Index: tests/phpunit/tests/functions/addMagicQuotes.php
===================================================================
--- tests/phpunit/tests/functions/addMagicQuotes.php	(revision 48816)
+++ tests/phpunit/tests/functions/addMagicQuotes.php	(working copy)
@@ -13,6 +13,8 @@
 	 *
 	 * @param array $test_array Test value.
 	 * @param array $expected   Expected return value.
+	 *
+	 * @covers ::test_add_magic_quotes
 	 */
 	function test_add_magic_quotes( $test_array, $expected ) {
 		$this->assertSame( $expected, add_magic_quotes( $test_array ) );
Index: tests/phpunit/tests/functions/allowedProtocols.php
===================================================================
--- tests/phpunit/tests/functions/allowedProtocols.php	(revision 48816)
+++ tests/phpunit/tests/functions/allowedProtocols.php	(working copy)
@@ -8,11 +8,16 @@
 
 	/**
 	 * @ticket 19354
+	 *
+	 * @covers ::wp_allowed_protocols
 	 */
 	function test_data_is_not_an_allowed_protocol() {
 		$this->assertNotContains( 'data', wp_allowed_protocols() );
 	}
 
+	/**
+	 * @covers ::wp_allowed_protocols
+	 */
 	function test_allowed_protocol_has_an_example() {
 		$example_protocols = array();
 		foreach ( $this->data_example_urls() as $example ) {
@@ -27,6 +32,8 @@
 	 *
 	 * @param string The scheme.
 	 * @param string Example URL.
+	 *
+	 * @covers ::wp_allowed_protocols
 	 */
 	function test_allowed_protocols( $protocol, $url ) {
 		$this->assertEquals( $url, esc_url( $url, $protocol ) );
Index: tests/phpunit/tests/functions/anonymization.php
===================================================================
--- tests/phpunit/tests/functions/anonymization.php	(revision 48816)
+++ tests/phpunit/tests/functions/anonymization.php	(working copy)
@@ -26,6 +26,8 @@
 	 *
 	 * @param string $raw_ip          Raw IP address.
 	 * @param string $expected_result Expected result.
+	 *
+	 * @covers ::wp_privacy_anonymize_data
 	 */
 	public function test_wp_privacy_anonymize_ip( $raw_ip, $expected_result ) {
 		if ( ! function_exists( 'inet_ntop' ) || ! function_exists( 'inet_pton' ) ) {
@@ -210,6 +212,8 @@
 
 	/**
 	 * Test email anonymization of `wp_privacy_anonymize_data()`.
+	 *
+	 * @covers ::wp_privacy_anonymize_data
 	 */
 	public function test_anonymize_email() {
 		$this->assertSame( 'deleted@site.invalid', wp_privacy_anonymize_data( 'email', 'bar@example.com' ) );
@@ -217,6 +221,8 @@
 
 	/**
 	 * Test url anonymization of `wp_privacy_anonymize_data()`.
+	 *
+	 * @covers ::wp_privacy_anonymize_data
 	 */
 	public function test_anonymize_url() {
 		$this->assertSame( 'https://site.invalid', wp_privacy_anonymize_data( 'url', 'https://example.com/author/username' ) );
@@ -224,6 +230,8 @@
 
 	/**
 	 * Test date anonymization of `wp_privacy_anonymize_data()`.
+	 *
+	 * @covers ::wp_privacy_anonymize_data
 	 */
 	public function test_anonymize_date() {
 		$this->assertEquals( '0000-00-00 00:00:00', wp_privacy_anonymize_data( 'date', '2003-12-25 12:34:56' ) );
@@ -231,6 +239,8 @@
 
 	/**
 	 * Test text anonymization of `wp_privacy_anonymize_data()`.
+	 *
+	 * @covers ::wp_privacy_anonymize_data
 	 */
 	public function test_anonymize_text() {
 		$text = __( 'Four score and seven years ago' );
@@ -239,6 +249,8 @@
 
 	/**
 	 * Test long text anonymization of `wp_privacy_anonymize_data()`.
+	 *
+	 * @covers ::wp_privacy_anonymize_data
 	 */
 	public function test_anonymize_long_text() {
 		$text = __( 'Four score and seven years ago' );
@@ -249,6 +261,8 @@
 	 * Test text anonymization when a filter is added.
 	 *
 	 * @ticket 44141
+	 *
+	 * @covers ::wp_privacy_anonymize_data
 	 */
 	public function test_anonymize_with_filter() {
 		add_filter( 'wp_privacy_anonymize_data', array( $this, 'filter_wp_privacy_anonymize_data' ), 10, 3 );
Index: tests/phpunit/tests/functions/canonicalCharset.php
===================================================================
--- tests/phpunit/tests/functions/canonicalCharset.php	(revision 48816)
+++ tests/phpunit/tests/functions/canonicalCharset.php	(working copy)
@@ -8,42 +8,72 @@
 
 class Tests_Functions_CanonicalCharset extends WP_UnitTestCase {
 
+	/**
+	 * @covers ::_canonical_charset
+	 */
 	public function test_utf_8_lower() {
 		$this->assertEquals( 'UTF-8', _canonical_charset( 'utf-8' ) );
 	}
 
+	/**
+	 * @covers ::_canonical_charset
+	 */
 	public function test_utf_8_upper() {
 		$this->assertEquals( 'UTF-8', _canonical_charset( 'UTF-8' ) );
 	}
 
+	/**
+	 * @covers ::_canonical_charset
+	 */
 	public function test_utf_8_mixxed() {
 		$this->assertEquals( 'UTF-8', _canonical_charset( 'Utf-8' ) );
 	}
 
