implemented userName for new credentials

src/main/java/Vault.java

@@ -11,6 +11,7 @@ public class Vault implements VaultInterface {
     public boolean haveCapitals;
     public boolean hasSpecialChars;
     public boolean hasNumbers;
+    public String userName;
     InputStream inputS = System.in;
     OutputStream outputS = System.out;
 
@@ -61,6 +62,13 @@ public class Vault implements VaultInterface {
 
 
     public void addCredential(){
+        println("Add user name");
+
+        Scanner scan = new Scanner(inputS);
+        String input = scan.nextLine();
+
+        userName = input;
+
 
     }
 

src/test/java/VaultTest.java

@@ -28,7 +28,17 @@ public class VaultTest {
     }
 
     @Test
-    void addCredential() {vlt.addCredential();}
+    void addCredentialTest() {
+        String expected = "user";
+        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+        vlt.inputS = new ByteArrayInputStream(expected.getBytes(StandardCharsets.UTF_8));
+        vlt.outputS = outputStream;
+        vlt.addCredential();
+
+        assertTrue(outputStream.toString().startsWith("Add"));
+        assertEquals(expected, vlt.userName);
+
+    }
 
     @Test
     void showCredential() {vlt.showCredential();}