Fix test naming

The toIp tests with null / empty string are still valid
Referring to docs from InetAddress.getByName()
"If the host is null or host.length() is equal to zero,
then an InetAddress representing an address of the loopback interface is returned."

Author: bhapas

modules/ingest-common/src/test/java/org/elasticsearch/ingest/common/CefProcessorTests.java

@@ -1044,36 +1044,24 @@ public void testEUI64ToMacAddressWithOutSeparators() {
         assertEquals("00:0D:60:FF:FE:AF:1B:61", result);
     }
 
-    public void toIP_validIPv4Address() {
+    public void testtoIPValidIPv4Address() {
         CefParser parser = new CefParser(ZoneId.of("UTC"), true);
         String result = parser.toIP("192.168.1.1");
         assertEquals("192.168.1.1", result);
     }
 
-    public void toIP_validIPv6Address() {
+    public void testToIPValidIPv6Address() {
         CefParser parser = new CefParser(ZoneId.of("UTC"), true);
         String result = parser.toIP("2001:0db8:85a3:0000:0000:8a2e:0370:7334");
         assertEquals("2001:db8:85a3::8a2e:370:7334", result);
     }
 
-    public void toIP_invalidIPAddress() {
+    public void testToIPInvalidIPAddress() {
         CefParser parser = new CefParser(ZoneId.of("UTC"), true);
         IllegalArgumentException exception = assertThrows(IllegalArgumentException.class, () -> parser.toIP("invalid_ip"));
         assertEquals("Invalid IP address format", exception.getMessage());
     }
 
-    public void toIP_emptyString() {
-        CefParser parser = new CefParser(ZoneId.of("UTC"), true);
-        IllegalArgumentException exception = assertThrows(IllegalArgumentException.class, () -> parser.toIP(""));
-        assertEquals("Invalid IP address format", exception.getMessage());
-    }
-
-    public void toIP_nullString() {
-        CefParser parser = new CefParser(ZoneId.of("UTC"), true);
-        IllegalArgumentException exception = assertThrows(IllegalArgumentException.class, () -> parser.toIP(null));
-        assertEquals("Invalid IP address format", exception.getMessage());
-    }
-
     private static void assertMapsEqual(Map<?, ?> actual, Map<?, ?> expected) {
         innerAssertMapsEqual(actual, expected, "");
     }