+	/**
+	 * @covers ::_canonical_charset
+	 */
 	public function test_utf_8() {
 		$this->assertEquals( 'UTF-8', _canonical_charset( 'UTF8' ) );
 	}
 
+	/**
+	 * @covers ::_canonical_charset
+	 */
 	public function test_iso_lower() {
 		$this->assertEquals( 'ISO-8859-1', _canonical_charset( 'iso-8859-1' ) );
 	}
 
+	/**
+	 * @covers ::_canonical_charset
+	 */
 	public function test_iso_upper() {
 		$this->assertEquals( 'ISO-8859-1', _canonical_charset( 'ISO-8859-1' ) );
 	}
 
+	/**
+	 * @covers ::_canonical_charset
+	 */
 	public function test_iso_mixxed() {
 		$this->assertEquals( 'ISO-8859-1', _canonical_charset( 'Iso8859-1' ) );
 	}
 
+	/**
+	 * @covers ::_canonical_charset
+	 */
 	public function test_iso() {
 		$this->assertEquals( 'ISO-8859-1', _canonical_charset( 'ISO8859-1' ) );
 	}
 
+	/**
+	 * @covers ::_canonical_charset
+	 */
 	public function test_random() {
 		$this->assertEquals( 'random', _canonical_charset( 'random' ) );
 	}
 
+	/**
+	 * @covers ::_canonical_charset
+	 */
 	public function test_empty() {
 		$this->assertEquals( '', _canonical_charset( '' ) );
 	}
@@ -50,6 +80,8 @@
 
 	/**
 	 * @ticket 23688
+	 *
+	 * @covers ::get_option
 	 */
 	function test_update_option_blog_charset() {
 		$orig_blog_charset = get_option( 'blog_charset' );
Index: tests/phpunit/tests/functions/cleanupHeaderComment.php
===================================================================
--- tests/phpunit/tests/functions/cleanupHeaderComment.php	(revision 48816)
+++ tests/phpunit/tests/functions/cleanupHeaderComment.php	(working copy)
@@ -15,6 +15,8 @@
 	 *
 	 * @param string $test_string
 	 * @param string $expected
+	 *
+	 * @covers ::_cleanup_header_comment
 	 */
 	public function test_cleanup_header_comment( $test_string, $expected ) {
 		$this->assertEqualsIgnoreEOL( $expected, _cleanup_header_comment( $test_string ) );
Index: tests/phpunit/tests/functions/deprecated.php
===================================================================
--- tests/phpunit/tests/functions/deprecated.php	(revision 48816)
+++ tests/phpunit/tests/functions/deprecated.php	(working copy)
@@ -140,6 +140,8 @@
 	 *
 	 * @ticket 6821
 	 * @expectedDeprecated wp_save_image_file
+	 *
+	 * @covers ::wp_save_image_file
 	 */
 	public function test_wp_save_image_file_deprecated_with_gd_resource() {
 		if ( ! function_exists( 'imagejpeg' ) ) {
@@ -163,6 +165,8 @@
 	 * Tests that wp_save_image_file() doesn't have a deprecated argument when passed a WP_Image_Editor.
 	 *
 	 * @ticket 6821
+	 *
+	 * @covers ::wp_save_image_file
 	 */
 	public function test_wp_save_image_file_not_deprecated_with_wp_image_editor() {
 		if ( ! function_exists( 'imagejpeg' ) ) {
Index: tests/phpunit/tests/functions/doEnclose.php
===================================================================
--- tests/phpunit/tests/functions/doEnclose.php	(revision 48816)
+++ tests/phpunit/tests/functions/doEnclose.php	(working copy)
@@ -60,6 +60,8 @@
 	 * @since 5.3.0
 	 *
 	 * @dataProvider data_test_do_enclose
+	 *
+	 * @covers ::do_enclose
 	 */
 	public function test_function_with_implicit_content_input( $content, $expected ) {
 		$post_id = self::factory()->post->create(
@@ -146,6 +148,8 @@
 	 * The function should return false when the post ID input is invalid.
 	 *
 	 * @since 5.3.0
+	 *
+	 * @covers ::do_enclose
 	 */
 	public function test_function_should_return_false_when_invalid_post_id() {
 		$post_id = null;
@@ -157,6 +161,8 @@
 	 * The function should delete an enclosed link when it's no longer in the post content.
 	 *
 	 * @since 5.3.0
+	 *
+	 * @covers ::do_enclose
 	 */
 	public function test_function_should_delete_enclosed_link_when_no_longer_in_post_content() {
 		$data = $this->data_test_do_enclose();
@@ -191,6 +197,8 @@
 	 * The function should support a post object input.
 	 *
 	 * @since 5.3.0
+	 *
+	 * @covers ::do_enclose
 	 */
 	public function test_function_should_support_post_object_input() {
 		$data = $this->data_test_do_enclose();
@@ -211,6 +219,8 @@
 	 * The enclosure links should be filterable with the `enclosure_links` filter.
 	 *
 	 * @since 5.3.0
+	 *
+	 * @covers ::do_enclose
 	 */
 	public function test_function_enclosure_links_should_be_filterable() {
 		$data = $this->data_test_do_enclose();
@@ -253,7 +263,7 @@
 	 * @since 5.3.0
 	 *
 	 * @param  int    $post_id Post ID.
-	 * @return string          All enclosure data for the given post.
+	 * @return string  All enclosure data for the given post.
 	 */
 	protected function get_enclosed_by_post_id( $post_id ) {
 		return implode( '', (array) get_post_meta( $post_id, 'enclosure', false ) );
Index: tests/phpunit/tests/functions/getStatusHeaderDesc.php
===================================================================
--- tests/phpunit/tests/functions/getStatusHeaderDesc.php	(revision 48816)
+++ tests/phpunit/tests/functions/getStatusHeaderDesc.php	(working copy)
@@ -14,6 +14,8 @@
 	 *
 	 * @param int    $code     HTTP status code.
 	 * @param string $expected Status description.
+	 *
+	 * @covers ::get_status_header_desc
 	 */
 	public function test_get_status_header_desc( $code, $expected ) {
 		$this->assertSame( get_status_header_desc( $code ), $expected );
Index: tests/phpunit/tests/functions/getWeekstartend.php
===================================================================
--- tests/phpunit/tests/functions/getWeekstartend.php	(revision 48816)
+++ tests/phpunit/tests/functions/getWeekstartend.php	(working copy)
@@ -5,6 +5,10 @@
  */
 class Tests_Functions_GetWeekstartend extends WP_UnitTestCase {
 
