diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 99e7afd..9969610 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -43,18 +43,12 @@ jobs:
       fail-fast: false
       matrix:
         database: ['pgsql', 'mariadb']
-        moodle-branch: ['MOODLE_39_STABLE', 'MOODLE_38_STABLE', 'MOODLE_37_STABLE']
+        moodle-branch: ['MOODLE_39_STABLE']
         node: ['14.15.1']
         php: ['7.2', '7.3']
         include:
           - {moodle-branch: 'MOODLE_35_STABLE', php: '7.1', node: '14.15.1', database: 'mariadb'}
           - {moodle-branch: 'MOODLE_35_STABLE', php: '7.2', node: '14.15.1', database: 'mariadb'}
-          - {moodle-branch: 'MOODLE_37_STABLE', php: '7.1', node: '14.15.1', database: 'mariadb'}
-          - {moodle-branch: 'MOODLE_37_STABLE', php: '7.1', node: '14.15.1', database: 'pgsql'}
-          - {moodle-branch: 'MOODLE_38_STABLE', php: '7.1', node: '14.15.1', database: 'mariadb'}
-          - {moodle-branch: 'MOODLE_38_STABLE', php: '7.1', node: '14.15.1', database: 'pgsql'}
-          - {moodle-branch: 'MOODLE_38_STABLE', php: '7.4', node: '14.15.1', database: 'mariadb'}
-          - {moodle-branch: 'MOODLE_38_STABLE', php: '7.4', node: '14.15.1', database: 'pgsql'}
           - {moodle-branch: 'MOODLE_39_STABLE', php: '7.4', node: '14.15.1', database: 'mariadb'}
           - {moodle-branch: 'MOODLE_39_STABLE', php: '7.4', node: '14.15.1', database: 'pgsql'}
 
diff --git a/auth.php b/auth.php
index b9c0e4c..4bf8c85 100644
--- a/auth.php
+++ b/auth.php
@@ -58,7 +58,6 @@ class auth_plugin_outage extends auth_plugin_base {
     /**
      * Always returns false (password wrong or user does not exist).
      *
-     * @inheritdoc PHPMD will not warn about unused parameters if overriding.
      * @param string $username Not used in this plugin.
      * @param string $password Not used in this plugin.
      * @return bool False
diff --git a/checkfinished.php b/checkfinished.php
index e090ad5..f7e15b9 100644
--- a/checkfinished.php
+++ b/checkfinished.php
@@ -26,7 +26,9 @@
 use auth_outage\dml\outagedb;
 
 define('NO_MOODLE_COOKIES', true);
+ // @codingStandardsIgnoreStart
 header('Cache-Control: public, max-age=10,s-maxage=10');
+ // @codingStandardsIgnoreEnd
 define('NO_AUTH_OUTAGE', true);
 
 require_once(__DIR__.'/../../config.php');
diff --git a/classes/local/controllers/infopage.php b/classes/local/controllers/infopage.php
index 003750c..eb7b0dc 100644
--- a/classes/local/controllers/infopage.php
+++ b/classes/local/controllers/infopage.php
@@ -93,7 +93,6 @@ class infopage {
     /**
      * Generates and outputs the HTML for the info page.
      * @uses    redirect
-     * @SuppressWarnings(PHPMD.UnusedLocalVariable) $viewbag is used inside 'require'.
      */
     public function output() {
         global $PAGE, $CFG, $OUTPUT;
diff --git a/classes/local/controllers/maintenance_static_page.php b/classes/local/controllers/maintenance_static_page.php
index 3b334fe..41def14 100644
--- a/classes/local/controllers/maintenance_static_page.php
+++ b/classes/local/controllers/maintenance_static_page.php
@@ -122,6 +122,7 @@ class maintenance_static_page {
     }
 
