Ticket #46627: 46627.patch

src/wp-includes/functions.php

@@ -797 +797 @@
  */
 function is_new_day() {
         global $currentday, $previousday;
-        if ( $currentday != $previousday ) {
+        if ( $currentday !== $previousday ) {
                 return 1;
         } else {
                 return 0;

tests/phpunit/tests/functions/isNewDay.php

@@ +1 @@
+<?php
+/**
+ * Tests is_new_date function
+ *
+ * @since 5.2.0
+ *
+ * @group functions.php
+ */
+class Tests_Functions_is_new_date extends WP_UnitTestCase {
+
+        public function _date_strings(){
+
+                return array(
+                        array( 'same', 'same', true ),
+                        array( 'same', 'diff', false ),
+                        array( 'false', false, false ), // this should not be true
+                );
+        }
+
+
+        /**
+         * @dataProvider _date_strings
+         *
+         * @param string $currentday
+         * @param string $previousday
+         * @param bool $expected
+         */
+        public function test_is_new_date( $currentday_string,$previousday_string , $expected ) {
+                global $currentday, $previousday;
+
+                $currentday = $currentday_string;
+                $previousday = $previousday_string;
+
+                $this->assertSame( is_new_day(), $expected );
+        }
+
+}