+	/**
+	 *
+	 * @covers ::get_weekstartend
+	 */
 	public function test_default_start_of_week_option_is_monday() {
 		$expected = array(
 			'start' => 1454889600,
@@ -14,6 +18,10 @@
 		$this->assertEquals( $expected, get_weekstartend( '2016-02-12' ) );
 	}
 
+	/**
+	 *
+	 * @covers ::get_weekstartend
+	 */
 	public function test_start_of_week_sunday() {
 		$expected = array(
 			'start' => 1454803200,
@@ -23,6 +31,10 @@
 		$this->assertEquals( $expected, get_weekstartend( '2016-02-12', 0 ) );
 	}
 
+	/**
+	 *
+	 * @covers ::get_weekstartend
+	 */
 	public function test_start_of_week_should_fall_back_on_start_of_week_option() {
 		update_option( 'start_of_week', 2 );
 
@@ -34,6 +46,10 @@
 		$this->assertEquals( $expected, get_weekstartend( '2016-02-12' ) );
 	}
 
+	/**
+	 *
+	 * @covers ::get_weekstartend
+	 */
 	public function test_start_of_week_should_fall_back_on_sunday_when_option_is_missing() {
 		delete_option( 'start_of_week' );
 
Index: tests/phpunit/tests/functions/isNewDay.php
===================================================================
--- tests/phpunit/tests/functions/isNewDay.php	(revision 48816)
+++ tests/phpunit/tests/functions/isNewDay.php	(working copy)
@@ -15,6 +15,8 @@
 	 * @param string $currentday_string  The day of the current post in the loop.
 	 * @param string $previousday_string The day of the previous post in the loop.
 	 * @param bool   $expected           Expected result.
+	 *
+	 * @covers ::is_new_day
 	 */
 	public function test_is_new_date( $currentday_string, $previousday_string, $expected ) {
 		global $currentday, $previousday;
Index: tests/phpunit/tests/functions/isSerializedString.php
===================================================================
--- tests/phpunit/tests/functions/isSerializedString.php	(revision 48816)
+++ tests/phpunit/tests/functions/isSerializedString.php	(working copy)
@@ -61,6 +61,8 @@
 	 *
 	 * @param array|object|int|string $data     Data value to test.
 	 * @param bool                    $expected Expected function result.
+	 *
+	 * @covers ::is_serialized_string
 	 */
 	public function test_is_serialized_string( $data, $expected ) {
 		$this->assertSame( $expected, is_serialized_string( $data ) );
Index: tests/phpunit/tests/functions/listFiles.php
===================================================================
--- tests/phpunit/tests/functions/listFiles.php	(revision 48816)
+++ tests/phpunit/tests/functions/listFiles.php	(working copy)
@@ -6,6 +6,11 @@
  * @group functions.php
  */
 class Tests_Functions_ListFiles extends WP_UnitTestCase {
+	
+	/**
+	 *
+	 * @covers ::list_files
+	 */
 	public function test_list_files_returns_a_list_of_files() {
 		$admin_files = list_files( ABSPATH . 'wp-admin/' );
 		$this->assertInternalType( 'array', $admin_files );
@@ -13,6 +18,10 @@
 		$this->assertContains( ABSPATH . 'wp-admin/index.php', $admin_files );
 	}
 
+	/**
+	 *
+	 * @covers ::list_files
+	 */
 	public function test_list_files_can_exclude_files() {
 		$admin_files = list_files( ABSPATH . 'wp-admin/', 100, array( 'index.php' ) );
 		$this->assertNotContains( ABSPATH . 'wp-admin/index.php', $admin_files );
Index: tests/phpunit/tests/functions/numberFormatI18n.php
===================================================================
--- tests/phpunit/tests/functions/numberFormatI18n.php	(revision 48816)
+++ tests/phpunit/tests/functions/numberFormatI18n.php	(working copy)
@@ -7,6 +7,11 @@
  * @group i18n
  */
 class Tests_Functions_NumberFormatI18n extends WP_UnitTestCase {
+
+	/**
+	 *
+	 * @covers ::number_format_i18n
+	 */
 	public function test_should_fall_back_to_number_format_when_wp_locale_is_not_set() {
 		$locale               = clone $GLOBALS['wp_locale'];
 		$GLOBALS['wp_locale'] = null;
@@ -20,6 +25,10 @@
 		$this->assertEquals( '123,456.7890', $actual_2 );
 	}
 
+	/**
+	 *
+	 * @covers ::number_format_i18n
+	 */
 	public function test_should_respect_number_format_of_locale() {
 		$decimal_point = $GLOBALS['wp_locale']->number_format['decimal_point'];
 		$thousands_sep = $GLOBALS['wp_locale']->number_format['thousands_sep'];
@@ -37,11 +46,19 @@
 		$this->assertEquals( '123^456@7890', $actual_2 );
 	}
 