     /**
+     * Gets generator io.
      * @return maintenance_static_page_io
      */
     public function get_io() {
diff --git a/classes/local/controllers/maintenance_static_page_generator.php b/classes/local/controllers/maintenance_static_page_generator.php
index 986750a..75abc12 100644
--- a/classes/local/controllers/maintenance_static_page_generator.php
+++ b/classes/local/controllers/maintenance_static_page_generator.php
@@ -95,6 +95,7 @@ class maintenance_static_page_generator {
     }
 
     /**
+     * Gets maintenance_static_page_io.
      * @return maintenance_static_page_io
      */
     public function get_io() {
@@ -252,7 +253,7 @@ class maintenance_static_page_generator {
     /**
      * Fetches all elements based on the given selector.
      *
-     * @param $selector
+     * @param string $selector element selector
      *
      * @return DOMElement[]
      */
@@ -270,7 +271,7 @@ class maintenance_static_page_generator {
     /**
      * Fetch all elements which contains the given class.
      *
-     * @param $class
+     * @param string $class element class
      *
      * @return DOMElement[]
      */
@@ -286,6 +287,9 @@ class maintenance_static_page_generator {
         return $matches;
     }
 
+    /**
+     * Adds meta refresh to head element.
+     */
     private function add_meta_refresh() {
         $meta = $this->dom->createElement('meta');
         $meta->setAttribute('http-equiv', 'refresh');
@@ -298,6 +302,7 @@ class maintenance_static_page_generator {
     }
 
     /**
+     * Gets refresh time.
      * @return int
      */
     public function get_refresh_time() {
@@ -305,6 +310,7 @@ class maintenance_static_page_generator {
     }
 
     /**
+     * Sets refresh time.
      * @param int $refreshtime
      */
     public function set_refresh_time($refreshtime) {
diff --git a/classes/local/controllers/maintenance_static_page_io.php b/classes/local/controllers/maintenance_static_page_io.php
index 6ec6e97..5642522 100644
--- a/classes/local/controllers/maintenance_static_page_io.php
+++ b/classes/local/controllers/maintenance_static_page_io.php
@@ -46,7 +46,7 @@ class maintenance_static_page_io {
      * Checks if the given string starts with "http://" or "https://".
      * Also checks for "//" at the start of image, which setting_file_url still uses.
      *
-     * @param $url
+     * @param string $url url string for check
      * @return bool
      */
     public static function is_url($url) {
@@ -82,6 +82,7 @@ class maintenance_static_page_io {
     protected $preview = false;
 
     /**
+     * Sets preview
      * @param boolean $preview
      */
     public function set_preview($preview) {
diff --git a/classes/local/outagelib.php b/classes/local/outagelib.php
index e17dce1..a5526dc 100644
--- a/classes/local/outagelib.php
+++ b/classes/local/outagelib.php
@@ -49,8 +49,10 @@ require_once(__DIR__.'/../../lib.php');
  */
 class outagelib {
 
+    /** Outage start. */
     const OUTAGE_START = '<!-- OUTAGESTART -->';
 
+    /** Outage end. */
     const OUTAGE_END = '<!-- OUTAGEEND -->';
 
     /**
@@ -58,6 +60,10 @@ class outagelib {
      */
     private static $injectcalled = false;
 
+    /**
+     * Fetches page.
+     * @param string $file file to be fetched
+     */
     public static function fetch_page($file) {
         $curl = new curl();
         $contents = $curl->get($file);
@@ -79,6 +85,7 @@ class outagelib {
 
     /**
      * Given a time, usually now, when is the next outage window?
+     * @param int $time time for next window
      */
     public static function get_next_window($time = null) {
 
@@ -202,6 +209,9 @@ class outagelib {
         }
     }
 
+    /**
+     * Checks if wwwroot accessible.
+     */
     private static function check_wwwroot_accessible() {
         global $CFG;
         $result = self::fetch_page($CFG->wwwroot);
@@ -359,9 +369,6 @@ EOT;
      * Generates a warning message in case the plugin is not active and configured.
      *
      * @return string
-     *
-     * @internal stdClass $CFG
-     * @internal bootstrap_renderer $OUTPUT
      */
     public static function generate_plugin_configuration_warning() {
         global $CFG, $OUTPUT, $PAGE;
diff --git a/classes/output/manage/base_table.php b/classes/output/manage/base_table.php
index 8848d40..2366d36 100644
--- a/classes/output/manage/base_table.php
+++ b/classes/output/manage/base_table.php
@@ -48,6 +48,10 @@ class base_table extends flexible_table {
      */
     private static $autoid = 0;
 
