diff --git a/src/test/java/hs/fulda/de/ci/exam/project/AccountServiceTest.java b/src/test/java/hs/fulda/de/ci/exam/project/AccountServiceTest.java
index 90d1d69..e80e849 100644
--- a/src/test/java/hs/fulda/de/ci/exam/project/AccountServiceTest.java
+++ b/src/test/java/hs/fulda/de/ci/exam/project/AccountServiceTest.java
@@ -2,10 +2,10 @@ package hs.fulda.de.ci.exam.project;
 
 import org.junit.Before;
 import org.junit.Test;
+import org.mockito.ArgumentCaptor;
 import org.mockito.InOrder;
 
-import static org.junit.jupiter.api.Assertions.assertFalse;
-import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.*;
 import static org.mockito.ArgumentMatchers.anyString;
 import static org.mockito.Mockito.*;
 
@@ -68,6 +68,19 @@ public class AccountServiceTest {
         verify(accountRepository).findById(DISABLED_USER.getId());
         verify(passwordEncoder, never()).encode(anyString());
     }
+
+    @Test
+    public void shouldBeInvalidForInvalidPassword() {
+        boolean accountIsValid =
+                accountService.isValidAccount(ENABLED_USER.getId(), "invalid");
+        assertFalse(accountIsValid);
+
+        ArgumentCaptor<String> passwordCaptor = ArgumentCaptor.forClass(String.class);
+
+        verify(passwordEncoder).encode(passwordCaptor.capture());
+        assertEquals("invalid", passwordCaptor.getValue());
+    }
+
     private AccountRepository createAccountRepository() {
         AccountRepository mock = mock(AccountRepository.class);
         when(mock.findById(ENABLED_USER.getId())).thenReturn(ENABLED_USER);