From bf48787268d0cc8c44b7cb37b4738f51d786835a Mon Sep 17 00:00:00 2001
From: Valeriy Shnurovoy <_val@rambler.ru>
Date: Fri, 7 Feb 2025 11:31:03 +0200
Subject: [PATCH] Hp 2250/fix behat test at billing mrdp (#94)

* HP-2250/Fix_behat_test_at_billing-mrdp

* HP-2250/Fixed convert unit in progressive price

---------

Co-authored-by: Drahma <drahma@hiqdev.com>
---
 src/price/ProgressivePrice.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/price/ProgressivePrice.php b/src/price/ProgressivePrice.php
index baabf712..5de7d1b3 100644
--- a/src/price/ProgressivePrice.php
+++ b/src/price/ProgressivePrice.php
@@ -49,10 +49,10 @@ public function getThresholds(): ProgressivePriceThresholdList
      */
     public function calculateUsage(QuantityInterface $quantity): ?QuantityInterface
     {
-        $usage = $quantity->subtract($this->prepaid);
+        $usage = $quantity->convert($this->prepaid->getUnit())->subtract($this->prepaid);
 
         if ($usage->isPositive()) {
-            return $quantity;
+            return $usage;
         }
 
         return Quantity::create($this->prepaid->getUnit()->getName(), 0);