+	/**
+	 *
+	 * @covers ::number_format_i18n
+	 */
 	public function test_should_default_to_en_us_format() {
 		$this->assertEquals( '123,457', number_format_i18n( 123456.789, 0 ) );
 		$this->assertEquals( '123,456.7890', number_format_i18n( 123456.789, 4 ) );
 	}
 
+	/**
+	 *
+	 * @covers ::number_format_i18n
+	 */
 	public function test_should_handle_negative_precision() {
 		$this->assertEquals( '123,457', number_format_i18n( 123456.789, 0 ) );
 		$this->assertEquals( '123,456.7890', number_format_i18n( 123456.789, -4 ) );
Index: tests/phpunit/tests/functions/pluginBasename.php
===================================================================
--- tests/phpunit/tests/functions/pluginBasename.php	(revision 48816)
+++ tests/phpunit/tests/functions/pluginBasename.php	(working copy)
@@ -35,6 +35,8 @@
 
 	/**
 	 * @ticket 29154
+	 *
+	 * @covers ::plugin_basename
 	 */
 	function test_return_correct_basename_for_symlinked_plugins() {
 		global $wp_plugin_paths;
@@ -49,6 +51,8 @@
 
 	/**
 	 * @ticket 28441
+	 *
+	 * @covers ::plugin_basename
 	 */
 	function test_return_correct_basename_for_symlinked_plugins_with_path_conflicts() {
 		global $wp_plugin_paths;
Index: tests/phpunit/tests/functions/referer.php
===================================================================
--- tests/phpunit/tests/functions/referer.php	(revision 48816)
+++ tests/phpunit/tests/functions/referer.php	(working copy)
@@ -32,6 +32,10 @@
 		return $hosts;
 	}
 
+	/**
+	 *
+	 * @covers ::wp_get_referer
+	 */
 	public function test_from_request_relative_referrer() {
 		$_REQUEST['_wp_http_referer'] = addslashes( '/test.php?id=123' );
 		$_SERVER['REQUEST_URI']       = addslashes( '/test.php?id=123' );
@@ -38,6 +42,10 @@
 		$this->assertFalse( wp_get_referer() );
 	}
 
+	/**
+	 *
+	 * @covers ::wp_get_referer
+	 */
 	public function test_from_request_same_url() {
 		$_REQUEST['_wp_http_referer'] = addslashes( 'http://' . WP_TESTS_DOMAIN . '/test.php?id=123' );
 		$_SERVER['REQUEST_URI']       = addslashes( '/test.php?id=123' );
@@ -44,6 +52,10 @@
 		$this->assertFalse( wp_get_referer() );
 	}
 
+	/**
+	 *
+	 * @covers ::wp_get_referer
+	 */
 	public function test_from_request_different_resource() {
 		$_REQUEST['_wp_http_referer'] = addslashes( 'http://' . WP_TESTS_DOMAIN . '/another.php?id=123' );
 		$_SERVER['REQUEST_URI']       = addslashes( '/test.php?id=123' );
@@ -50,6 +62,10 @@
 		$this->assertSame( 'http://' . WP_TESTS_DOMAIN . '/another.php?id=123', wp_get_referer() );
 	}
 
+	/**
+	 *
+	 * @covers ::wp_get_referer
+	 */
 	public function test_from_request_different_query_args() {
 		$_REQUEST['_wp_http_referer'] = addslashes( 'http://' . WP_TESTS_DOMAIN . '/test.php?another=555' );
 		$_SERVER['REQUEST_URI']       = addslashes( '/test.php?id=123' );
@@ -58,6 +74,8 @@
 
 	/**
 	 * @ticket 19856
+	 *
+	 * @covers ::wp_get_referer
 	 */
 	public function test_from_request_subfolder_install() {
 		add_filter( 'site_url', array( $this, '_fake_subfolder_install' ) );
@@ -71,6 +89,8 @@
 
 	/**
 	 * @ticket 19856
+	 *
+	 * @covers ::wp_get_referer
 	 */
 	public function test_from_request_subfolder_install_different_resource() {
 		add_filter( 'site_url', array( $this, '_fake_subfolder_install' ) );
@@ -82,6 +102,10 @@
 		remove_filter( 'site_url', array( $this, '_fake_subfolder_install' ) );
 	}
 
+	/**
+	 *
+	 * @covers ::wp_get_referer
+	 */
 	public function test_relative_referrer() {
 		$_REQUEST['HTTP_REFERER'] = addslashes( '/test.php?id=123' );
 		$_SERVER['REQUEST_URI']   = addslashes( '/test.php?id=123' );
@@ -88,6 +112,10 @@
 		$this->assertFalse( wp_get_referer() );
 	}
 
+	/**
+	 *
+	 * @covers ::wp_get_referer
+	 */
 	public function test_same_url() {
 		$_SERVER['HTTP_REFERER'] = addslashes( 'http://' . WP_TESTS_DOMAIN . '/test.php?id=123' );
 		$_SERVER['REQUEST_URI']  = addslashes( '/test.php?id=123' );
@@ -94,6 +122,10 @@
 		$this->assertFalse( wp_get_referer() );
 	}
 
+	/**
+	 *
+	 * @covers ::wp_get_referer
+	 */
 	public function test_different_resource() {
 		$_SERVER['HTTP_REFERER'] = addslashes( 'http://' . WP_TESTS_DOMAIN . '/another.php?id=123' );
 		$_SERVER['REQUEST_URI']  = addslashes( '/test.php?id=123' );
@@ -103,6 +135,8 @@
 	/**
 	 * @ticket 19856
 	 * @ticket 27152
+	 *
+	 * @covers ::wp_get_referer
 	 */
 	public function test_different_server() {
 		$_SERVER['HTTP_REFERER'] = addslashes( 'http://another.' . WP_TESTS_DOMAIN . '/test.php?id=123' );
@@ -113,6 +147,8 @@
 	/**
 	 * @ticket 19856
 	 * @ticket 27152
+	 *
+	 * @covers ::wp_get_referer
 	 */
 	public function test_different_server_allowed_redirect_host() {
 		add_filter( 'allowed_redirect_hosts', array( $this, 'filter_allowed_redirect_hosts' ) );
@@ -124,6 +160,8 @@
 
