8255584: HttpPrincipal::getName returns incorrect name

Reviewed-by: dfuchs

src/jdk.httpserver/share/classes/com/sun/net/httpserver/HttpPrincipal.java

@@ -75,7 +75,7 @@ public boolean equals(Object another) {
      * @return the contents of this principal in the form realm:username
      */
     public String getName() {
-        return username;
+        return String.format("%s:%s", realm, username);
     }
 
     /**

test/jdk/com/sun/net/httpserver/HttpPrincipalTest.java

@@ -36,9 +36,13 @@
 public class HttpPrincipalTest {
 
     @Test
-    public void TestGetters() {
+    public void testGetters() {
         var principal = new HttpPrincipal("test", "123");
+
         assertEquals(principal.getUsername(), "test");
         assertEquals(principal.getRealm(), "123");
+        assertEquals(principal.getName(), "123:test");
+        assertEquals(principal.toString(), principal.getName());
+        assertEquals(("test"+"123").hashCode(), principal.hashCode());
     }
 }