Index: tests/phpunit/tests/admin/includesPlugin.php
===================================================================
--- tests/phpunit/tests/admin/includesPlugin.php	(revision 50398)
+++ tests/phpunit/tests/admin/includesPlugin.php	(working copy)
@@ -89,6 +90,8 @@
 
 		// Clean up the temporary user.
 		wp_delete_user( $admin_user );
+		// Reset current screen.
+		set_current_screen( 'front' );
 
 		// Verify the menu was inserted at the expected position.
 		$this->assertSame( 'custom-position', $submenu[ $parent ][ $expected_position ][2] );
@@ -197,6 +200,8 @@
 
 		// Clean up the temporary user.
 		wp_delete_user( $admin_user );
+		// Reset current screen.
+		set_current_screen( 'front' );
 
 		foreach ( $actual_positions as $test => $actual_position ) {
 			// Verify the menu was inserted at the expected position.
@@ -280,6 +286,8 @@
 		// Clean up the temporary user.
 		wp_set_current_user( $current_user );
 		wp_delete_user( $admin_user );
+		// Reset current screen.
+		set_current_screen( 'front' );
 
 		// Verify the menu was inserted at the expected position.
 		$this->assertSame( 'main_slug', $submenu['main_slug'][0][2] );
@@ -311,6 +319,8 @@
 		// Clean up the temporary user.
 		wp_set_current_user( $current_user );
 		wp_delete_user( $admin_user );
+		// Reset current screen.
+		set_current_screen( 'front' );
 
 		// Verify the menu was inserted at the expected position.
 		$this->assertSame( 'submenu_page_1', $submenu['main_slug'][1][2] );