 	/**
 	 * @ticket 27152
+	 *
+	 * @covers ::wp_get_raw_referer
 	 */
 	public function test_raw_referer_empty() {
 		$this->assertFalse( wp_get_raw_referer() );
@@ -131,6 +169,8 @@
 
 	/**
 	 * @ticket 27152
+	 *
+	 * @covers ::wp_get_raw_referer
 	 */
 	public function test_raw_referer() {
 		$_SERVER['HTTP_REFERER'] = addslashes( 'http://example.com/foo?bar' );
@@ -139,6 +179,8 @@
 
 	/**
 	 * @ticket 27152
+	 *
+	 * @covers ::wp_get_raw_referer
 	 */
 	public function test_raw_referer_from_request() {
 		$_REQUEST['_wp_http_referer'] = addslashes( 'http://foo.bar/baz' );
@@ -147,6 +189,8 @@
 
 	/**
 	 * @ticket 27152
+	 *
+	 * @covers ::wp_get_raw_referer
 	 */
 	public function test_raw_referer_both() {
 		$_SERVER['HTTP_REFERER']      = addslashes( 'http://example.com/foo?bar' );
Index: tests/phpunit/tests/functions/removeQueryArg.php
===================================================================
--- tests/phpunit/tests/functions/removeQueryArg.php	(revision 48816)
+++ tests/phpunit/tests/functions/removeQueryArg.php	(working copy)
@@ -6,6 +6,8 @@
 class Tests_Functions_RemoveQueryArg extends WP_UnitTestCase {
 	/**
 	 * @dataProvider remove_query_arg_provider
+	 *
+	 * @covers ::remove_query_arg
 	 */
 	public function test_remove_query_arg( $keys_to_remove, $url, $expected ) {
 		$actual = remove_query_arg( $keys_to_remove, $url );
@@ -24,6 +26,10 @@
 		);
 	}
 
+	/**
+	 *
+	 * @covers ::remove_query_arg
+	 */
 	public function test_should_fall_back_on_current_url() {
 		$old_request_uri        = $_SERVER['REQUEST_URI'];
 		$_SERVER['REQUEST_URI'] = 'edit.php?foo=bar&baz=quz';
Index: tests/phpunit/tests/functions/sizeFormat.php
===================================================================
--- tests/phpunit/tests/functions/sizeFormat.php	(revision 48816)
+++ tests/phpunit/tests/functions/sizeFormat.php	(working copy)
@@ -7,6 +7,7 @@
  * @ticket 36635
  */
 class Tests_Functions_SizeFormat extends WP_UnitTestCase {
+
 	public function _data_size_format() {
 		return array(
 			array( array(), 0, false ),
@@ -45,6 +46,8 @@
 	 * @param $bytes
 	 * @param $decimals
 	 * @param $expected
+	 *
+	 * @covers ::size_format
 	 */
 	public function test_size_format( $bytes, $decimals, $expected ) {
 		$this->assertSame( $expected, size_format( $bytes, $decimals ) );
Index: tests/phpunit/tests/functions/underscoreReturn.php
===================================================================
--- tests/phpunit/tests/functions/underscoreReturn.php	(revision 48816)
+++ tests/phpunit/tests/functions/underscoreReturn.php	(working copy)
@@ -8,26 +8,50 @@
  */
 class Tests_Functions_UnderscoreReturn extends WP_UnitTestCase {
 
+	/**
+	 *
+	 * @covers ::__return_true
+	 */
 	public function test__return_true() {
 		$this->assertTrue( __return_true() );
 	}
 
+	/**
+	 *
+	 * @covers ::__return_false
+	 */
 	public function test__return_false() {
 		$this->assertFalse( __return_false() );
 	}
 
+	/**
+	 *
+	 * @covers ::__return_zero
+	 */
 	public function test__return_zero() {
 		$this->assertSame( 0, __return_zero() );
 	}
 
+	/**
+	 *
+	 * @covers ::__return_empty_array
+	 */
 	public function test__return_empty_array() {
 		$this->assertSame( array(), __return_empty_array() );
 	}
 
+	/**
+	 *
+	 * @covers ::__return_null
+	 */
 	public function test__return_null() {
 		$this->assertNull( __return_null() );
 	}
 
+	/**
+	 *
+	 * @covers ::__return_empty_string
+	 */
 	public function test__return_empty_string() {
 		$this->assertSame( '', __return_empty_string() );
 	}
Index: tests/phpunit/tests/functions/wp.php
===================================================================
--- tests/phpunit/tests/functions/wp.php	(revision 48816)
+++ tests/phpunit/tests/functions/wp.php	(working copy)
@@ -6,6 +6,10 @@
  */
 class Tests_Functions_WP extends WP_UnitTestCase {
 
+	/**
+	 *
+	 * @covers ::wp
+	 */
 	public function test_wp_sets_global_vars() {
 		global $wp, $wp_query, $wp_the_query;
 