+    /**
+     * Creates start time string.
+     * @param string $starttime start time
+     */
     protected static function create_starttime_string($starttime) {
         $absolute = userdate($starttime, get_string('datetimeformat', 'auth_outage'));
         $relative = $starttime - time();
diff --git a/db/uninstall.php b/db/uninstall.php
index 4da1ad7..49d6242 100644
--- a/db/uninstall.php
+++ b/db/uninstall.php
@@ -31,7 +31,6 @@ defined('MOODLE_INTERNAL') || die();
  * @return bool result
  * @throws moodle_exception
  */
-
 function xmldb_auth_outage_uninstall() {
     global $DB;
 
diff --git a/file.php b/file.php
index d534a2d..878424e 100644
--- a/file.php
+++ b/file.php
@@ -57,7 +57,6 @@ header('Accept-Ranges: none');
 
 /**
  * Callback used in bootstrap.
- * @SupressWarnings(PHPMD)
  */
 function auth_outage_bootstrap_callback() {
     // Not using classes as classloader has not been initialized yet. Keep it minimalist.
diff --git a/lib.php b/lib.php
index d403d41..92d88c9 100644
--- a/lib.php
+++ b/lib.php
@@ -41,7 +41,7 @@ function auth_outage_outagelib_prepare_next_outage() {
  *
  * To keep it minimalist it was not added to the outagelib.php class.
  *
- * @param $file string Filename to fetch from sitedata
+ * @param string $file Filename to fetch from sitedata
  * @return string|null Full path to the sitedata file or null if file is not valid.
  */
 function auth_outage_get_climaintenance_resource_file($file) {
diff --git a/tests/behat/behat_auth_outage.php b/tests/behat/behat_auth_outage.php
index ad2c4f4..9ce380c 100644
--- a/tests/behat/behat_auth_outage.php
+++ b/tests/behat/behat_auth_outage.php
@@ -39,7 +39,6 @@ require_once(__DIR__.'/../../../../lib/behat/behat_base.php');
  * @author      Daniel Thee Roperto <daniel.roperto@catalyst-au.net>
  * @copyright   2016 Catalyst IT
  * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @SuppressWarnings(public) Allow as many methods as needed.
  */
 class behat_auth_outage extends behat_base {
     /**
@@ -155,6 +154,7 @@ class behat_auth_outage extends behat_base {
     }
 
     /**
+     * Check if an specific action is not visible.
      * @Then /^I should see an empty settings text area "([^"]*)"$/
      * @param string $name
      */
@@ -163,6 +163,7 @@ class behat_auth_outage extends behat_base {
     }
 
     /**
+     * Check if an specific action is not visible.
      * @When /^I go to the "Outage Settings" page$/
      */
     public function i_go_to_the_outage_settings_page() {
diff --git a/tests/phpunit/base_testcase.php b/tests/phpunit/base_testcase.php
index 307a0c4..b4f030e 100644
--- a/tests/phpunit/base_testcase.php
+++ b/tests/phpunit/base_testcase.php
@@ -42,7 +42,6 @@ defined('MOODLE_INTERNAL') || die();
  * @author     Daniel Thee Roperto <daniel.roperto@catalyst-au.net>
  * @copyright  2016 Catalyst IT
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @SuppressWarnings(public) Allow as many methods as needed.
  */
 abstract class auth_outage_base_testcase extends advanced_testcase {
     /**
@@ -66,6 +65,9 @@ abstract class auth_outage_base_testcase extends advanced_testcase {
         }
     }
 
+    /**
+     * Setup testcase.
+     */
     public function setUp() {
         global $CFG;
 
