add tests

Author: devnexen

ext/date/tests/gh18481.phpt

@@ -0,0 +1,21 @@
+--TEST--
+GH-18481 date_sunrise with utcOffset as INF
+--FILE--
+<?php
+
+foreach ([-NAN, NAN, INF, -INF] as $offset) {
+	var_dump(date_sunrise(time(), SUNFUNCS_RET_STRING, 38.4, -9, 90, $offset));
+}
+?>
+--EXPECTF--
+Deprecated: Function date_sunrise() is deprecated in %s on line %d
+bool(false)
+
+Deprecated: Function date_sunrise() is deprecated in %s on line %d
+bool(false)
+
+Deprecated: Function date_sunrise() is deprecated in %s on line %d
+bool(false)
+
+Deprecated: Function date_sunrise() is deprecated in %s on line %d
+bool(false)