implemented show credential via name functionality

src/main/java/Vault.java

@@ -94,6 +94,9 @@ public class Vault implements VaultInterface {
         if(str.matches("[0-9]+")) {
             isInt = true;
             //getCredentialsViaId(Integer.parseInt(str));
+        } else {
+            isInt = false;
+            //getCredentialsViaName(str);
         }
 
     }

src/test/java/VaultTest.java

@@ -93,6 +93,13 @@ public class VaultTest {
 
         assertTrue(outputStream.toString().contains("Type"));
         assertTrue(vlt.isInt);
+
+        vlt.outputS = outputStream;
+        vlt.inputS = new ByteArrayInputStream("peter".getBytes(StandardCharsets.UTF_8));
+        vlt.showCredential();
+
+        assertTrue(outputStream.toString().contains("Type"));
+        assertFalse(vlt.isInt);
     }
 
     @Test