@@ -73,6 +75,9 @@ abstract class auth_outage_base_testcase extends advanced_testcase {
         $this->resetAfterTest(true);
     }
 
+    /**
+     * Tear down to restore the original DB reference.
+     */
     public function tearDown() {
         global $DB;
 
diff --git a/tests/phpunit/dml/outagedb_test.php b/tests/phpunit/dml/outagedb_test.php
index d19bb6a..af9af0c 100644
--- a/tests/phpunit/dml/outagedb_test.php
+++ b/tests/phpunit/dml/outagedb_test.php
@@ -36,7 +36,6 @@ require_once(__DIR__.'/../base_testcase.php');
  * @author      Daniel Thee Roperto <daniel.roperto@catalyst-au.net>
  * @copyright   2016 Catalyst IT
  * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @SuppressWarnings(public) Allow as many methods as needed.
  */
 class outagedb_test extends auth_outage_base_testcase {
     /**
diff --git a/tests/phpunit/form/forms_test.php b/tests/phpunit/form/forms_test.php
index c7d2b2e..58e7102 100644
--- a/tests/phpunit/form/forms_test.php
+++ b/tests/phpunit/form/forms_test.php
@@ -198,6 +198,10 @@ class forms_test extends auth_outage_base_testcase {
         ];
     }
 
+    /**
+     * Skip tests for moodle below 30.
+     * @param string $reason reason to be filled
+     */
     private function skip_because_moodle_is_below_30($reason = '') {
         global $CFG;
 
diff --git a/tests/phpunit/installation_test.php b/tests/phpunit/installation_test.php
index 4a51d28..d0636ae 100644
--- a/tests/phpunit/installation_test.php
+++ b/tests/phpunit/installation_test.php
@@ -39,7 +39,6 @@ require_once(__DIR__.'/base_testcase.php');
  * @author     Daniel Thee Roperto <daniel.roperto@catalyst-au.net>
  * @copyright  2016 Catalyst IT
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @SuppressWarnings(public) Allow as many methods as needed.
  */
 class installation_test extends auth_outage_base_testcase {
     /**
diff --git a/tests/phpunit/lib_test.php b/tests/phpunit/lib_test.php
index cbc5a29..6c276e0 100644
--- a/tests/phpunit/lib_test.php
+++ b/tests/phpunit/lib_test.php
@@ -34,9 +34,11 @@ require_once(__DIR__.'/../../lib.php');
  * @author     Daniel Thee Roperto <daniel.roperto@catalyst-au.net>
  * @copyright  2017 Catalyst IT
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @SuppressWarnings(public) Allow as many methods as needed.
  */
 class lib_test extends auth_outage_base_testcase {
+    /**
+     * Test this plugin gets climaintenance resource file.
+     */
     public function test_auth_outage_get_climaintenance_resource_file_resolves_a_file() {
         global $CFG;
         $dir = $CFG->dataroot.'/auth_outage/climaintenance';
@@ -88,6 +90,9 @@ class lib_test extends auth_outage_base_testcase {
         self::assertSame($realfile, $actual);
     }
 
+    /**
+     * Test this plugin gets climaintenance resource file and prevents path traversal attack.
+     */
     public function test_auth_outage_get_climaintenance_resource_file_prevent_path_traversal() {
         global $CFG;
 