Index: tests/phpunit/tests/functions/wpArraySliceAssoc.php
===================================================================
--- tests/phpunit/tests/functions/wpArraySliceAssoc.php	(revision 48816)
+++ tests/phpunit/tests/functions/wpArraySliceAssoc.php	(working copy)
@@ -20,6 +20,8 @@
 	 * @param array $target_array The original array.
 	 * @param array $keys         The list of keys.
 	 * @param array $expected     The expected result.
+	 *
+	 * @covers ::wp_array_slice_assoc
 	 */
 	public function test_wp_array_slice_assoc( $target_array, $keys, $expected ) {
 		$this->assertSame( wp_array_slice_assoc( $target_array, $keys ), $expected );
Index: tests/phpunit/tests/functions/wpAuthCheck.php
===================================================================
--- tests/phpunit/tests/functions/wpAuthCheck.php	(revision 48816)
+++ tests/phpunit/tests/functions/wpAuthCheck.php	(working copy)
@@ -11,6 +11,9 @@
 	 * Run with user not logged in.
 	 *
 	 * @ticket 41860
+	 *
+	 * @covers ::is_user_logged_in
+	 * @covers ::wp_auth_check
 	 */
 	function test_wp_auth_check_user_not_logged_in() {
 		$expected = array(
@@ -25,6 +28,9 @@
 	 * Run with user logged in.
 	 *
 	 * @ticket 41860
+	 *
+	 * @covers ::is_user_logged_in
+	 * @covers ::wp_auth_check
 	 */
 	function test_wp_auth_check_user_logged_in() {
 		// Log user in.
@@ -42,6 +48,9 @@
 	 * Run with user logged in but with expired state.
 	 *
 	 * @ticket 41860
+	 *
+	 * @covers ::is_user_logged_in
+	 * @covers ::wp_auth_check
 	 */
 	function test_wp_auth_check_user_logged_in_login_grace_period_set() {
 		// Log user in.
Index: tests/phpunit/tests/functions/wpGetArchives.php
===================================================================
--- tests/phpunit/tests/functions/wpGetArchives.php	(revision 48816)
+++ tests/phpunit/tests/functions/wpGetArchives.php	(working copy)
@@ -29,11 +29,19 @@
 		);
 	}
 
+	/**
+	 *
+	 * @covers ::wp_get_archives
+	 */
 	function test_wp_get_archives_default() {
 		$expected['default'] = "<li><a href='" . $this->month_url . "'>" . gmdate( 'F Y' ) . '</a></li>';
 		$this->assertEquals( $expected['default'], trim( wp_get_archives( array( 'echo' => false ) ) ) );
 	}
 
+	/**
+	 *
+	 * @covers ::wp_get_archives
+	 */
 	function test_wp_get_archives_type() {
 		$expected['type'] = "<li><a href='" . $this->year_url . "'>" . gmdate( 'Y' ) . '</a></li>';
 		$this->assertEquals(
@@ -49,6 +57,10 @@
 		);
 	}
 
+	/**
+	 *
+	 * @covers ::wp_get_archives
+	 */
 	function test_wp_get_archives_limit() {
 		$ids = array_slice( array_reverse( self::$post_ids ), 0, 5 );
 
@@ -85,6 +97,10 @@
 		);
 	}
 
+	/**
+	 *
+	 * @covers ::wp_get_archives
+	 */
 	function test_wp_get_archives_format() {
 		$expected['format'] = "<option value='" . $this->month_url . "'> " . gmdate( 'F Y' ) . ' </option>';
 		$this->assertEquals(
@@ -100,6 +116,10 @@
 		);
 	}
 
+	/**
+	 *
+	 * @covers ::wp_get_archives
+	 */
 	function test_wp_get_archives_before_and_after() {
 		$expected['before_and_after'] = "<div><a href='" . $this->month_url . "'>" . gmdate( 'F Y' ) . '</a></div>';
 		$this->assertEquals(
@@ -117,6 +137,10 @@
 		);
 	}
 
+	/**
+	 *
+	 * @covers ::wp_get_archives
+	 */
 	function test_wp_get_archives_show_post_count() {
 		$expected['show_post_count'] = "<li><a href='" . $this->month_url . "'>" . gmdate( 'F Y' ) . '</a>&nbsp;(8)</li>';
 		$this->assertEquals(
@@ -132,6 +156,10 @@
 		);
 	}
 
+	/**
+	 *
+	 * @covers ::wp_get_archives
+	 */
 	function test_wp_get_archives_echo() {
 		$expected['echo'] = "\t<li><a href='" . $this->month_url . "'>" . gmdate( 'F Y' ) . '</a></li>' . "\n";
 		$this->expectOutputString( $expected['echo'] );
@@ -138,6 +166,10 @@
 		wp_get_archives( array( 'echo' => true ) );
 	}
 
+	/**
+	 *
+	 * @covers ::wp_get_archives
+	 */
 	function test_wp_get_archives_order() {
 		self::factory()->post->create(
 			array(
@@ -184,6 +216,8 @@
 
 	/**
 	 * @ticket 21596
+	 *
+	 * @covers ::wp_get_archives
 	 */
 	function test_wp_get_archives_post_type() {
 		register_post_type( 'taco', array( 'public' => true ) );
Index: tests/phpunit/tests/functions/wpGetMimeTypes.php
===================================================================
--- tests/phpunit/tests/functions/wpGetMimeTypes.php	(revision 48816)
+++ tests/phpunit/tests/functions/wpGetMimeTypes.php	(working copy)
@@ -9,6 +9,8 @@
 
 	/**
 	 * @ticket 47701
+	 *
+	 * @covers ::wp_get_mime_types
 	 */
 	public function test_all_mime_match() {
 		$mime_types_start = wp_get_mime_types();
Index: tests/phpunit/tests/functions/wpListFilter.php
===================================================================
--- tests/phpunit/tests/functions/wpListFilter.php	(revision 48816)
+++ tests/phpunit/tests/functions/wpListFilter.php	(working copy)
@@ -39,7 +39,10 @@
 			$this->object_list[ $key ] = (object) $value;
 		}
 	}
-
+ 	/**
+  	*
+  	* @covers ::wp_filter_object_list
+  	*/
 	function test_filter_object_list_and() {
 		$list = wp_filter_object_list(
 			$this->object_list,
@@ -54,6 +57,10 @@
 		$this->assertArrayHasKey( 'bar', $list );
 	}
 
