diff --git a/tests/Unit/Import/Converter/AmountTest.php b/tests/Unit/Import/Converter/AmountTest.php
index a50aa636f3..d1bf70c520 100644
--- a/tests/Unit/Import/Converter/AmountTest.php
+++ b/tests/Unit/Import/Converter/AmountTest.php
@@ -139,6 +139,17 @@ class AmountTest extends TestCase
             '63 5212.4440'            => '635212.444',
             '163 5219.1634567898'     => '1635219.1634567898',
             '444 163 5219.1634567898' => '4441635219.1634567898',
+            '-0.34918323'             => '-0.34918323',
+            '0.208'                   => '0.208',
+            '-0.15'                   => '-0.15',
+            '-0.03881677'             => '-0.03881677',
+            '0.33'                    => '0.33',
+            '-0.1'                    => '-0.1',
+            '0.01124'                 => '0.01124',
+            '-0.01124'                => '-0.01124',
+            '0.115'                   => '0.115',
+            '-0.115'                  => '-0.115',
+            '1.33'                    => '1.33',
         ];
         foreach ($values as $value => $expected) {
             $converter = new Amount;