diff --git a/tests/phpunit/local/cli/cli_test.php b/tests/phpunit/local/cli/cli_test.php
index d05fa7f..d589ccf 100644
--- a/tests/phpunit/local/cli/cli_test.php
+++ b/tests/phpunit/local/cli/cli_test.php
@@ -36,7 +36,6 @@ require_once(__DIR__.'/cli_testcase.php');
  * @author     Daniel Thee Roperto <daniel.roperto@catalyst-au.net>
  * @copyright  2016 Catalyst IT
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @SuppressWarnings(public) Allow as many methods as needed.
  */
 class cli_test extends auth_outage_cli_testcase {
     /**
diff --git a/tests/phpunit/local/cli/cli_testcase.php b/tests/phpunit/local/cli/cli_testcase.php
index 47412a7..88aa77f 100644
--- a/tests/phpunit/local/cli/cli_testcase.php
+++ b/tests/phpunit/local/cli/cli_testcase.php
@@ -35,7 +35,6 @@ require_once(__DIR__.'/../../base_testcase.php');
  * @author     Daniel Thee Roperto <daniel.roperto@catalyst-au.net>
  * @copyright  2016 Catalyst IT
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @SuppressWarnings(public) Allow as many methods as needed.
  */
 abstract class auth_outage_cli_testcase extends auth_outage_base_testcase {
     /**
diff --git a/tests/phpunit/local/cli/create_test.php b/tests/phpunit/local/cli/create_test.php
index 5194d6a..4e8d707 100644
--- a/tests/phpunit/local/cli/create_test.php
+++ b/tests/phpunit/local/cli/create_test.php
@@ -38,7 +38,6 @@ require_once(__DIR__.'/cli_testcase.php');
  * @author      Daniel Thee Roperto <daniel.roperto@catalyst-au.net>
  * @copyright   2016 Catalyst IT
  * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @SuppressWarnings(public) Allow as many methods as needed.
  */
 class create_test extends auth_outage_cli_testcase {
     /**
diff --git a/tests/phpunit/local/cli/finish_test.php b/tests/phpunit/local/cli/finish_test.php
index 4defa93..ee97767 100644
--- a/tests/phpunit/local/cli/finish_test.php
+++ b/tests/phpunit/local/cli/finish_test.php
@@ -38,7 +38,6 @@ require_once(__DIR__.'/cli_testcase.php');
  * @author      Daniel Thee Roperto <daniel.roperto@catalyst-au.net>
  * @copyright   2016 Catalyst IT
  * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @SuppressWarnings(public) Allow as many methods as needed.
  */
 class finish_test extends auth_outage_cli_testcase {
     /**
diff --git a/tests/phpunit/local/cli/waitforit_test.php b/tests/phpunit/local/cli/waitforit_test.php
index 948bea2..419e8be 100644
--- a/tests/phpunit/local/cli/waitforit_test.php
+++ b/tests/phpunit/local/cli/waitforit_test.php
@@ -38,7 +38,6 @@ require_once(__DIR__.'/cli_testcase.php');
  * @author      Daniel Thee Roperto <daniel.roperto@catalyst-au.net>
  * @copyright   2016 Catalyst IT
  * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @SuppressWarnings(public) Allow as many methods as needed.
  */
 class waitforit_test extends auth_outage_cli_testcase {
     /**
diff --git a/tests/phpunit/local/controllers/infopage_test.php b/tests/phpunit/local/controllers/infopage_test.php
index 9c3bc5a..bcaf9a4 100644
--- a/tests/phpunit/local/controllers/infopage_test.php
+++ b/tests/phpunit/local/controllers/infopage_test.php
@@ -36,7 +36,6 @@ require_once(__DIR__.'/../../base_testcase.php');
  * @author     Daniel Thee Roperto <daniel.roperto@catalyst-au.net>
  * @copyright  2016 Catalyst IT
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @SuppressWarnings(public) Allow as many methods as needed.
  */
 class infopagecontroller_test extends auth_outage_base_testcase {
     /**
diff --git a/tests/phpunit/local/controllers/maintenance_static_page_test.php b/tests/phpunit/local/controllers/maintenance_static_page_test.php
index 2318ff8..cd8f575 100644
--- a/tests/phpunit/local/controllers/maintenance_static_page_test.php
+++ b/tests/phpunit/local/controllers/maintenance_static_page_test.php
@@ -38,10 +38,11 @@ require_once(__DIR__.'/../../base_testcase.php');
  * @author     Daniel Thee Roperto <daniel.roperto@catalyst-au.net>
  * @copyright  2016 Catalyst IT
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @SuppressWarnings(public) Allow as many methods as needed.
- * @SuppressWarnings(methods) Allow as many methods as needed.
  */
 class maintenance_static_page_test extends auth_outage_base_testcase {
+    /**
+     * Test template file.
+     */
     public function test_templatefile() {
         global $CFG;
         $page = maintenance_static_page::create_from_html('<html></html>');
@@ -51,6 +52,9 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
             $page->get_io()->get_template_file());
     }
 
