implemented show credential via ID functionality

src/main/java/Vault.java

@@ -14,6 +14,7 @@ public class Vault implements VaultInterface {
     public boolean credentialM;
     public String userName;
     public String password;
+    public boolean isInt = false;
     InputStream inputS = System.in;
     OutputStream outputS = System.out;
 
@@ -85,6 +86,15 @@ public class Vault implements VaultInterface {
     }
 
     public void showCredential(){
+        Scanner scan = new Scanner(inputS);
+        println("Type in ID or username");
+
+        String str = scan.nextLine();
+
+        if(str.matches("[0-9]+")) {
+            isInt = true;
+            //getCredentialsViaId(Integer.parseInt(str));
+        }
 
     }
 

src/test/java/VaultTest.java

@@ -85,7 +85,15 @@ public class VaultTest {
     }
 
     @Test
-    void showCredential() {vlt.showCredential();}
+    void showCredentialTest() {
+        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+        vlt.outputS = outputStream;
+        vlt.inputS = new ByteArrayInputStream("1".getBytes(StandardCharsets.UTF_8));
+        vlt.showCredential();
+
+        assertTrue(outputStream.toString().contains("Type"));
+        assertTrue(vlt.isInt);
+    }
 
     @Test
     void getAsJson() {vlt.getAsJson();}