MDL-72701 core: Improve code coverage for core

lib/tests/theme_config_test.php

@@ -33,8 +33,10 @@ require_once($CFG->libdir . '/outputlib.php');
  *
  * @copyright 2012 Sam Hemelryk
  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @covers \theme_config
+ * @coversDefaultClass \theme_config
  */
-class core_theme_config_testcase extends advanced_testcase {
+class theme_config_test extends advanced_testcase {
     /**
      * This function will test directives used to serve SVG images to make sure
      * this are making the right decisions.
@@ -129,6 +131,8 @@ class core_theme_config_testcase extends advanced_testcase {
 
     /**
      * This function will test custom device detection regular expression setting.
+     *
+     * @covers \core_useragent
      */
     public function test_devicedetectregex() {
         global $CFG;
@@ -216,6 +220,8 @@ class core_theme_config_testcase extends advanced_testcase {
 
     /**
      * Test that {@see theme_config::get_all_block_regions()} returns localised list of region names.
+     *
+     * @covers ::get_all_block_regions
      */
     public function test_get_all_block_regions() {
         $this->resetAfterTest();