+    /**
+     * Test resources folder.
+     */
     public function test_resourcesfolder() {
         global $CFG;
         $page = maintenance_static_page::create_from_html('<html></html>');
@@ -59,10 +63,16 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
         self::assertSame($CFG->dataroot.'/auth_outage/climaintenance/preview', $page->get_io()->get_resources_folder());
     }
 
+    /**
+     * Test create from outage.
+     */
     public function test_createfromoutage() {
         // How to fetch a page from PHPUnit environment?
     }
 
+    /**
+     * Test create from HTML.
+     */
     public function test_createfromhtml() {
         $html = "<!DOCTYPE html>\n<html><head><title>Title</title></head><body>Content</body></html>";
         $expected = "<!DOCTYPE html>\n<html><head><title>Title</title><meta http-equiv=\"refresh\" content=\"300\">".
@@ -70,6 +80,9 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
         self::assertSame($expected, $this->generated_page_html($html));
     }
 
+    /**
+     * Test remove script tags.
+     */
     public function test_removescripttags() {
         $html = "<!DOCTYPE html>\n".
                 '<html><head><script type="text/javascript" src="http://xyz"></script><title>Title</title></head>'.
@@ -80,6 +93,9 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
         self::assertNotContains('<script', $generated);
     }
 
+    /**
+     * Test remove script tags.
+     */
     public function test_updatelinkstylesheet() {
         $localcsslink = $this->get_fixture_path('simple.css');
         $externalcsslink = 'http://google.com/coolstuff.css';
@@ -93,6 +109,9 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
         self::assertContains($externalcsslink, $generated);
     }
 
+    /**
+     * Test update link style sheet urls.
+     */
     public function test_updatelinkstylesheet_urls() {
         $localcsslink = $this->get_fixture_path('withurls.css');
         $html = "<!DOCTYPE html>\n".
@@ -108,6 +127,9 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
         self::assertFileExists($page->get_io()->get_resources_folder().'/ff7f7f87a26a908fc72930eaefb6b57306361d16.aW1hZ2UvcG5n');
     }
 
+    /**
+     * Test update link style sheet urls quoted.
+     */
     public function test_updatelinkstylesheet_urls_quoted() {
         $localcsslink = $this->get_fixture_path('withurls-quoted.css');
         $html = "<!DOCTYPE html>\n".
@@ -123,6 +145,9 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
         self::assertFileExists($page->get_io()->get_resources_folder().'/ff7f7f87a26a908fc72930eaefb6b57306361d16.aW1hZ2UvcG5n');
     }
 
+    /**
+     * Test update link style sheet urls with sub dir.
+     */
     public function test_updatelinkstylesheet_urls_subdir() {
         $localcsslink = $this->get_fixture_path('subdir/withurls-subdir.css');
         $html = "<!DOCTYPE html>\n".
@@ -138,6 +163,9 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
         self::assertFileExists($page->get_io()->get_resources_folder().'/a02a8a442fa82d5205ffb24722d9df7f35161f56.dGV4dC9wbGFpbg');
     }
 
+     /**
+      * Test update images to file.php style link.
+      */
     public function test_updateimages() {
         $localimglink = $this->get_fixture_path('catalyst.png');
         $externalimglink = 'http://google.com/coolstyle.css';
@@ -151,6 +179,9 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
         self::assertContains($externalimglink, $generated);
     }
 
+     /**
+      * Test update favicon to file.php style link.
+      */
     public function test_updatelinkfavicon() {
         $link = $this->get_fixture_path('catalyst.png');
         $html = "<!DOCTYPE html>\n".
@@ -162,6 +193,9 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
         self::assertContains('www.example.com/moodle/auth/outage/file.php?file=', $generated);
     }
 
