diff --git a/src/wp-includes/functions.php b/src/wp-includes/functions.php
index ef4d23debb..1a53c12eda 100644
--- a/src/wp-includes/functions.php
+++ b/src/wp-includes/functions.php
@@ -1270,6 +1270,7 @@ function wp_remote_fopen( $uri ) {
  */
 function wp( $query_vars = '' ) {
 	global $wp, $wp_query, $wp_the_query;
+
 	$wp->main( $query_vars );
 
 	if ( ! isset( $wp_the_query ) ) {
diff --git a/tests/phpunit/tests/functions/wp.php b/tests/phpunit/tests/functions/wp.php
new file mode 100644
index 0000000000..80654a8526
--- /dev/null
+++ b/tests/phpunit/tests/functions/wp.php
@@ -0,0 +1,19 @@
+<?php
+
+/**
+ * @group functions.php
+ * @group query
+ */
+class Tests_Functions_WP extends WP_UnitTestCase {
+
+	public function test_wp_sets_global_vars() {
+		global $wp, $wp_query, $wp_the_query;
+
+		wp();
+
+		$this->assertInstanceOf( 'WP', $wp );
+		$this->assertInstanceOf( 'WP_Query', $wp_query );
+		$this->assertInstanceOf( 'WP_Query', $wp_the_query );
+	}
+
+}
diff --git a/tests/phpunit/tests/functions/wpAuthCheck.php b/tests/phpunit/tests/functions/wpAuthCheck.php
index b8e9d2c645..32aafdddb1 100644
--- a/tests/phpunit/tests/functions/wpAuthCheck.php
+++ b/tests/phpunit/tests/functions/wpAuthCheck.php
@@ -1,9 +1,9 @@
 <?php
 
 /**
- * @group functions.php
- *
  * Tests for the behavior of `wp_auth_check()`
+ *
+ * @group functions.php
  */
 class Tests_Functions_WP_Auth_Check extends WP_UnitTestCase {
 
diff --git a/tests/phpunit/tests/functions/wpRemoteFopen.php b/tests/phpunit/tests/functions/wpRemoteFopen.php
index 3f87138ff1..b5627da800 100644
--- a/tests/phpunit/tests/functions/wpRemoteFopen.php
+++ b/tests/phpunit/tests/functions/wpRemoteFopen.php
@@ -4,7 +4,7 @@
  * @group external-http
  * @group functions.php
  */
-class Tests_wp_remote_fopen extends WP_UnitTestCase {
+class Tests_Functions_wp_remote_fopen extends WP_UnitTestCase {
 
 	/**
 	 * @ticket 48845