1 files changed, 43 insertions, 0 deletions
diff --git a/ext/date/tests/bug54340.phpt b/ext/date/tests/bug54340.phpt
new file mode 100644
index 0000000..7f00309
--- /dev/null
+++ b/ext/date/tests/bug54340.phpt
@@ -0,0 +1,43 @@
+--TEST--
+Bug #54340 (DateTime::add() method bug)
+--INI--
+date.timezone=UTC
+--FILE--
+<?php
+$interval = new DateInterval('P1D');
+
+$dt = new DateTime('first day of January 2011');
+var_dump($dt);
+
+$dt->add($interval);
+var_dump($dt);
+
+$dt = new DateTime('first day of January 2011');
+
+$dt->sub($interval);
+var_dump($dt);
+--EXPECT--
+object(DateTime)#2 (3) {
+  ["date"]=>
+  string(19) "2011-01-01 00:00:00"
+  ["timezone_type"]=>
+  int(3)
+  ["timezone"]=>
+  string(3) "UTC"
+}
+object(DateTime)#2 (3) {
+  ["date"]=>
+  string(19) "2011-01-02 00:00:00"
+  ["timezone_type"]=>
+  int(3)
+  ["timezone"]=>
+  string(3) "UTC"
+}
+object(DateTime)#3 (3) {
+  ["date"]=>
+  string(19) "2010-12-31 00:00:00"
+  ["timezone_type"]=>
+  int(3)
+  ["timezone"]=>
+  string(3) "UTC"
+}