+	/**
+	 *
+	 * @covers ::wp_filter_object_list
+	 */
 	function test_filter_object_list_or() {
 		$list = wp_filter_object_list(
 			$this->object_list,
@@ -69,6 +76,10 @@
 		$this->assertArrayHasKey( 'baz', $list );
 	}
 
+	/**
+	 *
+	 * @covers ::wp_filter_object_list
+	 */
 	function test_filter_object_list_not() {
 		$list = wp_filter_object_list(
 			$this->object_list,
@@ -82,6 +93,10 @@
 		$this->assertArrayHasKey( 'baz', $list );
 	}
 
+	/**
+	 *
+	 * @covers ::wp_filter_object_list
+	 */
 	function test_filter_object_list_and_field() {
 		$list = wp_filter_object_list(
 			$this->object_list,
@@ -101,6 +116,10 @@
 		);
 	}
 
+	/**
+	 *
+	 * @covers ::wp_filter_object_list
+	 */
 	function test_filter_object_list_or_field() {
 		$list = wp_filter_object_list(
 			$this->object_list,
@@ -120,6 +139,10 @@
 		);
 	}
 
+	/**
+	 *
+	 * @covers ::wp_filter_object_list
+	 */
 	function test_filter_object_list_not_field() {
 		$list = wp_filter_object_list(
 			$this->object_list,
@@ -133,6 +156,10 @@
 		$this->assertEquals( array( 'baz' => 'baz' ), $list );
 	}
 
+	/**
+	 *
+	 * @covers ::wp_filter_object_list
+	 */
 	function test_wp_list_pluck() {
 		$list = wp_list_pluck( $this->object_list, 'name' );
 		$this->assertEquals(
@@ -157,6 +184,8 @@
 
 	/**
 	 * @ticket 28666
+	 *
+	 * @covers ::wp_filter_object_list
 	 */
 	function test_wp_list_pluck_index_key() {
 		$list = wp_list_pluck( $this->array_list, 'name', 'id' );
@@ -172,6 +201,8 @@
 
 	/**
 	 * @ticket 28666
+	 *
+	 * @covers ::wp_list_pluck
 	 */
 	function test_wp_list_pluck_object_index_key() {
 		$list = wp_list_pluck( $this->object_list, 'name', 'id' );
@@ -187,6 +218,8 @@
 
 	/**
 	 * @ticket 28666
+	 *
+	 * @covers ::wp_list_pluck
 	 */
 	function test_wp_list_pluck_missing_index_key() {
 		$list = wp_list_pluck( $this->array_list, 'name', 'nonexistent' );
@@ -202,6 +235,8 @@
 
 	/**
 	 * @ticket 28666
+	 *
+	 * @covers ::wp_list_pluck
 	 */
 	function test_wp_list_pluck_partial_missing_index_key() {
 		$array_list = $this->array_list;
@@ -219,6 +254,8 @@
 
 	/**
 	 * @ticket 28666
+	 *
+	 * @covers ::wp_list_pluck
 	 */
 	function test_wp_list_pluck_mixed_index_key() {
 		$mixed_list        = $this->array_list;
@@ -236,6 +273,8 @@
 
 	/**
 	 * @ticket 16895
+	 *
+	 * @covers ::wp_list_pluck
 	 */
 	function test_wp_list_pluck_containing_references() {
 		$ref_list = array(
@@ -261,6 +300,8 @@
 
 	/**
 	 * @ticket 16895
+	 *
+	 * @covers ::wp_list_pluck
 	 */
 	function test_wp_list_pluck_containing_references_keys() {
 		$ref_list = array(
@@ -284,6 +325,10 @@
 		$this->assertInstanceOf( 'stdClass', $ref_list[1] );
 	}
 
+	/**
+	 *
+	 * @covers ::wp_filter_object_list
+	 */
 	function test_filter_object_list_nested_array_and() {
 		$list = wp_filter_object_list( $this->object_list, array( 'field4' => array( 'blue' ) ), 'AND' );
 		$this->assertEquals( 1, count( $list ) );
@@ -290,6 +335,10 @@
 		$this->assertArrayHasKey( 'baz', $list );
 	}
 
+	/**
+	 *
+	 * @covers ::wp_filter_object_list
+	 */
 	function test_filter_object_list_nested_array_not() {
 		$list = wp_filter_object_list( $this->object_list, array( 'field4' => array( 'red' ) ), 'NOT' );
 		$this->assertEquals( 2, count( $list ) );
@@ -297,6 +346,10 @@
 		$this->assertArrayHasKey( 'baz', $list );
 	}
 
+	/**
+	 *
+	 * @covers ::wp_filter_object_list
+	 */
 	function test_filter_object_list_nested_array_or() {
 		$list = wp_filter_object_list(
 			$this->object_list,
@@ -311,6 +364,10 @@
 		$this->assertArrayHasKey( 'baz', $list );
 	}
 
+	/**
+	 *
+	 * @covers ::wp_filter_object_list
+	 */
 	function test_filter_object_list_nested_array_or_singular() {
 		$list = wp_filter_object_list( $this->object_list, array( 'field4' => array( 'blue' ) ), 'OR' );
 		$this->assertEquals( 1, count( $list ) );
@@ -317,12 +374,19 @@
 		$this->assertArrayHasKey( 'baz', $list );
 	}
 
