diff --git a/tests/phpunit/tests/functions.php b/tests/phpunit/tests/functions.php
index 828184491d..3c2e1101ad 100644
--- a/tests/phpunit/tests/functions.php
+++ b/tests/phpunit/tests/functions.php
@@ -726,30 +726,6 @@ class Tests_Functions extends WP_UnitTestCase {
 		update_option( 'blog_charset', $orig_blog_charset );
 	}
 
-	/**
-	 * @ticket 43977
-	 * @dataProvider data_wp_parse_list
-	 */
-	public function test_wp_parse_list( $expected, $actual ) {
-		$this->assertSame( $expected, array_values( wp_parse_list( $actual ) ) );
-	}
-
-	public function data_wp_parse_list() {
-		return array(
-			array( array( '1', '2', '3', '4' ), '1,2,3,4' ),
-			array( array( 'apple', 'banana', 'carrot', 'dog' ), 'apple,banana,carrot,dog' ),
-			array( array( '1', '2', 'apple', 'banana' ), '1,2,apple,banana' ),
-			array( array( '1', '2', 'apple', 'banana' ), '1, 2,apple,banana' ),
-			array( array( '1', '2', 'apple', 'banana' ), '1,2,apple,,banana' ),
-			array( array( '1', '2', 'apple', 'banana' ), ',1,2,apple,banana' ),
-			array( array( '1', '2', 'apple', 'banana' ), '1,2,apple,banana,' ),
-			array( array( '1', '2', 'apple', 'banana' ), '1,2 ,apple,banana' ),
-			array( array(), '' ),
-			array( array(), ',' ),
-			array( array(), ',,' ),
-		);
-	}
-
 	/**
 	 * @dataProvider data_wp_parse_id_list
 	 */
diff --git a/tests/phpunit/tests/functions/wpParseList.php b/tests/phpunit/tests/functions/wpParseList.php
new file mode 100644
index 0000000000..6f223bfd5f
--- /dev/null
+++ b/tests/phpunit/tests/functions/wpParseList.php
@@ -0,0 +1,35 @@
+<?php
+
+/**
+ * Tests for the wp_parse_list() function.
+ *
+ * @group functions
+ *
+ * @covers ::wp_parse_list
+ */
+class Tests_Functions_wpParseList extends WP_UnitTestCase {
+
+	/**
+	 * @ticket 43977
+	 * @dataProvider data_wp_parse_list
+	 */
+	public function test_wp_parse_list( $expected, $actual ) {
+		$this->assertSame( $expected, array_values( wp_parse_list( $actual ) ) );
+	}
+
+	public function data_wp_parse_list() {
+		return array(
+			array( array( '1', '2', '3', '4' ), '1,2,3,4' ),
+			array( array( 'apple', 'banana', 'carrot', 'dog' ), 'apple,banana,carrot,dog' ),
+			array( array( '1', '2', 'apple', 'banana' ), '1,2,apple,banana' ),
+			array( array( '1', '2', 'apple', 'banana' ), '1, 2,apple,banana' ),
+			array( array( '1', '2', 'apple', 'banana' ), '1,2,apple,,banana' ),
+			array( array( '1', '2', 'apple', 'banana' ), ',1,2,apple,banana' ),
+			array( array( '1', '2', 'apple', 'banana' ), '1,2,apple,banana,' ),
+			array( array( '1', '2', 'apple', 'banana' ), '1,2 ,apple,banana' ),
+			array( array(), '' ),
+			array( array(), ',' ),
+			array( array(), ',,' ),
+		);
+	}
+}