+     /**
+      * Test update preview path to file.php style link.
+      */
     public function test_previewpath() {
         $link = $this->get_fixture_path('catalyst.png');
         $html = "<!DOCTYPE html>\n".
@@ -212,6 +246,9 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
         self::assertFileNotExists($file);
     }
 
+    /**
+     * Tests created file.
+     */
     public function test_createdfile() {
         global $CFG;
 
@@ -235,7 +272,7 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
     /**
      * Gets a fixture file for this test case.
      *
-     * @param $file
+     * @param string $file file name
      *
      * @return string
      */
@@ -243,23 +280,35 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
         return (string)new moodle_url('/auth/outage/tests/phpunit/local/controllers/fixtures/'.$file);
     }
 
+    /**
+     * Test saving empty string for template file.
+     */
     public function test_invalid_string_saving_template_empty() {
         $io = new maintenance_static_page_io();
         $this->set_expected_exception('coding_exception');
         $io->save_template_file('');
     }
 
+    /**
+     * Test saving non string for template file.
+     */
     public function test_invalid_string_saving_template_nostring() {
         $io = new maintenance_static_page_io();
         $this->set_expected_exception('coding_exception');
         $io->save_template_file(50);
     }
 
+    /**
+     * Test get url for file.
+     */
     public function test_get_url_for_file() {
         $io = new maintenance_static_page_io();
         self::assertContains('www.example.com/moodle/auth/outage/file.php?file=img.png', $io->get_url_for_file('img.png'));
     }
 
+    /**
+     * Return array of url data provider and true or false.
+     */
     public function is_url_dataprovider() {
         return [
             [true, 'http://catalyst.net.nz'],
@@ -272,12 +321,18 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
     }
 
     /**
+     * Test if it is url
      * @dataProvider is_url_dataprovider
+     * @param string $result expected result
+     * @param string $url url to be checked
      */
     public function test_is_url($result, $url) {
         self::assertEquals($result, maintenance_static_page_io::is_url($url));
     }
 
+    /**
+     * Test file get_data.
+     */
     public function test_file_get_data() {
         $file = __DIR__.'/fixtures/catalyst.png';
         $found = maintenance_static_page_io::file_get_data($file);
@@ -285,6 +340,9 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
         self::assertSame('image/png', $found['mime']);
     }
 
+    /**
+     * Test invalid file get_data.
+     */
     public function test_file_get_data_invalidfile() {
         $found = maintenance_static_page_io::file_get_data(__DIR__.'/fixtures/invalidfile');
         self::assertSame('', $found['contents']);
@@ -293,11 +351,17 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
         phpunit_util::reset_debugging();
     }
 
+    /**
+     * Test invalid file get_data.
+     */
     public function test_file_get_data_invalidfilename() {
         $this->set_expected_exception('coding_exception');
         maintenance_static_page_io::file_get_data(200);
     }
 
+    /**
+     * Test remove css selector.
+     */
     public function test_remove_css_selector() {
         $this->resetAfterTest(true);
         $html = "<!DOCTYPE html>\n".
@@ -310,6 +374,9 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
         self::assertNotContains('Goodbye cruel world', $generated);
     }
 
+    /**
+     * Test remove css selector id.
+     */
     public function test_remove_css_selector_id() {
         $this->resetAfterTest(true);
         $html = "<!DOCTYPE html>\n".
@@ -322,6 +389,9 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
         self::assertNotContains('Goodbye cruel world', $generated);
     }
 
+    /**
+     * Test remove css selector with multi lines.
+     */
     public function test_remove_css_selector_with_multiline() {
         $this->resetAfterTest(true);
         $html = "<!DOCTYPE html>\n".
@@ -338,6 +408,9 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
         self::assertNotContains('Goodbye cruel world', $generated);
     }
 
+    /**
+     * Test remove css selector needs trim.
+     */
     public function test_remove_css_selector_needing_trim() {
         $this->resetAfterTest(true);
         $html = "<!DOCTYPE html>\n".
@@ -354,6 +427,9 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
         self::assertNotContains('Goodbye cruel world', $generated);
     }
 
