diff --git a/payment/tests/helper_test.php b/payment/tests/helper_test.php
index f0700fe9ca1..80b3c547c8a 100644
--- a/payment/tests/helper_test.php
+++ b/payment/tests/helper_test.php
@@ -169,7 +169,7 @@ class helper_test extends advanced_testcase {
      * @param float $surcharge
      * @param string $expected
      */
-    public function test_get_rounded_cost(float $amount, string $currency, float $surcharge, string $expected) {
+    public function test_get_rounded_cost(float $amount, string $currency, float $surcharge, float $expected) {
         $this->assertEquals($expected, helper::get_rounded_cost($amount, $currency, $surcharge));
     }
 
@@ -183,6 +183,20 @@ class helper_test extends advanced_testcase {
      * @param string $expected
      */
     public function test_get_cost_as_string(float $amount, string $currency, float $surcharge, string $expected) {
+        // Some old ICU versions have a bug, where they don't follow the CLDR and they are
+        // missing the non-breaking-space between the currency abbreviation and the value.
+        // i.e. it returns AUD50 instead of AU\xc2\xa050). See the following issues @ ICU:
+        // - https://unicode-org.atlassian.net/browse/ICU-6560
+        // - https://unicode-org.atlassian.net/browse/ICU-8853
+        // - https://unicode-org.atlassian.net/browse/ICU-8840
+        // It has been detected that versions prior to ICU-61.1 / ICU-62.1 come with this
+        // problem. Noticeably Travis images (as of December 2021) use buggy ICU-60.1.
+        // So, here, we are going to dynamically verify the behaviour and skip the
+        // test when buggy one is found. No need to apply this to code as dar as the real
+        // formatting is not critical for the functionality (just small glitch).
+        if ('IRR5' === (new \NumberFormatter('en-AU', \NumberFormatter::CURRENCY))->formatCurrency(5, 'IRR')) {
+            $this->markTestSkipped('Old ICU libraries behavior (ICU < 62), skipping this tests');
+        }
         $this->assertEquals($expected, helper::get_cost_as_string($amount, $currency, $surcharge));
     }
 }
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 0a152257a9d..8b06d4059a1 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -202,6 +202,9 @@
     <testsuite name="core_contentbank_testsuite">
       <directory suffix="_test.php">contentbank/tests</directory>
     </testsuite>
+    <testsuite name="core_payment_testsuite">
+      <directory suffix="_test.php">payment/tests</directory>
+    </testsuite>
 
     <!--Plugin suites: use admin/tool/phpunit/cli/util.php to build phpunit.xml from
         phpunit.xml.dist with up-to-date list of plugins in current install-->