-
+	/**
+	 *
+	 * @covers ::wp_filter_object_list
+	 */
 	function test_filter_object_list_nested_array_and_field() {
 		$list = wp_filter_object_list( $this->object_list, array( 'field4' => array( 'blue' ) ), 'AND', 'name' );
 		$this->assertEquals( array( 'baz' => 'baz' ), $list );
 	}
 
+	/**
+	 *
+	 * @covers ::wp_filter_object_list
+	 */
 	function test_filter_object_list_nested_array_not_field() {
 		$list = wp_filter_object_list( $this->object_list, array( 'field4' => array( 'green' ) ), 'NOT', 'name' );
 		$this->assertEquals(
@@ -334,6 +398,10 @@
 		);
 	}
 
+	/**
+	 *
+	 * @covers ::wp_filter_object_list
+	 */
 	function test_filter_object_list_nested_array_or_field() {
 		$list = wp_filter_object_list(
 			$this->object_list,
Index: tests/phpunit/tests/functions/wpListUtil.php
===================================================================
--- tests/phpunit/tests/functions/wpListUtil.php	(revision 48816)
+++ tests/phpunit/tests/functions/wpListUtil.php	(working copy)
@@ -159,6 +159,8 @@
 	 * @param int|string $field     Field from the object to place instead of the entire object
 	 * @param int|string $index_key Field from the object to use as keys for the new array.
 	 * @param array      $expected  Expected result.
+	 *
+	 * @covers ::wp_list_pluck
 	 */
 	public function test_wp_list_pluck( $list, $field, $index_key, $expected ) {
 		$this->assertEqualSetsWithIndex( $expected, wp_list_pluck( $list, $field, $index_key ) );
@@ -364,6 +366,8 @@
 	 *                         against each object.
 	 * @param string $operator The logical operation to perform.
 	 * @param array  $expected Expected result.
+	 *
+	 * @covers ::wp_list_filter
 	 */
 	public function test_wp_list_filter( $list, $args, $operator, $expected ) {
 		$this->assertEqualSetsWithIndex( $expected, wp_list_filter( $list, $args, $operator ) );
@@ -689,6 +693,8 @@
 	 * @param string|array $orderby Either the field name to order by or an array
 	 *                              of multiple orderby fields as $orderby => $order.
 	 * @param string       $order   Either 'ASC' or 'DESC'.
+	 *
+	 * @covers ::wp_list_sort
 	 */
 	public function test_wp_list_sort( $list, $orderby, $order, $expected ) {
 		$this->assertEquals( $expected, wp_list_sort( $list, $orderby, $order ) );
@@ -1014,11 +1020,18 @@
 	 * @param string|array $orderby Either the field name to order by or an array
 	 *                              of multiple orderby fields as $orderby => $order.
 	 * @param string       $order   Either 'ASC' or 'DESC'.
+	 *
+	 * @covers ::wp_list_sort
 	 */
 	public function test_wp_list_sort_preserve_keys( $list, $orderby, $order, $expected ) {
 		$this->assertEquals( $expected, wp_list_sort( $list, $orderby, $order, true ) );
 	}
 
+	/**
+	 *
+	 *
+	 * @covers WP_List_Util::get_input
+	 */
 	public function test_wp_list_util_get_input() {
 		$input = array( 'foo', 'bar' );
 		$util  = new WP_List_Util( $input );
@@ -1026,6 +1039,11 @@
 		$this->assertEqualSets( $input, $util->get_input() );
 	}
 
+	/**
+	 *
+	 *
+	 * @covers WP_List_Util::get_output
+	 */
 	public function test_wp_list_util_get_output_immediately() {
 		$input = array( 'foo', 'bar' );
 		$util  = new WP_List_Util( $input );
@@ -1033,6 +1051,11 @@
 		$this->assertEqualSets( $input, $util->get_output() );
 	}
 
+	/**
+	 *
+	 *
+	 * @covers WP_List_Util::get_output
+	 */
 	public function test_wp_list_util_get_output() {
 		$expected = array(
 			(object) array(
Index: tests/phpunit/tests/functions/wpRemoteFopen.php
===================================================================
--- tests/phpunit/tests/functions/wpRemoteFopen.php	(revision 48816)
+++ tests/phpunit/tests/functions/wpRemoteFopen.php	(working copy)
@@ -8,6 +8,8 @@
 
 	/**
 	 * @ticket 48845
+	 *
+	 * @covers ::wp_remote_fopen
 	 */
 	public function test_wp_remote_fopen_empty() {
 		$this->assertFalse( wp_remote_fopen( '' ) );
@@ -15,6 +17,8 @@
 
 	/**
 	 * @ticket 48845
+	 *
+	 * @covers ::wp_remote_fopen
 	 */
 	public function test_wp_remote_fopen_bad_url() {
 		$this->assertFalse( wp_remote_fopen( 'wp.com' ) );
@@ -22,6 +26,8 @@
 
 	/**
 	 * @ticket 48845
+	 *
+	 * @covers ::wp_remote_fopen
 	 */
 	public function test_wp_remote_fopen() {
 		// This URL gives a direct 200 response.
Index: tests/phpunit/tests/functions/wpValidateBoolean.php
===================================================================
--- tests/phpunit/tests/functions/wpValidateBoolean.php	(revision 48816)
+++ tests/phpunit/tests/functions/wpValidateBoolean.php	(working copy)
@@ -52,6 +52,8 @@
 	 *
 	 * @ticket 30238
 	 * @ticket 39868
+	 *
+	 * @covers ::wp_validate_boolean
 	 */
 	public function test_wp_validate_boolean( $test_value, $expected ) {
 		$this->assertSame( wp_validate_boolean( $test_value ), $expected );