+    /**
+     * Test remove css selector with empty line.
+     */
     public function test_remove_css_selector_with_empty_line() {
         $this->resetAfterTest(true);
         $html = "<!DOCTYPE html>\n".
@@ -370,6 +446,9 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
         self::assertNotContains('Goodbye cruel world', $generated);
     }
 
+    /**
+     * Test remove css selector with invalid id.
+     */
     public function test_remove_css_selector_with_invalid_id() {
         $this->resetAfterTest(true);
         $html = "<!DOCTYPE html>\n".
@@ -382,6 +461,9 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
         self::assertContains('Goodbye cruel world', $generated);
     }
 
+    /**
+     * Test meta refresh 5 minutes.
+     */
     public function test_meta_refresh_5minutes() {
         $this->resetAfterTest(true);
         $html = "<!DOCTYPE html>\n".
@@ -393,6 +475,9 @@ class maintenance_static_page_test extends auth_outage_base_testcase {
         self::assertContains('<meta http-equiv="refresh" content="300">', $generated);
     }
 
+    /**
+     * Test meta refresh maximum 5 minutes.
+     */
     public function test_meta_refresh_maximum_5seconds() {
         $this->resetAfterTest(true);
         $html = "<!DOCTYPE html>\n".
diff --git a/tests/phpunit/local/outage_test.php b/tests/phpunit/local/outage_test.php
index 61ee4ec..fd1d5a8 100644
--- a/tests/phpunit/local/outage_test.php
+++ b/tests/phpunit/local/outage_test.php
@@ -35,7 +35,6 @@ require_once(__DIR__.'/../base_testcase.php');
  * @author     Daniel Thee Roperto <daniel.roperto@catalyst-au.net>
  * @copyright  2016 Catalyst IT
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @SuppressWarnings(public) Allow as many methods as needed.
  */
 class outage_test extends auth_outage_base_testcase {
     /**
diff --git a/tests/phpunit/local/outagelib_test.php b/tests/phpunit/local/outagelib_test.php
index 01dfab1..4ff8567 100644
--- a/tests/phpunit/local/outagelib_test.php
+++ b/tests/phpunit/local/outagelib_test.php
@@ -40,7 +40,6 @@ require_once(__DIR__.'/../base_testcase.php');
  * @author      Daniel Thee Roperto <daniel.roperto@catalyst-au.net>
  * @copyright   2016 Catalyst IT
  * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @SuppressWarnings(public) Allow as many methods as needed.
  */
 class outagelib_test extends auth_outage_base_testcase {
     /**
@@ -291,6 +290,9 @@ class outagelib_test extends auth_outage_base_testcase {
         self::assertEmpty($header);
     }
 
+    /**
+     * Test create maintenance php code
+     */
     public function test_createmaintenancephpcode() {
         $expected = <<<'EOT'
 <?php
@@ -332,6 +334,9 @@ EOT;
         self::assertSame($expected, $found);
     }
 
+    /**
+     * Test create maintenance php code without age
+     */
     public function test_createmaintenancephpcode_withoutage() {
         global $CFG;
         $this->resetAfterTest(true);
@@ -383,6 +388,9 @@ EOT;
         self::assertSame($found, $expected);
     }
 
+    /**
+     * Test create maintenance php code without IPs
+     */
     public function test_createmaintenancephpcode_withoutips() {
         global $CFG;
         $this->resetAfterTest(true);
@@ -399,6 +407,9 @@ EOT;
         self::assertFileNotExists($file);
     }
 
+    /**
+     * Test create maintenance php code without outage
+     */
     public function test_createmaintenancephpcode_withoutoutage() {
         global $CFG;
         $file = $CFG->dataroot.'/climaintenance.php';
@@ -517,6 +528,9 @@ EOT;
         self::assertNotEmpty($header);
     }
 
+    /**
+     * Creates outage for tests.
+     */
     private function create_outage() {
         $this->resetAfterTest(true);
         self::setAdminUser();