal'),
             'total_qty' => __('Total Items Quantity'),
             'weight' => __('Total Weight'),

dev/tests/functional/lib/Magento/Mtf/Client/Element/ConditionsElement.php

@@ -195,6 +195,13 @@ class ConditionsElement extends SimpleElement
      */
     protected $exception;
 
+    /**
+     * Condition option text selector.
+     *
+     * @var string
+     */
+    private $conditionOptionTextSelector = '//option[normalize-space(text())="%s"]';
+
     /**
      * @inheritdoc
      */
@@ -282,10 +289,16 @@ protected function addCondition($type, ElementInterface $context)
         $count = 0;
 
         do {
-            $newCondition->find($this->addNew, Locator::SELECTOR_XPATH)->click();
-
             try {
-                $newCondition->find($this->typeNew, Locator::SELECTOR_XPATH, 'select')->setValue($type);
+                $specificType = $newCondition->find(
+                    sprintf($this->conditionOptionTextSelector, $type),
+                    Locator::SELECTOR_XPATH
+                )->isPresent();
+                $newCondition->find($this->addNew, Locator::SELECTOR_XPATH)->click();
+                $condition = $specificType
+                    ? $newCondition->find($this->typeNew, Locator::SELECTOR_XPATH, 'selectcondition')
+                    : $newCondition->find($this->typeNew, Locator::SELECTOR_XPATH, 'select');
+                $condition->setValue($type);
                 $isSetType = true;
             } catch (\PHPUnit_Extensions_Selenium2TestCase_WebDriverException $e) {
                 $isSetType = false;

dev/tests/functional/lib/Magento/Mtf/Client/Element/SelectconditionElement.php

@@ -0,0 +1,20 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+declare(strict_types=1);
+
+namespace Magento\Mtf\Client\Element;
+
+/**
+ * @inheritdoc
+ */
+class SelectconditionElement extends SelectElement
+{
+    /**
+     * @inheritdoc
+     */
+    protected $optionByValue = './/option[normalize-space(.)=%s]';
+}