From 08a4ba91ef4c11c9b78cc84b3ab18d184892ddf6 Mon Sep 17 00:00:00 2001
From: Andrey Mironov <hertz@yandex-team.ru>
Date: Wed, 24 Sep 2014 15:32:47 +0400
Subject: [PATCH] add tests for date arithmetic.

---
 .../00069_date_arithmetic.reference           | 18 ++++++++++++++++
 .../0_stateless/00069_date_arithmetic.sql     | 21 +++++++++++++++++++
 2 files changed, 39 insertions(+)
 create mode 100644 dbms/tests/queries/0_stateless/00069_date_arithmetic.reference
 create mode 100644 dbms/tests/queries/0_stateless/00069_date_arithmetic.sql

diff --git a/dbms/tests/queries/0_stateless/00069_date_arithmetic.reference b/dbms/tests/queries/0_stateless/00069_date_arithmetic.reference
new file mode 100644
index 00000000000..da7b788b157
--- /dev/null
+++ b/dbms/tests/queries/0_stateless/00069_date_arithmetic.reference
@@ -0,0 +1,18 @@
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
diff --git a/dbms/tests/queries/0_stateless/00069_date_arithmetic.sql b/dbms/tests/queries/0_stateless/00069_date_arithmetic.sql
new file mode 100644
index 00000000000..0ae3984ac28
--- /dev/null
+++ b/dbms/tests/queries/0_stateless/00069_date_arithmetic.sql
@@ -0,0 +1,21 @@
+SELECT toTypeName(now() - now()) = 'Int32';
+SELECT toTypeName(now() + 1) = 'DateTime'; 
+SELECT toTypeName(1 + now()) = 'DateTime'; 
+SELECT toTypeName(now() - 1) = 'DateTime';
+SELECT toDateTime(1) + 1 = toDateTime(2);
+SELECT 1 + toDateTime(1) = toDateTime(2);
+SELECT toDateTime(1) - 1 = toDateTime(0);
+
+SELECT toTypeName(today()) = 'Date';
+SELECT today() = toDate(now());
+
+SELECT toTypeName(yesterday()) = 'Date';
+SELECT yesterday() = toDate(now() - 24*60*60);
+
+SELECT toTypeName(today() - today()) = 'Int32';
+SELECT toTypeName(today() + 1) = 'Date';
+SELECT toTypeName(1 + today()) = 'Date';
+SELECT toTypeName(today() - 1) = 'Date';
+SELECT yesterday() + 1 = today();
+SELECT 1 + yesterday() = today();
+SELECT today() - 1 = yesterday();