Tests: Add more invalid IP test cases and @covers to `Tests_Functio…

…ns_Anonymization`.

Adds a few more invalid IP test cases.

Adds extra `@covers` tag for the two functions which are testing the `wp_privacy_anonymize_ip()` function.

(At class level, the `wp_privacy_anonymize_data()` is set as covered).

Follow-up to [42971].

Props jrf, hellofromTonya.
See #53363.

git-svn-id: https://develop.svn.wordpress.org/trunk@51792 602fd350-edb4-49c9-b593-d223f7449a82

tests/phpunit/tests/functions/anonymization.php

@@ -26,6 +26,8 @@ class Tests_Functions_Anonymization extends WP_UnitTestCase {
 	 * @ticket 41083
 	 * @ticket 43545
 	 *
+	 * @covers ::wp_privacy_anonymize_ip
+	 *
 	 * @param string $raw_ip          Raw IP address.
 	 * @param string $expected_result Expected result.
 	 */
@@ -56,6 +58,22 @@ public function data_wp_privacy_anonymize_ip() {
 				null,
 				'0.0.0.0',
 			),
+			array(
+				false,
+				'0.0.0.0',
+			),
+			array(
+				true,
+				'0.0.0.0',
+			),
+			array(
+				0,
+				'0.0.0.0',
+			),
+			array(
+				1,
+				'0.0.0.0',
+			),
 			array(
 				'',
 				'0.0.0.0',
@@ -166,6 +184,8 @@ public function data_wp_privacy_anonymize_ip() {
 	 * @requires function inet_ntop
 	 * @requires function inet_pton
 	 *
+	 * @covers ::wp_privacy_anonymize_ip
+	 *
 	 * @param string $raw_ip          Raw IP address.
 	 * @param string $expected_result Expected result.
 	 */