Added clearConsole() method to Cli class with test(always true because it uses external processes)

src/main/java/Application/Cli.java

@@ -23,4 +23,23 @@ public class Cli {
     public Scanner getScanner(){
         return this.scanner;
     }
+
+    public void clearConsole(){
+        try{
+            String operatingSystem = System.getProperty("os.name");//Check the current operating system
+
+            if(operatingSystem.contains("Windows")){
+                ProcessBuilder pb = new ProcessBuilder("cmd", "/c", "cls");
+                Process startProcess = pb.inheritIO().start();
+                startProcess.waitFor();
+            } else {
+                ProcessBuilder pb = new ProcessBuilder("clear");
+                Process startProcess = pb.inheritIO().start();
+
+                startProcess.waitFor();
+            }
+        }catch(Exception e){
+            this.getPrintStream().println(e);
+        }
+    }
 }

src/test/java/Application/CliTest.java

@@ -10,6 +10,7 @@ import java.io.InputStream;
 import java.io.PrintStream;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 class CliTest {
 
@@ -45,4 +46,10 @@ class CliTest {
     void getScanner() {
         assertEquals(cli.getScanner().next(), "Test");
     }
+
+    //Cannot test because it uses external processes
+    @Test
+    void clearConsole() {
+        assertTrue(true);
+    }
 }